FEATURES n Maximum Offset Votage of μv n Maximum Offset Votage Drift of nv/ C n Noise:.μV P-P (.Hz to Hz Typ) n Votage Gain: (Typ) n PSRR: (Typ) n CMRR: (Typ) n Suppy Current:.8mA (Typ) n Suppy Operation:.7V to 6V (LTC).7V to ±.V (LTCHV) n Extended Common Mode Input Range n Output Swings Rai-to-Rai n Input Overoad Recovery Time: ms (Typ) n Operating Temperature Range: C to C n Low Prof e (mm) SOT- (ThinSOT) Package APPLICATIONS n Thermocoupe Ampifi ers n Eectronic Scaes n Medica Instrumentation n Strain Gauge Ampifi ers n High Resoution Data Acquisition n DC Accurate RC Active Fiters n Low Side Current Sense LTC/LTCHV Zero-Drift Operationa Ampifi ers in SOT- DESCRIPTION The LTC and LTCHV are zero-drift operationa ampifiers avaiabe in the - or 6-ead SOT- and SO-8 packages. The LTC operates from a singe.7v to 6V suppy. The LTCHV operates on suppies from.7v to ±.V. The current consumption is 8μA and the versions in the 6-ead SOT- and SO-8 packages offer power shutdown (active ow). The LTC, despite its miniature size, features uncompromising DC performance. The typica input offset votage and offset drift are.μv and nv/ C. The amost zero DC offset and drift are supported with a power suppy rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than. The input common mode votage ranges from the negative suppy up to typicay V from the positive suppy. The LTC aso has an enhanced output stage capabe of driving oads as ow as kω to both suppy rais. The open-oop gain is typicay. The LTC aso features a.μv P-P DC to Hz noise and a MHz gain bandwidth product. L, LT, LTC, LTM, Linear Technoogy and the Linear ogo are registered trademarks of Linear Technoogy Corporation. ThinSOT is a trademark of Linear Technoogy Corporation. A other trademarks are the property of their respective owners. Protected by U.S. Patents, incuding 878. TYPICAL APPLICATION Differentia Bridge Ampifi er V V Input Referred Noise.Hz to Hz Ω GAIN TRIM.μF.μF 8.k Ω STRAIN GAUGE LTCHV A V = (μv).μf 8.k V TA 6 8 TIME (SEC) fc
LTC/LTCHV ABSOLUTE MAXIMUM RATINGS (Note ) Tota Suppy Votage (V to V ) LTC...7V LTCHV...V Input Votage... (V.V) to (V.V) Output Short-Circuit Duration... Indefinite Operating Temperature Range... C to C Specified Temperature Range (Note )... C to C Storage Temperature Range...6 C to C Lead Temperature (Sodering, sec)... C PIN CONFIGURATION TOP VIEW OUT V V IN IN S PACKAGE -LEAD PLASTIC TSOT- T JMAX = C, θ JA = C/W OUT V IN TOP VIEW 6 V SHDN IN S6 PACKAGE 6-LEAD PLASTIC TSOT- T JMAX = C, θ JA = C/W SHDN IN IN V TOP VIEW 8 7 6 S8 PACKAGE 8-LEAD PLASTIC SO T JMAX = C, θ JA = 9 C/W NC V OUT NC ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTCCS#PBF LTCCS#TRPBF LTAEG -Lead Pastic TSOT- C to 7 C LTCIS#PBF LTCIS#TRPBF LTAEG -Lead Pastic TSOT- C to 8 C LTCHS#PBF LTCHS#TRPBF LTAEG -Lead Pastic TSOT- C to C LTCHVCS#PBF LTCHVCS#TRPBF LTAEH -Lead Pastic TSOT- C to 7 C LTCHVIS#PBF LTCHVIS#TRPBF LTAEH -Lead Pastic TSOT- C to 