on November 15th 75

CA3140E Operational Amplifier: Pinout, Equivalents, and Datasheet

The CA3140E operational amplifier, featuring a unique combination of high-voltage PMOS and bipolar transistors within a single monolithic structure, sets a new standard in the amplifier category. This innovative integration not only boosts performance but also enhances adaptability across various electronic applications. This article offers an in-depth exploration of the CA3140E’s design, capabilities, and broad range of applications, providing valuable insights into its advantages and versatile integration into diverse electronic projects.

Catalog

What is the CA3140E?

The CA3140E operational amplifier thrives in demanding environments, integrating PMOS and bipolar technologies in innovative ways. This harmonious blend enhances input impedance, minimizes input current, and supports high-speed operation. Operating across a supply voltage range of 4 to 36 volts, the amplifier is well-suited for single or dual power supplies, showcasing its adaptability. The PMOS transistors in the input stage allow an impressive input voltage range, extending 0.5V below the negative rail, which proves beneficial in single-supply scenarios. The bipolar transistors strengthen the output stage, ensuring robust short-circuit protection.

CA3140 Equivalents

• UA741

• LM4871

• AD620

• IC6283

• JRC45558

• TL081

• LF351N

• MC33171N

CA3140E Pin Configuration

Pin No	Pin Name	Description
1, 5	Offset NULL	Used to set offset voltage if required
2	Inverting Input (IN-)	The Inverting pin of the Op-Amp
3	Non-Inverting Input (IN+)	The Non-Inverting Pin of the Op-Amp
4	V-	Connected to negative rail or ground
6	Output	Output pin of the Op-Amp
7	V+	Connected to a positive rail of supply voltage
8	STROBE	This pin can be used for phase compensation or to shut down the output stage

CA3140E Symbol, Footprint, and CAD Model

Features of the CA3140E

• MOSFET Input Stage: High input impedance, low input current.

• High Input Impedance: ~1.5 teraohms, ideal for high-impedance sources.

• Low Input Current: ~10 picoamperes, minimizes source loading.

• Wide Input Range: Handles voltages 0.5V below the negative rail.

• Output Matches Input Range: Reduces risk of signal clipping.

• 741 Op-Amp Replacement: Direct swap, improved performance, no redesign needed.

CA3140E Technical Specifications

Type	Parameter
Contact Plating	Lead, Tin
Package / Case	DIP
Published	1988
Pbfree Code	no
Terminal Finish	Tin/Lead (Sn/Pb)
Min Operating Temperature	-55°C
Peak Reflow Temperature (Cel)	NOT SPECIFIED
Supply Voltage	15V
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Qualification Status	Not Qualified
Temperature Grade	MILITARY
Min Supply Voltage	4V
Supply Current-Max	6mA
Mount	Through Hole
Number of Pins	8
JESD-609 Code	e0
ECCN Code	EAR99
Max Operating Temperature	125°C
Terminal Position	DUAL
Number of Functions	1
Terminal Pitch	2.54mm
Pin Count	8
Operating Supply Voltage	9V
Max Supply Voltage	36V
Operating Supply Current	4mA
Slew Rate	9 V/µs
Architecture	VOLTAGE-FEEDBACK
Common Mode Rejection Ratio	90 dB
Output Current per Channel	40mA
Gain Bandwidth Product	3.7MHz
Unity Gain BW-Nom	4500 kHz
Low-Offset	NO
Max Dual Supply Voltage	18V
Min Dual Supply Voltage	2V
Dual Supply Voltage	9V
Height	4.95mm
Width	7.11mm
RoHS Status	RoHS Compliant
Amplifier Type	OPERATIONAL AMPLIFIER
Current - Input Bias	10pA
Input Offset Voltage (Vos)	5mV
Neg Supply Voltage-Nom (Vsup)	-15V
Voltage Gain	100dB
Frequency Compensation	YES
Low-Bias	YES
Bias Current-Max (IIB) @25C	0.00005µA
Number of Amplifiers	1
Length	10.16mm
REACH SVHC	No SVHC

Alternatives Components for CA3140E

Part Number

Manufacturer

Package / Case

Number of Pins

Slew Rate

Gain Bandwidth Product

Input Offset Voltage (Vos)

