ua747c, ua747m DUAL GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

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1 No Frequency Compensation Required Low Power Consumption Short-Circuit Protection Offset-Voltage Null Capability Wide Common-Mode and Differential Voltage Ranges No Latch-Up Designed to Be Interchangeable With Fairchild µa77c and µa77m description The ua77 is a dual general-purpose operational amplifier featuring offset-voltage null capability. Each half is electrically similar to ua7. The high common-mode input voltage range and the absence of latch-up make this amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low-value potentiometer may be connected between the offset null inputs to null out the offset voltage as shown in Figure 2. The ua77c is characterized for operation from C to 7 C; the ua77m is characterized for operation over the full military temperature range of 55 C to 25 C. symbol (each amplifier) IN+ Ï ÏÏÏ + ÏÏ OFFSET N2 V CC OFFSET 2N2 OFFSET N2 V CC OFFSET 2N2 D, J, N, OR W PACKAGE (TOP VIEW) ua77m...fk PACKAGE (TOP VIEW) OFFSET N No internal connection V CC + OFFSET 2N 2 V CC + OFFSET N V CC + 2 V CC + OFFSET 2N The two positive supply terminals ( VCC + and 2 VCC +) are connected together internally. OFFSET N OFFSET N2 TA C to 7 C 55 C to 25 C VIO Max AT 25 C SMALL LINE (D) AVAILABLE OPTIONS -PIN CERAMIC DIP (J) PACKAGE PLASTIC DIP (N) FLAT PACK (W) 2-PIN CHIP CARRIER (FK) 6 mv ua77cd ua77cn 5 mv ua77mj ua77mw ua77mfk The D package is available taped and reeled. Add the suffix R to the device type, (i.e., ua77cdr). 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 99, Texas Instruments Incorporated POST OFFICE BOX DALLAS, TEXAS 75265

2 schematic (each amplifier) VCC + OFFSET N2 OFFSET N VCC absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ua77c ua77m UNIT Supply voltage, VCC + (see Note ) 22 V Supply voltage, VCC (see Note ) 22 V Differential input voltage (see Note 2) ±3 ±3 V Input voltage any input (see Notes and 3) ±5 ±5 V Voltage between any offset null terminal (N/N2) and VCC ±.5 ±.5 V Duration of output short circuit (see Note ) unlimited unlimited Continuous total dissipation See Dissipation Rating Table Operating free-air temperature range to 7 55 to 25 C Storage temperature range 65 to 5 65 to 5 C Case temperature for 6 seconds FK package 26 C Lead temperature,6 mm (/6 inch) from case for 6 seconds J or W package 3 C Lead temperature,6 mm (/6 inch) from case for seconds D or N package 26 C NOTES:. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC + and VCC. 2. Differential voltages are at the noninverting input terminal with respect to the inverting input terminal. 3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 5 V, whichever is less.. The output may be shorted to ground or either power supply. For the ua77m only, the unlimited duration of the short circuit applies at (or below) 25 C case temperature or 75 C free-air temperature. DISSIPATION RATING TABLE PACKAGE TA 25 C DERATING DERATE TA = 7 C TA = 25 C POWER RATING FACTOR ABOVE TA POWER RATING POWER RATING D mw 7.6 mw/ C 5 C 6 mw FK mw. mw/ C 77 C mw 275 mw J mw. mw/ C 77 C mw 275 mw N mw 9.2 mw/ C 63 C 736 mw W mw. mw/ C 5 C 6 mw 2 mw 2 POST OFFICE BOX DALLAS, TEXAS 75265

