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AD7892SQ-1 数据表(PDF) 1 Page - Analog Devices |
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AD7892SQ-1 数据表(HTML) 1 Page - Analog Devices |
1 / 14 page AD7892 a LC2MOS Single Supply, 12-Bit 600 kSPS ADC FUNCTIONAL BLOCK DIAGRAM REF OUT/REF IN VDD +2.5V REFERENCE 2k 12-BIT ADC TRACK/HOLD SIGNAL SCALING AD7892 MODE DB0 DB2 DB10/LOW DB11/LOW DGND AGND CONTROL LOGIC CONVST EOC RD CS VIN1 VIN2 CLOCK DB3/ RFS DB4/SCLK DB5/SDATA STANDBY The AD7892 is fabricated in Analog Devices’ Linear Compat- ible CMOS (LC 2MOS) process, a mixed technology process that combines precision bipolar circuits with low power CMOS logic. It is available in a 24-lead, 0.3" wide, plastic or hermetic DIP or in a 24-lead SOIC. PRODUCT HIGHLIGHTS 1. The AD7892-3 features a conversion time of 1.47 µs and a track/hold acquisition time of 200 ns. This allows a through- put rate for the part up to 600 kSPS. The AD7892-1 and AD7892-2 operate with throughput rates of 500 kSPS. 2. The AD7892 operates from a single +5 V supply and con- sumes 60 mW typ making it ideal for low power and portable applications. 3. The part offers a high speed, flexible interface arrangement with parallel and serial interfaces for easy connection to microprocessors, microcontrollers and digital signal processors. GENERAL DESCRIPTION The AD7892 is a high speed, low power, 12-bit A/D converter that operates from a single +5 V supply. The part contains a 1.47 µs successive approximation ADC, an on-chip track/hold amplifier, an internal +2.5 V reference and on-chip versatile interface structures that allow both serial and parallel connec- tion to a microprocessor. The part accepts an analog input range of ±10 V or ±5 V (AD7892-1), 0 V to +2.5 V (AD7892-2) and ±2.5 V (AD7892-3). Overvoltage protection on the analog inputs for the AD7892-1 and AD7892-3 allows the input voltage to go to ±17 V or ±7 V respectively without damaging the ports. The AD7892 offers a choice of two data output formats: a single, parallel, 12-bit word or serial data. Fast bus access times and standard control inputs ensure easy parallel interface to microprocessors and digital signal processors. A high speed serial interface allows direct connection to the serial ports of microcontrollers and digital signal processors. In addition to the traditional dc accuracy specifications such as linearity, full-scale and offset errors, the part is also specified for dynamic performance parameters including harmonic distortion and signal-to-noise ratio. REV. C 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. FEATURES Fast 12-Bit ADC with 1.47 s Conversion Time 600 kSPS Throughput Rate (AD7892-3) 500 kSPS Throughput Rate (AD7892-1, AD7892-2) Single Supply Operation On-Chip Track/Hold Amplifier Selection of Input Ranges: 10 V or 5 V for AD7892-1 0 V to +2.5 V for AD7892-2 2.5 V for AD7892-3 High Speed Serial and Parallel Interface Low Power, 60 mW typ Overvoltage Protection on Analog Inputs (AD7892-1 and AD7892-3) One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 |
类似零件编号 - AD7892SQ-1 |
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类似说明 - AD7892SQ-1 |
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