AD5222
ABSOLUTE MAXIMUM RATINGS
(TA = 25°C, unless otherwise noted)
ORDERING GUIDE
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +7 V
Kilo
Package
Package
VSS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, –5 V
VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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,
Model
Ohms Temperature Description Option
AD5222BR10
10
–40°C/+85°C SO-14
–40°C/+85°C TSSOP-14
–40°C/+85°C SO-14
–40°C/+85°C TSSOP-14
–40°C/+85°C SO-14
–40°C/+85°C TSSOP-14
R-14
RU-14
R-14
RU-14
R-14
RU-14
R-14
AD5222BRU10 10
AD5222BR50 50
AD5222BRU50 50
AD5222BR100
100
AD5222BRU100 100
1,000 –40°C/+85°C SO-14
AD5222BRU1M 1,000 –40°C/+85°C TSSOP-14
AD5222BR1M
RU-14
The AD5222 die size is 56 mil × 60 mil, 3360 sq. mil; 1.4224 mm × 1.524 mm,
2.1677 sq. mm. Contains 1503 transistors. Patent Number 5495245 applies.
SOIC (SO-14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158°C/W
TSSOP-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W
PIN FUNCTION DESCRIPTIONS
CS
Pin Name
Description
tCH
1
2
3
4
B1
B Terminal RDAC #1.
A Terminal RDAC #1.
Wiper RDAC #1, DACSEL = 0.
Negative Power Supply. Specified for operation
at both 0 V or –2.7 V (Sum of |VDD| + |VSS|
< 5.5 V).
tCSS
tCSH
tCL
A1
W1
VSS
CLK
tUDS
tUDH
U/D
tDSS
5
6
7
8
9
W2
A2
B2
GND
MODE
Wiper RDAC #2, DACSEL = 1.
A Terminal RDAC #2.
B Terminal RDAC #2.
tDSH
DACSEL
MODE
tMDS
tMDH
Ground.
Common MODE = 0, Independent MODE = 1.
Figure 2. Detail Timing Diagram
10 DACSEL DAC Select determines which wiper is incre-
mented in the Independent MODE = 1.
DACSEL = 0 sets RDAC1, DACSEL = 1 sets
RDAC2.
Truth Table
CS CLK
U/D
Operation
11 U/D
12 CLK
13 CS
UP/DOWN Direction Control.
Serial Clock Input, Negative Edge Triggered.
Chip Select Input, Active Low. When CS is
high, the UP/DOWN counter is disabled.
Positive Power Supply. Specified for operation
at both +3 V or +5 V. (Sum of |VDD| + |VSS|
< 5.5 V).
L
L
H
t
t
X
H
L
X
Wiper Increment Toward Terminal A
Wiper Decrement Toward Terminal B
Wiper Position Fixed
Common Mode (MODE = 0) moves both wipers together either
UP or DOWN the resistor array without changing the relative
distance between the wipers. Also, the distance between both
wipers is preserved if either reaches the end of the array. Inde-
pendent Mode (MODE = 1) allows user to control each RDAC
individually: DACSEL = 0 sets RDAC1; DACSEL = 1: sets
RDAC2.
14 VDD
PIN CONFIGURATION
B1
A1
1
2
3
4
5
6
7
14
13
12
11
10
9
V
DD
CS
W1
CLK
AD5222
TOP VIEW
(Not to Scale)
V
U/D
SS
W2
DACSEL
MODE
GND
A2
B2
8
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 AD5222 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
REV. 0
–3–