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AD7982 датащи(PDF) 1 Page - Analog Devices |
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AD7982 датащи(HTML) 1 Page - Analog Devices |
1 / 23 page 18-bit, 1 MSPS PulSAR™ ADC in MSOP/QFN Preliminary Technical Data AD7982 Rev PrC 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 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. 18-bit resolution with no missing codes Throughput: 1MSPS Low Power dissipation: 7.5 mW @ 1MSPS, 75 μW @ 10kSPS INL: ±1 LSB typ, ±2.5 LSB max Dynamic range: 99 dB True differential analog input range: ±VREF 0 V to VREF with VREF between 2.5V to 5.0V Any input range and easy to drive with the ADA4941 No pipeline delay Single-supply 2.5V 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 10-lead package: MSOP (MSOP-8 size) and QFN (LFCSP), 3 mm × 3 mm same space as SOT-23 APPLICATIONS Battery-powered equipment Data acquisitions Instrumentation Medical instruments Seismic Data Acquisition Systems Table 1. MSOP, QFN(LFCSP)/SOT-23 14, 16 and18-Bit ADC Type 100 kSPS 250 kSPS 400- 500 kSPS 1000 kSPS ADC Driver 18Bit AD76911 AD76901 AD79821 ADA4941 ADA4841 16Bit AD7680 AD7683 AD7684 AD76851 AD76871 AD7694 AD76861 AD76881 AD76931 AD79801 ADA4941 ADA4841 14Bit AD7940 AD79421 AD79461 1 Pin-for-pin compatible. APPLICATION DIAGRAM EXAMPLE AD7982 REF GND VDD IN+ IN– VIO SDI SCK SDO CNV 1.8 TO 5V 3- OR 4-WIRE INTERFACE (SPI, , CS DAISY CHAIN) 2.5 TO 5V 2.5V ADA4941 ±10V, ±5V, .. Figure 1. GENERAL DESCRIPTION The AD7982 is a 18-bit, successive approximation, analog-to- digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. 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 independently of the supply voltage, VDD. 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 AD7982 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C. |
Аналогичный номер детали - AD7982 |
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Аналогичное описание - AD7982 |
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