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AD7608 Datasheet(PDF) 1 Page - Analog Devices |
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AD7608 Datasheet(HTML) 1 Page - Analog Devices |
1 / 32 page 8-Channel DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC Data Sheet AD7608 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011-2012 Analog Devices, Inc. All rights reserved. FEATURES 8 simultaneously sampled inputs True bipolar analog input ranges: ±10 V, ±5 V Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE Fully integrated data acquisition solution Analog input clamp protection Input buffer with 1 MΩ analog input impedance Second-order antialiasing analog filter On-chip accurate reference and reference buffer 18-bit ADC with 200 kSPS on all channels Oversampling capability with digital filter Flexible parallel/serial interface SPI/QSPI™/MICROWIRE™/DSP compatible Pin compatible solutions from 14-bits to 18-bits Performance 7 kV ESD rating on analog input channels 98 dB SNR, −107 dB THD Low power: 100 mW Standby mode: 25 mW 64-lead LQFP package APPLICATIONS Power line monitoring and protection systems Multiphase motor controls Instrumentation and control systems Multiaxis positioning systems Data acquisition systems (DAS) COMPANION PRODUCTS External References: ADR421, ADR431 Digital Isolators: ADuM1402, ADuM5000, ADuM5402 Voltage Regulator Design Tool: ADIsimPower, Supervisor Parametric Search Complete list of complements on AD7608 product page Table 1. High Resolution, Bipolar Input, Simultaneous Sampling DAS Solutions Resolution Single- Ended Inputs True Differential Inputs Number of Simultaneous Sampling Channels 18 Bits AD76081 AD7609 8 16 Bits AD7606 8 AD7606-6 6 AD7606-4 4 14 Bits AD7607 8 FUNCTIONAL BLOCK DIAGRAM V1 V1GND RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB RFB 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V2 V2GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V3 V3GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V4 V4GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V5 V5GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V6 V6GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V7 V7GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H V8 V8GND 1MΩ 1MΩ CLAMP CLAMP SECOND ORDER LPF T/H 8:1 MUX AGND BUSY FRSTDATA CONVST A CONVST B RESET RANGE CONTROL INPUTS CLK OSC REFIN/REFOUT REF SELECT AGND OS 2 OS 1 OS 0 DOUTA DOUTB RD/SCLK CS PAR/SER SEL VDRIVE 18-BIT SAR DIGITAL FILTER PARALLEL/ SERIAL INTERFACE 2.5V REF REFCAPB REFCAPA SERIAL PARALLEL REGCAP 2.5V LDO REGCAP 2.5V LDO AVCC AVCC DB[15:0] AD7608 Figure 1. 1 Patent pending. |
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