TC913A TC913B TC913 TC7650 OP-04 TLC322 LM358 ICL7621 OP-14 MC1458 TL082

OPERATIONAL AMPLIFIERS TC913A TC913A TC913B TC913B DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS FEATURES GENERAL DESCRIPTION s The

DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913A TC913A TC913A TC913B TC913B TC913B TC913B DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS FEATURES GENERAL DESCRIPTION s The TC913 TC913 is the world's first complete monolithic, dual auto-zeroed operational amplifier. The TC913 TC913 sets a new standard for low-power, precision dual-operational amplifiers. Chopper-stabilized or auto-zeroed amplifiers offer low offset voltage errors by periodically sampling offset error, and storing correction voltages on capacitors. Previous single amplifier designs required two user-supplied, external 0.1µF error storage correction capacitors - much too large for on-chip integration. The unique TC913 TC913 architecture requires smaller capacitors, making on-chip integration possible. Microvolt offset levels are achieved and external capacitors are not required. The TC913 TC913 system benefits are apparent when contrasted with a TC7650 TC7650 chopper amplifier circuit implementation. A single TC913 TC913 replaces two TC7650 TC7650's and four capacitors. Five components and assembly steps are eliminated. The TC913 TC913 pinout matches many popular dualoperational amplifiers: OP-04 OP-04, TLC322 TLC322, LM358 LM358, and ICL7621 ICL7621 are typical examples. In many applications, operating from dual 5V power supplies or single supplies, the TC913 TC913 offers superior electrical performance, and can be a functional drop-in replacement; printed circuit board rework is not necessary. The TC913 TC913's low offset voltage error eliminates offset voltage trim potentiometers often needed with bipolar and low-accuracy CMOS operational amplifiers. The TC913 TC913 takes full advantage of TelCom's proprietary CMOS technology. Unity gain bandwidth is 1.5MHz and slew rate is 2.5V/µsec. s s s s s s s s s s First Monolithic Dual Auto-Zeroed Operational Amplifier Chopper Amplifier Performance Without External Capacitors - VOS . 15µV Max - VOS Drift . 0.15µV/°C Max - Saves Cost/Assembly of Four "Chopper" Capacitors SOIC Packages Available High DC Gain . 120dB Low Supply Current . 650µA Low Input Voltage Noise (0.1Hz to 10Hz) . 0.65µVP-P Wide Common-Mode Voltage Range . VSS to VDD 2V High Common-Mode Rejection . 116dB Dual or Single Supply Operation . ±3.3V to ±8.3V +6.5V to +16V Excellent AC Operating Characteristics - Slew Rate . 2.5V/µsec - Unity-Gain Bandwidth . 1.5MHz Pin Compatible With LM358 LM358, OP-14 OP-14, MC1458 MC1458, ICL7621 ICL7621, TL082 TL082, TLC322 TLC322 ORDERING INFORMATION Temp. Range Part No. 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 15µV 15µV 30µV 30µV Package TC913ACOA TC913ACOA TC913ACPA TC913ACPA TC913BCOA TC913BCOA TC913BCPA TC913BCPA Maximum Offset Voltage FUNCTIONAL BLOCK DIAGRAM VDD VSS 4 PIN CONFIGURATION (SOIC and DIP) 8 VOS CORRECTION AMPLIFIER + A A B * 7 OUT B IN A 2 +IN A 3 5 +IN B + V SS 4 6 IN B 8 V DD A B INTERNAL OSCILLATOR (f OSC 200 Hz) * 7 OUT B V SS 4 + B OUT A 1 +IN A 3 A + IN A 2 8 V DD + OUT A 1 B INPUT A INPUT B INPUT A INPUT B 6 IN B 2 6 5 3 5 +IN B LOW IMPEDANCE OUTPUT BUFFER + + MAIN AMPLIFIER 1 OF 2 AMPLIFIERS SHOWN TC913ACPA TC913ACPA TC913BCPA TC913BCPA TC913A/B-8 TC913A/B-8 TC913ACOA TC913ACOA TC913BCOA TC913BCOA *NOTE: Internal capacitors. No external capacitors required. 