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CA3140EZ

4.5MHz BiMOS Op-Amp, MOSFET input, 4-36V supply, 10pA Ib, PDIP-8

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Manufacturer Part：

CA3140EZ

Package：

PDIP-8 (9.7 x 6.6 x 3.94 mm)

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Description

Product Overview

The CA3140EZ is a 4.5MHz BiMOS operational amplifier manufactured by Renesas Electronics (formerly Intersil). It combines high-voltage PMOS transistors with high-voltage bipolar transistors on a single monolithic chip, providing extremely high input impedance, very low input current, and high-speed performance. The device is pin-compatible with the industry-standard 741 op-amp and operates over a wide supply range of 4V to 36V single supply.

Key Specifications

Supply Voltage Range 4V to 36V single, +/-2V to +/-18V dual
Gain Bandwidth Product 4.5MHz
Slew Rate 9V/us
Input Offset Voltage 5mV max
Input Bias Current 10pA typical
Input Impedance 1.5Tohm typical
Output Current 40mA
CMRR 90dB typical
Operating Temperature -55C to +125C
Package PDIP-8

Features

  • MOSFET input stage with 1.5Tohm input impedance
  • Extremely low input bias current (10pA typical)
  • Wide common-mode input voltage range
  • Single or dual supply operation
  • Directly replaces 741 in most applications
  • Strobe capability for output gating
  • Broad operating temperature range (-55C to +125C)

Applications

  • Ground-referenced single-supply amplifiers
  • Sample-and-hold amplifiers
  • Photocurrent instrumentation
  • Active filters and comparators
  • Medical monitoring equipment
  • Peak detectors and function generators

The CA3140EZ is a BiMOS operational amplifier from Renesas Electronics that integrates PMOS and bipolar transistors on a single chip. The MOSFET input stage provides extremely high input impedance (1.5Tohm typical) and ultra-low input bias current (10pA), making it ideal for high-impedance signal sources. With a 4.5MHz gain-bandwidth product and 9V/us slew rate, it offers excellent speed performance. The device is pin-compatible with the classic 741 op-amp and can directly replace it in most applications.

The CA3140EZ employs a BiMOS architecture combining PMOS input transistors with bipolar output stage. The PMOS differential input pair provides extremely high input impedance and near-zero input bias current. The bipolar output stage delivers 40mA output current with rail-to-rail input capability on the negative side. An internal 12pF compensation capacitor provides unity-gain stability. The strobe pin allows output gating by pulling the output to the negative rail. The device features offset null adjustment through pins 1 and 5.

Pin Name Type Function
1 OA1 Offset Offset adjust 1
2 IN- Input Inverting input
3 IN+ Input Non-inverting input
4 V- Power Negative supply / ground
5 OA2 Offset Offset adjust 2
6 OUT Output Amplifier output
7 V+ Power Positive supply (4-36V)
8 STROBE Control Strobe (output gating)
  • Single-supply automotive and portable instrumentation
  • Sample-and-hold and peak detector circuits
  • Photodiode and piezoelectric sensor amplifiers
  • Long-duration timers and multivibrators
  • 5V TTL system interface circuits
Manufacturer Part Number Package Notes
Renesas CA3140E PDIP-8 Commercial temp range version
Renesas CA3140AMZ96 SOIC-8 SMD version
Texas Instruments TL082CP PDIP-8 JFET input dual op-amp
onsemi MC34071P PDIP-8 Single supply op-amp alternative
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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