8 C LTCHVHS#PBF LTCHVHS#TRPBF LTAEH -Lead Pastic TSOT- C to C LTCCS6#PBF LTCCS6#TRPBF LTAEJ 6-Lead Pastic TSOT- C to 7 C LTCIS6#PBF LTCIS6#TRPBF LTAEJ 6-Lead Pastic TSOT- C to 8 C LTCHS6#PBF LTCHS6#TRPBF LTAEJ 6-Lead Pastic TSOT- C to C LTCHVCS6#PBF LTCHVCS6#TRPBF LTAEK 6-Lead Pastic TSOT- C to 7 C LTCHVIS6#PBF LTCHVIS6#TRPBF LTAEK 6-Lead Pastic TSOT- C to 8 C LTCHVHS6#PBF LTCHVHS6#TRPBF LTAEK 6-Lead Pastic TSOT- C to C LTCCS8#PBF LTCCS8#TRPBF 8-Lead Pastic SO C to 7 C LTCIS8#PBF LTCIS8#TRPBF I 8-Lead Pastic SO C to 8 C LTCHVCS8#PBF LTCHVCS8#TRPBF HV 8-Lead Pastic SO C to 7 C LTCHVIS8#PBF LTCHVIS8#TRPBF HVI 8-Lead Pastic SO C to 8 C fc
LTC/LTCHV ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTCCS LTCCS#TR LTAEG -Lead Pastic TSOT- C to 7 C LTCIS LTCIS#TR LTAEG -Lead Pastic TSOT- C to 8 C LTCHS LTCHS#TR LTAEG -Lead Pastic TSOT- C to C LTCHVCS LTCHVCS#TR LTAEH -Lead Pastic TSOT- C to 7 C LTCHVIS LTCHVIS#TR LTAEH -Lead Pastic TSOT- C to 8 C LTCHVHS LTCHVHS#TR LTAEH -Lead Pastic TSOT- C to C LTCCS6 LTCCS6#TR LTAEJ 6-Lead Pastic TSOT- C to 7 C LTCIS6 LTCIS6#TR LTAEJ 6-Lead Pastic TSOT- C to 8 C LTCHS6 LTCHS6#TR LTAEJ 6-Lead Pastic TSOT- C to C LTCHVCS6 LTCHVCS6#TR LTAEK 6-Lead Pastic TSOT- C to 7 C LTCHVIS6 LTCHVIS6#TR LTAEK 6-Lead Pastic TSOT- C to 8 C LTCHVHS6 LTCHVHS6#TR LTAEK 6-Lead Pastic TSOT- C to C LTCCS8 LTCCS8#TR 8-Lead Pastic SO C to 7 C LTCIS8 LTCIS8#TR I 8-Lead Pastic SO C to 8 C LTCHVCS8 LTCHVCS8#TR HV 8-Lead Pastic SO C to 7 C LTCHVIS8 LTCHVIS8#TR HVI 8-Lead Pastic SO C to 8 C Consut LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a abe on the shipping container. For more information on ead free part marking, go to: http://www.inear.com/eadfree/ For more information on tape and ree specifications, go to: http://www.inear.com/tapeandree/ fc
LTC/LTCHV ELECTRICAL CHARACTERISTICS (LTC/LTCHV) The denotes the specifi cations which appy over the fu operating temperature range, otherwise specifi cations are at T A = C. V S = V uness otherwise noted. (Note ) C, I SUFFIXES H SUFFIX PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Offset Votage (Note ) ±. ± ±. ± μv Average Input Offset Drift (Note ) ±. ±. μv/ C Long-Term Offset Drift nv/ mo Input Bias Current LTC ± ±7 ± ±7 pa ± ± pa LTCHV ± ± ± ± pa ± ± pa Input Offset Current LTC ± ± pa ± ± pa LTCHV ± ± pa ± ± pa Input Noise Votage R S = Ω,.Hz to Hz.. μv P-P Input Capacitance.7.7 pf Common Mode Rejection Ratio V CM = GND to (V.) V CM = GND to (V.) Power Suppy Rejection Ratio V S =.7V to 6V Large-Signa Votage Gain Output Votage Swing High Output Votage Swing Low R L = k R L = k to GND R L = k to GND R L = k to GND R L = k to GND Sew Rate V/μs Gain Bandwidth Product MHz Suppy Current V SHDN = V IH, No Load V SHDN = V IL.7..7. ma μa Shutdown Pin Input Low Votage (V IL ) V. V. V Shutdown Pin Input High Votage (V IH ) V. V. V Shutdown Pin Input Current V SHDN = GND.. μa Interna Samping Frequency 7. 7. khz.8.9.9.98.8.9.9.98 V V mv mv fc
