LT1014, LT1014A, LT1014D QUAD PRECISION OPERATIONAL AMPLIFIERS

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1 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 Single-Supply Operation: Input Voltage Range Extends to Ground, and Output Swings to Ground While Sinking Current Input Offset Voltage 3 µv Max at 2 C for LT Offset Voltage Temperature Coefficient 2. µv/ C Max for LT Input Offset Current. na Max at 2 C for LT High Gain.2 V/µV Min (R L = 2 kω),. V/µV Min (R L = 6 Ω) for LT Low Supply Current 2.2 ma Max at 2 C for LT Low Peak-to-Peak Noise Voltage. µv Typ Low Current Noise.7 pa/ Hz Typ description The LT, LTA, and LTD are quad precision operational amplifiers with -pin industry-standard configuration. They feature low offset-voltage temperature coefficient, high gain, low supply current, and low noise. The LT, LTA, and LTD can be operated with both dual ±-V and single -V power supplies. The common-mode input voltage range includes ground, and the output voltage can also swing to within a few milivolts of ground. Crossover distortion is eliminated. The LTC and LTD are characterized for operation from C to 7 C. The LTI and LTDI are characterized for operation from C to C. The LTM, LTAM and LTDM are characterized for operation over the full military temperature range of C to 2 C. IN NC V CC NC 2IN OUT IN IN V CC 2IN 2IN 2OUT NC OUT IN IN V CC 2IN 2IN 2OUT DW PACKAGE (TOP VIEW) J OR N PACKAGE (TOP VIEW) FK PACKAGE (TOP VIEW) IN OUT NC IN 2OUT NC 3OUT OUT 3IN IN NC No internal connection OUT IN IN V CC /GND 3IN 3IN 3OUT NC OUT IN IN V CC 3IN 3IN 3OUT IN NC V CC /GND NC 3IN Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 29, Texas Instruments Incorporated POST OFFICE BOX 633 DALLAS, TEXAS 726

2 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 T A C to7 C C to C V IO max AT 2 C AVAILABLE OPTIONS SMALL OUTLINE (DW) PACKAGED DEVICES CHIP CARRIER (FK) CERAMIC DIP (J) PLASTIC DIP (N) 3 µv LTCN 8 µv LTDDW LTDN 3 µv LTIN 8 µv LTDIDW LTDIN 8 µv LTAMFK LTAMJ C to 2 C 3 µv LTMFK LTMJ LTMN 8 µv LTDMDW LTDMN For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at Package drawings, thermal data, and symbolization are available at The DW package is available taped and reeled. Add the suffix R to the device type (e.g., LTDDWR). 2 POST OFFICE BOX 633 DALLAS, TEXAS 726

3 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 schematic (each amplifier) V CC 9 kω 9 k Ω.6 k Ω.6 k Ω.6 k Ω Ω k Ω 8 Ω Q Q36 Q6 Q3 Q6 Q Q Q32 Q3 Q3 Q3 J Q2 Q37 Q Q kω Q26 2. kω Q Q27 2 pf 2. pf 8 Ω Ω IN Q kω Q38 OUT Q2 Q2 Q28 Ω Q39 IN Q2 Q8 pf Q3 Q Q22 Q29 Q Q Q9 2 kω Q3 Q8 pf Q9 Q7 pf Q7 Q23 7 pf kω k Ω 2 kω Q2 2 kω Q2 2 kω 6 Ω.3 kω 3 Ω V CC Component values are nominal. POST OFFICE BOX 633 DALLAS, TEXAS 726 3

