8-/6-/4-Channel DAS with 16-Bit, Bipolar Input ...

1 8-/6-/4-Channel DAS with 16-Bit, Bipolar Input , Simultaneous Sampling ADC Data Sheet AD7606/AD7606-6/AD7606-4 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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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.

2 One Technology Way, Box 9106, Norwood, MA 02062-9106, Tel: 2010 2017 Analog Devices, Inc. All rights reserved. Technical Support FEATURES 8/6/4 simultaneously sampled inputs True Bipolar analog Input ranges: 10 V, 5 V Single 5 V analog supply and V to 5 V VDRIVE Fully integrated data acquisition solution Analog Input clamp protection Input buffer with 1 M analog Input impedance Second-order antialiasing analog filter On-chip accurate reference and reference buffer 16-bit ADC with 200 kSPS on all channels Oversampling capability with digital filter Flexible parallel/serial interface SPI/QSPI /MICROWIRE /DSP compatible Performance 7 kV ESD rating on analog Input channels dB SNR, 107 dB THD LSB INL, LSB DNL Low power.

3 100 mW Standby mode: 25 mW Temperature range: 40 C to +85 C 64-lead LQFP package APPLICATIONS Power-line monitoring and protection systems Multiphase motor control Instrumentation and control systems Multiaxis positioning systems Data acquisition systems (DAS) Table 1. High Resolution, Bipolar Input , Simultaneous Sampling DAS Solutions Resolution Single-Ended Inputs True Differential Inputs Number of Simultaneous Sampling Channels 18 Bits AD7608 AD7609 8 16 Bits AD7606 8 AD7606-6 6 AD7606-4 4 14 Bits AD7607 8 FUNCTIONAL BLOCK DIAGRAM V1V1 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV2V2 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV3V3 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV4V4 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV5V5 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV6V6 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV7V7 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/HV8V8 GNDRFB1M 1M RFBCLAMPCLAMPSECOND-ORDER LPFT/H8.

4 1 MUXAGNDBUSYFRSTDATACONVST ACONVST BRESETRANGECONTROLINPUTSCLK OSCREFIN/REFOUTREF SELECTAGNDOS 2OS 1OS 0 DOUTADOUTBRD/SCLKCSPAR/SER/BYTE SELVDRIVE16- [15:0]AD760608479-001 Figure 1. AD7606/AD7606-6/AD7606-4 Data Sheet Rev. D | Page 2 of 36 TABLE OF CONTENTS Features .. 1 Applications .. 1 Functional Block Diagram .. 1 Revision History .. 2 General Description .. 3 Specifications .. 4 Timing Specifications .. 7 Absolute Maximum Ratings .. 11 Thermal Resistance .. 11 ESD Caution .. 11 Pin Configurations and Function Descriptions .. 12 Typical Performance Characteristics .. 17 Terminology .. 21 Theory of Operation .. 22 Converter Details.

5 22 Analog Input .. 22 ADC Transfer Function .. 23 Internal/External Reference .. 24 Typical Connection Diagram .. 25 Power-Down Modes .. 25 Conversion Control .. 26 Digital Interface .. 27 Parallel Interface (PA R/SER/BYTE SEL = 0) .. 27 Parallel Byte (PA R/SER/BYTE SEL = 1, DB15 = 1) .. 27 Serial Interface (PA R/SER/BYTE SEL = 1) .. 27 Reading During Conversion .. 28 Digital Filter .. 29 Layout 32 Outline Dimensions .. 34 Ordering Guide .. 34 REVISION HISTORY 11/2017 R e v. C to R e v. D Changes to Features 1 Changes to Specifications Table Summary .. 3 Deleted Endnote 1, Table 1; Renumbered Sequentially .. 6 Change to Table 6.