LTC/LTCHV ELECTRICAL CHARACTERISTICS The denotes the specifi cations which appy over the fu operating temperature range, otherwise specifi cations are at T A = C. (LTC/LTCHV) V S = V uness otherwise noted. (Note ) C, I SUFFIXES H SUFFIX PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Offset Votage (Note ) ±. ± ±. ± μv Average Input Offset Drift (Note ) ±. ±. μv/ C Long-Term Offset Drift nv/ mo Input Bias Current LTC ±7 ± ±7 ± pa ± ± pa LTCHV ±7 ± ±7 ± pa ± ± pa Input Offset Current LTC ± ± pa ± ± pa LTCHV ± ± pa ± ± pa Input Noise Votage R S = Ω,.Hz to Hz.. μv P-P Common Mode Rejection Ratio V CM = GND to (V.) V CM = GND to (V.) Power Suppy Rejection Ratio V S =.7V to 6V Large-Signa Votage Gain Output Votage Swing High Output Votage Swing Low R L = k R L = k to GND R L = k to GND R L = k to GND R L = k to GND Sew Rate V/μs Gain Bandwidth Product MHz Suppy Current V SHDN = V IH, No Load V SHDN = V IL.8..8. ma μa Shutdown Pin Input Low Votage (V IL ) V. V. V Shutdown Pin Input High Votage (V IH ) V. V. V Shutdown Pin Input Current V SHDN = GND. 7. 7 μa Interna Samping Frequency 7. 7. khz.8.9.9.98.8.9.9.98 V V mv mv fc
LTC/LTCHV ELECTRICAL CHARACTERISTICS (LTCHV) The denotes the specifi cations which appy over the fu operating temperature range, otherwise specifi cations are at T A = C. V S = ±V uness otherwise noted. (Note ) C, I SUFFIXES H SUFFIX PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Offset Votage (Note ) ±. ± ±. ± μv Average Input Offset Drift (Note ) ±. ±. μv/ C Long-Term Offset Drift nv/ mo Input Bias Current (Note ) ± ± ± ± pa ± ± pa Input Offset Current (Note ) ± ± pa ± ± pa Input Noise Votage R S = Ω,.Hz to Hz.. μv P-P Common Mode Rejection Ratio V CM = V to (V.) V CM = V to (V.) Power Suppy Rejection Ratio V S =.7V to V Large-Signa Votage Gain R L = k Maximum Output Votage Swing R L = k to GND R L = k to GND ±.7 ±.9 Sew Rate V/μs Gain Bandwidth Product MHz Suppy Current V SHDN = V IH, No Load V SHDN = V IL..6 ma μa Shutdown Pin Input Low Votage (V IL ) V. V. V Shutdown Pin Input High Votage (V IH ) V. V. V Shutdown Pin Input Current V SHDN = V μa Interna Samping Frequency 7. 7. khz ±.9 ±.98 ±. ±.8 ±.9 ±.98 V V Note : Stresses beyond those isted under Absoute Maximum Ratings may cause permanent damage to the device. Exposure to any Absoute Maximum Rating condition for extended periods may affect device reiabiity and ifetime. Note : These parameters are guaranteed by design. Thermocoupe effects precude measurements of these votage eves during automated testing. Note : A versions of the LTC are designed, characterized and expected to meet the extended temperature imits of C and C. The LTCC/LTCHVC are guaranteed to meet the temperature imits of C and 7 C. The LTCI/LTCHVI are guaranteed to meet the temperature imits of C and 8 C. The LTCH/LTCHVH are guaranteed to meet the temperature imits of C and C. Note : The bias current measurement accuracy depends on the proximity of the suppy bypass capacitor to the device under test, especiay at ±V suppies. Because of testing imitations on the pacement of this bypass capacitor, the bias current at ±V suppies is guaranteed by design to meet the data sheet imits, but tested to reaxed imits. 6 fc