9/3/96 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. 1 TC913 TC913 1 OUTPUT A OUTPUT B 7 DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913A TC913B TC913B Package Power Dissipation (TA 70°C) Plastic SOIC . 470mW Plastic DIP . 730mW ABSOLUTE MAXIMUM RATINGS* Total Supply Voltage (VDD to VSS ) . +18V Input Voltage . (VDD + 0.3V) to (VSS 0.3V) Current into Any Pin .10mA While Operating . 100µA Storage Temperature Range . 65°C to +150°C Lead Temperature (Soldering, 10 sec) . +300°C Operating Temperature Range C Device . 0°C to +70°C *Static-sensitive device. Unused devices should be stored in conductive material. Stresses above 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 above those indicated in the operational sections of the specifications is not implied. ELECTRICAL CHARACTERISTICS: VS = ±5V, TA = +25°C, unless otherwise indicated. Min TC913A TC913A Typ Max Min TC913B TC913B Typ Max Unit - - - 5 0.05 0.05 15 0.15 0.15 - - - 15 0.1 0.1 30 0.25 0.25 µV µV/°C µV/°C - - - - - - - 110 - - - 5 - 0.6 11 116 90 3 4 20 1 - - - - - - - - - - 100 - - - 10 - 0.6 11 110 120 4 6 40 1 - - - pA nA nA pA nA µVP-P µVP-P dB VSS - VDD 2 VSS - VDD 2 V RL = 10 k, VO = ±4V 115 120 - 110 120 - dB RL = 10 k Closed Loop Gain = +1 VSS + 0.3 - - 1.5 VDD 0.9 - VSS + 0.3 - - 1.5 VDD 0.9 - RL = 10 k, CL = 50pF ±3.3V VS ±5.5V - 110 2.5 - - - - 100 2.5 - - - ± 3.3 6.5 - - - 0.65 ± 8.3 16 0.85 ± 3.3 6.5 - - - - ± 8.3 16 1.1 Symbol Parameter Test Conditions VOS TCVOS TA = +25°C 0°C TA +70°C 25°C TA +85°C (Note 1) TA = +25°C 0°C TA +70°C 25°C TA +85°C TA = +25°C TA = +85°C 0.1 to 1 Hz, RS 100 0.1 to 10 Hz, RS 100 VSS VCM VDD 2.2V IB IOS eN CMRR CMVR AOL VOUT BW SR PSRR VS IS NOTE: Input Offset Voltage Average Temperature Coefficient of Input Offset Voltage Average Input Bias Current Average Input Offset Current Input Voltage Noise Common-Mode Rejection Ratio Common-Mode Voltage Range Open-Loop Voltage Gain Output Voltage Swing Closed-Loop Bandwidth Slew Rate Power Supply Rejection Ratio Operating Supply Voltage Range Quiescent Supply Current Split Supply Single Supply VS = ±5V 1. Characterized; not 100% tested. 2 V MHz V/µsec dB V V mA DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913A TC913B TC913B Theory of Operation Overload Recovery Each of the TC913 TC913's two op-amps actually consists of two amplifiers. A main amplifier is always connected from the input to the output. A separate nulling amplifier alternately nulls its own offset and then the offset of the amplifier. Since each amplifier is continuously being nulled, offset voltage drift with time, temperature, and power supply variations is greatly reduced. All nulling circuitry is internal and the nulling operation is transparent to the user. Offset nulling voltages are stored on two internal capacitors. An internal oscillator and control logic, shared by the TC913 TC913's two amplifiers, control the nulling process. The TC913 TC913 recovers quickly from output saturation. Typical recovery time from positive output saturation is 20msec. Negative