Datasheet

AD5220
–3–REV.
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25°C, unless otherwise noted)
V
DD
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +7 V
V
A
, V
B
, V
W
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, V
DD
A
X
–B
X
, A
X
–W
X
, B
X
–W
X
. . . . . . . . . . . . . . . . . . . . . . ±20 mA
Digital Input Voltage to GND . . . . . . . . . . . 0 V, V
DD
+ 0.3 V
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Maximum Junction Temperature (T
J
MAX) . . . . . . . . +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300°C
Package Power Dissipation . . . . . . . . . . . . . . (T
J
max–T
A
)/θ
JA
Thermal Resistance θ
JA
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.
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.
WARNING!
ESD SENSITIVE DEVICE
PIN CONFIGURATION
TOP VIEW
(Not to Scale)
8
7
6
5
1
2
3
4
CLK
U/D
A1
GND
V
DD
CS
B1
W1
AD5220
t
CSS
t
CH
t
CSH
t
UDS
t
CL
1
0
1
0
1
0
CS
CLK
U/D
Figure 3. Detail Timing Diagram
Table I. Truth Table
CS CLK U/D Operation
L t H Wiper Increment Toward Terminal A
L t L Wiper Decrement Toward Terminal B
H X X Wiper Position Fixed
PIN FUNCTION DESCRIPTIONS
Pin
No. Name Description
1 CLK Serial Clock Input, Negative Edge Triggered
2U/D UP/DOWN Direction Increment Control
3 A1 Terminal A1
4 GND Ground
5 W1 Wiper Terminal
6 B1 Terminal B1
7 CS Chip Select Input, Active Low
8V
DD
Positive Power Supply
A