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AD7916 Dataheets PDF



Part Number AD7916
Manufacturers Analog Devices
Logo Analog Devices
Description 1 MSPS/500 kSPS Differential PulSAR ADCs
Datasheet AD7916 DatasheetAD7916 Datasheet (PDF)

Data Sheet 16-Bit, 1 MSPS/500 kSPS Differential PulSAR ADCs AD7915/AD7916 FEATURES High performance True differential analog input range: ±VREF 0 V to VREF with VREF between 2.5 V and 5 V Throughput: 1 MSPS/500 kSPS options Zero latency architecture 16-bit resolution with no missing codes INL: ±0.4 LSB typical, ±1 LSB maximum Dynamic range: 95.5 dB, VREF = 5 V SNR: 94 dB at fIN = 1 kHz, VREF = 5 V THD: −118.5 dB at fIN = 1 kHz, VREF = 5 V SINAD: 93.5 dB at fIN = 1 kHz, VREF = 5 V Low power dis.

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Data Sheet 16-Bit, 1 MSPS/500 kSPS Differential PulSAR ADCs AD7915/AD7916 FEATURES High performance True differential analog input range: ±VREF 0 V to VREF with VREF between 2.5 V and 5 V Throughput: 1 MSPS/500 kSPS options Zero latency architecture 16-bit resolution with no missing codes INL: ±0.4 LSB typical, ±1 LSB maximum Dynamic range: 95.5 dB, VREF = 5 V SNR: 94 dB at fIN = 1 kHz, VREF = 5 V THD: −118.5 dB at fIN = 1 kHz, VREF = 5 V SINAD: 93.5 dB at fIN = 1 kHz, VREF = 5 V Low power dissipation Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface AD7915: 4 mW at 1 MSPS (VDD only) 7 mW at 1 MSPS (total) AD7916: 2 mW at 500 kSPS (VDD only) 3.7 mW at 500 kSPS (total) 70 μW at 10 kSPS Proprietary serial interface: SPI-/QSPI-/MICROWIRE™-/DSPcompatible1 10-lead packages: MSOP and 3 mm × 3 mm LFCSP Wide operating temperature range: −40°C to +125°C APPLICATIONS Automated test equipment Data acquisition systems Medical instruments Machine automation TYPICAL APPLICATIONS CIRCUIT 2.5V TO 5V 2.5V ±10V, ±5V, .. ADA4940-1 REF VDD VIO IN+ SDI/CS AD7915/ AD7916 IN– GND SCK SDO CNV 1.8V TO 5V 3- OR 4-WIRE INTERFACE (SPI, CS, DAISY CHAIN) 12583-001 Figure 1. GENERAL DESCRIPTION The AD7915/AD7916 are 16-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. They contain a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7915/AD7916 sample the voltage difference between the IN+ and IN− pins. The voltages on these pins typically swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The power consumption of the AD7915/AD7916 scales linearly with throughput. The AD7915/AD7916 are serial peripheral interface (SPI) compatible, which features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus. They are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the separate VIO supply. The AD7915/AD7916 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +125°C. 1 Protected by U.S. Patent 6,703,961. Table 1. MSOP, LFCSP 16-/18-/20-Bit Precision Successive Approximation Register (SAR) ADCs and SAR ADC-Based Devices Type ≤100 kSPS ≤250 kSPS ≤500 kSPS ≤1000 kSPS ≤2000 kSPS µModule® Data Acquisition Solutions Differential 20-Bit AD40221 AD40211 AD40201 18-Bit AD7989-11 AD76911 AD40111 AD40071 AD40031 AD76901 AD79821 AD7989-51 AD79841 16-Bit AD7684 AD76871 AD76881 AD40051 AD40011 AD76931 AD79151 AD79161 Pseudo-Differential 18-Bit AD40101 AD40061 AD40021 16-Bit AD7988-11 AD76851 AD40081 AD40041 AD40001 ADAQ7980 AD7680 AD7694 AD7988-51 AD79801 ADAQ7988 AD7683 AD76861 AD79831 1 Pin for pin compatible. 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 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2015–2020 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD7915/AD7916 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ...................................................................................... 1 Typical Applications Circuit........................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications .................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings ........................................................... 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions........................... 8 Typical Performance Characteristics............................................. 9 Terminology.................................................................................... 13 Theory of Operation ...................................................................... 14 Circuit Information .............................


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