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AD7688BCPZRL 数据表(PDF) 1 Page - Analog Devices |
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AD7688BCPZRL 数据表(HTML) 1 Page - Analog Devices |
1 / 28 page 16-Bit, 1.5 LSB INL, 500 kSPS PulSAR™ Differential ADC in MSOP/QFN AD7688 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 ©2007–2011 Analog Devices, Inc. All rights reserved. FEATURES 16-bit resolution with no missing codes Throughput: 500 kSPS INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR) Dynamic range: 96.5 dB SNR: 95.5 dB @ 20 kHz THD: −118 dB @ 20 kHz True differential analog input range ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible Daisy-chain multiple ADCs and BUSY indicator Power dissipation 3.75 mW @ 5 V/100 kSPS 3.75 μW @ 5 V/100 SPS Standby current: 1 nA 10-lead MSOP (MSOP-8 size) and 3 mm × 3 mm QFN (LFCSP) (SOT-23 size) Pin-for-pin compatible with AD7685, AD7686, and AD7687 APPLICATIONS Battery-powered equipment Data acquisitions Instrumentation Medical instruments Process controls CODE 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 0 16384 32768 49152 65535 POSITIVE INL = +0.31LSB NEGATIVE INL = –0.39LSB Figure 1. Integral Nonlinearity vs. Code APPLICATION DIAGRAM AD7688 REF GND VDD IN+ IN– VIO SDI SCK SDO CNV 1.8V TO VDD 3- OR 4-WIRE INTERFACE (SPI, DAISY CHAIN, CS) 0.5V TO 5V 5V VREF 0 VREF 0 Figure 2. Table 1. MSOP, QFN (LFCSP)/SOT-23 16-Bit PulSAR ADC Type 100 kSPS 250 kSPS 500 kSPS True Differential AD7684 AD7687 AD7688 Pseudo AD7683 AD7685 AD7686 Differential/Unipolar AD7694 Unipolar AD7680 GENERAL DESCRIPTION The AD7688 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, it samples the voltage difference between IN+ and IN− pins. The voltages on these pins usually swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Its power scales linearly with throughput. The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus and provides an optional BUSY indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO. The AD7688 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C. |
类似零件编号 - AD7688BCPZRL |
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类似说明 - AD7688BCPZRL |
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