Precision bridge amp — no trim pot, no fuss
The Texas Instruments INA333AIDGKT is a single-supply instrumentation amplifier built for precision sensor conditioning — bridge outputs, thermocouples, strain gauges, and medical front-ends.
The 150 kHz -3dB bandwidth and 0.16 V/µs slew rate limit noise bandwidth and prevent output ringing into the ADC input.
Supply range and temperature — fits the 3.3 V rail and the engine bay
The supply span runs from 1.8 V up to 5.5 V, so it runs directly off a single Li-ion cell, a 3.3 V logic rail, or a 5 V industrial bus without a secondary regulator.
Package and footprint — 8-VSSOP, field-swappable with care
Housed in an 8-VSSOP (3.00 mm × 3.00 mm body, 0.65 mm pitch), the INA333AIDGKT fits on a two-layer board with a hand-solderable footprint. The 70 pA input bias current means you do not need guard rings around the inputs unless the source impedance exceeds 100 kΩ — a practical detail for field repairs where the board is already populated.