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參數資料
| 型號： | AD7871KN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 10-Bit, 20 MSPS ADC SE/Diff Inputs with Int References and 9.5 bit ENOB 28-SOIC -40 to 85 |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 344K |
| 代理商： | AD7871KN |
REV. D
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
LC
2
MOS
Complete 14-Bit, Sampling ADCs
AD7871/AD7872
FEATURES
Complete Monolithic 14-Bit ADC
2s Complement Coding
Parallel, Byte and Serial Digital Interface
80 dB SNR at 10 kHz Input Frequency
57 ns Data Access Time
Low Power—50 mW typ
83 kSPS Throughput Rate
16-Lead SOIC (AD7872)
APPLICATIONS
Digital Signal Processing
High Speed Modems
Speech Recognition and Synthesis
Spectrum Analysis
DSP Servo Control
GE NE RAL DE SCRIPT ION
T he AD7871 and AD7872 are fast, complete, 14-bit analog-to-
digital converters. T hey consist of a track/hold amplifier,
successive-approximation ADC, 3 V buried Zener reference and
versatile interface logic. T he ADC features a self-contained, laser
trimmed internal clock, so no external clock timing components
are required. T he on-chip clock may be overridden to synchronize
ADC operation to the digital system for minimum noise.
T he AD7871 offers a choice of three data output formats: a sin-
gle, parallel, 14-bit word; two 8-bit bytes or a 14-bit serial data
stream. T he AD7872 is a serial output device only. T he two
parts are capable of interfacing to all modern microprocessors
and digital signal processors.
T he AD7871 and AD7872 operate from
±
5 V power supplies,
accept bipolar input signals of
±
3 V and can convert full power
signals up to 41.5 kHz.
In addition to the traditional dc accuracy specifications, the
AD7871 and AD7872 are also fully specified for dynamic perfor-
mance parameters including distortion and signal-to-noise ratio.
Both devices are fabricated in Analog Devices’ LC
2
MOS mixed
technology process. T he AD7871 is available in 28-pin plastic DIP
and PLCC packages. T he AD7872 is available in a 16-pin plastic
DIP, hermetic DIP and 16-lead SOIC packages.
FUNCT IONAL BLOCK DIAGRAMS
PRODUCT HIGHLIGHT S
1. Complete 14-Bit ADC on a Chip.
2. Dynamic Specifications for DSP Users.
3. Low Power.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
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| AD7872AN | LC2MOS Complete 14-Bit, Sampling ADCs |
| AD7872BR | LC2MOS Complete 14-Bit, Sampling ADCs |
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