3 electrical characteristics at specified free-air temperature, V CC± = ±5 V ua77c ua77m PARAMETER TEST CONDITIONS TA MIN TYP MAX MIN TYP MAX UNIT VIO Input offset voltage VO = VIO(adj) IIO IIB VICR VO(PP) AVD Offset voltage adjust range Input offset current Input bias current 25 C 6 5 Full range mv 25 C ±5 ±5 mv 25 C Full range C 5 5 Full range 5 Common-mode 25 C ±2 ±3 ±2 ±3 input voltage range Full range ±2 ±2 RL= kω 25 C Maximum peak-to-peak RL kω Full range 2 2 output voltage swing RL= 2 kω 25 C RL 2 kω Full range 2 2 Large-signal differential RL 2 kω, 25 C voltage amplification VO = ± V Full range 5 25 ri Input resistance 25 C.3 2.3* 2 MΩ ro Output resistance See Note 5 25 C Ω Ci Input capacitance 25 C.. pf CMRR ksvs IOS ICC PD Common-mode rejection ratio Supply-voltage sensitivity ( VIO / VCC) Short-circuit output current Supply current (each amplifier) Power dissipation (each amplifier) VIC = VICR VCC = ± 9 V to ± 5 V No load No load, VO = 25 C Full range C Full range na na V V V/mV db µv/v 25 C ±25 ± ±25 ± ma 25 C Full range C Full range Vo/Vo2 Channel separation 25 C 2 2 db All characteristics are measured under open-loop conditions with zero common-mode input voltage unless otherwise specified. Full range for ua77c is C to 7 C and for ua77m is 55 C to 25 C. *On products compliant to MIL-STD-3, Class B, this parameter is not production tested. NOTE 5: This typical value applies only at frequencies above a few hundred hertz because of the effects of drift and thermal feedback. operating characteristics, V CC ± = ± 5 V, T A = 25 C tr PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Rise time Overshoot factor VI =2mV mv, RL=2kΩ kω, CL= pf, See Figure ma mw.3 µs SR Slew rate at unity gain VI = mv, RL = 2 kω, CL = pf, See Figure.5 V/µs 5% POST OFFICE BOX DALLAS, TEXAS

4 PARAMETER MEASUREMENT INFORMATION VI V INPUT VOLTAGE WAVEFORM Input + CL = pf RL = 2 kω TEST CIRCUIT Figure. Rise Time, Overshoot, and Slew Rate APPLICATION INFORMATION + OFFSET N kω OFFSET N2 To VCC Figure 2. Input Offset Voltage Null Circuit POST OFFICE BOX DALLAS, TEXAS 75265

5 TYPICAL CHARACTERISTICS 9 INPUT OFFSET CURRENT FREE-AIR TEMPERATURE IIO Input Offset Current na ua77c TA Free-Air Temperature C Figure 3 INPUT BIAS CURRENT FREE-AIR TEMPERATURE 35 IIB Input Bias Current na ua77c TA Free-Air Temperature C Figure Data at high and low temperatures are applicable only within the rated operating free-air temperature range of the particular devices. POST OFFICE BOX DALLAS, TEXAS

6 TYPICAL CHARACTERISTICS VCC V Maximum Peak-to-Peak Output Voltage V CC MAXIMUM PEAK-TO-PEAK PUT VOLTAGE LOAD RESISTAE RL Load Resistance kω V O(PP) VCC Maximum Peak-to-Peak Output Voltage V MAXIMUM PEAK-TO-PEAK PUT VOLTAGE FREQUEY Á Á RL = kω k k k f Frequency Hz M Figure 5 Figure 6 A AVD Differential Voltage Amplification V/mV 2 2 RL = 2 kω OPEN-LOOP LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION SUPPLY VOLTAGE A AVD Differential Voltage Amplification 7 6 RL = 2 kω OPEN-LOOP LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION FREQUEY VCC ± Supply Voltage V 2 k k k M M f Frequency Hz M Figure 7 Figure 6 POST OFFICE BOX DALLAS, TEXAS 75265

7 TYPICAL CHARACTERISTICS CMRR Common-Mode Rejection Ratio db COMMON-MODE REJECTION RATIO FREQUEY 9 RS = 5 Ω VO Output Voltage mv % 9% PUT VOLTAGE ELAPSED TIME tr RL = 2 kω CL = pf k k k M M f Frequency Hz M t Time µs 2.5 Figure 9 Figure Input and Output Voltages V VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE Output Input RL = 2 kω CL = pf t Time µs Figure 9 POST OFFICE BOX DALLAS, TEXAS

8 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ( CRITICAL APPLICATIONS ). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. ILUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER S RISK. In order to minimize risks associated with the customer s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI s publication of information regarding any third party s products or services does not constitute TI s approval, warranty or endorsement thereof. Copyright 99, Texas Instruments Incorporated

AVAILABLE OPTIONS CERAMIC DIP (J) 6 mv ua747cd ua747cn. 5 mv ua747mj ua747mw ua747mfk

AVAILABLE OPTIONS CERAMIC DIP (J) 6 mv ua747cd ua747cn. 5 mv ua747mj ua747mw ua747mfk SLOS9A D97, FEBRUARY 97 REVISED OCTOBER 99 No Frequency Compensation Required Low Power Consumption Short-Circuit Protection Offset-Voltage Null Capability Wide Common-Mode and Differential Voltage Ranges