4 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage (see Note ): V CC V V CC V Differential input voltage (see Note 2) ±3 V Input voltage range, V I (any input) (see Note ) V CC V to V CC Duration of short-circuit current at (or below) (see Note 3) Unlimited Continuous total power dissipation See Dissipation Rating Table Operating free-air temperature range, T A : LTC, LTD C to 7 C LTI, LTDI C to C LTM, LTAM, LTDM C to 2 C Case temperature for 6 seconds: FK package C Storage temperature range, T stg C to C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES:. All voltage values, except differential voltages, are with respect to the midpoint between V CC and V CC. 2. Differential voltages are at the noninverting input with respect to the inverting input. 3. The output may be shorted to either supply. PACKAGE T A 2 C POWER RATING DISSIPATION RATING TABLE DERATING FACTOR ABOVE T A = 7 C POWER RATING T A = C POWER RATING T A = 2 C POWER RATING DW 2 mv 8.2 mw/ C 66 mw 369 mw 2 mw FK 37 mv. mw/ C 88 mw 9 mw 27 mw J 37 mv. mw/ C 88 mw 9 mw 27 mw N mv 9.2 mw/ C 736 mw mw 23 mw POST OFFICE BOX 633 DALLAS, TEXAS 726

5 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC± = ± V, V IC = (unless otherwise noted) LTC LTD PARAMETER TEST CONDITIONS T A MIN TYP MAX MIN TYP MAX V IO Input offset voltage R S = Ω VIO I IO I IB Temperature coeficient of input offset voltage Long-term drift of input offset voltage Input offset current Input bias current 2 C V ICR Common-mode input voltage range Full range V OM Maximum peak output voltage swing R L = 2kΩ 2 C Full range UNIT µvv Full range µv/ C 2 C.. µv/mo 2 C.... Full range C Full range to 3. to 3.3 to 3.8 to 3. to 3 2 C ±2. ± ±2. ± Full range ±2 ±2 na na.3 to 3.8 V V O = ± V, R L = 6 Ω 2 C Large-signal differential A VD 2 C V/µV voltage amplification V O = ± V, R L = 2 kω Full range.7.7 Common-mode V IC = V to 3. V 2 C CMRR mode rejection ratio V IC = V to 3 V Full range 9 9 k SVR r id r ic I CC Supply-voltage rejection ratio V CC± = ±2 V to ±8 V ( V CC / V IO ) 2 C 7 7 Full range Channel separation V O = ± V, R L = 2 kω 2 C db Differential input resistance Common-mode input resistance V db db 2 C MΩ 2 C GΩ Supply current 2 C per amplifier Full range.6.6 Full range is C to 7 C. All typical values are at. ma POST OFFICE BOX 633 DALLAS, TEXAS 726

6 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC± = V, V CC =, V O =. V, V IC = (unless otherwise noted) LTC LTD PARAMETER TEST CONDITIONS T A MIN TYP MAX MIN TYP MAX V IO Input offset voltage R S = Ω I IO I IB V ICR Input offset current Input bias current Common-mode input voltage range 2 C Full range C Full range C Full range C to 3..3 to 3.8 to 3..3 to 3.8 Full range to 3 to 3 Output low, No load 2 C 2 2 Output low, 2 C R L = 6 Ω to GND Full range 3 3 V OM Maximum peak output t Output low, I sink = ma 2 C Output high, No load 2 C.. UNIT µvv na na V mv A VD I CC Large-signal differential voltage amplification Output high, 2 C V R L = 6 Ω to GND Full range V O = mv to V, R L = Ω 2 C V/µV Supply current 2 C per amplifier Full range.. Full range is C to 7 C. operating characteristics, V CC ± = ± V, V IC =, PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SR Slew rate.2. V/µs V n Equivalent input noise voltage f = Hz 2 f = khz 22 V N(PP) Peak-to-peak equivalent input noise voltage f =. Hz to Hz. µv ma nv/ Hz I n Equivalent input noise current f = Hz.7 pa/ Hz 6 POST OFFICE BOX 633 DALLAS, TEXAS 726

