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AD7688 Datasheet(PDF) 1 Page - Analog Devices |
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AD7688 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page 16-Bit, 100 kSPS PulSAR, Differential ADC in MSOP AD7684 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved. FEATURES 16-bit resolution with no missing codes Throughput: 100 kSPS INL: ±1 LSB typical, ±3 LSB maximum True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs Single-supply operation: 2.7 V to 5.5 V Serial interface SPI®-/QSPI-™/MICROWIRE-™/DSP-compatible Power dissipation 4 mW @ 5 V 1.5 mW @ 2.7 V 150 μW @ 2.7 V/10 kSPS Standby current: 1 nA 8-lead MSOP package APPLICATIONS Battery-powered equipment Data acquisition Instrumentation Medical instruments Process control APPLICATION DIAGRAM AD7684 REF GND VDD +IN –IN DCLOCK DOUT CS 3-WIRE SPI INTERFACE 0.5V TO VDD 2.7V TO 5.5V 0 VREF 0 VREF Figure 1. Table 1. MSOP, QFN (LFCSP)/SOT-23 14-/16-/18-Bit PulSAR ADC Type 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥ 1000 kSPS ADC Driver 18-Bit True AD7691 AD7690 AD7982 ADA4941 Differential AD7984 ADA4841 16-Bit True AD7684 AD7687 AD7688 ADA4941 Differential AD7693 ADA4841 16-Bit Pseudo AD7680 AD7685 AD7686 AD7980 ADA4841 Differential AD7683 AD7694 14-Bit Pseudo Differential AD7940 AD7942 AD7946 ADA4841 GENERAL DESCRIPTION The AD7684 is a 16-bit, charge redistribution, successive approximation, PulSAR® analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.5 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a serial, SPI-compatible interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit. On the CS falling edge, it samples the voltage difference between +IN and –IN pins. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Its power scales linearly with throughput. The AD7684 is housed in an 8-lead MSOP, with an operating temperature specified from −40°C to +85°C. |
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