CA3080 CA3080A AN6668 CA3080AE CA3080AM CA3080AM96 CA3080E CA3080M CA3080M96

S E M I C O N D U C T O R 2MHz, Operational Transconductance Amplifier (OTA) November 1996 Features Description · Slew

CA3080 CA3080, CA3080A CA3080A S E M I C O N D U C T O R 2MHz, Operational Transconductance Amplifier (OTA) November 1996 Features Description · Slew Rate (Unity Gain, Compensated). . . . . . . . 50V/µs The CA3080 CA3080 and CA3080A CA3080A types are Gatable-Gain Blocks which utilize the unique operational-transconductanceamplifier (OTA) concept described in Application Note AN6668 AN6668, "Applications of the CA3080 CA3080 and CA3080A CA3080A HighPerformance Operational Transconductance Amplifiers". · Adjustable Power Consumption . . . . . . . . . 10µW to 30µW · Flexible Supply Voltage Range . . . . . . . . . . ±2V to ±15V · Fully Adjustable Gain . . . . . . . . . . . . . . 0 to gMRL Limit · Tight gM Spread: - CA3080 CA3080 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1 - CA3080A CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6:1 · Extended gM Linearity. . . . . . . . . . . . . . . . . . 3 Decades Applications · Sample and Hold · Multiplexer · Voltage Follower The CA3080 CA3080 and CA3080A CA3080A types are notable for their excellent slew rate (50V/µs), which makes them especially useful for multiplexer and fast unity-gain voltage followers. These types are especially applicable for multiplexer applications because power is consumed only when the devices are in the "ON" channel state. · Multiplier · Comparator Ordering Information PART NUMBER (BRAND) TEMP. RANGE (oC) CA3080 CA3080 PACKAGE PKG. NO. 0 to 70 8 Pin Metal Can 8 Pin Metal Can The CA3080A CA3080A's characteristics are specifically controlled for applications such as sample-hold, gain-control, multiplexing, etc. T8.C -55 to 125 CA3080A CA3080A The CA3080 CA3080 and CA3080A CA3080A types have differential input and a single-ended, push-pull, class A output. In addition, these types have an amplifier bias input which may be used either for gating or for linear gain control. These types also have a high output impedance and their transconductance (gM) is directly proportional to the amplifier bias current (IABC). T8.C CA3080AE CA3080AE -55 to 125 8 Ld PDIP E8.3 CA3080AM CA3080AM (3080A) -55 to 125 8 Ld SOIC M8.15 CA3080AM96 CA3080AM96 (3080A) -55 to 125 8 Ld SOIC Tape and Reel M8.15 CA3080E CA3080E 0 to 70 8 Ld PDIP E8.3 CA3080M CA3080M (3080) 0 to 70 8 Ld SOIC M8.15 CA3080M96 CA3080M96 (3080) 0 to 70 8 Ld SOIC Tape and Reel M8.15 Pinouts CA3080 CA3080 (PDIP, SOIC) TOP VIEW