7 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC± = ± V, V IC = (unless otherwise noted) LTI LTDI PARAMETER TEST CONDITIONS T A MIN TYP MAX MIN TYP MAX V IO Input offset voltage R S = Ω VIO I IO I IB Temperature coeficient of input offset voltage Long-term drift of input offset voltage Input offset current Input bias current 2 C V ICR Common-mode input voltage range Full range V OM Maximum peak output voltage swing R L = 2kΩ 2 C Full range UNIT µvv Full range µv/ C 2 C.. µv/mo 2 C.... Full range C Full range to 3. to 3.3 to 3.8 to 3. to 3 2 C ±2. ± ±2. ± Full range ±2 ±2 na na.3 to 3.8 V V O = ± V, R L = 6 Ω 2 C Large-signal differential A VD 2 C V/µV voltage amplification V O = ± V, R L = 2 kω Full range.7.7 Common-mode mode CMRR V Vto3V rejection ratio IC = 3. V k SVR r id r ic I CC Supply-voltage rejection ratio V CC± = ±2 V to ±8 V ( V CC / V IO ) 2 C Full range C 7 7 Full range Channel separation V O = ± V, R L = 2 kω 2 C db Differential input resistance Common-mode input resistance V db db 2 C MΩ 2 C GΩ Supply current 2 C per amplifier Full range.6.6 Full range is C to C. All typical values are at. ma POST OFFICE BOX 633 DALLAS, TEXAS 726 7

8 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC = V, V CC =, V O =. V, V IC = (unless otherwise noted) LTI LTDI PARAMETER TEST CONDITIONS T A MIN TYP MAX MIN TYP MAX V IO Input offset voltage R S = Ω I IO I IB V ICR Input offset current Input bias current Common-mode input voltage range 2 C Full range C Full range C Full range C to 3..3 to 3.8 to 3..3 to 3.8 Full range to 3 to 3 Output low, No load 2 C 2 2 Output low, 2 C R L = 6 Ω to GND Full range 3 3 V OM Maximum peak Output low, I sink = ma 2 C Output high, No load 2 C.. UNIT µvv na na V mv A VD I CC Large-signal differential voltage amplification Output high, 2 C V R L = 6 Ω to GND Full range V O = mv to V, R L = Ω 2 C V/µV Supply current 2 C per amplifier Full range.. Full range is C to C. operating characteristics, V CC = ± V, V IC =, PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SR Slew rate.2. V/µs V n Equivalent input noise voltage f = Hz 2 f = khz 22 V N(PP) Peak-to-peak equivalent input noise voltage f =. Hz to Hz. µv ma nv/ Hz I n Equivalent input noise current f = Hz.7 pa/ Hz 8 POST OFFICE BOX 633 DALLAS, TEXAS 726

9 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC± = ± V, V IC = (unless otherwise noted) V IO VIO I IO I IB V ICR V OM A VD CMRR k SVR r id r ic I CC PARAMETER Input offset voltage Temperature coefficient of input offset voltage Long-term drift of input offset voltage TEST CONDITIONS R S = Ω LTM LTAM LTDM T A MIN TYP MAX MIN TYP MAX MIN TYP MAX 2 C Full range 3 UNIT Full range µv/ C 2 C... µv/mo Input offset 2 C current Full range 2.8 Input bias 2 C current Full range 3 Common-mode input voltage range Maximum peak output voltage R L = 2 kω swing 2 C Full range to 3..9 to 3.3 to 3.8 to 3..9 to 3.3 to 3.8 to 3..9 to 3 2 C ±2. ± ±3 ± ±2. ± Full range ±. ±2 ±. V Large-signal O = ± V, R L = 6 Ω differential 2 C voltage V O = ± V, 2 C amplification R L = 2 kω Full range.2..2 Common-mode mode rejection ratio Supply-voltage rejection ratio ( V CC / V IO ) Channel separation Differential input resistance Common-mode input resistance V IC = V to 3. V V IC =.9 V to 3 V V CC± = ±2 V to ±8 V V O = ± V, R L = 2 kω 2 C Full range C Full range µvv na na.3 to 3.8 V 2 C db V V/µVV 2 C MΩ 2 C GΩ Supply current 2 C per amplifier Full range Full range is C to 2 C. All typical values are at. db db ma POST OFFICE BOX 633 DALLAS, TEXAS 726 9