6 14 Changes to Typical Performance Characteristics Section .. 17 Changes to Terminology 21 Changes to Ordering Guide .. 34 1/2012 Rev. B to Rev. C Changes to Analog Input Ranges Section .. 22 10/2011 Rev. A to Rev. B Changes to Input High Voltage (VINH) and Input Low Voltage (VINL) Parameters and Endnote 6, Table 2 .. 4 Changes to Table 3 .. 7 Changes to Table 4 .. 11 Changes to Pin 32 Description, Table 6 .. 13 Changes to Analog Input Clamp Protection Section .. 22 Changes to Typical Connection Diagram Section .. 25 8/2010 R e v. 0 t o R e v. A Changes to Note 1, Table 2 .. 6 5/ 2010 Revision 0: Initial Ve r s i o n Data Sheet AD7606/AD7606-6/AD7606-4 Rev.

7 D | Page 3 of 36 GENERAL DESCRIPTION The AD76061/AD7606-6/AD7606-4 are 16-bit, simultaneous sampling, analog-to -digital data acquisition systems (DAS) with eight, six, and four channels, respectively. Each part contains analog Input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to -digital converter (ADC), a flexible digital filter, a V reference and reference buffer, and high speed serial and parallel interfaces. The AD7606/AD7606-6/AD7606-4 operate from a single 5 V supply and can accommodate 10 V and 5 V true Bipolar Input signals while sampling at throughput rates up to 200 kSPS for all channels.

8 The Input clamp protection circuitry can tolerate voltages up to V. The AD7606 has 1 M analog Input impedance regardless of sampling frequency. The single supply operation, on-chip filtering, and high Input impedance eliminate the need for driver op amps and external Bipolar supplies. The AD7606/AD7606-6/AD7606-4 antialiasing filter has a 3 dB cutoff frequency of 22 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the 3 dB bandwidth. 1 Patent pending. AD7606/AD7606-6/AD7606-4 Data Sheet Rev. D | Page 4 of 36 SPECIFICATIONS VREF = V external/internal, AVCC = V to V, VDRIVE = V to V, fSAMPLE = 200 kSPS, TA = 40 C to +85 C, unless otherwise noted.

9 Table 2. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE fIN = 1 kHz sine wave unless otherwise noted Signal-to-Noise Ratio (SNR)1, 2 Oversampling by 16; 10 V range; fIN = 130 Hz 94 dB Oversampling by 16; 5 V range; fIN = 130 Hz 93 dB No oversampling; 10 V Range 90 dB No oversampling; 5 V range 89 dB Signal-to-(Noise + Distortion) (SINAD)1 No oversampling; 10 V range 88 90 dB No oversampling; 5 V range 87 89 dB Dynamic Range No oversampling; 10 V range dB No oversampling; 5 V range 90 dB Total Harmonic Distortion (THD)1 107 95 dB Peak Harmonic or Spurious Noise (SFDR)1 108 dB Intermodulation Distortion (IMD)

10 1 fa = 1 kHz, fb = kHz Second-Order Terms 110 dB Third-Order Terms 106 dB Channel-to-Channel Isolation1 fIN on unselected channels up to 160 kHz 95 dB ANALOG Input FILTER Full Power Bandwidth 3 dB, 10 V range 23 kHz 3 dB, 5 V range 15 kHz dB, 10 V range 10 kHz dB, 5 V range 5 kHz tGROUP DELAY 10 V Range 11 s 5 V Range 15 s DC ACCURACY Resolution No missing codes 16 Bits Differential Nonlinearity1 LSB3 Integral Nonlinearity1 2 LSB Total Unadjusted Error (TUE) 10 V range 6 LSB 5 V range 12 LSB Positive Full-Scale Error1, 4 External reference 8 32 LSB Internal reference 8 LSB Positive Full-Scale Error Drift External reference 2 ppm/ C Internal reference 7 ppm/ C Positive Full-Scale Error Matching1 10 V range 5 32 LSB 5 V range 16 40 LSB Bipolar Zero Code Error1, 5 10 V range 1 6 LSB 5 V range 3 12 LSB Bipolar Zero Code Error Drift 10 V range 10 V/ C 5 V range 5 V/ C Bipolar Zero Code Error Matching1 10 V range 1 8 LSB 5 V range 6 22 LSB Negative Full-Scale Error1.