AD775 Analog Devices, AD775 Datasheet - Page 4

• Manufacturer Part Number: AD775
• Description: 8-Bit 20 MSPS/ 60 mW Sampling A/D Converter
• Manufacturer: Analog Devices

AD775
Pin No.
1
2, 24
3
4–9
10
11, 13
12
16
17
23
22
14, 15, 18 AV
19
20, 21
NOTE
Type: AI = Analog Input; DI = Digital Input; DO = Digital Output; P = Power.
CAUTION
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. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
Symbol
OE
DV
D0 (LSB)
D1–D6
D7 (MSB) DO
DV
CLK
V
V
V
V
V
AV
RTS
RT
RB
RBS
IN
DD
SS
SS
DD
PIN CONFIGURATION
(DIP and SOIC)
Type Name and Function
DI
P
DO
DO
P
DI
AI
AI
AI
AI
P
AI
P
OE = Low
Normal Operating Mode.
Digital Ground. Note: DV
Least Significant Bit, Data Bit 0.
Data Bits 1 Through 6.
Most Significant Bit, Data Bit 7.
+5 V Digital Supply. Note: DV
Clock Input.
Reference Top Bias. Short to V
Reference Ladder Top.
Reference Ladder Bottom.
Reference Bottom Bias. Short to V
+5 V Analog Supply. Note: DV
of the AD775.
Analog Input. Input Span = V
Analog Ground. Note: DV
AD775.
PIN DESCRIPTION
SS
SS
and AV
and AV
OE = High
High Impedance Outputs.
DD
RT
RT
DD
–V
–4–
and AV
for Self-Bias.
RB
and AV
RB
SS
MAXIMUM RATINGS*
Supply Voltage (AV
Supply Difference (AV
Ground Difference (AV
Reference Voltage (V
Analog Input Voltage (V
Digital Input Voltage (CLK) . . . . . . . . . . . . . . . . . V
Digital Output Voltage (V
Storage Temperature . . . . . . . . . . . . . . . . . . –55 C to +150 C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
Model
AD775JN –20 C to +75 C 24-Pin 400 Mil Plastic DIP N-24B
AD775JR –20 C to +75 C 24-Pin 300 Mil SOIC
SS
permanent damage to the device. This 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.
.
for Self-Bias.
pins should share a common ground plane on the circuit board.
pins should share a common ground within 0.5 inches of the
DD
DD
pins should share a common supply on the circuit board.
pins should share a common supply within 0.5 inches
Temperature
Range
DD
RT
ORDERING GUIDE
, DV
DD
, V
SS
IN
–DV
–DV
OH
RB
) . . . . . . . . . . . . . . . . . . V
DD
) . . . . . . . . . . . . . . . . V
, V
Package
Description
) . . . . . . . . . . . . . . . . . . . . 7 V
DD
SS
OL
) . . . . . . . . . . . . . . . . . . . 0 V
) . . . . . . . . . . . . . . . . . . 0 V
) . . . . . . . . . . . . V
WARNING!
ESD SENSITIVE DEVICE
DD
DD
DD
DD
Package
Option
R-24A
REV. 0
to V
to V
to V
to V
SS
SS
SS
SS