Common Mode Rejection Ratio

Supply Voltage

Min Supply Voltage

Min Dual Supply Voltage

Max Supply Voltage

Max Dual Supply Voltage

LM741CN

Texas Instruments

8-DIP (0.300, 7.62mm)

8

0.5 V/μs

1.5 MHz

6 mV

70 dB

15 V

-

-

-

-

CA3140AE

Intersil (Renesas Electronics America)

DIP

8

9 V/μs

4.5 MHz

2 mV

90 dB

15 V

4 V

2 V

36 V

18 V

LM10CN/NOPB

Texas Instruments

8-DIP (0.300, 7.62mm)

8

0.2 V/μs

90 kHz

4 mV

90 dB

20 V

-

-

-

-

LT1007CN8

Linear Technology/Analog Devices

8-DIP (0.300, 7.62mm)

8

2.5 V/μs

8 MHz

10 μV

110 dB

-

4 V

2 V

44 V

22 V

CA3140EZ

Renesas Electronics Corporation

DIP

8

9 V/μs

4.5 MHz

5 mV

90 dB

15 V

4 V

2 V

36 V

18 V

Functional Block Diagram of the CA3140E

Schematic Diagram of the CA3140E

Using the CA3140 IC

The CA3140 is a single operational amplifier (Op Amp), while the CA3240 includes two Op Amps in one package, making it more compact and cost-effective for designs needing multiple amplifiers. The CA3140 has two Offset Null pins (pin 1 and pin 5) that allow for correction of offset error. Offset error happens when there's a slight voltage difference between the inverting and non-inverting inputs, which can cause the output to drift from zero even with no input signal. By adjusting these offset pins, you can cancel out this error and improve accuracy. A test circuit in the CA3140 datasheet demonstrates this adjustment in action.

Applications of the CA3140E

The CA3140E Op Amp is versatile and widely used in various applications, including:

• Single-Supply Amplifiers: Useful in cars and portable devices, operating with just one power source.

• Sample and Hold Circuits: Capture and maintain voltage levels for accurate measurement.

• Timers and Multivibrators: Create time delays or pulses from microseconds to hours.

• Photocurrent Measurement: Measure small currents from light-sensitive devices like photodiodes.

• Peak Detectors: Capture the highest voltage in a signal waveform.

• Active Filters: Filter out specific frequencies in audio and communication systems.

• Comparators: Compare two voltages, useful in threshold detection.

• 5V TTL Interfaces: Compatible with low-voltage logic systems.

• Function Generators: Produce waveforms for testing and simulations.

• Tone Controls: Adjust frequency balance in audio equipment.

• Power Supplies: Regulate voltage levels for stable output.

• Portable Instruments: Ideal for battery-powered measurement tools.

• Intrusion Alarms: Detect changes in voltage or current for security alerts.

• Automotive Systems: Used in sensors, control modules, and infotainment.

• Power Management: Regulate power usage and protect against surges.

• Sensing and Instrumentation: Measure physical variables like temperature and pressure.

Package Dimension for CA3140E

CA3140E Manufacturer Information

Renesas Electronics and Intersil Corporation have joined forces to create the CA3140E, employing their deep understanding of microcontroller units and precision analog technologies. This union enriches their offerings, in industries requiring superior performance and power efficiency. This initiative represents a strategic fusion of their strengths, aiming to produce exemplary technological solutions. Through melding their individual technological expertise, Renesas and Intersil have advanced the capabilities of the CA3140E. This inventive component plays a role in the evolution of power management solutions. Its improved performance caters to the increasing call for energy-efficient devices, reflecting the role of strategic collaborations in driving progressive technological achievements.

Datasheet PDF

CA3140E Datasheets:

CA3140(A).pdf

Label Change-All Devices 01/Dec/2022.pdf

CA3140AE Datasheets:

CA3140(A).pdf

Label Change-All Devices 01/Dec/2022.pdf

LT1007CN8 Datasheets:

LT1007, LT1037 Datasheet.pdf

Mult Dev 11/Oct/2022.pdf

Multiple Parts 06/Aug/2022.pdf

Mult Dev EOL 20/Jun/2021.pdf

CA3140EZ Datasheets:

Label Change-All Devices 01/Dec/2022.pdf