CA3140 Intersil Corporation, CA3140 Datasheet
CA3140
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CA3140 Summary of contents
Page 1
... MOSFET (PMOS) transistors in the input circuit to provide very high input impedance, very low input current, and high speed performance. The CA3140A and CA3140 operate at supply voltage from 4V to 36V (either single or dual supply). These operational amplifiers are internally phase compensated to achieve stable ...
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... PARAMETER Input Offset Voltage Input Offset Current Input Current Large Signal Voltage Gain (Note 3) (See Figures 6, 29) 2 CA3140, CA3140A Thermal Information Thermal Resistance (Typical, Note 1) PDIP Package . . . . . . . . . . . . . . . . . . . SOIC Package . . . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s 300 ...
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... Maximum Output Voltage (See Figures 2, 8) Maximum Output Current: Slew Rate (See Figure 31) Gain-Bandwidth Product (See Figure 30) Supply Current (See Figure 32) Device Dissipation Sink Current from Terminal 8 to Terminal 4 to Swing Output Low 3 CA3140, CA3140A o = ±15V Unless Otherwise Specified (Continued) SUPPLY A CA3140 ...
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... INVERTING 2 INPUT - + NON-INVERTING 3 INPUT R 2 500Ω 500Ω 5 OFFSET NULL NOTE: All resistance values are in ohms. 4 CA3140, CA3140A 2mA BIAS CIRCUIT CURRENT SOURCES AND REGULATOR 200µA 1.6mA 200µA ≈ A ≈ 10,000 C 1 12pF NULL ...
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... Bias Circuit Quiescent current in all stages (except the dynamic current sink) of the CA3140 is dependent upon bias current flow in R The function of the bias circuit is to establish and maintain 13 constant current flow through D connected transistor mirror connected in parallel with the base emitter junctions of Q ...
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... Low Voltage Operation Operation at total supply voltages as low possible with the CA3140. A current regulator based upon the PMOS threshold voltage maintains reasonable constant operating current and hence consistent performance down to these lower voltages. 1.0 10 ...
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... FIGURE 5. SETTLING TIME vs INPUT VOLTAGE The exceptionally fast settling time characteristics are largely due to the high combination of high gain and wide bandwidth of the CA3140; as shown in Figure 6. Input Circuit Considerations As mentioned previously, the amplifier inputs can be driven below the Terminal 4 potential, but a series current limiting ...
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... CA3140 is used as a unity gain voltage follower. This resistance prevents the possibility of extremely large input signal transients from forcing a signal through the input protection network and directly driving the internal constant current source which could result in positive feedback via the output terminal. A 3.9kΩ ...
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... Sine Wave Shaper The circuit shown in Figure 12 uses a CA3140 as a voltage follower in combination with diodes from the CA3019 Array to convert the triangular signal from the function generator to a sine-wave output signal having typically less than 2% THD. The basic zero crossing slope is established by the 10kΩ ...
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... This asymmetry is due to slightly different positive and negative integration from the CA3080A and from the PC board and component leakages at the 100pA level. FIGURE 10C. FUNCTION GENERATOR WITH FIXED FREQUENCIES 10 CA3140, CA3140A HIGH +15V FREQUENCY LEVEL 0.1 7-60pF µ ...
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... CA3140 + 15V 43kΩ CA3140 - 2 LOG VIO 1 25kΩ 3.9Ω -15V 100Ω 390Ω 11 CA3140, CA3140A TO CA3080A OF FUNCTION CA3080A GENERATOR (FIGURE 10) 4 4.7kΩ 5 +15V METER 620Ω SENSITIVITY 12kΩ ADJUSTMENT 1kΩ 2.4kΩ 200µA M METER 2.5 kΩ 510Ω ...
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... Sweeping Generator Figure 13 shows a sweeping generator. Three CA3140s are used in this circuit. One CA3140 is used as an integrator, a second device is used as a hysteresis switch that determines the starting and stopping points of the sweep. A third CA3140 is used as a logarithmic shaping network for the log function ...
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... FIGURE 18A. SUPPLY TURN-ON AND TURNOFF CHARACTERISTICS FIGURE 18. WAVEFORMS OF DYNAMIC CHARACTERISTICS OF POWER SUPPLY CURRENTS SHOWN IN FIGURES 16 AND 17 13 CA3140, CA3140A regulation also remains constant. Line regulation is 0.1% per volt. Hum and noise voltage is less than 200µV as read with a meter having a 10MHz bandwidth. ...
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... FIGURE 20. BAXANDALL TONE CONTROL CIRCUIT USING CA3140 SERIES 14 CA3140, CA3140A least 20kHz due to the high slew rate of the CA3140. The amplifier gain is 3dB down from its “flat” position at 70kHz. Figure 19 shows another tone control circuit with similar boost and cut specifications. The wideband gain of this circuit is equal to the ultimate boost or cut plus one, which in this case is a gain of eleven ...
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... CL R Figure 23 shows a very simple sample-and-hold system S using the CA3140 as the readout amplifier for the storage capacitor. The CA3080A serves as both input buffer amplifier and low feed-through transmission switch (see Note 13). System offset nulling is accomplished with the CA3140 via its offset nulling terminals. A typical simulated load of 2kΩ ...
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... The parallel diode network connected between Terminal 3 of the CA3080A and Terminal 6 of the CA3140 prevents large input signal feedthrough across the input terminals of the CA3080A to the 200pF storage capacitor when the CA3080A is strobed off ...
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... CA3140 0.01µF -15V BW (-3dB) = 140kHz TOTAL NOISE VOLTAGE (REFERRED TO INPUT) = 48µV (TYP) FIGURE 27. TEST CIRCUIT AMPLIFIER (30dB GAIN) USED FOR WIDEBAND NOISE MEASUREMENT 17 CA3140, CA3140A 0.1µF INPUT 1N914 10kΩ PEAK ADJUST 10kΩ OUTPUT 0 INPUT 0 NOISE VOLTAGE OUTPUT (Measurement made with Tektronix 7A13 differential amplifier ...
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... FIGURE 31. SLEW RATE vs SUPPLY VOLTAGE AND TEMPERATURE = ±15V SUPPLY VOLTAGE 10K 100K FREQUENCY (Hz) FIGURE 33. MAXIMUM OUTPUT VOLTAGE SWING vs FREQUENCY 18 CA3140, CA3140A FIGURE 30. GAIN BANDWIDTH PRODUCT vs SUPPLY 125 ...
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... Typical Performance Curves 1000 = ±15V SUPPLY VOLTAGE 100 FREQUENCY (Hz) FIGURE 35. EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY 19 CA3140, CA3140A (Continued) 100 ±15V SUPPLY VOLTAGE +PSRR -PSRR POWER SUPPLY REJECTION RATIO (PSRR) = ∆ ...
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... Grid graduations are in mils (10 The photographs and dimensions represent a chip when it is part of the wafer. When the wafer is cut into chips, the cleavage angles are 57 chip. Therefore, the isolated chip is actually 7 mils (0.17mm) larger in both dimensions. 20 CA3140, CA3140A 4-10 (0.102-0.254) 62-70 (1 ...
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... B1 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). 21 CA3140, CA3140A E8.3 8 LEAD DUAL-IN-LINE PLASTIC PACKAGE SYMBOL ...
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... However, no responsibility is assumed by Intersil 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 Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 22 CA3140, CA3140A M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC ...