Parts INA333QDGKRQ1

TIINA333QDGKRQ1

Name: INA333QDGKRQ1
Brand: Texas Instruments

Texas Instruments

Instrumentation Amplifier 1 Circuit 8-VSSOP

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Overview

The INA333QDGKRQ1 is an AEC-Q100 qualified, zero-drift instrumentation amplifier designed for high-precision signal conditioning in automotive environments. It operates on a low supply voltage range of 1.8V to 5.5V while consuming only 50uA of quiescent current, making it ideal for battery-powered or current-limited sensing applications.

Why Choose This Part

This amplifier offers an exceptionally low input offset voltage of 10uV and high CMRR to maintain signal integrity in noisy environments. Its zero-drift architecture ensures stability over temperature, while the integrated RFI filters protect against high-frequency interference common in vehicle electronics.

Applications

Bridge Sensors

Precisely amplifies low-level signals from Wheatstone bridge sensors used in pressure, force, and weight measurement.

Automotive ECU Sensing

Monitors small differential voltages in harsh automotive environments where AEC-Q100 qualification and high CMRR are required.

Current Shunt Monitoring

Measures current flow across low-side shunt resistors with high accuracy and minimal offset drift.

Medical Instrumentation

Provides high-impedance, low-noise amplification for portable diagnostic equipment and biometric sensors.

Key Specifications

Slew Rate 0.16V/us

Mounting Type Surface Mount

-3db Bandwidth 150 kHz

Amplifier Type Instrumentation

Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Current - Supply 50uA

Number of Circuits 1

Current - Input Bias 70 pA

Operating Temperature -40degC ~ 125degC (TA)

Voltage - Input Offset 10 uV

Supplier Device Package 8-VSSOP

Current - Output / Channel 40 mA

Voltage - Supply Span (Max) 5.5 V

Voltage - Supply Span (Min) 1.8 V

Getting Started

Gain is set by a single external resistor connected between the RG pins, allowing for flexible scaling of input signals. When prototyping, ensure that the input common-mode voltage remains within the specified range of 0.1V to 5.4V to maintain linear operation near the supply rails.

Also Consider

AD8226 Analog Devices - Provides a wider bandwidth of 1.5 MHz for applications requiring faster signal response.

INA333AIDGKR TITexas Instruments - The standard industrial grade version for non-automotive applications requiring identical precision specs at a lower cost.