TYPICAL PERFORMANCE CHARACTERISTICS LTC/LTCHV CMRR () 8 6 Common Mode Rejection Ratio vs Frequency V S = V OR V V CM =.V P-P CMRR () 8 6 DC CMRR vs Common Mode Input Votage V S = V V S = V PSRR () PSRR vs Frequency PSRR 8 PSRR 6 k k k FREQUENCY (Hz) G T A = C V CM (V) G k k k FREQUENCY (Hz) G M OUTPUT SWING (V) 6 Output Votage Swing vs Load Resistance R L TO GND V S = V V S = V OUTPUT VOLTAGE (V) Output Swing vs Output Current 6 V S = V V S = V OUTPUT SWING (V) Output Swing vs Load Resistance ±V Suppy R L TO GND 6 8 LOAD RESISTANCE (kω) G.. OUTPUT CURRENT (ma) G 6 8 LOAD RESISTANCE (kω) G6 OUTPUT SWING (V) Output Swing vs Output Current ±V Suppy Gain/Phase vs Frequency Bias Current vs Temperature. OUTPUT CURRENT (ma) R L TO GND.. G7 GAIN () 8 6 GAIN PHASE V S = V OR V C L = pf 8 R L = kω k k k M M FREQUENCY (Hz) G 8 6 PHASE (DEG) BIAS CURRENT (pa) k k V S = V V S = V 7 TEMPERATURE ( C) G6 fc 7
LTC/LTCHV TYPICAL PERFORMANCE CHARACTERISTICS 6 Input Bias Current vs Input Common Mode Votage 6 Input Bias Current vs Input Common Mode Votage (LTCHV) Transient Response INPUT BIAS CURRENT MAGNITUDE (pa) 8 6 V S = V V S = V INPUT COMMON MODE VOLTAGE (V) G INPUT BIAS CURRENT (pa) V S = ±V V S = V V S = V INPUT COMMON MODE VOLTAGE (V) G./DIV A V = R L = k C L = pf V S = V μs/div G7 OUTPUT (V). INPUT (V). Input Overoad Recovery A V = R L = k C L = pf V S = ±.V μs/div G8 SAMPLING FREQUENCY (khz) 9 8 7 6 Samping Frequency vs Suppy Votage. T A = C...... SUPPLY VOLTAGE (V) G9 6. SAMPLING FREQUENCY (khz) 9 8 7 6 Samping Frequency vs Temperature V S = V 7 TEMPERATURE ( C) G SUPPLY CURRENT (ma) Suppy Current vs Suppy Votage. T A = C..8.6.. SUPPLY CURRENT (ma) Suppy Current vs Temperature. V S = V.8 V S = V.6.. 6 8 SUPPLY VOLTAGE (V) G 7 TEMPERATURE ( C) G 8 fc
TEST CIRCUITS LTC/LTCHV Eectrica Characteristics Test Circuit Ω k V LTC R L OUTPUT V TC DC-Hz Noise Test Circuit k 7k Ω 8k 6k 7k LTC.μF.μF LT.μF TO X-Y RECORDER FOR Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF. TC fc 9
LTC/LTCHV APPLICATIONS INFORMATION Shutdown The LTC incudes a shutdown pin in the 6-ead SOT- and the SO-8 version. When this active ow pin is high or aowed to foat, the device operates normay. When the shutdown pin is pued ow, the device enters shutdown mode; suppy current drops to μa, a cocking stops, and both inputs and output assume a high impedance state. Cock Feedthrough, Input Bias Current The LTC uses auto-zeroing circuitry to achieve an amost zero DC offset over temperature, common mode votage, and power suppy votage. The frequency of the cock used for auto-zeroing is typicay 7.kHz. The term cock feedthrough is broady used to indicate