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AD7694 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD7694 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 28 page 16-Bit, 500 kSPS PulSAR ADC in MSOP/QFN AD7686 Rev. B 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 ©2005–2007 Analog Devices, Inc. All rights reserved. FEATURES 16-bit resolution with no missing codes Throughput: 500 kSPS INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR) SINAD: 92.5 dB @ 20 kHz THD: −110 dB @ 20 kHz Pseudo differential analog input range 0 V to VREF with VREF up to VDD 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 μW @ 5 V/100 SPS 3.75 mW @ 5 V/100 kSPS Standby current: 1 nA 10-lead MSOP (MSOP-8 size) and 3 mm × 3 mm, 10-lead QFN (LFCSP) (SOT-23 size) Pin-for-pin-compatible with 10-lead MSOP/QFN PulSAR® ADCs APPLICATIONS Battery-powered equipment Data acquisitions Instrumentation Medical instruments Process controls CODE 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 0 16384 32768 49152 65535 POSITIVE INL = +0.52LSB NEGATIVE INL = –0.38LSB Figure 1. Integral Nonlinearity vs. Code FUNCTIONAL BLOCK DIAGRAM AD7686 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 0TO VREF Figure 2. 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 AD7982 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 AD7686 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, the AD7686 samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Power dissipation 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 or provides an optional busy indicator. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO. The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C. |
Số phần tương tự - AD7694 |
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Mô tả tương tự - AD7694 |
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