DS1867 Datasheet, PDF (1/14 Pages) Dallas Semiconductor – Dual Digital Potentiometer with EEPROM

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DS1867
Dual Digital Potentiometer with EEPROM
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°C to +85°C
PIN DESCRIPTION
L0, L1 - Low End of Resistor
H0, H1 - High End of Resistor
W1, W2 - Wiper End of Resistor
V_B
S_OUT
- Substrate Bias
- Wiper for Stacked Configuration
RST
- Serial Port Reset Input
DQ
- Serial Port Data Input
CLK
- Serial Port Clock Input
C_OUT
V_CC
GND
- Cascade Serial Port Output
- +5-Volt Supply Input
- Ground
NC
- No Internal Connection
DNC
- Do Not Connect
PIN ASSIGNMENT
V_B 1
H1 2
L1 3
W1 4
RST 5
CLK 6
GND 7
14
V_CC
13
S_OUT
12 WO
11 HO
10 LO
9
C_OUT
8 DQ
14-Pin DIP (300-mil)
See Mech. Drawings Section
V_B 1
NC 2
H1 3
L1 4
W1 5
RST 6
CLK 7
GND 8
16
V_CC
15 NC
14
S_OUT
13 WO
12 HO
11 LO
10
C_OUT
9 DQ
16-Pin SOIC (300-mil)
See Mech. Drawings Section
V_B 1
NC 2
H1 3
L1 4
W1 5
RST 6
CLK 7
DNC 8
DNC 9
GND 10
20
V_CC
19 DNC
18 DNC
17
S_OUT
16 WO
15 HO
14 LO
13
C_OUT
12 DNC
11 DQ
20-Pin TSSOP (173-mil)
See Mech. Drawings Section
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