CA3080 CA3080 (METAL CAN) TOP VIEW TAB NC 1 8 NC INV. INPUT 2 7 V+ NON-INV. INPUT 3 V- 4 8 + 6 - INV. INPUT 2 AMPLIFIER BIAS INPUT 6 OUTPUT + OUTPUT 5 7 V+ 1 NON-INV. INPUT 3 4 5 BIAS V- NOTE: Pin 4 is connected to case. CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1996 3-45 File Number 475.3 CA3080 CA3080, CA3080A CA3080A Absolute Maximum Ratings Thermal Information Supply Voltage (Between V+ and V- Terminal). . . . . . . . . . . . . . 36V Differential Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V+ to VInput Signal Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA Amplifier Bias Current (IABC) . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Output Short Circuit Duration (Note 1) . . . . . . . . . . . . No Limitation Thermal Resistance (Typical, Note 2) JA (oC/W) JC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 130 N/A SOIC Package . . . . . . . . . . . . . . . . . . . 170 N/A Metal Can Package . . . . . . . . . . . . . . . 200 120 Maximum Junction Temperature (Metal Can) . . . . . . . . . . . . . 175oC Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range CA3080 CA3080. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC CA3080A CA3080A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Short circuit may be applied to ground or to either supply. 2. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications For Equipment Design, VSUPPLY = ±15V, Unless Otherwise Specified CA3080 CA3080 PARAMETER TEST CONDITIONS CA3080A CA3080A MIN TYP MAX MIN TYP MAX UNITS IABC = 5µA 25 - 0.3 - - 0.3 2 mV IABC = 500µA Input Offset Voltage TEMP 25 - 0.4 5 - 0.4 2 mV Full - - 6 - - 5 mV Input Offset Voltage Change IABC = 500µA to 5µA 25 - 0.2 - - 0.1 3 mV Input Offset Voltage Temp. Drift IABC = 100µA Full - - - - 3.0 - µV/oC Input Offset Voltage Sensitivity IABC = 500µA 25 - - 150 - - 150 µV/V 25 - - 150 - - 150 µV/V Positive Negative Input Offset Current IABC = 500µA 25 - 0.12 0.6 - 0.12 0.6 µ Input Bias Current IABC = 500µA 25 - 2 5 - 2 5 µA Full - - 7 - - 15 µA Differential Input Current IABC = 0, VDIFF = 4V 25 - 0.008 - - 0.008 5 nA Amplifier Bias Voltage IABC = 500µA 25 - 0.71 - - 0.71 - V Input Resistance IABC = 500µA 25 10 26 - 10 26 - k Input Capacitance IABC = 500µA, f = 1MHz 25 - 3.6 - - 3.6 - pF Input-to-Output Capacitance IABC = 500µA, f = 1MHz 25 - 0.024 - - 0.024 - pF Common-Mode Input-Voltage Range IABC = 500µA 25 12 to -12 13.6 to -14.6 - 12 to -12 13.6 to -14.6 - V Forward Transconductance (Large Signal) IABC = 500µA 25 6700 9600 13000 7700 9600 12000 µS Full 5400 - - 4000 - - µS Output Capacitance IABC = 