visibiity of this cock frequency in the op amp output spectrum. There are typicay two types of cock feedthrough in auto zeroed op amps ike the LTC. The first form of cock feedthrough is caused by the setting of the interna samping capacitor and is input referred; that is, it is mutipied by the cosed oop gain of the op amp. This form of cock feedthrough is independent of the magnitude of the input source resistance or the magnitude of the gain setting resistors. The LTC has a residue cock feedthrough of ess then μv RMS input referred at 7.kHz. The second form of cock feedthrough is caused by the sma amount of charge injection occurring during the samping and hoding of the op amp s input offset votage. The current spikes are mutipied by the impedance seen at the input terminas of the op amp, appearing at the output mutipied by the cosed oop gain of the op amp. To reduce this form of cock feedthrough, use smaer vaued gain setting resistors and minimize the source resistance at the input. If the resistance seen at the inputs is ess than k, this form of cock feedthrough is ess than μv RMS input referred at 7.kHz, or ess than the amount of residue cock feedthrough from the first form described above. Pacing a capacitor across the feedback resistor reduces either form of cock feedthrough by imiting the bandwidth of the cosed oop gain. Input bias current is defined as the DC current into the input pins of the op amp. The same current spikes that cause the second form of cock feedthrough described above, when averaged, dominate the DC input bias current of the op amp beow 7 C. At temperatures above 7 C, the eakage of the ESD protection diodes on the inputs increases the input bias currents of both inputs in the positive direction, whie the current caused by the charge injection stays reativey constant. At eevated temperatures (above 8 C) the eakage current begins to dominate and both the negative and positive pin s input bias currents are in the positive direction (into the pins). Input Pins, ESD Sensitivity ESD votages above 7V on the input pins of the op amp wi cause the input bias currents to increase (more DC current into the pins). At these votages, it is possibe to damage the device to a point where the input bias current exceeds the maximums specified in this data sheet. fc
TYPICAL APPLICATIONS LTC/LTCHV Singe Suppy Thermocoupe Ampifi er k % Ω k %.68μF V LTA K GND R 7 TYPE K.μF V LTC V OUT mv/ C LT COMPENSATES COLD JUNCTION OVER C TO C TEMPERATURE RANGE TA Gain of Singe Suppy Instrumentation Ampifi er Ω.μF V k Ω LTC V IN VIN OUTPUT DC OFFSET 6mV FOR.% RESISTORS, CMRR = k V LTC V OUT TA fc
LTC/LTCHV TYPICAL APPLICATIONS Instrumentation Ampifi er with V Common Mode Input Votage k M V IN M M k V V k LTCHV LTCHV V V V OUT OUTPUT OFFSET mv FOR.% RESISTORS, CMRR = TA6 High Precision -Input Mux Low Side Power Suppy Current Sensing.k k V IN A V = Ω IN A V = SHDN SHDN LTC k LTC SEL OUT SEL TO MEASURED CIRCUIT mω LOAD CURRENT Ω LTCHV k.μf V OUT V/AMP LOAD CURRENT IN MEASURED CIRCUIT, REFERRED TO V TA8 IN A V = SHDN LTC SEL TA7 SELECT INPUTS ARE CMOS LOGIC COMPATIBLE fc
