參數(shù)資料
型號： AD775
廠商： Analog Devices, Inc.
英文描述： 8-Bit 20 MSPS, 60 mW Sampling A/D Converter(8位,20MSPS 60mW采樣A/D轉(zhuǎn)換器)
中文描述： 8位20 MSPS的60毫瓦采樣A / D轉(zhuǎn)換器（8位，20MSPS 60mW的采樣的A / D轉(zhuǎn)換器）
文件頁數(shù)： 4/12頁
文件大?。?/td> 343K
代理商： AD775
AD775
REV. 0
–4–
WARNING!
ESD SENSITIVE DEVICE
C AUT ION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD775 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. T herefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
PIN DE SCRIPT ION
Pin No.
Symbol
T ype Name and Function
1
OE
DI
OE
= Low
Normal Operating Mode.
Digital Ground. Note: DV
SS
and AV
SS
pins should share a common ground plane on the circuit board.
Least Significant Bit, Data Bit 0.
Data Bits 1 T hrough 6.
Most Significant Bit, Data Bit 7.
+5 V Digital Supply. Note: DV
DD
and AV
DD
pins should share a common supply on the circuit board.
Clock Input.
Reference T op Bias. Short to V
RT
for Self-Bias.
Reference Ladder T op.
Reference Ladder Bottom.
Reference Bottom Bias. Short to V
RB
for Self-Bias.
+5 V Analog Supply. Note: DV
DD
and AV
DD
pins should share a common supply within 0.5 inches
of the AD775.
Analog Input. Input Span = V
RT
–V
RB
.
Analog Ground. Note: DV
SS
and AV
SS
pins should share a common ground within 0.5 inches of the
AD775.
OE
= High
High Impedance Outputs.
2, 24
3
4–9
10
11, 13
12
16
17
23
22
14, 15, 18 AV
DD
DV
SS
D0 (LSB)
D1–D6
D7 (MSB)
DV
DD
CLK
V
RT S
V
RT
V
RB
V
RBS
P
DO
DO
DO
P
DI
AI
AI
AI
AI
P
19
20, 21
V
IN
AV
SS
AI
P
NOT E
T ype: AI = Analog Input; DI = Digital Input; DO = Digital Output; P = Power.
PIN CONFIGURAT ION
(DIP and SOIC)
MAX IMUM RAT INGS*
Supply Voltage (AV
DD
, DV
DD
) . . . . . . . . . . . . . . . . . . . . 7 V
Supply Difference (AV
DD
–DV
DD
) . . . . . . . . . . . . . . . . . . 0 V
Ground Difference (AV
SS
–DV
SS
) . . . . . . . . . . . . . . . . . . . 0 V
Reference Voltage (V
RT
, V
RB
) . . . . . . . . . . . . . . . . V
DD
to V
SS
Analog Input Voltage (V
IN
) . . . . . . . . . . . . . . . . . . V
DD
to V
SS
Digital Input Voltage (CLK ) . . . . . . . . . . . . . . . . . V
DD
to V
SS
Digital Output Voltage (V
OH
, V
OL
) . . . . . . . . . . . . V
DD
to V
SS
Storage T emperature . . . . . . . . . . . . . . . . . . –55
°
C to +150
°
C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. T his is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ORDE RING GUIDE
T emperature
Range
Package
Description
Package
Option
Model
AD775JN –20
°
C to +75
°
C
AD775JR
–20
°
C to +75
°
C
24-Pin 400 Mil Plastic DIP N-24B
24-Pin 300 Mil SOIC
R-24A
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