500µA, f = 1MHz 25 - 5.6 - - 5.6 - pF Output Resistance IABC = 500µA 25 - 15 - - 15 - M Peak Output Current IABC = 5µA, RL = 0 25 - 5 - 3 5 7 µA IABC = 500µA, RL = 0 25 350 500 650 350 500 650 µA Full 300 - - 300 - - µA 3-46 CA3080 CA3080, CA3080A CA3080A For Equipment Design, VSUPPLY = ±15V, Unless Otherwise Specified (Continued) Electrical Specifications CA3080 CA3080 PARAMETER TEST CONDITIONS Peak Output Voltage CA3080A CA3080A TEMP MIN TYP MAX MIN TYP MAX UNITS 25 - 13.8 - 12 13.8 - V 25 - -14.5 - -12 -14.5 - V IABC = 5µA, RL = Positive Negative IABC = 500µA, RL = 25 Negative 12 13.5 - 12 13.5 - V 25 Positive -12 -14.4 - -12 -14.4 - V Amplifier Supply Current IABC = 500µA 25 0.8 1 1.2 0.8 1 1.2 mA Device Dissipation IABC = 500µA 25 24 30 36 24 30 36 mW IABC = 0, VTP = 0 25 - 0.08 - - 0.08 5 nA IABC = 0, VTP = 36V 25 - 0.3 - - 0.3 5 nA Propagation Delay IABC = 500µA 25 - 45 - - 45 - ns Common-Mode Rejection Ratio IABC = 500µA 25 80 110 - 80 110 - dB Open-Loop Bandwidth IABC = 500µA 25 - 2 - - 2 - MHz Slew Rate Uncompensated 25 - 75 - - 75 - V/µs Compensated 25 - 50 - - 50 - V/µs Magnitude of Leakage Current Schematic Diagram 7 D3 D3 Q4 D2 Q6 V+ Q7 Q5 D4 Q9 INVERTING 2 INPUT NONINVERTING 3 INPUT AMPLIFIER 5 BIAS INPUT Q8 Q1 OUTPUT Q2 6 Q10 Q3 Q11 D1 D6 V4 Typical Applications V+ = 15V VS = ±15V 0.01µF 62k 7 10k 3 51 390pF 300 2 5 + CA3080 CA3080, A LOAD (SCOPE PROBE) OUTPUT 1V/DIV. 6 5pF - 1M 4 0.01µF 10k V- = -15V INPUT 5V/DIV. TIME -0.1µs/DIV. 0.001µF FIGURE 1. SCHEMATIC DIAGRAM OF THE CA3080 CA3080 AND CA3080A CA3080A IN A UNITY-GAIN VOLTAGE FOLLOWER CONFIGURATION AND ASSOCIATED WAVEFORM 3-47 CA3080 CA3080, CA3080A CA3080A Typical Applications (Continued) 20pF 8.2k VOLTAGE-CONTROLLED CURRENT SOURCE 7 3 0.9 - 7pF C1 + 1k 1k +7.5V 3 10 - 80pF C2 4 7 0.1µF 430pF 5 + -7.5V 6 2 100k 4.7k 3 4 -7.5V MIN FREQ. SET +7.5V C4 4 - 60 -7.5V 6.2k 6 + 0.1 µF EXTERNAL SWEEPING INPUT -7.5V MAX FREQ. SET CA3080 CA3080 4 SYMMETRY 10k 7 10k 4 - 60pF CA3160 CA3160 C3 2 5 +7.5V +7.5V 30k 6.8M 6 - 2M 7.5V -7.5V 6.2k CA3080A CA3080A 2 HIGHFREQ. SHAPE THRESHOLD DETECTOR CENTERING 100k BUFFER VOLTAGE FOLLOWER +7.5V +7.5V 500 500 FREQ. ADJUST 2k 10k 50k 2-1N914 2-1N914 C5 15 - 115 HIGH-FREQ. LEVEL ADJUST FIGURE 2. 