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INA333-HT
  • INA333-HT
  • INA333-HT
  • INA333-HT

INA333-HT

ACTIVE

High Temperature Low Power, Precision Instrumentation Amplifier

Texas Instruments INA333-HT Product Info

1 April 2026 3

Parameters

Number of channels

1

Vs (max) (V)

5.5

Vs (min) (V)

1.8

Input offset (±) (max) (µV)

25

Voltage gain (min) (V/V)

1

Voltage gain (max) (V/V)

1000

Noise at 1 kHz (typ) (nV√Hz)

50

Features

Low power, Zero Drift

CMRR (min) (dB)

80

Input offset drift (±) (max) (µV/°C)

0.1

Input bias current (±) (max) (nA)

0.2

Iq (typ) (mA)

0.198

Bandwidth at min gain (typ) (MHz)

0.15

Gain error (±) (max) (%)

0.5

Operating temperature range (°C)

-55 to 210

Rating

High Temp

Type

Resistor

Gain nonlinearity (±) (max) (%)

0.001

Output swing headroom (to negative supply) (typ) (V)

0.05

Output swing headroom (to positive supply) (typ) (V)

-0.05

Input common mode headroom (to negative supply) (typ) (V)

0.1

Input common mode headroom (to positive supply) (typ) (V)

-0.1

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

2

Package

B0QFN (JD)-8-75.8373 mm² 10.29 x 7.37

Features

  • Low Offset Voltage: 25 μV (max at 25°C), G ≥ 100
  • Low Drift: 0.2 µV/°C, G ≥ 1000
  • Low Noise: 55 nV/√Hz, G ≥ 100
  • High CMRR: 100 dB (min at 25°C), G ≥ 10
  • Supply Range: +1.8 V to +5.5 V
  • Input Voltage: (V–) +0.1 V to (V+) –0.1 V
  • Output Range: (V–) +0.05 V to (V+) –0.05V
  • Low Quiescent Current: 198 µA
  • RFI Filtered Inputs
  • Low Offset Voltage: 25 μV (max at 25°C), G ≥ 100
  • Low Drift: 0.2 µV/°C, G ≥ 1000
  • Low Noise: 55 nV/√Hz, G ≥ 100
  • High CMRR: 100 dB (min at 25°C), G ≥ 10
  • Supply Range: +1.8 V to +5.5 V
  • Input Voltage: (V–) +0.1 V to (V+) –0.1 V
  • Output Range: (V–) +0.05 V to (V+) –0.05V
  • Low Quiescent Current: 198 µA
  • RFI Filtered Inputs

Description

The INA333 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications.

A single external resistor sets any gain from 1 to 1000. The INA333 is designed to use an industry-standard gain equation: G = 1 + (100kΩ/RG).

The INA333 provides very low offset voltage (25 µV at 25°C, G ≥ 100), excellent offset voltage drift (0.2 µV/°C, G ≥ 100), and high common-mode rejection (100 dB at 25°C, G ≥ 10). It operates with power supplies as low as 1.8 V (±0.9V), and quiescent current is only 50 µA—ideal for battery-operated systems. Using autocalibration techniques to ensure excellent precision over the extended industrial temperature range, the INA333 also offers exceptionally low noise density (55 nV/√Hz) that extends down to dc.

The INA333 is is specified over the TA = –55°C to +210°C temperature range.

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