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AD7780 Datasheet Ultralow Power Sigma-Delta ADC

Manufacturer: Analog Devices

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General Description

The AD7780 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, 24-bit sigmadelta (Σ-Δ) ADC;

an on-chip, low noise programmable gain amplifier (PGA);

Overview

www.DataSheet4U.com 24-Bit, Pin-Programmable, Ultralow Power Sigma-Delta ADC AD7780 FUNCTIONAL BLOCK DIAGRAM GND AVDD GAIN REFIN(+) REFIN(–) AIN(+) G=1 OR 128 AIN(–) BPDSW INTERNAL CLOCK 24-BIT Σ-Δ ADC SCLK.

Key Features

  • 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.

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