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OPA4277UA/2K5

Quad precision op amp, 10µV Vos, 0.1µV/°C drift, 134dB gain, 1MHz GBW, SOIC-14

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Manufacturer Part：

OPA4277UA/2K5

Package：

SOIC-14 (8.63 x 3.85 mm)

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Description

Product Overview

The OPA4277UA/2K5 is a quad precision operational amplifier from Texas Instruments, featuring ultra-low offset voltage of 10 µV and ultra-low drift of ±0.1 µV/°C. Housed in a 14-pin SOIC package, it replaces the industry-standard OP-177 with improved noise, wider output swing, and twice the speed at half the quiescent current.

Key Specifications

Supply Voltage Range ±2 V to ±18 V (4 V to 36 V)
Offset Voltage (max) 20 µV (OPA4277UA grade)
Offset Drift ±0.1 µV/°C (typical)
Open-Loop Gain 134 dB (typical)
CMRR 140 dB (typical)
PSRR 130 dB (typical)
Input Bias Current (max) 1 nA
Gain Bandwidth Product 1 MHz
Slew Rate 0.8 V/µs
Quiescent Current per Amplifier 800 µA
Operating Temperature -40°C to +85°C
Package SOIC-14 (D)

Features

  • Ultra-low offset voltage: 10 µV (typical)
  • Ultra-low drift: ±0.1 µV/°C
  • High open-loop gain: 134 dB
  • High CMRR: 140 dB and PSRR: 130 dB
  • Low bias current: 1 nA maximum
  • Wide supply range: ±2 V to ±18 V
  • Unity-gain stable, no phase inversion
  • Dual and quad versions with independent circuitry

Applications

  • Analog input modules
  • Weigh scales and load cells
  • Temperature and pressure transmitters
  • Data acquisition (DAQ) systems
  • Laboratory and field instrumentation
  • Battery test equipment

The OPA4277 is a quad precision operational amplifier from Texas Instruments that replaces the industry-standard OP-177. It offers improved noise performance, wider output voltage swing, and is twice as fast with half the quiescent current. The device features ultra-low offset voltage (10 µV typical), ultra-low drift (±0.1 µV/°C), low bias current (1 nA max), high CMRR (140 dB), and high PSRR (130 dB). The OPA4277 operates from ±2 V to ±18 V supplies with excellent performance maintained across the full supply range. The quad version features completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

The OPA4277 uses a precision bipolar input stage with laser-trimmed thin-film resistors to achieve ultra-low offset voltage and drift. The input stage provides high CMRR (140 dB) through balanced differential pair architecture with active load. The gain stage delivers 134 dB open-loop gain through a high-impedance node with active current mirror load. The output stage is a class-AB push-pull configuration that swings within 1 V of the supply rails without phase inversion. Internal compensation ensures unity-gain stability while maintaining 1 MHz GBW and 0.8 V/µs slew rate. The quad version uses four completely independent amplifier channels sharing only supply connections to minimize crosstalk.

Pin Name Type Description
1 Out A Output Channel A output
2 -In A Input Channel A inverting input
3 +In A Input Channel A non-inverting input
4 V+ Power Positive supply
5 +In B Input Channel B non-inverting input
6 -In B Input Channel B inverting input
7 Out B Output Channel B output
8 Out C Output Channel C output
9 -In C Input Channel C inverting input
10 +In C Input Channel C non-inverting input
11 V- Power Negative supply
12 +In D Input Channel D non-inverting input
13 -In D Input Channel D inverting input
14 Out D Output Channel D output
  • Precision Instrumentation: Analog input modules for industrial measurement requiring ultra-low offset and drift
  • Weigh Scales: Load cell signal conditioning with 134 dB open-loop gain for microvolt-level resolution
  • Temperature Transmitters: RTD and thermocouple front-end amplification with 0.1 µV/°C drift stability
  • Data Acquisition: Multi-channel DAQ systems leveraging four independent precision amplifiers
  • Laboratory Equipment: High-accuracy test and measurement instruments replacing OP-07/OP-177
Model Manufacturer Key Difference Package Specs
OPA4277PA TI PDIP-14 package version – –
OPA4227UA TI Higher speed, lower noise version – –
OP2206UA TI ±40V overvoltage protected version – –
AD704BRZ ADI Quad precision, 16V supply, low Ib – –
MCP6H04-E/SN Microchip Quad precision, rail-to-rail – –
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Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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