10 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 electrical characteristics at specified free-air temperature, V CC = V, V CC =, V O =. V, V IC = (unless otherwise noted) V IO I IO I IB V ICR V OM A VD I CC PARAMETER TEST CONDITIONS Input R S = Ω offset voltage R S = Ω, V IC =. V LTM LTAM LTDM T A MIN TYP MAX MIN TYP MAX MIN TYP MAX UNIT 2 C Full range C Input 2 C offset current Full range 7 Input 2 C 3 bias current Full range Common- mode input voltage range Maximum peak output voltage swing Large-signal differential voltage amplification Output low, No load 2 C Full range to 3.. to 3.3 to 3.8 to 3.. to 3.3 to 3.8 to 3.. to 3.3 to C Output low, R L = 6Ω to 2 C GND Full range 8 8 Output low, I sink = ma 2 C Output high, No load 2 C... Output high, 2 C V R L = 6Ω to GND V O = mv to V, R L = Ω Full range µv na V mv 2 C V/µV Supply current 2 C per amplifier Full range.6..6 Full range is C to 2 C. operating characteristics, V CC± = ± V, V IC =, PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SR Slew rate.2. V/µs V n Equivalent input noise voltage f = Hz 2 f = khz 22 V N(PP) Peak-to-peak equivalent input noise voltage f =. Hz to Hz. µv ma nv/ Hz I n Equivalent input noise current f = Hz.7 pa/ Hz POST OFFICE BOX 633 DALLAS, TEXAS 726

11 LT, LTA, LTD TYPICAL CHARACTERISTICS SLOS39D JULY 989 REVISED AUGUST 29 Table of Graphs FIGURE V IO Input offset voltage Balanced source resistance V IO Input offset voltage Free-air temperature 2 V IO Warm-Up Change in input offset voltage Elapsed time 3 I IO Input offset current Free-air temperature I IB Input bias current Free-air temperature V IC Common-mode input voltage Input bias current 6 A VD Differential voltage amplification Load resistance 7, 8 Frequency 9, Channel separation Frequency Output saturation voltage Free-air temperature 2 CMRR Common-mode rejection ratio Frequency 3 k SVR Supply-voltage rejection ratio Frequency I CC Supply current Free-air temperature I OS Short-circuit output current Elapsed time 6 V n Equivalent input noise voltage Frequency 7 I n Equivalent input noise current Frequency 7 V N(PP) Peak-to-peak input noise voltage Time 8 Pulse response (small signal) Time 9, 2 Pulse response (large signal) Time 2, 22, 23 Phase shift Frequency 9 POST OFFICE BOX 633 DALLAS, TEXAS 726

12 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 TYPICAL CHARACTERISTICS LT INPUT OFFSET VOLTAGE BALANCED SOURCE RESISTANCE 2 2 INPUT OFFSET VOLTAGE OF REPRESENTATIVE UNITS FREE-AIR TEMPERATURE V CC± = ± V Input Offset Voltage mv V IO.. k V CC± = V V CC = V CC± = ± V R s Source Resistance Ω Figure R S R S 3 k k 3 k k 3 k M 3 M M V IO Input Offset Voltage µ V T A Free-Air Temperature C Figure 2 µ V WARM-UP CHANGE IN INPUT OFFSET VOLTAGE ELAPSED TIME V CC± = ± V V IC = INPUT OFFSET CURRENT FREE-AIR TEMPERATURE Change in Input Offset Votlage V IO 3 2 N Package J Package I IO Input Offset Current na V CC = V, V CC = V CC± = ± V V CC± = ±2. V 2 3 t Time After Power-On min Figure T A Free-Air Temperature C Figure Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 2 POST OFFICE BOX 633 DALLAS, TEXAS 726

