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參數資料
| 型號： | AD977BR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converter |
| 中文描述： | 3-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 284K |
| 代理商： | AD977BR |
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
AD977/AD977A
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
16-Bit, 100 kSPS/200 kSPS
BiCMOS A/D Converter
FUNCTIONAL BLOCK DIAGRAM
PWRD
SYNC
DATACLK
DATA
2R
R1
IN
R2
IN
R3
IN
REF
V
ANA
4k
DGND
TAG
R/
C
CS
V
DIG
AGND2
CAP
AGND1
SWITCHED
CAP ADC
4R
AD977/
AD977A
R = 5k
AD977
R = 2.5k AD977A
4R
R
2.5V
REFERENCE
BUSY
SERIAL
DATA
INTERFACE
CONTROL LOGIC &
INTERNAL CALIBRATION CIRCUITRY
CLOCK
SB/
BTC
EXT/
INT
FEATURES
Fast 16-Bit ADC
100 kSPS Throughput Rate—AD977
200 kSPS Throughput Rate—AD977A
Single 5 V Supply Operation
Power Dissipation 100 mW Max
Power-Down Mode 50 W
Input Ranges:
Unipolar; 0 V–10 V, 0 V–5 V and 0 V–4 V
Bipolar; 10 V, 5 V and 3.3 V
Choice of External or Internal 2.5 V Reference
High Speed Serial Interface
On-Chip Clock
20-Lead Skinny DIP or SOIC Package
28-Lead Skinny SSOP Package
GENERAL DESCRIPTION
The AD977/AD977A is a high speed, low power 16-bit A/D
converter that operates from a single 5 V supply. The AD977A
has a throughput rate of 200 kSPS whereas the AD977 has a
throughput rate of 100 kSPS. Each part contains a successive
approximation, switched capacitor ADC, an internal 2.5 V
reference, and a high speed serial interface. The ADC is factory
calibrated to minimize all linearity errors. The AD977/AD977A is
specified for full scale bipolar input ranges of
±
10 V,
±
5 V and
±
3.3 V, and unipolar ranges of 0 V to 10 V, 0 V to 5 V and
0 V to 4 V.
The AD977/AD977A is comprehensively tested for ac param-
eters such as SNR and THD, as well as the more traditional dc
parameters of offset, gain and linearity.
PRODUCT HIGHLIGHTS
1. Fast Throughput
The AD977/AD977A is a high speed, 16-bit ADC based on
a factory calibrated switched capacitor architecture.
2. Single-Supply Operation
The AD977/AD977A operates from a single 5 V supply and
dissipates only 100 mW max.
3. Comprehensive DC and AC Specifications
In addition to the traditional specifications of offset, gain
and linearity, the AD977/AD977A is fully tested for SNR
and THD.
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