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AD7699BCPZ Datasheet(PDF) 1 Page - Analog Devices |
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AD7699BCPZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page 16-Bit, 8-Channel, 500 kSPS PulSAR ADC AD7699 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2008 Analog Devices, Inc. All rights reserved. FEATURES 16-bit resolution with no missing codes 8-channel multiplexer with choice of inputs Unipolar single-ended Differential (GND sense) Pseudobipolar Throughput: 500 kSPS INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR) Dynamic range: 93.3 dB SINAD: 91.5 dB @ 20 kHz THD: −97 dB @ 20 kHz Analog input range: 0 V to V REF with VREF up to VDD Multiple reference types Internal 4.096 V External buffered (up to 4.096 V) External (up to VDD) Internal temperature sensor Channel sequencer, selectable 1-pole filter, busy indicator No pipeline delay, SAR architecture Single-supply 5 V operation with 1.8 V to 5 V logic interface Serial interface compatible with SPI, MICROWIRE, QSPI, and DSP Power dissipation 26 mW @ 500 kSPS 5.2 μW @ 100 SPS Standby current: 50 nA 20-lead 4 mm × 4 mm LFCSP package APPLICATIONS Battery-powered equipment Medical instruments: ECG/EKG Mobile communications: GPS Personal digital assistants Power line monitoring Data acquisition Seismic data acquisition systems Instrumentation Process control FUNCTIONAL BLOCK DIAGRAM AD7699 REF GND VDD VIO DIN SCK SDO CNV 1.8V TO VDD 5V SEQUENCER SPI SERIAL INTERFACE MUX 16-BIT SAR ADC BAND GAP REF TEMP SENSOR REFIN IN0 IN1 IN4 IN5 IN6 IN7 IN3 IN2 COM 0.5V TO VDD 10µF ONE-POLE LPF 0.5V TO 4.096V 0.1µF Figure 1. Table 1. Multichannel 14-/16-Bit PulSAR® ADC Type Channels 250 kSPS 500 kSPS ADC Driver 14-Bit 8 AD7949 ADA4841-x 16-Bit 4 AD7682 ADA4841-x 16-Bit 8 AD7689 AD7699 ADA4841-x GENERAL DESCRIPTION The AD7699 is an 8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD. The AD7699 contains all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; an 8-channel low crosstalk multip- lexer useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal 4.096 V low drift reference and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order. The AD7699 uses a simple serial port interface (SPI) for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput. The AD7699 is housed in a tiny 20-lead LFCSP with operation specified from −40°C to +85°C. |
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