DS1867
Dual Digital Potentiometer with EEPROM
www.dalsemi.com
FEATURES
§
Nonvolatile version of the popular DS1267
§
Low power consumption, quiet, pumpless
design
§
Operates from single 5V or
±5V
supplies
§
Two digitally controlled, 256-position
potentiometers
§
Wiper position is maintained in the absence of
power
§
Serial port provides means for setting and
reading both potentiometers
§
Resistors can be connected in series to
provide increased total resistance
§
16-pin SOIC and 20-pin TSSOP for surface
mount applications
§
Standard resistance values:
- DS1867-10 ~ 10 kΩ
- DS1867-50 ~ 50 kΩ
- DS1867-100 ~ 100 kΩ
§
Operating Temperature Range:
- Industrial: -40° to +85°
C
C
PIN ASSIGNMENT
V
B
H1
L1
W1
RST
CLK
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
S
OUT
WO
HO
LO
C
OUT
DQ
14-Pin DIP (300-mil)
See Mech. Drawings Section
V
B
NC
H1
L1
W1
RST
CLK
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
NC
S
OUT
WO
HO
LO
C
OUT
DQ
PIN DESCRIPTION
L0, L1
H0, H1
W1, W2
V
B
S
OUT
RST
16-Pin SOIC (300-mil)
DQ
CLK
C
OUT
V
CC
GND
NC
DNC
-
-
-
-
-
-
-
-
-
-
-
-
-
Low End of Resistor
High End of Resistor
Wiper End of Resistor
Substrate Bias
Wiper for Stacked Configuration
Serial Port Reset Input
Serial Port Data Input
Serial Port Clock Input
Cascade Serial Port Output
+5-Volt Supply Input
Ground
No Internal Connection
Do Not Connect
See Mech. Drawings Section
V
B
NC
H1
L1
W1
RST
CLK
DNC
DNC
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
DNC
DNC
S
OUT
WO
HO
LO
C
OUT
DNC
DQ
20-Pin TSSOP (173-mil)
See Mech. Drawings Section
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102199
DALLAS [ DALLAS SEMICONDUCTOR ]
