A signal acquisition IC for 3-input resistive bridge sensors has been realized in 0.18um CMOS. It features a low noise programmable amplifier which achieved 1.8μVrms input referred noise and 120dB CMRR, a SAR ADC with 11.2 bits ENOB, an embedded temperature sensor and configurable oscillator. The active area of the chip is 0.3mm² which consumes 60μW and 18μW at 1.8V supply with output data rate (ODR) of 400Hz and 100Hz respectively.