The AD7792BRUZ is a 3-channel, low noise, low power, 16-bit Σ-Δ Analogue-to-digital Converter with on-chip in-amp and reference. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the Analogue-to-digital Converter. With a gain setting of 64, the rms noise is 40nV when the update rate equals 4.17Hz. The devices contain a precision low noise, low drift internal band gap reference and can accept an external differential reference. Other on-chip features include programmable excitation current sources, burnout currents and a bias voltage generator. The bias voltage generator sets the common-mode voltage of a channel to AVDD/2.
400µA Typical current
1µA Maximum power-down
Band gap reference with 4ppm/°C drift typical
3 Differential inputs
Programmable current sources
On-chip bias voltage generator
Independent interface power supply
Low noise programmable gain instrumentation amp
Product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD.