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.
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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) (%)|
||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|