The PGA112AIDGST is a zero-drift Programmable Gain Amplifier with MUX function. This device (binary and scope gains) offers two analog inputs, a three-pin SPI interface and software shutdown. It provides internal calibration channels for system-level calibration. The channels are tied to GND, 0.9 VCAL, 0.1 VCAL and VREF, respectively. VCAL, an external voltage connected to Channel 0, is used as the system calibration reference.
Rail-to-rail input and output
Four internal calibration channels
Amplifier optimized for driving CDAC ADCs
SPI? interface (10MHz) with daisy-chain capability
50mV to supply rails Output swing
12nV/√Hz Low noise
±5nA (25°C) Maximum input offset current
200ns Gain switching time
<=4μA (typical) (IQ) Software and hardware shutdown
(EN)
