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AD7861 Datasheet 11-Bit Resolution Simultaneous Sampling A/D Converter

Manufacturer: Analog Devices

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General Description

VIN1 VIN2 VIN3 SHA 11-BIT ADC AUX0 AUX1 AUX2 AUX3 S0 S1 4-1 MUX AD7861 CONVST RESET M0 M1 The AD7861 is a multichannel simultaneous sampling A/D Converter (ADC) configured for the acquisition of voltage inputs in a motor control solution or three-phase power system.

The AD7861 combined with Analog Devices’ 16-bit fixedpoint digital signal processor (DSP) provides a low cost 16-bit fixed-point microcontroller solution.

The input stage has been designed to accommodate the types of signals frequently found in motor drives.

Overview

a 11-Bit Resolution Simultaneous Sampling A/D Converter AD7861 FUNCTIONAL BLOCK DIAGRAM REF IN REF OUT 2.

Key Features

  • 11-Bit Resolution Analog-to-Digital Converter Seven Single-Ended Analog Inputs Four Input Channels Simultaneously Sampled Expansion with 4 Multiplexed Inputs Internal 2.5 V Reference 3.2 ␮s Conversion Time per Channel User Definable Channel Sequencing Single Supply +5 V Operation Double Buffered Register Outputs 6.25 MHz to 12.5 MHz Operating Clock Range.

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