INA333-Q1 Automotive low-power, zero-drift, precision instrumentation amplifier | TI.com

INA333-Q1
This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.
Automotive low-power, zero-drift, precision instrumentation amplifier

 

Sample Availability

Prototype samples are available (PINA333QDGKRQ1). Request now

Description

The INA333-Q1 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile three-operational-amplifier design, small size, and low power make this device an excellent choice for a wide range of automotive applications that use resistive bridge sensors.

A single external resistor sets any gain from 1 to 1000. The INA333-Q1 is designed to use an industry-standard gain equation: G = 1 + (100 kΩ / RG).

The INA333-Q1 provides very low offset voltage (25 µV, G ≥ 100), excellent offset voltage drift
(0.1 µV/°C, G ≥ 100), and high common-mode rejection (100 dB at G ≥ 10). The device operates with power supplies as low as 1.8 V (±0.9 V) and quiescent current is only 50 µA, making this device an excellent choice for battery-operated systems. Autocalibration techniques maintain excellent precision over the industrial temperature range. The INA333-Q1 also offers exceptionally low noise density (50 nV/√Hz) that extends down to dc.

The INA333-Q1 device is available in an 8-pin VSSOP package and is specified over the TA = –40°C to +125°C temperature range.

 

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C ≤ TA ≤ +125°C
  • Low offset voltage: 25 µV (maximum), G ≥ 100
  • Low drift: 0.1 µV/°C, G ≥ 100
  • Low noise: 50 nV/√Hz, G ≥ 100
  • High CMRR: 100 dB (minimum), G ≥ 10
  • Low input bias current: 200 pA (maximum)
  • 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+) – 0.05 V
  • Low quiescent current: 50 µA
  • Operating temperature: –40°C to +125°C
  • RFI filtered inputs
  • Package: 8-Pin VSSOP

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Parametrics

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Part number Order Vs (Min) (V) Vs (Max) (V) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Max) (uV/C) Input bias current (+/-) (Max) (nA) Noise at 1 kHz (Typ) (nV/rt (Hz)) Iq (Typ) (mA) Bandwidth at min gain (Typ) (MHz) Gain (Min) (V/V) Gain (Max) (V/V) Gain error (+/-) (Max) (%) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Noise at 0.1 Hz-10 Hz (Typ) (uVpp) Gain non-linearity (+/-) (Max) (%)
INA333-Q1 Order now 1.8     5.5     25     0.5     0.2     55     50     0.35     1     1000     0.1     -40 to 125     VSSOP | 8     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     1     0.01