output saturation recovery time is typically 5msec. Avoiding Latch-Up Junction-isolated CMOS circuits inherently contain a parasitic p-n-p-n transistor circuit. Voltages exceeding the supplies by 0.3V should not be applied to the device pins. Larger voltages can turn the p-n-p-n device on, causing excessive device power supply current and power dissipation. The TC913 TC913's power supplies should be established at the same time or before input signals are applied. If this is not possible, input current should be limited to 0.1mA to avoid triggering the p-n-p-n structure. Pin Compatibility The TC913 TC913 pinout is compatible with OP-14 OP-14, LM358 LM358, MC1458 MC1458, LT1013 LT1013, TLC322 TLC322, and similar dual op-amps. In many circuits operating from single or ±5V supplies, the TC913 TC913 is a drop-in replacement offering DC performance rivaling that of the best single op-amps. The TC913 TC913's amplifiers include a low-impedance class AB output buffer. Some previous CMOS chopper amplifiers used a high-impedance output stage which made open-loop gain dependent on load resistance. The TC913 TC913's open-loop gain is not dependent on load resistance. 3 DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913A TC913B TC913B TYPICAL CHARACTERISTICS Input Offset Voltage vs. Common-Mode Voltage 1200 1000 800 600 400 200 0 2 3 4 5 6 ± SUPPLY VOLTAGE (V) 7 8 ± OUTPUT VOLTAGE (V) Output Voltage Swing vs. Load Resistance TA = +25°C VS = ±5V 4.2 30 VS = ±5V TA = +25°C 40 CLOSED-LOOP GAIN (dB) INPUT OFFSET VOLTAGE (µV) SUPPLY CURRENT (µA) TA = +25°C 5.0 Gain and Phase vs. Frequency 50 35 25 20 15 PHASE 30 5 0 6 5 4 3 2 1 0 1 2 3 4 INPUT COMMON-MODE VOLTAGE (V) 90 10 45 0 0 10 45 20 90 135 40 10k 180 10M 100k 1M FREQUENCY (Hz) Positive Overload Recovery Time RL = 10 k TA = +25°C +SWING OUTPUT = 2 V/DIV INPUT 0V 0V 2.6 OUTPUT = 2 V/DIV 1.8 GAIN = 20 1k 10k 100k LOAD RESISTANCE () 1M 135 GAIN 20 3.4 1.0 100 180 30 10 Negative Overload Recovery Time SWING 225 VS = ±5V TA = +25°C RL = 10 k INPUT INPUT GAIN = 20 HORIZONTAL SCALE = 20 msec/DIV 4 HORIZONTAL SCALE = 20 msec/DIV PHASE (deg) Supply Current vs. ± Supply Voltage DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913A TC913B TC913B PACKAGE DIMENSIONS PIN 1 8-Pin Plastic DIP .260 (6.60) .240 (6.10) .045 (1.14) .030 (0.76) .070 (1.78) .045 (1.14) .310 (7.87) .290 (7.37) .400 (10.16) .348 (8.84) .200 (5.08) .140 (3.56) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) 3°MIN. .400 (10.16) .310 (7.87) .022 (0.56) .015 (0.38) PIN 1 indicated by dot and / or beveled edge 8-Pin Plastic SOIC .157 (3.99) .150 (3.81) .244 (6.20) .228 (5.79) .050 (1.27) TYP. .197 (5.00) .189 (4.80) .069 (1.75) .053 (1.35) .010 (0.25) .007 (0.18) 8°MAX. .018 (0.46) .010 (0.25) .014 (0.36) .004 (0.10) .050 (1.27) .016 (0.40) Dimensions: inches (mm) Sales Offices TelCom Semiconductor 1300 Terra Bella Avenue P.O. Box 7267 Mountain View, CA 94039-7267 TEL: 650-968-9241 FAX: 650-967-1590 E-Mail: liter@c2smtp.telcom-semi.com TelCom Semiconductor Austin Product Center 9101 Burnet Rd. Suite 214 Austin, TX 78758 TEL: 512-873-7100 FAX: 512-873-8236 TelCom Semiconductor H.K. Ltd. 10 Sam Chuk Street, Ground Floor San Po Kong, Kowloon Hong Kong TEL: 852-2324-0122 FAX: 852-2354-9957 Printed in the U.S.A. 5