CA3140A Intersil Corporation, CA3140A Datasheet

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CA3140A

Manufacturer Part Number
CA3140A
Description
Manufacturer
Intersil Corporation
Datasheet

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4.5MHz, BiMOS Operational Amplifier with
MOSFET Input/Bipolar Output
The CA3140A and CA3140 are integrated circuit operational
amplifiers that combine the advantages of high voltage
PMOS transistors with high voltage bipolar transistors on a
single monolithic chip.
The CA3140A and CA3140 BiMOS operational amplifiers
feature gate protected 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
operation in unity gain follower operation, and additionally,
have access terminal for a supplementary external capacitor
if additional frequency roll-off is desired. Terminals are also
provided for use in applications requiring input offset voltage
nulling. The use of PMOS field effect transistors in the input
stage results in common mode input voltage capability down
to 0.5V below the negative supply terminal, an important
attribute for single supply applications. The output stage
uses bipolar transistors and includes built-in protection
against damage from load terminal short circuiting to either
supply rail or to ground.
The CA3140A and CA3140 are intended for operation at
supply voltages up to 36V (±18V).
Ordering Information
CA3140AE
CA3140AM
(3140A)
CA3140E
CA3140M
(3140)
CA3140M96
(3140)
PART NUMBER
(BRAND)
RANGE (
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
TEMP.
®
o
C)
1
8 Ld PDIP
8 Ld SOIC
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC Tape and Reel
Data Sheet
PACKAGE
E8.3
M8.15
E8.3
M8.15
PKG.
NO.
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• MOSFET Input Stage
• Directly Replaces Industry Type 741 in Most
• Applications
Applications
• Ground-Referenced Single Supply Amplifiers in
• Sample and Hold Amplifiers
• Long Duration Timers/Multivibrators
• Photocurrent Instrumentation
• Peak Detectors
• Active Filters
• Comparators
• Interface in 5V TTL Systems and Other Low
• All Standard Operational Amplifier Applications
• Function Generators
• Tone Controls
• Power Supplies
• Portable Instruments
• Intrusion Alarm Systems
Pinout
- Very High Input Impedance (Z
- Very Low Input Current (I
- Wide Common Mode Input Voltage Range (V
- Output Swing Complements Input Common Mode
Automobile and Portable Instrumentation
(µseconds-Minutes-Hours)
Supply Voltage Systems
be Swung 0.5V Below Negative Supply Voltage Rail
Range
November 2002
All other trademarks mentioned are the property of their respective owners.
INV. INPUT
|
NON-INV.
OFFSET
Intersil (and design) is a registered trademark of Intersil Americas Inc.
INPUT
NULL
V-
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
CA3140 (PDIP, SOIC)
1
2
3
4
CA3140, CA3140A
TOP VIEW
-
+
l
) -10pA (Typ) at ±15V
IN
) -1.5TΩ (Typ)
5
8
7
6
STROBE
V+
OUTPUT
OFFSET
NULL
lCR
FN957.7
) - Can

Related parts for CA3140A

CA3140A Summary of contents

Page 1

... The output stage uses bipolar transistors and includes built-in protection against damage from load terminal short circuiting to either supply rail or to ground. The CA3140A and CA3140 are intended for operation at supply voltages up to 36V (±18V). Ordering Information PART NUMBER TEMP ...

Page 2

... 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 ...

Page 3

... 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 ...

Page 4

... 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 ...

Page 5

... Q which, in turn, drives CA3140, CA3140A When the CA3140 is operating such that output Terminal 6 is sinking current to the V- bus, transistor Q sinking element. Transistor Q with current fed by way turn, is biased by current flow through R R ...

Page 6

... V- FIGURE 3A. BASIC FIGURE 3. THREE OFFSET VOLTAGE NULLING METHODS 6 CA3140, CA3140A level shifting circuitry usually associated with the 741 series of operational amplifiers. Figure 4 shows some typical configurations. Note that a series resistor, R available to the driven device. Moreover recommended that a series diode and shunt diode be used at the thyristor ...

Page 7

... Figure 5 shows the typical settling time required to reach 1mV or 10mV of the final value for various levels of large signal inputs for the voltage follower and inverting unity gain amplifiers. 7 CA3140, CA3140A LOAD SINKING CURRENT CAPABILITY OF THE CA3140 SERIES ...

Page 8

... SUPPLY VOLTAGE (V+, V-) FIGURE 8. OUTPUT VOLTAGE SWING CAPABILITY AND COMMON MODE INPUT VOLTAGE RANGE vs SUPPLY VOLTAGE 8 CA3140, CA3140A input offset voltage) due to the application of large differential input voltages that are sustained over long periods at elevated temperatures. Both applied voltage and temperature accelerate these changes ...

Page 9

... Frequency Adjustment Control. This low-driving impedance requirement is easily met by using a CA3140 connected as a voltage follower. Moreover, a meter may be 9 CA3140, CA3140A placed across the input to the CA3080A to give a logarithmic analog indication of the function generator’s frequency. Analog frequency readout is readily accomplished by the ...

Page 10

... 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 ...

Page 11

... 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 ...

Page 12

... Unlike many regulator systems using comparators having a bipolar transistor input stage, a high impedance reference voltage divider from a single supply can be used in connection with the CA3140 (see Figure 15). 12 CA3140, CA3140A . The final 2 INPUT FIGURE 15. BASIC SINGLE SUPPLY VOLTAGE REGULATOR Essentially, the regulators, shown in Figures 16 and 17, are connected as non inverting power operational amplifiers with a gain of 3 ...

Page 13

... 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. ...

Page 14

... TONE CONTROL NETWORK 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 ...

Page 15

... As the frequency is increased, the output amplitude must be reduced to prevent the output signal from becoming slew- rate limited. An output frequency of 180kHz will reach a slew rate of approximately 9V/µs when its amplitude is 16V 15 CA3140, CA3140A ...

Page 16

... Bottom Trace: Input; 20V/Div., 500ns/Div. FIGURE 24. SAMPLE AND HOLD SYSTEM DYNAMIC CHARACTERISTICS WAVEFORMS 16 CA3140, CA3140A Current Amplifier The low input terminal current needed to drive the CA3140 makes it ideal for use in current amplifier applications such as the one shown in Figure 25 (see Note 14). In this circuit, ...

Page 17

... 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 ...

Page 18

... 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 ...

Page 19

... 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) = ∆ ...

Page 20

... 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 ...

Page 21

... 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 ...

Page 22

... 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 ...

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