8-Channel DAS with 14-Bit, Bipolar Input, Simultaneous Sampling ADC Data Sheet AD7607 FEATURES APPLICATIONS 8 simultaneously sampled inputs Power-line monitoring and protection systems True bipolar analog input ranges: 10 V, 5 V Multiphase motor control Single 5 V analog supply and 2.3 V to 5.25 V V Instrumentation and control systems DRIVE Fully integrated data acquisition solution Multiaxis positioning systems Analog input clamp protection Data acquisition systems (DAS) Input buffer with 1 M analog input impedance Table 1. High Resolution, Bipolar Input, Simultaneous Second-order antialiasing analog filter Sampling DAS Solutions On-chip accurate reference and reference buffer 14-bit ADC with 200 kSPS on all channels Single-Ended Number of Simultaneous Resolution Inputs Sampling Channels Flexible parallel/serial interface 18 Bits AD7608 8 SPI/QSPI/MICROWIRE/DSP compatible Pin-compatible solutions from 14 bits to 18 bits 16 Bits AD7606 8 Performance AD7606-6 6 7 kV ESD rating on analog input channels AD7606-4 4 Fast throughput rate: 200 kSPS for all channels 14 Bits AD7607 8 85.5 dB SNR at 50 kSPS INL 0.25 LSB, DNL 0.25 LSB Low power: 100 mW at 200 kSPS Standby mode: 25 mW typical 64-lead LQFP package FUNCTIONAL BLOCK DIAGRAM AV AV CC CC REGCAP REGCAP REFCAPB REFCAPA 1M R FB V1 CLAMP T/H SECOND- V1GND CLAMP ORDER LPF 2.5V 2.5V R 1M FB LDO LDO 1M R FB REFIN/REFOUT V2 CLAMP T/H SECOND- V2GND CLAMP ORDER LPF R 1M FB REF SELECT 2.5V REF AGND 1M R FB V3 CLAMP T/H OS 2 SECOND- V3GND CLAMP ORDER LPF R 1M FB OS 1 OS 0 1M R FB V4 CLAMP T/H D A SECOND- OUT V4GND CLAMP ORDER LPF SERIAL R 1M FB D B OUT 8:1 MUX PARALLEL/ RD/SCLK 1M R FB 14-BIT DIGITAL SERIAL V5 CLAMP SAR FILTER T/H INTERFACE CS SECOND- V5GND CLAMP ORDER LPF R 1M FB PAR/SER/BYTE SEL V DRIVE 1M R FB V6 CLAMP T/H SECOND- DB 15:0 V6GND CLAMP PARALLEL ORDER LPF R 1M FB AD7607 1M R FB V7 CLAMP T/H SECOND- V7GND CLAMP ORDER LPF CLK OSC R 1M FB 1M R FB BUSY CONTROL V8 CLAMP T/H INPUTS SECOND- FRSTDATA V8GND CLAMP ORDER LPF R 1M FB AGND CONVST A CONVST B RESET RANGE Figure 1. 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Technical Support www.analog.com 08096-001AD7607 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ADC Transfer Function ............................................................. 20 Applications ....................................................................................... 1 Internal/External Reference ...................................................... 21 Functional Block Diagram .............................................................. 1 Typical Connection Diagram ................................................... 22 Revision History ............................................................................... 2 Power-Down Modes .................................................................. 22 General Description ......................................................................... 3 Conversion Control ................................................................... 23 Specifications ..................................................................................... 4 Digital Interface .............................................................................. 24 Timing Specifications .................................................................. 6 PAR Parallel Interface ( /SER/BYTE SEL = 0) .......................... 24 Absolute Maximum Ratings .......................................................... 10 PAR Parallel Byte Interface ( /SER/BYTE SEL = 1, DB15 = 1) .. 24 Thermal Resistance .................................................................... 10 Serial Interface (PAR/SER/BYTE SEL = 1) ............................. 24 ESD Caution ................................................................................ 10 Reading During Conversion ..................................................... 25 Pin Configuration and Function Descriptions ........................... 11 Digital Filter ................................................................................ 26 Typical Performance Characteristics ........................................... 14 Layout Guidelines ........................................................................... 29 Terminology .................................................................................... 18 Outline Dimensions ....................................................................... 31 Theory of Operation ...................................................................... 19 Ordering Guide .......................................................................... 31 Converter Details ........................................................................ 19 Analog Input ............................................................................... 19 REVISION HISTORY 5/2018Rev. C to Rev. D 1/2012Rev. A to Rev. B Changes to Analog Input Ranges Section ................................... 19 Changes to Patent Note, Note 1 ...................................................... 3 Change to tCONV Parameter, Table 3 ................................................ 6 7/2010Rev. 0 to Rev. A 2/2016Rev. B to Rev. C Change to Table 1 .............................................................................. 1 Changes to Patent Note, Note 1 ...................................................... 3 Changes to Figure 35 ...................................................................... 20 7/2010Revision 0: Initial Version Change to Figure 36 ....................................................................... 21 Changes to Ordering Guide .......................................................... 31 Rev. D Page 2 of 32