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AD7885BN

更新时间： 2024-09-27 22:53:31
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 321K
描述
LC2MOS 16-Bit, High Speed Sampling ADCs

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中文翻译

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AD7885BN 数据手册

 浏览型号AD7885BN的Datasheet PDF文件第2页浏览型号AD7885BN的Datasheet PDF文件第3页浏览型号AD7885BN的Datasheet PDF文件第4页浏览型号AD7885BN的Datasheet PDF文件第5页浏览型号AD7885BN的Datasheet PDF文件第6页浏览型号AD7885BN的Datasheet PDF文件第7页 
2
LC MOS  
a
16-Bit, High Speed Sampling ADCs  
AD7884/AD7885  
FEATURES  
FUNCTIO NAL BLO CK D IAGRAMS  
Monolithic Construction  
Fast Conversion: 5.3 ␮s  
High Throughput: 166 kSPS  
Low Pow er: 250 m W  
V
V
SS  
±3V  
IN  
F
±3V  
S
AV  
SS  
AV  
DD  
AGNDS AGNDF  
DD  
IN  
R3  
3kΩ  
AD7884  
R2  
3kΩ  
C1  
A1  
±5V  
±5V  
S
F
IN  
APPLICATIONS  
R1  
SW1  
IN  
5kΩ  
Autom atic Test Equipm ent  
Medical Instrum entation  
Industrial Control  
D
O
R4 4kΩ  
R
I
DB15  
DB0  
9-BIT  
ADC  
U
T
P
U
T
9
9
SW2  
LATCH  
V
E
R
S
R5  
4kΩ  
R6  
2kΩ  
Data Acquisition System s  
Robotics  
+
16  
16  
ALU  
V
REF–  
A2  
SW3  
16-BIT  
9
ACCURATE  
DAC  
CS  
RD  
TIMER  
CONTROL  
R7  
2kΩ  
GENERAL D ESCRIP TIO N  
T he AD7884/AD7885 is a 16-bit monolithic analog-to-digital  
converter with internal sample-and-hold and a conversion time  
of 5.3 µs. T he maximum throughput rate is 166 kSPS. It uses a  
two pass flash architecture to achieve this speed. T wo input  
ranges are available: ±5 V and ±3 V. Conversion is initiated by  
the CONVST signal. T he result can be read into a microproces-  
sor using the CS and RD inputs on the device. T he AD7884 has  
a 16-bit parallel reading structure while the AD7885 has a byte  
reading structure. T he conversion result is in 2s complement  
code.  
R8  
2kΩ  
V
V
V
F
V
S
INV  
REF–  
GND  
DGND  
V
REF+  
REF+  
CONVST BUSY  
±3V  
AGNDS AGNDF  
IN  
V
DD  
AV  
AV  
SS  
SS  
DD  
R3 3kΩ  
R2  
AD7885  
3kΩ  
C1  
A1  
±5V  
±5V  
S
F
IN  
IN  
R1  
5kΩ  
SW1  
D
O
T he AD7884/AD7885 has its own internal oscillator which con-  
trols conversion. It runs from ±5 V supplies and needs a VREF+  
of +3 V.  
R4 4kΩ  
R
I
DB7  
DB0  
U
T
P
U
T
9-BIT  
ADC  
9
9
SW2  
LATCH  
V
E
R
S
R5  
4kΩ  
R6  
2kΩ  
+
8
16  
ALU  
V
REF–  
T he AD7884 is available in a 40-pin plastic DIP package and in  
a 44-pin PLCC package.  
A2  
SW3  
16-BIT  
9
T he AD7885 is available in a 28-pin plastic DIP package and  
the AD7885A is available in a 44-pin PLCC package.  
ACCURATE  
DAC  
CS  
RD  
CONTROL  
TIMER  
HBEN  
R7  
2kΩ  
R8  
2kΩ  
V
F
V
S
V
INV  
V
REF–  
DGND  
GND  
REF+  
REF+  
CONVST BUSY  
REV. C  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
© Analog Devices, Inc., 1995  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700 Fax: 617/ 326-8703  
1234567...16

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