AD7658

www.DataSheet4U.com Preliminary Technical Data FEATURES 6 Independent ADCs True Bipolar Analog Inputs Pin/Software Selectable Ranges:- ±10V, ±5V Fast throughput rate: 250 kSPS Specified for VCC of 4.5 V to 5.5 V Low power 160mW at 250 kSPS with 5 V supplies Wide input bandwidth: 85 dB SNR at 50 kHz input frequency On-chip Reference and Reference Buffers Parallel and Serial Interface High speed serial interface SPI/QSPI/µWire/DSP compatible Standby mode: 5 µA max iCMOSTM Process Technology 64 LQFP package 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC AD7658/AD7657/AD7656* FUNCTIONAL BLOCK DIAGRAM VDD CONVSTA CONVSTB CONVSTC AVCC DVCC CLK OSC REF BUF +5 CONTROL LOGIC SER/PAR VDRIVE STBY OUTPUT DRIVERS DOUTA V1 T/H 16-BIT SAR SCLK V2 T/H BUF V3 T/H 16-BIT SAR 16-BIT SAR OUTPUT DRIVERS OUTPUT DRIVERS DOUTB DOUTC V4 T/H BUF 16-BIT SAR OUTPUT DRIVERS DATA/ CONTROL LINES 4, 94 V5 T/H 16-BIT SAR V6 T/H 16-BIT SAR AD7656 APPLICATIONS Power Line Monitoring systems Instrumentation and control systems Multi-axis positioning systems VSS AGND DGND Figure 1. GENERAL DESCRIPTION The AD7658/AD7657/AD7656 contain six 12/14/16-bit, fast, low power, successive approximation ADCs all in the one package. The AD7658/AD7657/AD7656 core operates from a single 4.5 V to 5.5 V power supply and features throughput rates up to 250 kSPS. The parts contain low noise, wide bandwidth track-andhold amplifiers that can handle input frequencies up to 8 MHz. The con...