1,000,000/1 SINGLE-CONTROL FUNCTION GENERATOR - 1MHz TO 1Hz NOTE: A Square-Wave Signal Modulates The External Sweeping Input to Produce 1Hz and 1MHz, showing the 1,000,000/1 frequency range of the function generator. NOTE: The bottom trace is the sweeping signal and the top trace is the actual generator output. The center trace displays the 1MHz signal via delayed oscilloscope triggering of the upper swept output signal. FIGURE 3A. TWO-TONE OUTPUT SIGNAL FROM THE FUNCTION GENERATOR FIGURE 3B. TRIPLE-TRACE OF THE FUNCTION GENERATOR SWEEPING TO 1MHz FIGURE 3. FUNCTION GENERATOR DYNAMIC CHARACTERISTICS WAVEFORMS 3-48 CA3080 CA3080, CA3080A CA3080A Typical Applications (Continued) V+ = +15V 2.0k 7 0.01µF 3N138 3N138 - 2 CA3080A CA3080A INPUT 3 6 OUTPUT 220 + 2.0k 4 0.01µF 300pF 3k 5 SLEW RATE (IN SAMPLE MODE) = 1.3V/µs ACQUISITION TIME = 3µs (NOTE) 30k STORAGE AND PHASE COMPENSATION NETWORK SAMPLE 0V HOLD -15V V- = -15V NOTE: Time required for output to settle within ±3mV of a 4V step. FIGURE 4. SCHEMATIC DIAGRAM OF THE CA3080A CA3080A IN A SAMPLE-HOLD CONFIGURATION 30k STROBE 1N914 1N914 0 SAMPLE +15V -15 HOLD 0.1µF 1N914 1N914 +15V 5 2k INPUT 0.1µF 7 3 2k CA3080A CA3080A 6 3 - 2 3.6k 7 + + 6 CA3140 CA3140 4 2 4 2k 0.1 µF 1 0.1µF 5 100k -15V 2k 200pF -15V 2k 200pF 400 0.1µF SIMULATED LOAD NOT REQUIRED FIGURE 5. SAMPLE AND HOLD CIRCUIT 3-49 30pF CA3080 CA3080, CA3080A CA3080A Typical Applications (Continued) Top Trace: Output Signal 5V/Div., 2µs/Div. Input Signal 5V/Div., 2µs/Div. Difference of Input and Output Signals Through Tektronix Amplifier 7A13 5mV/Div., 2µs/Div. Bottom Trace: Center Trace: FIGURE 6. LARGE SIGNAL RESPONSE AND SETTLING TIME FOR CIRCUIT SHOWN IN FIGURE 23 Top Trace: Bottom Trace: System Output; 100mV/Div., 500ns/Div. Sampling Signal; 20V/Div., 500ns/Div. Top Trace: Bottom Trace: FIGURE 7. SAMPLING RESPONSE FOR CIRCUIT SHOWN IN FIGURE 23 THERMOCOUPLE 6.2K 8 5 3 5 6 13 G + CA3079 CA3079 1N914 1N914 RF 8 7 10 120V AC MT1 60Hz 4 6 4 20K MT2 2 CA3080A CA3080A 2K LOAD 5K 4W - 7 2 150K 6.2K FIGURE 8. INPUT AND OUTPUT RESPONSE FOR CIRCUIT SHOWN IN FIGURE 23 + 100µF 50K 2K Output; 50mV/Div., 200ns/Div. Input; 50mV/Div., 200ns/Div. 9 11 1N914 1N914 NOTE: All resistors 1/2 watt, unless otherwise specified. FIGURE 9. THERMOCOUPLE TEMPERATURE CONTROL WITH CA3079 CA3079 ZERO VOLTAGE SWITCH AS THE OUTPUT AMPLIFIER 3-50 CA3080 CA3080, CA3080A CA3080A Typical Applications (Continued) SAMPLE CONTROL AMPLIFIER +7.5V SAMPLE READ-OUT AMPLIFIER 7 R1 + 3 INPUT +7.5V 2K CA3080A CA3080A (OTA) 6 3 0.1µF + 2K - 2 C3 7 R4 CA3130 CA3130 4 8 1 -7.5V 5 C2 0.1µF R2 SAMPLE 0V HOLD -7.5 STROBE 15K R6 100K C1 200pF R3 400 OUTPUT 4 5 R2 2K 6 - 2 C5 156 pF R5 2K NULLING STORAGE AND PHASE COMPENSATION R7 2K C4 0.1 µF CL e.g. 30pF (TYP) C6 0.1µF -7.5V FIGURE 10. SCHEMATIC DIAGRAM OF THE CA3080A CA3080A IN A SAMPLE-HOLD CIRCUIT WITH BIMOS OUTPUT AMPLIFIER 0 0 0 0 0 Top Trace: Center Trace: Bottom Trace: Output; 