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CA3140AMZ96

BiMOS op amp, PMOS input, 1.5Tohm, 10pA Ib, 3.5MHz, SOIC-8

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Manufacturer Part：

CA3140AMZ96

Package：

8-Pin SOIC (4.9 x 3.9 x 1.27 mm)

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Description

Product Overview

The CA3140AMZ96 is a Renesas (Intersil/Harris) BiMOS operational amplifier combining PMOS input and bipolar output on a single chip. It features 1.5T-ohm input impedance, 10pA input current, 3.5MHz GBW, 6V/us slew rate, and wide single/dual supply operation. Packaged in SOIC-8, -40C to +85C.

Key Specifications

Input Impedance 1.5 T-ohm (typical)
Input Bias Current 10 pA (typical)
GBW 3.5 MHz
Slew Rate 6 V/us
Supply Range 4V to 36V (or +/-2V to +/-18V)
VOS 5 mV (max)

Features

  • BiMOS: PMOS input, bipolar output
  • 1.5T-ohm ultra-high input impedance
  • 10pA input bias current
  • Wide common-mode range: -15V to +12V
  • 3.5MHz GBW, 6V/us slew rate
  • Output swings to negative rail
  • Direct 741 replacement in most apps

Applications

  • Sample-and-hold amplifiers
  • Photocurrent and pH measurement
  • Active filters
  • Single-supply amplifiers

The CA3140AMZ96 is a Renesas (originally Intersil/Harris) BiMOS operational amplifier that combines the advantages of high-voltage PMOS transistors with high-voltage bipolar transistors on a single monolithic chip. The gate-protected PMOS input stage provides 1.5T-ohm input impedance and 10pA input bias current, making it ideal for high-impedance sensor interfaces. The bipolar output stage delivers high current drive with output voltage swinging to the negative supply rail. The wide common-mode input range (-15V to +12V at +/-15V supply) enables single-supply applications where inputs can go below ground. With 3.5MHz GBW and 6V/us slew rate, it provides adequate speed for most general-purpose applications. The device can replace the industry-standard 741 in most applications with improved performance. Packaged in SOIC-8 rated for -40C to +85C.

The CA3140 uses a BiMOS (Bipolar-MOS) process combining PMOS and bipolar transistors. The input differential pair uses gate-protected PMOS transistors, providing extremely high input impedance (1.5T-ohm) and near-zero input bias current (10pA). The PMOS inputs allow the common-mode voltage to extend below the negative supply rail, a critical advantage in single-supply applications. The second stage and output stage use bipolar transistors for high gain and high output current drive capability. The output can swing to within millivolts of the negative supply rail (V-), enabling direct interface to TTL logic at 5V supply. The internal 12pF compensation capacitor provides frequency compensation for unity-gain stability. The offset null terminals (pins 1 and 5) allow external offset voltage trimming.

Pin Mnemonic Description
1 OA1 Offset null 1
2 IN- Inverting input
3 IN+ Non-inverting input
4 V- Negative supply
5 OA2 Offset null 2
6 OUT Output
7 V+ Positive supply
8 ST Strobe (output enable)
  • Sample-and-hold amplifiers with 10pA input current for minimal droop
  • Photocurrent and pH measurement with 1.5T-ohm input impedance
  • Active filters and integrators with wide common-mode range
  • Single-supply ground-referenced amplifiers with below-ground input capability
Model Manufacturer Key Difference
CA3140AEZ Renesas DIP-8 version
CA3140T Harris Original, DIP-8
LMC6482 TI Dual CMOS RRIO, 20fA
OPA350 TI CMOS RRIO, 38MHz
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Service & Packaging

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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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