DS1267
Dual Digital Potentiometer Chip
www.dalsemi.com
FEATURES
PIN ASSIGNMENT
§ Ultra-low power consumption, quiet,
pumpless design
§ Two digitally controlled, 256-position
potentiometers
§ Serial port provides means for setting and
reading both potentiometers
§ Resistors can be connected in series to
provide increased total resistance
§ 14-pin DIP, 16-pin SOIC, 20-pin TSSOP
packages
§ Resistive elements are temperature
compensated to ±0.3 LSB relative linearity
§ Standard resistance values:
– DS1267-10 ~ 10 kW
VB
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
NC
SOUT
W0
H0
H1
L1
W1
RST
CLK
GND
L0
COUT
DQ
16-Pin SOIC (300-mil)
See Mech. Drawings Section
– DS1267-50 ~ 50 kW
– DS1267-100 ~ 100 kW
§ Operating Temperature Range:
VB
H1
1
2
3
4
5
6
7
14
13
12
11
10
9
VCC
SOUT
W0
H0
L1
–
Industrial: -40°C to +85°C
W1
PIN DESCRIPTIONS
RST
CLK
GND
L0
L0, L1 - Low End of Resistor
H0, H1 - High End of Resistor
W0, W1 - Wiper Terminal of Resistor
COUT
DQ
8
VB
SOUT
RST
DQ
CLK
COUT
VCC
GND
NC
- Substrate Bias Voltage
- Stacked Configuration Output
- Serial Port Reset Input
- Serial Port Data Input
- Serial Port Clock Input
- Cascade Port Output
- +5 Volt Supply
14-Pin DIP (300-mil)
See Mech. Drawings Section
VB
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
NC
NC
SOUT
W0
H0
H1
- Ground
- No Internal Connection
L1
W1
RST
CLK
NC
L0
COUT
NC
DQ
NC
GND
20-Pin TSSOP (173-mil)
1 of 12
102199
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