5V/Div., 2µs/Div. Differential Comparison of Input and Output 2mV/Div., 2µs/Div. Input; 5V/Div., 2µs/Div. FIGURE 11. LARGE-SIGNAL RESPONSE FOR CIRCUIT SHOWN IN FIGURE 28 Top Trace: Bottom Trace: Output 20mV/Div., 100ns/Div. Input 200mV/Div., 100ns/Div. FIGURE 12. SMALL-SIGNAL RESPONSE FOR CIRCUIT SHOWN IN FIGURE 28 3-51 CA3080 CA3080, CA3080A CA3080A Typical Applications (Continued) V+ = 15V 56k 7 50mV 0 -50mV IN IABC = 500µA 5 + 3 CA3080 CA3080,A 51 OUT 6 - 2 0 1.2M 1N914 1N914 4 V- = -15V INPUT tPLH tPHL OUTPUT FIGURE 13. PROPAGATION DELAY TEST CIRCUIT AND ASSOCIATED WAVEFORMS Typical Performance Curves 5 INPUT OFFSET CURRENT (nA) INPUT OFFSET VOLTAGE (mV) 3 2 103 125oC SUPPLY VOLTS: VS = ±15V 4 90oC -55oC 1 70oC 0 -1 -2 -3 -55oC 90oC 25oC 25oC 70oC -4 -5 125oC -6 SUPPLY VOLTS: VS = ±15V 102 10 -55oC 1 25oC 0.1 125oC -7 -8 0.1 1 10 100 0.01 0.1 1000 AMPLIFIER BIAS CURRENT (µA) FIGURE 14. INPUT OFFSET VOLTAGE vs AMPLIFIER BIAS CURRENT PEAK OUTPUT CURRENT (µA) INPUT BIAS CURRENT (nA) 104 103 102 -55oC 25oC 1 0.1 0.1 10 100 1000 FIGURE 15. INPUT OFFSET CURRENT vs AMPLIFIER BIAS CURRENT 104 SUPPLY VOLTS: VS = ±15V 10 1 AMPLIFIER BIAS CURRENT (µA) 125oC SUPPLY VOLTS: VS = ±15V LOAD RESISTANCE = 0 103 125oC 25oC -55oC 102 10 1 0.1 1 10 100 AMPLIFIER BIAS CURRENT (µA) 1000 0.1 FIGURE 16. INPUT BIAS CURRENT vs AMPLIFIER BIAS CURRENT 1 10 100 AMPLIFIER BIAS CURRENT (µA) 1000 FIGURE 17. PEAK OUTPUT CURRENT vs AMPLIFIER BIAS CURRENT 3-52 CA3080 CA3080, CA3080A CA3080A Typical Performance Curves 104 SUPPLY VOLTS: VS = ±15V TA = 25oC LOAD RESISTANCE = 14.5 14 V+CMR 13.5 V+OM 13 0 -13 -13.5 -14 V-OM -14.5 V-CMR -15 0.1 105 -55oC 102 10 125oC 1 -55oC, 25oC 0.1 FORWARD TRANSCONDUCTANCE (µS) VS = ±15V VS = ±6V VS = ±3V 10 1 1 10 100 104 -55oC 25oC 103 125oC 102 10 1000 0.1 1 +36V 7 1 TEST POINT (VTP) 2 CA3080 CA3080, A 100 1000 6 3 5 4 FIGURE 21. TRANSCONDUCTANCE vs AMPLIFIER BIAS CURRENT MAGNITUDE OF LEAKAGE CURRENT (nA) FIGURE 20. TOTAL POWER DISSIPATION vs AMPLIFIER BIAS CURRENT 0V 10 AMPLIFIER BIAS CURRENT (µA) AMPLIFIER BIAS CURRENT (µA) 36V 1000 105 SUPPLY VOLTS: V = ±15V S 1 0.1 1 10 100 AMPLIFIER BIAS CURRENT (µA) FIGURE 19. AMPLIFIER SUPPLY CURRENT vs AMPLIFIER BIAS CURRENT 104 102 125oC 103 1000 TA = 25oC 103 25oC SUPPLY VOLTS: VS = ±15V 0.1 1 10 100 AMPLIFIER BIAS CURRENT (µA) FIGURE 18. PEAK OUTPUT VOLTAGE vs AMPLIFIER BIAS CURRENT DEVICE POWER DISSIPATION (µW) AMPLIFIER SUPPLY CURRENT (µA) PEAK OUTPUT VOLTAGE (V) COMMON MODE INPUT VOLTAGE (V) 15 (Continued) 100 SUPPLY VOLTS: VS = ±15V 10 V2 = V3 = V6 = 36V 1 0V 0.1 0.01 -50 FIGURE 22. LEAKAGE