13 LT, LTA, LTD TYPICAL CHARACTERISTICS SLOS39D JULY 989 REVISED AUGUST 29 3 V IC = INPUT BIAS CURRENT FREE-AIR TEMPERATURE COMMON-MODE INPUT VOLTAGE INPUT BIAS CURRENT I IB Input Bias Current na 2 2 V CC = V, V CC = V CC± = ± V V CC± = ±2. V Common-Mode Input Voltage V V IC V CC± = ± V (Left Scale) V CC = V V CC = (Right Scale) 3 2 Common-Mode Input Voltage V V IC T A Free-Air Temperature C Figure I IB Input Bias Current na Figure 6 A VD Differential Voltage Amplivication V/µ V. DIFFERENTIAL VOLTAGE AMPLIFICATION LOAD RESISTANCE V CC± = ± V V O = ± V T A = C T A = 2 C. k k k R L Load Resistance Ω A VD Differential Voltage Amplivication V/µ V. DIFFERENTIAL VOLTAGE AMPLIFICATION LOAD RESISTANCE V CC = V, V CC = V O = 2 mv to 3. V R L Load Resistance Ω T A = C T A = 2 C. k k k Figure 7 Figure 8 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 633 DALLAS, TEXAS 726 3

14 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 TYPICAL CHARACTERISTICS A VD Differential Voltage Amplivication db 2 DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT FREQUENCY A VD V CC = V V CC = V CC ± = ± V V CC± = ± V f Frequency MHz Figure 9 V IC = C L = pf V CC = V V CC = Phase Shift φ A VD Differential Voltage Amplivication db DIFFERENTIAL VOLTAGE AMPLIFICATION FREQUENCY V CC = V V CC = Figure V CC± = ± V f Frequency Hz C L = pf 2.. k k k M M Channel Separation db Limited by Thermal Interaction CHANNEL SEPARATION FREQUENCY R L = kω V CC± = ± V V I(PP) = 2 V to khz R L = 2 kω Limited by Pin-to-Pin Capacitance R L = Ω Output Saturation Voltage V. OUTPUT SATURATION VOLTAGE FREE-AIR TEMPERATURE I sink = ma I sink = ma I sink = ma I sink = µa I sink = µa V CC = V to 3 V V CC = I sink = 6 k k f Frequency Hz Figure k M T A Free-Air Temperature C Figure 2 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 633 DALLAS, TEXAS 726

15 LT, LTA, LTD TYPICAL CHARACTERISTICS SLOS39D JULY 989 REVISED AUGUST 29 CMRR Common-Mode Rejection Ratio db COMMON-MODE REJECTION RATIO FREQUENCY V CC = V V CC = k k f Frequency Hz V CC± = ± V k M K SVR Supply-Voltage Rejection Ratio db SUPPLY-VOLTAGE REJECTION RATIO FREQUENCY Negative Supply. k f Frequency Hz V CC± = ± V Positive Supply k k M Figure 3 Figure 6 SUPPLY CURRENT FREE-AIR TEMPERATURE SHORT-CIRCUIT OUTPUT CURRENT ELAPSED TIME T A = C V CC± = ± V µ A Supply Current Per Amplifier I CC V CC± = ± V V CC = V V CC = I OS Short-Circuit Output Current ma T A = 2 C T A = 2 C T A = C T A Free-Air Temperature C t Time min 2 3 Figure Figure 6 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 633 DALLAS, TEXAS 726

16 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 TYPICAL CHARACTERISTICS V n Equivalent Input Noise Voltage fa/ Hz 3 3 EQUIVALENT INPUT NOISE VOLTAGE AND EQUIVALENT INPUT NOISE CURRENT FREQUENCY V CC± = ±2 V to ±8 V I n V n /f Corner = 2 Hz 3 3 I n Equivalent Input Noise Current fa/ Hz Noise Voltage nv V N(PP) PEAK-TO-PEAK INPUT NOISE VOLTAGE OVER A -SECOND PERIOD TIME V CC± = ±2 V to ±8 V f =. Hz to Hz f Frequency Hz k 2 6 t Time s 8 Figure 7 Figure 8 V O Output Voltage mv VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE TIME V CC± = ± V A V = V O Output Voltage V VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE TIME V CC = V V CC = V I = to V R L = A V = t Time µs t Time µs 6 7 Figure 9 Figure 2 6 POST OFFICE BOX 633 DALLAS, TEXAS 726

