16-Bit, 250 kSPS, Unipolar/Bipolar Programmable Input PulSAR ADC Data Sheet AD7610 FEATURES FUNCTIONAL BLOCK DIAGRAM Multiple pins/software programmable input ranges: TEMP REFBUFIN REF REFGND VCC VEE DVDD DGND 5 V, 10 V, 5 V, 10 V OVDD AGND Pins or serial SPI-compatible input ranges/mode selection AD7610 REF OGND AVDD AMP Throughput: 250 kSPS SERIAL REF PDREF DATAPORT 16-bit resolution with no missing codes SERIAL PDBUF CONFIGURATION INL: 0.75 LSB typ, 1.5 LSB max (23 ppm of FSR) PORT 16 IN+ SWITCHED D 15:0 CAP DAC SNR: 94 dB 2 kHz IN SER/PAR iCMOS process technology BYTESWAP 5 V internal reference: typical drift 3 ppm/C PARALLEL OB/2C CLOCK INTERFACE CNVST On-chip temperature sensor BUSY PD CONTROL LOGIC AND No pipeline delay (SAR architecture) RD CALIBRATION CIRCUITRY RESET Parallel (16- or 8-bit bus) and serial 5 V/3.3 V interface CS SPI-/QSPI-/MICROWIRE-/DSP-compatible BIPOLAR TEN Power dissipation 90 mW 250 kSPS Figure 1. 10 mW 1 kSPS 48-lead LQFP and LFCSP (7 mm 7 mm) packages APPLICATIONS Process control Medical instruments High speed data acquisition Digital signal processing Instrumentation Spectrum analysis ATE GENERAL DESCRIPTION Table 1. 48-Lead 14-/16-/18-Bit PulSAR Selection The AD7610 is a 16-bit charge redistribution successive approxi- 100 kSPS to 500 kSPS to 800 kSPS to >1000 mation register (SAR), architecture analog-to-digital converter Type 250 kSPS 570 kSPS 1000 kSPS kSPS (ADC) fabricated on Analog Devices, Inc.s iCMOS high voltage Pseudo AD7651 AD7650 AD7653 Differential AD7660 AD7652 AD7667 process. The device is configured through hardware or via a AD7661 AD7664 dedicated write only serial configuration port for input range AD7666 and operating mode. The AD7610 contains a high speed 16-bit True Bipolar AD7610 AD7665 AD7612 AD7671 sampling ADC, an internal conversion clock, an internal reference AD7663 AD7951 (and buffer), error correction circuits, and both serial and parallel True AD7675 AD7676 AD7677 AD7621 system interface ports. A falling edge on CNVST samples the Differential AD7622 analog input on IN+ with respect to a ground sense, IN. The AD7623 AD7610 features four different analog input ranges: 0 V to 5 V, 0 V 18-Bit, True AD7678 AD7679 AD7674 AD7641 Differential AD7643 to 10 V, 5 V, and 10 V. Power consumption is scaled linearly Multichannel/ AD7654 with throughput. The device is available in Pb-free 48-lead, low- Simultaneous AD7655 profile quad flat package (LQFP) and a lead frame chip-scale (LFCSP VQ) package. Operation is specified from 40C to +85C. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20062012 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 06395-001AD7610 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Voltage Reference Input/Output .............................................. 20 Applications ....................................................................................... 1 Power Supplies ............................................................................ 21 Functional Block Diagram .............................................................. 1 Conversion Control ................................................................... 22 General Description ......................................................................... 1 Interfaces.......................................................................................... 23 Revision History ............................................................................... 2 Digital Interface .......................................................................... 23 Specifications ..................................................................................... 3 Parallel Interface ......................................................................... 23 Timing Specifications .................................................................. 5 Serial Interface ............................................................................ 24 Absolute Maximum Ratings ............................................................ 7 Master Serial Interface ............................................................... 24 ESD Caution .................................................................................. 7 Slave Serial Interface .................................................................. 26 Pin Configuration and Function Descriptions ............................. 8 Hardware Configuration ........................................................... 28 Typical Performance Characteristics ........................................... 11 Software Configuration ............................................................. 28 Terminology .................................................................................... 15 Microprocessor Interfacing ....................................................... 29 Theory of Operation ...................................................................... 16 Application Information ................................................................ 30 Overview ...................................................................................... 16 Layout Guidelines....................................................................... 30 Converter Operation .................................................................. 16 Evaluating Performance ............................................................ 30 Transfer Functions...................................................................... 17 Outline Dimensions ....................................................................... 31 Typical Connection Diagram ................................................... 18 Ordering Guide .......................................................................... 31 Analog Inputs .............................................................................. 19 REVISION HISTORY 12/12Rev. 0 to Rev. A Added Exposed Pad Note ................................................................ 8 Changes to Power Sequencing Section ........................................ 23 Updated Outline Dimensions ....................................................... 31 Changes to Ordering Guide .......................................................... 31 10/06Revision 0: Initial Version Rev. A Page 2 of 32