AD7781 Datasheet Low Power Sigma-Delta ADC

Manufacturer: Analog Devices

Datasheet Details

The AD7781 is a complete, low power front-end solution for bridge sensor products, including weigh scales, strain gages, and pressure sensors.

It contains a precision, low power, 20-bit sigma-delta (Σ-Δ) ADC, an on-chip, low noise programmable gain amplifier (PGA), and an on-chip oscillator.

Consuming only 330 μA, the AD7781 is particularly suitable for portable or battery-operated products where very low power is required.

20-Bit, Pin-Programmable, Low Power Sigma-Delta ADC AD7781.

Pin-programmable filter response Update rate: 10 Hz or 16.7 Hz Pin-programmable in-amp gain Pin-programmable power-down and reset Status function Internal clock oscillator Internal bridge power-down switch Current 115 μA typical (gain = 1) 330 μA typical (gain = 128) Simultaneous 50 Hz/60 Hz rejection Power supply: 2.7 V to 5.25 V.
40°C to +105°C temperature range Independent interface power supply Packages 14-lead, narrow body SOIC 16-lead TSSOP 2-wire serial interface (read-only device.

Part Number	Description
AD7780	Ultralow Power Sigma-Delta ADC
AD7782	Read Only/ Pin Configured 24-Bit ADC
AD7783	Pin Configured 24-Bit ADC
AD7785	20-Bit ADC
AD7787	2-Channel 24-Bit Sigma-Delta ADC
AD7788	Sigma-Delta ADCs
AD7789	Sigma-Delta ADCs
AD7701	16-Bit A/D Converter
AD7703	20-Bit A/D Converter
AD7705	Sigma-Delta ADCs