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AD676BD 데이터시트(PDF) 1 Page - Analog Devices |
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AD676BD 데이터시트(HTML) 1 Page - Analog Devices |
1 / 17 page FUNCTIONAL BLOCK DIAGRAM DIGITAL CHIP PAT GEN ALU RAM MICRO-CODED CONTROLLER AGND AGND SENSE CAL SAMPLE BUSY COMP ANALOG CHIP 16-BIT DAC INPUT BUFFERS LOGIC & TIMING CAL DAC LEVEL TRANSLATORS 16 BIT 1 – BIT 16 V IN VREF 15 14 16 13 8 9 AD676 SAR 1 6 19 28 CLK 10 L A T C H 7 REV. A 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. a 16-Bit 100 kSPS Sampling ADC AD676 FEATURES Autocalibrating On-Chip Sample-Hold Function Parallel Output Format 16 Bits No Missing Codes 1 LSB INL –97 dB THD 90 dB S/(N+D) 1 MHz Full Power Bandwidth PRODUCT DESCRIPTION The AD676 is a multipurpose 16-bit parallel output analog-to- digital converter which utilizes a switched-capacitor/charge redistribution architecture to achieve a 100 kSPS conversion rate (10 µs total conversion time). Overall performance is opti- mized by digitally correcting internal nonlinearities through on-chip autocalibration. The AD676 circuitry is segmented onto two monolithic chips— a digital control chip fabricated on Analog Devices DSP CMOS process and an analog ADC chip fabricated on our BiMOS II process. Both chips are contained in a single package. The AD676 is specified for ac (or “dynamic”) parameters such as S/(N+D) Ratio, THD and IMD which are important in sig- nal processing applications. In addition, dc parameters are specified which are important in measurement applications. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 The AD676 operates from +5 V and ±12 V supplies and typi- cally consumes 360 mW during conversion. The digital supply (VDD) is separated from the analog supplies (VCC, VEE) for re- duced digital crosstalk. An analog ground sense is provided for the analog input. Separate analog and digital grounds are also provided. The AD676 is available in a 28-pin plastic DIP or 28-pin side- brazed ceramic package. A serial-output version, the AD677, is available in a 16-pin 300 mil wide ceramic or plastic package. |
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