16-Bit, 500 kSPS PulSAR Dual, 2-Channel, Simultaneous Sampling ADC Data Sheet AD7654 FEATURES FUNCTIONAL BLOCK DIAGRAM AVDD AGND REFGND REFx DVDD DGND Dual, 16-bit, 2-channel simultaneous sampling ADC 16-bit resolution with no missing codes TRACK/HOLD OVDD 2 Throughput: INA1 SERIAL OGND PORT INAN MUX 16 500 kSPS (normal mode) D 15:0 INA2 444 kSPS (impulse mode) SWITCHED A0 MUX SER/PAR CAP DAC INB1 INL: 3.5 LSB max (0.0053% of full scale) EOC INBN MUX SNR: 89 dB typ at 100 kHz BUSY INB2 CLOCK PARALLEL THD: 100 dB at +100 kHz CS PD INTERFACE CONTROL LOGIC AND RD Analog input voltage range: 0 V to 5 V RESET CALIBRATION CIRCUITRY A/B No pipeline delay AD7654 BYTESWAP Parallel and serial 5 V/3 V interface SPI/QSPI/MICROWIRE/DSP compatible IMPULSE CNVST Single 5 V supply operation Figure 1. Power dissipation: Table 1. PulSAR Selection 120 mW typical Type/kSPS 100 to 250 500 to 570 800 to 1000 >1000 2.6 mW at 10 kSPS Pseudo Differential AD7660/ AD7650/ AD7653 Packages: AD7661 AD7652 48-lead low profile quad flat package (LQFP) AD7664/ AD7667 48-lead lead frame chip scale package (LFCSP) AD7666 Low cost True Bipolar AD7663 AD7665 AD7671 True Differential AD7675 AD7676 AD7677 AD7621 APPLICATIONS AD7623 AC motor control 18-Bit AD7678 AD7679 AD7674 AD7641 Multichannel/ AD7654 AD7655 3-phase power control Simultaneous 4-channel data acquisition Uninterrupted power supplies Communications PRODUCT HIGHLIGHTS GENERAL DESCRIPTION 1. Simultaneous Sampling. The AD7654 is a low cost, simultaneous sampling, dual-channel, The AD7654 features two sample-and-hold circuits that 16-bit, charge redistribution SAR, analog-to-digital converter allow simultaneous sampling. It provides inputs for four that operates from a single 5 V power supply. It contains two channels. low noise, wide bandwidth, track-and-hold amplifiers that allow 2. Fast Throughput. simultaneous sampling, a high speed 16-bit sampling ADC, an The AD7654 is a 500 kSPS, charge redistribution, 16-bit internal conversion clock, error correction circuits, and both SAR ADC with internal error correction circuitry. serial and parallel system interface ports. Each track-and-hold 3. Superior INL and No Missing Codes. has a multiplexer in front to provide a 4-channel input ADC. The AD7654 has a maximum integral nonlinearity of The A0 multiplexer control input allows the choice of 3.5 LSB with no missing 16-bit codes. simultaneously sampling input pairs INA1/INB1 (A0 = low) or 4. Single-Supply Operation. INA2/INB2 (A0 = high). The part features a very high sampling The AD7654 operates from a single 5 V supply. In impulse rate mode (normal) and, for low power applications, a reduced mode, its power dissipation decreases with throughput. power mode (impulse) where the power is scaled with the 5. Serial or Parallel Interface. throughput. Operation is specified from 40C to +85C. Versatile parallel or 2-wire serial interface arrangement is compatible with both 3 V and 5 V logic. Rev. D 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 20022015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 03057-001AD7654 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Channel Multiplexer ....................................................... 16 Applications ....................................................................................... 1 Driver Amplifier Choice ........................................................... 16 General Description ......................................................................... 1 Voltage Reference Input ............................................................ 17 Functional Block Diagram .............................................................. 1 Power Supply ............................................................................... 17 Product Highlights ........................................................................... 1 Power Dissipation....................................................................... 17 Revision History ............................................................................... 2 Conversion Control ................................................................... 18 Specif icat ions ..................................................................................... 3 Digital Interface .......................................................................... 18 Timing Specifications .................................................................. 5 Parallel Interface ......................................................................... 18 Absolute Maximum Ratings ............................................................ 7 Serial Interface ............................................................................ 20 ESD Caution .................................................................................. 7 Master Serial Interface ............................................................... 20 Pin Configurations and Function Descriptions ........................... 8 Slave Serial Interface .................................................................. 22 Terminology .................................................................................... 11 Microprocessor Interfacing ....................................................... 24 Typical Performance Characteristics ........................................... 12 SPI Interface (ADSP-2191M) ................................................... 24 Applications Information .............................................................. 14 Application Hints ........................................................................... 25 Circuit Information .................................................................... 14 Layout .......................................................................................... 25 Modes of Operation ................................................................... 14 Outline Dimensions ....................................................................... 26 Transfer Functions...................................................................... 14 Ordering Guide .......................................................................... 27 Typical Connection Diagram ................................................... 16 Analog Inputs .............................................................................. 16 REVISION HISTORY 12/15Rev. C to Rev. D 11/05Rev. A to Rev. B Changes to Microprocessor Interfacing Section, SPI Interface Changes to General Description ..................................................... 1 (ADSP-2191M) Section, and Figure 35 ....................................... 24 Changes to Timing Specifications ................................................... 5 Updated Outline Dimensions ....................................................... 26 Changes to Figure 16 ...................................................................... 13 Changes to Ordering Guide .......................................................... 27 Changes to Figure 18 ...................................................................... 15 Added Table 8 ................................................................................. 17 10/14Rev. B to Rev. C Changes to Figure 24 ...................................................................... 19 Changes to Table 1 ............................................................................ 1 Changes to Figure 29 ...................................................................... 21 Added Figure 5 Renumbered Sequentially .................................. 8 Updated Outline Dimensions ....................................................... 26 Changes to Table 6 .......................................................................... 10 Changes to Ordering Guide .......................................................... 26 Changes to Voltage Reference Input Section and Power Supply Section .............................................................................................. 17 11/04Rev. 0 to Rev. A Deleted the Evaluating the AD7654 Performance Section ....... 25 Changes to Figure 7 ........................................................................ 12 Updated Outline Dimensions ....................................................... 26 Changes to Figure 18 ...................................................................... 15 Changes to Ordering Guide .......................................................... 27 Changes to Figure 19 ...................................................................... 16 Changes to Voltage Reference Input Section .............................. 17 Changes to Conversion Control Section ..................................... 18 Changes to Digital Interface Section ........................................... 18 Updated Outline Dimensions ...................................................... 25 11/02Revision 0: Initial Version Rev. D Page 2 of 27