OPA350UA/2K5


38MHz rail-to-rail CMOS op-amp, 22V/us slew rate, 5nV/sqrt(Hz) noise, single-supply 2.7V-5.5V, SOIC-8

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Manufacturer Part:

OPA350UA/2K5

Package:

8-SOIC (3.9 x 4.9 mm)

Brand:
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Description

Product Overview

The OPA350UA/2K5 from Texas Instruments is a high-speed, single-supply, rail-to-rail CMOS operational amplifier in the MicroAmplifier series. With a 38MHz gain-bandwidth product, 22V/us slew rate, and low noise of 5nV/sqrt(Hz), it is optimized for driving ADCs and signal conditioning in low-voltage systems.

Key Specifications

Manufacturer Texas Instruments
Amplifier Type General Purpose, Rail-to-Rail
Number of Channels 1
Gain-Bandwidth Product 38 MHz
Slew Rate 22 V/us
Input Offset Voltage 150uV (typ)
Input Bias Current 0.5pA (typ)
Supply Voltage 2.7V ~ 5.5V
Supply Current 5.2mA (typ)
Package 8-SOIC (3.9 x 4.9mm)
Operating Temperature -40°C ~ 85°C

Features

  • Rail-to-rail input and output
  • High bandwidth: 38MHz GBW
  • High slew rate: 22V/us
  • Low noise: 5nV/sqrt(Hz) at 100kHz
  • Low THD+N: 0.0006%
  • Ultra-low input bias current: 0.5pA
  • Unity-gain stable
  • Output swings within 10mV of rails (10k load)

Applications

  • ADC input drivers
  • Portable and battery-powered instruments
  • Audio signal processing
  • Video processing (75-ohm drive capability)
  • Cell phone PA control loops
  • Medical instrumentation

The Texas Instruments OPA350UA/2K5 is a high-speed, rail-to-rail CMOS operational amplifier optimized for low-voltage single-supply operation. Part of the MicroAmplifier series, it delivers a 38MHz gain-bandwidth product and 22V/us slew rate while consuming only 5.2mA per amplifier. The rail-to-rail input and output capability allows the amplifier to operate with signals that extend to the power supply rails, making it ideal for driving analog-to-digital converters. The very low input bias current of 0.5pA and low noise of 5nV/sqrt(Hz) ensure precision in high-impedance sensor applications. The device is unity-gain stable and available in tape and reel packaging for automated assembly.

The OPA350 operates as a voltage-feedback operational amplifier with three key subsystems: 1) Input Stage: A CMOS differential input pair provides rail-to-rail common-mode voltage range, from 0.1V below the negative rail to 0.1V above the positive rail, with ultra-low bias current of 0.5pA. 2) Gain Stage: The high-gain voltage amplifier stage achieves 122dB open-loop gain (RL=10k), providing excellent DC precision with only 150uV input offset voltage. 3) Output Stage: A rail-to-rail CMOS output stage swings within 10mV of the supply rails with a 10k load and can drive up to 40mA, making it suitable for driving low-impedance loads including 75-ohm video lines.

Pin Name Type Function
1 NC No connection (or offset trim on some variants)
2 IN- Input Inverting input
3 IN+ Input Non-inverting input
4 V- Power Negative supply (or GND in single-supply)
5 NC No connection
6 OUT Output Amplifier output
7 V+ Power Positive supply (2.7V to 5.5V)
8 NC No connection
  • High-impedance sensor signal conditioning and ADC driver circuits
  • Portable and battery-powered medical instrumentation
  • Audio signal processing with 0.0006% THD+N
  • Video signal processing with 75-ohm drive capability
  • Cell phone power amplifier control loops
Manufacturer Part Number Package Notes
TI OPA2350UA 8-SOIC Dual channel version
TI OPA4350EA 14-SSOP Quad channel version
TI OPA350NA MSOP-8 Single, MSOP package
Microchip MCP6022-I/SN 8-SOIC 10MHz, RRIO, dual
ADI AD8605ARTZ SOT-23-5 10MHz, RRIO, single
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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.