CURRENT TEST CIRCUIT -25 0 50 25 75 TEMPERATURE (oC) 100 FIGURE 23. LEAKAGE CURRENT vs TEMPERATURE 3-53 125 CA3080 CA3080, CA3080A CA3080A Typical Performance Curves (Continued) SUPPLY VOLTS: VS = ±15V DIFFERENTIAL INPUT CURRENT (pA) V+ = 15V 7 1 2 CA3080 CA3080, A VDIFF = ±4V 6 3 5 4 104 103 125oC 102 1 0 V- = -15V FIGURE 24. DIFFERENTIAL INPUT CURRENT TEST CIRCUIT 900 AMPLIFIER BIAS VOLTAGE (mV) INPUT RESISTANCE (M) 100 10 1 0.1 0.01 1 10 100 AMPLIFIER BIAS CURRENT (µA) 5 CO CI 3 7 800 -55oC 700 600 25oC 500 400 125oC 300 200 100 105 SUPPLY VOLTS: VS = ±15V f = 1 MHz TA = 25oC 4 6 1 10 100 AMPLIFIER BIAS CURRENT (µA) 1000 FIGURE 27. AMPLIFIER BIAS VOLTAGE vs AMPLIFIER BIAS CURRENT OUTPUT RESISTANCE (M) INPUT AND OUTPUT CAPACITANCE (pF) 6 2 3 4 5 INPUT DIFFERENTIAL VOLTAGE (V) SUPPLY VOLTS: VS = ±15V 0 0.1 1000 FIGURE 26. INPUT RESISTANCE vs AMPLIFIER BIAS CURRENT 7 1 FIGURE 25. INPUT CURRENT vs INPUT DIFFERENTIAL VOLTAGE SUPPLY VOLTS: VS = ±15V TA = 25oC 0.1 25oC 10 2 SUPPLY VOLTS: VS = ±15V TA = 25oC 104 103 102 10 1 0 0.1 1 1 10 100 AMPLIFIER BIAS CURRENT (µA) 0.1 1000 FIGURE 28. INPUT AND OUTPUT CAPACITANCE vs AMPLIFIER BIAS CURRENT 1 10 100 AMPLIFIER BIAS CURRENT (µA) FIGURE 29. OUTPUT RESISTANCE vs AMPLIFIER BIAS CURRENT 3-54 1000 CA3080 CA3080, CA3080A CA3080A (Continued) INPUT - TO - OUTPUT CAPACITANCE (pF) Typical Performance Curves V+ 0.01µF 7 2 CA3080 CA3080, A 6 3 5 4 0.01µF f = 1 MHz o 0.06 TA = 25 C 0.05 0.04 0.03 0.02 0.01 0 V- FIGURE 30. INPUT-TO-OUTPUT CAPACITANCE TEST CIRCUIT 2 4 6 8 10 12 14 16 POSITIVE AND NEGATIVE SUPPLY VOLTAGE (V) 18 FIGURE 31. INPUT-TO-OUTPUT CAPACITANCE vs SUPPLY VOLTAGE All Harris Semiconductor products are manufactured, assembled and tested under ISO9000 ISO9000 quality systems certification. Harris Semiconductor products are sold by description only. Harris Semiconductor reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Harris is believed to be accurate and reliable. However, no responsibility is assumed by Harris or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Harris or its subsidiaries. Sales Office Headquarters For general information regarding Harris Semiconductor and its products, call 1-800-4-HARRIS 1-800-4-HARRIS NORTH AMERICA Harris Semiconductor P. O. Box 883, Mail Stop 53-210 Melbourne, FL 32902 TEL: 1-800-442-7747 (407) 729-4984 FAX: (407) 729-5321 EUROPE Harris Semiconductor Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 S E M I C O N D U C TO R 3-55 ASIA Harris Semiconductor PTE Ltd. No. 1 Tannery Road Cencon 1, #09-01 Singapore 1334 TEL: (65) 748-4200 FAX: (65) 748-0400