17 LT, LTA, LTD TYPICAL CHARACTERISTICS SLOS39D JULY 989 REVISED AUGUST 29 V O Output Voltage mv VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE TIME V CC = V V CC = V I = to mv R L = 6 Ω to GND A V = V O Output Voltage mv VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE TIME V CC = V V CC = V I = to V R L =.7 kω to V A V = t Time µs t Time µs Figure 2 Figure 22 V O Output Voltage V VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE TIME V CC = V V CC = V I = to V R L = A V = t Time µs Figure POST OFFICE BOX 633 DALLAS, TEXAS 726 7

18 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 single-supply operation APPLICATION INFORMATION The LT is fully specified for single-supply operation (V CC = ). The common-mode input voltage range includes ground, and the output swings within a few millivolts of ground. Furthermore, the LT has specific circuitry that addresses the difficulties of single-supply operation, both at the input and at the output. At the input, the driving signal can fall below V, either inadvertently or on a transient basis. If the input is more than a few hundred millivolts below ground, the LT is designed to deal with the following two problems that can occur:. On many other operational amplifiers, when the input is more than a diode drop below ground, unlimited current flows from the substrate (V CC terminal) to the input, which can destroy the unit. On the LT, the -Ω resistors in series with the input (see schematic) protect the device even when the input is V below ground. 2. When the input is more than mv below ground (at ), the input stage of similar type operational amplifiers saturates, and phase reversal occurs at the output. This can cause lockup in servo systems. Because of unique phase-reversal protection circuitry (Q2, Q22, Q27, and Q28), the LT outputs do not reverse, even when the inputs are at. V (see Figure 2). However, this phase-reversal protection circuitry does not function when the other operational amplifier on the LT is driven hard into negative saturation at the output. Phase-reversal protection does not work on an amplifier: When s output is in negative saturation (the outputs of 2 and 3 have no effect) When 3 s output is in negative saturation (the outputs of and have no effect) When 2 s output is in negative saturation (the outputs of and have no effect) When s output is in negative saturation (the outputs of 2 and 3 have no effect) At the output, other single-supply designs either cannot swing to within 6 mv of ground or cannot sink more than a few microproamperes while swinging to ground. The all-npn output stage of the LT maintains its low output resistance and high gain characteristics until the output is saturated. In dual-supply operations, the output stage is free of crossover distortion. V I(PP) Input Voltage V 3 2 V O Output Voltage V 3 2 V O Output Voltage V (a) V I(PP) =. V to. V (b) Output Phase Reversal Exhibited by LM38 (c) No Phase Reversal Exhibited by LT Figure 2. Voltage-Follower Response With Input Exceeding the Negative Common-Mode Input Voltage Range 8 POST OFFICE BOX 633 DALLAS, TEXAS 726

19 LT, LTA, LTD APPLICATION INFORMATION SLOS39D JULY 989 REVISED AUGUST 29 comparator applications The single-supply operation of the LT can be used as a precision comparator with TTL-compatible output. In systems using both operational amplifiers and comparators, the LT can perform multiple duties (see Figures 2 and 26). V O Output Voltage V 3 2 mv mv 2 mv Overdrive V O Output Voltage V 3 2 mv mv Overdrive V CC = V V CC = 2 mv Differential Input Voltage mv V CC = V V CC = t Time µs Figure 2. Low-to-High-Level Output Response for Various Input Overdrives Differential Input Voltage mv t Time µs Figure 26. High-to-Low-Level Output Response for Various Input Overdrives low-supply operation The minimum supply voltage for proper operation of the LT is 3. V (three Ni-Cad batteries). Typical supply current at this voltage is 29 µa; therefore, power dissipation is only mw per amplifier. offset voltage and noise testing Figure 3 shows the test circuit for measuring input offset voltage and its temperature coefficient. This circuit with supply voltages increased to ±2 V is also used as the burn-in configuration. The peak-to-peak equivalent input noise voltage of the LT is measured using the test circuit shown in Figure 27. The frequency response of the noise tester indicates that the.-hz corner is defined by only one zero. The test time to measure.-hz to -Hz noise should not exceed seconds, as this time limit acts as an additional zero to eliminate noise contribution from the frequency band below. Hz. An input noise-voltage test is recommended when measuring the noise of a large number of units. A -Hz input noise-voltage measurement correlates well with a.-hz peak-to-peak noise reading because both results are determined by the white noise and the location of the /f corner frequency. Noise current is measured by the circuit and formula shown in Figure 28. The noise of the source resistors is subtracted. POST OFFICE BOX 633 DALLAS, TEXAS 726 9

