AD5220 查看數據表（PDF） - Analog Devices
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AD5220 Datasheet PDF : 11 Pages
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ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C, unless otherwise noted)
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +7 V
VA, VB, VW to GND . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, VDD
AX–BX, AX–WX, BX–WX . . . . . . . . . . . . . . . . . . . . . . ± 20 mA
Digital Input Voltage to GND . . . . . . . . . . . 0 V, VDD + 0.3 V
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Maximum Junction Temperature (TJ MAX) . . . . . . . . +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300°C
Package Power Dissipation . . . . . . . . . . . . . . (TJ max–TA)/θJA
Thermal Resistance θJA
P-DIP (N-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103°C/W
SOIC (SO-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158°C/W
µSOIC (RM-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W
*Stresses above those listed under Absolute Maximum Ratings may cause
permanent damage to the device. This is a stress rating only; 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.
Table I. Truth Table
CS CLK U/D
Lt
H
Lt
L
HXX
Operation
Wiper Increment Toward Terminal A
Wiper Decrement Toward Terminal B
Wiper Position Fixed
1
CS
0
1
CLK
0
1
U/D
0
tCSS
tCH
tCL
tUDS
tCSH
Figure 3. Detail Timing Diagram
AD5220
PIN CONFIGURATION
CLK 1
8 VDD
U/D 2 AD5220 7 CS
TOP VIEW
A1 3 (Not to Scale) 6 B1
GND 4
5 W1
PIN FUNCTION DESCRIPTIONS
Pin
No. Name
1 CLK
2 U/D
3 A1
4 GND
5 W1
6 B1
7 CS
8
VDD
Description
Serial Clock Input, Negative Edge Triggered
UP/DOWN Direction Increment Control
Terminal A1
Ground
Wiper Terminal
Terminal B1
Chip Select Input, Active Low
Positive Power Supply
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 AD5220 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.
REV. A
–3–
WARNING!
ESD SENSITIVE DEVICE
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