CA3140AS INTERSIL [Intersil Corporation], CA3140AS Datasheet

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CA3140AS

Manufacturer Part Number
CA3140AS
Description
4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
Manufacturer
INTERSIL [Intersil Corporation]
Datasheets
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 CA3140 Series has the same 8-lead pinout used for the
“741” and other industry standard op amps. The CA3140A and
CA3140 are intended for operation at supply voltages up to 36V
( 18V).
Ordering Information
CA3140AE
CA3140AM
(3140A)
CA3140AS
CA3140AT
CA3140E
CA3140M
(3140)
CA3140M96
(3140)
CA3140T
PART NUMBER
(BRAND)
RANGE (
-55 to 125
-55 to 125
-55 to 125
-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 Pin Metal Can
8 Pin Metal Can
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC Tape
and Reel
8 Pin Metal Can
Data Sheet
PACKAGE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
E8.3
M8.15
T8.C
T8.C
E8.3
M8.15
T8.C
PKG.
NO.
Features
• MOSFET Input Stage
• Directly Replaces Industry Type 741 in Most
Applications
• Ground-Referenced Single Supply Amplifiers in Automo-
• 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
Pinouts
1-888-INTERSIL or 321-724-7143
- Very High Input Impedance (Z
- Very Low Input Current (I
- Wide Common Mode Input Voltage Range (V
- Output Swing Complements Input Common Mode
Applications
bile and Portable Instrumentation
( seconds-Minutes-Hours)
Supply Voltage Systems
Swung 0.5V Below Negative Supply Voltage Rail
Range
September 1998
INV. INPUT
NON-INV.
OFFSET
INPUT
NON-INV.
INPUT
NULL
OFFSET
INV.
INPUT
NULL
V-
CA3140 (METAL CAN)
CA3140 (PDIP, SOIC)
2
1
2
3
4
1
3
CA3140, CA3140A
TOP VIEW
TOP VIEW
TAB
+
-
V- AND CASE
8
4
|
-
+
l
) -10pA (Typ) at 15V
Copyright
IN
5
7
File Number 957.4
STROBE
) -1.5T (Typ)
6
V+
OFFSET
NULL
©
OUTPUT
5
8
7
6
Intersil Corporation 1999
STROBE
V+
OUTPUT
OFFSET
NULL
lCR
) - Can be

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CA3140AS Summary of contents

Page 1

... PART NUMBER TEMP. o (BRAND) RANGE ( C) PACKAGE CA3140AE -55 to 125 8 Ld PDIP CA3140AM -55 to 125 8 Ld SOIC (3140A) CA3140AS -55 to 125 8 Pin Metal Can CA3140AT -55 to 125 8 Pin Metal Can CA3140E -55 to 125 8 Ld PDIP CA3140M -55 to 125 8 Ld SOIC (3140) CA3140M96 ...

Page 2

Absolute Maximum Ratings DC Supply Voltage (Between V+ and V- Terminals 36V Differential Mode Input Voltage . . . . . . . . . . . . . . . ...

Page 3

Electrical Specifications For Equipment Design PARAMETER Common Mode Rejection Ratio (See Figure 34) Common Mode Input Voltage Range (See Figure 8) Power-Supply Rejection Ratio (See Figure 36 Max Output Voltage (Note 4) (See ...

Page 4

Block Diagram + 3 INPUT - 2 Schematic Diagram BIAS CIRCUIT INVERTING 2 INPUT - + NON-INVERTING 3 INPUT 500 500 5 NOTE: All resistance ...

Page 5

Application Information Circuit Description As shown in the block diagram, the input terminals may be operated down to 0.5V below the negative supply rail. Two class A amplifier stages provide the voltage gain, and a unique class AB amplifier stage ...

Page 6

Output Circuit Considerations Excellent interfacing with TTL circuitry is easily achieved with a single 6.2V zener diode connected to Terminal 8 as shown in Figure 1. This connection assures that the maximum output signal swing will not go more positive ...

Page 7

R S 30V NO LOAD 7 120V CA3140 FIGURE 4. METHODS OF UTILIZING THE V LOAD RESISTANCE ( LOAD CAPACITANCE ( 100pF L SUPPLY VOLTAGE ...

Page 8

A 3.9k resistor is sufficient. The typical input current is on ...

Page 9

T = 125 C A FOR METAL CAN PACKAGES 6 DIFFERENTIAL DC VOLTAGE (ACROSS TERMINALS 2 AND OUTPUT STAGE TOGGLED DIFFERENTIAL DC VOLTAGE (ACROSS TERMINALS 2 AND ...

Page 10

CA3080A 360 - 2 7- SYMMETRY -15V -15V +15V 100k FROM BUFFER METER DRIVER (OPTIONAL) 120 39k -15V THIS NETWORK IS USED WHEN THE OPTIONAL BUFFER CIRCUIT IS NOT USED Top ...

Page 11

FREQUENCY 500k CALIBRATION MAXIMUM 620k FREQUENCY 7 51k ADJUSTMENT 3 + 10k CA3140 6 SWEEP 0.1 F FREQUENCY CALIBRATION MINIMUM 510 FIGURE 11. METER DRIVER AND BUFFER AMPLIFIER “LOG” SAWTOOTH 1N914 22M 1N914 0.47 ...

Page 12

This circuit can be adjusted most easily with a distortion analyzer, but a good first approximation can be made by comparing the output signal with that of a sine wave generator. The initial slope is adjusted with the potentiometer R ...

Page 13

A small heat sink VERSAWATT transistor is used as the series pass element in the fold back current system, Figure 17, since dissipation levels will only approach 10W. In this system, the D2201 diode is used for current sampling. Foldback ...

Page 14

Tone Control Circuits High slew rate, wide bandwidth, high output voltage capability and high input impedance are all characteristics required of tone control amplifiers. Two tone control circuits that exploit these characteristics of the CA3140 are shown in Figures 19 ...

Page 15

Wien Bridge Oscillator Another application of the CA3140 that makes excellent use of its high input impedance, high slew rate, and high voltage qualities is the Wien Bridge sine wave oscillator. A basic Wien Bridge oscillator is shown in Figure ...

Page 16

Pulse “droop” during the hold interval is 170pA/200pF which is 0. (i.e., 170pA/200pF). In this case, 170pA represents the typical leakage current of the CA3080A when strobed off were increased to 2000pF, the “hold-droop” rate will ...

Page 17

+15V 10k CA3140 100k OFFSET ADJUST GAIN X = ------ - = = ---------------------------- - ...

Page 18

Typical Performance Curves - 125 o 125 C 100 SUPPLY VOLTAGE (V) FIGURE 29. OPEN-LOOP VOLTAGE GAIN vs SUPPLY VOLTAGE AND TEMPERATURE R ...

Page 19

Typical Performance Curves 1000 SUPPLY VOLTAGE 15V 100 FREQUENCY (Hz) FIGURE 35. EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY Metallization Mask Layout ...

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