20 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29. µf APPLICATION INFORMATION kω Ω LT A VD =, 2 kω.7 µf LT kω.3 kω 2.2 µf 22 µf Oscilloscope R in = MΩ NOTE A: All capacitor values are for nonpolarized capacitors only. 2.3 kω. µf kω Figure 27..-Hz to -Hz Peak-to-Peak Noise Test Circuit kω MΩ MΩ V Ω no 2 (82 2 nv)2 LT V n I n MΩ MΩ M Metal-film resistor Figure 28. Noise-Current Test Circuit and Formula Ω (see Note A) V Ω (see Note A) Ω (see Note A) LT V V O = V IO NOTE A: Resistors must have low thermoelectric potential. Figure 29. Test Circuit for V IO and αv IO 2 POST OFFICE BOX 633 DALLAS, TEXAS 726

21 LT, LTA, LTD APPLICATION INFORMATION SLOS39D JULY 989 REVISED AUGUST 29 V Q3 2N29 82 Ω Q 2N29 T N2 () 68 Ω SN7HC (6) µf µf.33 µf.2 µf kω 82 Ω Q2 2N29 kω kω kω Q 2N kω pf V V ± / LT.3 kω kω kω kω -ma Trim LT.2 V ± / LT IN to V Ω kω 2-mA Trim 8 Ω Ω -ma to 2-mA OUT To Load 2.2 kω Max % film resistor. Match -kω resistors.%. T = PICO-38 Figure 3. -V Powered, -ma to 2-mA Current-Loop Transmitter With 2-Bit Accuracy POST OFFICE BOX 633 DALLAS, TEXAS 726 2

22 LT, LTA, LTD SLOS39D JULY 989 REVISED AUGUST 29 APPLICATION INFORMATION. Ω T N2 () To Inverter Driver V / LT kω kω / LT 68 kω µf -ma to 2-mA OUT Fully Floating % film resistor V.3 kω LT.2 V kω 2 kω -ma Trim IN to V 3 Ω kω 2-mA Trim Figure 3. Fully Floating Modification to -ma to 2-mA Current-Loop Transmitter With 8-Bit Accuracy IN IN /2 LTC3 6 2 µf 3 8 µf 6 V / LT 8 7 R2 OUT A R IN IN /2 LTC3 7 8 µf µf 2 / LT R2 OUT B. µf R NOTE A: V IO = µv, A VD = (R/R2), CMRR = 2 db, V ICR = to V Figure 32. -V Single-Supply Dual Instrumentation Amplifier 22 POST OFFICE BOX 633 DALLAS, TEXAS 726

23 LT, LTA, LTD APPLICATION INFORMATION SLOS39D JULY 989 REVISED AUGUST 29 IN IN 2 kω µf 2 kω V 2 kω 2 LT 3 RG (2 kω Typ) 2 kω 6 LT 7 LT 9 kω kω kω kω LT kω V To Input Cable Shields kω OUT V % film resistor. Match -kω resistors.%. For high source impedances, use 2N2222 as diodes (with collector connected to base). NOTE A: A VD = (,/RG) Figure 33. -V Powered Precision Instrumentation Amplifier POST OFFICE BOX 633 DALLAS, TEXAS

