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LM7322MM/NOPB

Dual RRIO op-amp, 20MHz, 18V/μs, ±100mA out, 2.5-32V, unlimited Cload, VSSOP-8

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Manufacturer Part：

LM7322MM/NOPB

Package：

VSSOP-8 / DGK (3.0 x 3.0 x 0.97mm)

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Description

Product Overview

The LM7322MM/NOPB from Texas Instruments is a dual high-output-current rail-to-rail input/output operational amplifier in a VSSOP-8 package. It delivers 20MHz GBW, 18V/μs slew rate, and ±65mA/100mA output current from only 1.1mA per channel, operating over a wide 2.5V to 32V supply range with unlimited capacitive load drive capability.

Key Specifications

Number of Channels 2 (Dual)
Gain Bandwidth Product 20MHz
Slew Rate 18V/μs
Supply Voltage Range 2.5V to 32V (or ±1.25V to ±16V)
Supply Current per Channel 1.1mA typ. / 1.4mA max
Input Offset Voltage 700μV typ. / 5mV max
Input Bias Current 1.1μA typ.
Output Current +65mA / -100mA (source/sink)
CMRR 65dB typ. (over extended CM range)
PSRR 78dB typ.
Voltage Noise (1kHz) 15nV/√Hz typ.
Input CM Range Extends 0.3V beyond both rails
Capacitive Load Drive Unlimited (no oscillation)
THD+N -86dB typ.
Package VSSOP-8 (3 x 3mm)
Operating Temperature -40°C to +125°C

Features

  • 20MHz GBW and 18V/μs slew rate at only 1.1mA per channel
  • Wide supply voltage range: 2.5V to 32V or ±1.25V to ±16V
  • High output current: +65mA source, -100mA sink
  • Rail-to-rail input and output (output swings within 300mV of rails at 15mA)
  • Input common-mode extends 0.3V beyond both supply rails
  • Unlimited capacitive load drive without oscillation
  • Low noise: 15nV/√Hz, 1.35pA/√Hz
  • Insensitivity of parameters to supply voltage variation
  • PowerWise efficient architecture

Applications

  • Audio line drivers and headphone amplifiers
  • Coaxial cable and twisted-pair drivers
  • High-side and low-side current sensing
  • Industrial signal conditioning
  • Automotive sensor interfaces

The LM7322MM/NOPB from Texas Instruments is a dual high-output-current rail-to-rail input/output operational amplifier in a VSSOP-8 package. Part of the PowerWise family, it achieves 20MHz GBW and 18V/μs slew rate while consuming only 1.1mA per channel. The output can source 65mA and sink 100mA, making it suitable for driving heavy loads including coaxial cables. The input common-mode range extends 0.3V beyond both rails, enabling high-side and low-side sensing. A unique feature is unlimited capacitive load drive without oscillation, eliminating stability concerns with long PCB traces or cable loads. The device operates from 2.5V to 32V single supply or ±1.25V to ±16V dual supplies.

The LM7322 uses a complementary bipolar input stage that extends the common-mode range 0.3V beyond both supply rails, enabling both high-side and low-side current sensing. The rail-to-rail output stage uses a class AB push-pull architecture capable of sourcing 65mA and sinking 100mA while swinging within 300mV of the rails at 15mA load. The output stage is designed with sufficient phase margin and bandwidth to drive unlimited capacitive loads without oscillation, a feature achieved through internal compensation that adapts to the load. The device maintains consistent performance parameters across the wide supply range, making it easy to use in systems with varying supply voltages such as automotive battery rails.

Pin Name Type Function
1 OUT A Output Amplifier A output
2 IN- A Input Amplifier A inverting input
3 IN+ A Input Amplifier A non-inverting input
4 V- Power Negative supply / Ground
5 IN+ B Input Amplifier B non-inverting input
6 IN- B Input Amplifier B inverting input
7 OUT B Output Amplifier B output
8 V+ Power Positive supply (2.5V to 32V)
  • Audio line driver and headphone amplifier with high output current
  • Coaxial cable and twisted-pair transmission line driver
  • High-side current sensing with extended CM range beyond rail
  • Industrial PLC analog output driver with unlimited capacitive load
  • Automotive sensor signal conditioning from 12V battery supply
Manufacturer Part Number Package Notes
TI LM7322MA/NOPB SOIC-8 Same specs, SOIC-8 package
TI LM7321MF/NOPB SOT-23-5 Single version, same performance
ADI ADA4891-2ARMZ MSOP-8 250MHz dual RRIO, high output
ST TS6124IYPT DFN-8 Dual 22MHz RRIO op-amp
onsemi NCV20072DR2G SOIC-8 Automotive dual RRIO, 5MHz
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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.

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