PACKAGE DESCRIPTION.6 MAX.9 REF S Package -Lead Pastic TSOT- (Reference LTC DWG # -8-6) LTC/LTCHV.9 BSC (NOTE ). REF.8 MAX.6 REF. MIN.8 BSC..7 (NOTE ) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR.9 BSC.. TYP PLCS (NOTE ).8.9. BSC DATUM A. MAX.... REF.9. NOTE: (NOTE ). DIMENSIONS ARE IN MILLIMETERS. DRAWING NOT TO SCALE. DIMENSIONS ARE INCLUSIVE OF PLATING. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR. MOLD FLASH SHALL NOT EXCEED.mm 6. JEDEC PACKAGE REFERENCE IS MO-9.9 BSC S TSOT- REV B fc
LTC/LTCHV PACKAGE DESCRIPTION.6 MAX.9 REF S6 Package 6-Lead Pastic TSOT- (Reference LTC DWG # -8-66).9 BSC (NOTE ). REF.8 MAX.6 REF. MIN.8 BSC..7 (NOTE ) PIN ONE ID RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR.9 BSC.. 6 PLCS (NOTE ).8.9. BSC DATUM A. MAX.... REF.9. (NOTE ) NOTE:. DIMENSIONS ARE IN MILLIMETERS. DRAWING NOT TO SCALE. DIMENSIONS ARE INCLUSIVE OF PLATING. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR. MOLD FLASH SHALL NOT EXCEED.mm 6. JEDEC PACKAGE REFERENCE IS MO-9.9 BSC S6 TSOT- REV B fc
PACKAGE DESCRIPTION S8 Package 8-Lead Pastic Sma Outine (Narrow. Inch) (Reference LTC DWG # -8-6) LTC/LTCHV. BSC. ±..89.97 (.8.) NOTE 8 7 6. MIN.6 ±..8. (.79 6.97)..7 (.8.988) NOTE. ±. TYP RECOMMENDED SOLDER PAD LAYOUT.8. (..).. (..8) 8 TYP..69 (.6.7).. (..).6. (.6.7) NOTE: INCHES. DIMENSIONS IN (MILLIMETERS)..9 (..8) TYP. DRAWING NOT TO SCALE. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED.6" (.mm). (.7) BSC SO8 Information furnished by Linear Technoogy Corporation is beieved to be accurate and reiabe. However, no responsibiity is assumed for its use. Linear Technoogy Corporation makes no representation that the interconnection of its circuits as described herein wi not infringe on existing patent rights. fc
LTC/LTCHV TYPICAL APPLICATION Ground Referred Precision Current Sources k LT V LTC I OUT ma.v V OUT (V ).V R SET.V I OUT = R SET V OUT I OUT ma (V ).V V OUT V k LTC V LT V OUT.V I OUT = R SET R SET TA RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC9 Low Power Zero-Drift Op Amp Low Suppy Current μa LTC Precision Zero-Drift Op Amp Singe Suppy Operation.7V to 6V, Noise Tested and Guaranteed LTC/LTC Precision Zero-Drift Op Amp Dua/Quad LTC ±V Zero-Drift Op Amp High Votage Operation ±8V LTC Rai-to-Rai Input and Output Zero-Drift Op Amp Singe Zero-Drift Op Amp with Rai-to-Rai Input and Output and Shutdown LT677 Low Noise Rai-to-Rai Input and Output V OS = 9μV, V S =.7V to V Precision Op Amp LT88/LT88 Rai-to-Rai Output Precision Op Amp V OS = μv, IB = pa, V S =.7V to V LTC Dua Zero-Drift Op Amp Dua Version of the LTC in MS8 Package 6 LT 79 REV C PRINTED IN USA Linear Technoogy Corporation 6 McCarthy Bvd., Mipitas, CA 9-77 (8) -9 FAX: (8) -7 www.inear.com LINEAR TECHNOLOGY CORPORATION 999 fc