24 PACKAGE OPTION ADDENDUM 7-Mar-27 PACKAGING INFORMATION Orderable Device Status () Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp ( C) A ACTIVE LCCC FK 2 TBD POST-PLATE N / A for Pkg Type - to A LT AMFKB Device Marking CA ACTIVE CDIP J TBD A2 N / A for Pkg Type - to CA LTAMJB A ACTIVE LCCC FK 2 TBD POST-PLATE N / A for Pkg Type - to A LTMFKB CA ACTIVE CDIP J TBD A2 N / A for Pkg Type - to CA LTMJB LTAMFKB ACTIVE LCCC FK 2 TBD POST-PLATE N / A for Pkg Type - to A LT AMFKB LTAMJ ACTIVE CDIP J TBD A2 N / A for Pkg Type - to 2 LTAMJ (/) Samples LTAMJB ACTIVE CDIP J TBD A2 N / A for Pkg Type - to CA LTAMJB LTCN ACTIVE PDIP N 2 Pb-Free (RoHS) LTCNE ACTIVE PDIP N 2 Pb-Free (RoHS) LTDDW ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDDWE ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDDWG ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDDWR ACTIVE SOIC DW 6 2 Green (RoHS & no Sb/Br) LTDDWRE ACTIVE SOIC DW 6 2 Green (RoHS & no Sb/Br) LTDDWRG ACTIVE SOIC DW 6 2 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type to 7 LTCN CU NIPDAU N / A for Pkg Type to 7 LTCN CU NIPDAU Level--26C-UNLIM to 7 LTD CU NIPDAU Level--26C-UNLIM to 7 LTD CU NIPDAU Level--26C-UNLIM to 7 LTD CU NIPDAU Level--26C-UNLIM to 7 LTD CU NIPDAU Level--26C-UNLIM to 7 LTD CU NIPDAU Level--26C-UNLIM to 7 LTD Addendum-Page

25 PACKAGE OPTION ADDENDUM 7-Mar-27 Orderable Device Status () Package Type Package Drawing Pins Package Qty Eco Plan LTDIDW ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDIDWG ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDIDWR ACTIVE SOIC DW 6 2 Green (RoHS & no Sb/Br) LTDIN ACTIVE PDIP N 2 Pb-Free (RoHS) LTDINE ACTIVE PDIP N 2 Pb-Free (RoHS) LTDMDW ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDMDWG ACTIVE SOIC DW 6 Green (RoHS & no Sb/Br) LTDN ACTIVE PDIP N 2 Pb-Free (RoHS) LTDNE ACTIVE PDIP N 2 Pb-Free (RoHS) (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp ( C) CU NIPDAU Level--26C-UNLIM - to LTDI CU NIPDAU Level--26C-UNLIM - to LTDI CU NIPDAU Level--26C-UNLIM - to LTDI CU NIPDAU N / A for Pkg Type - to LTDIN CU NIPDAU N / A for Pkg Type - to LTDIN CU NIPDAU Level--26C-UNLIM - to 2 LTDM CU NIPDAU Level--26C-UNLIM - to 2 LTDM CU NIPDAU N / A for Pkg Type to 7 LTDN CU NIPDAU N / A for Pkg Type to 7 LTDN LTMFKB ACTIVE LCCC FK 2 TBD POST-PLATE N / A for Pkg Type - to A LTMFKB LTMJ ACTIVE CDIP J TBD A2 N / A for Pkg Type - to 2 LTMJ Device Marking (/) Samples LTMJB ACTIVE CDIP J TBD A2 N / A for Pkg Type - to CA LTMJB () The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed.% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Addendum-Page 2

26 PACKAGE OPTION ADDENDUM 7-Mar-27 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either ) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed.% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. () There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. () Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF LTD : Enhanced Product: LTD-EP NOTE: Qualified Version Definitions: Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 3

27 PACKAGE MATERIALS INFORMATION -Jul-22 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W (mm) A (mm) B (mm) K (mm) P (mm) W (mm) Pin Quadrant LTDDWR SOIC DW Q LTDIDWR SOIC DW Q Pack Materials-Page

28 PACKAGE MATERIALS INFORMATION -Jul-22 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LTDDWR SOIC DW LTDIDWR SOIC DW Pack Materials-Page 2

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