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DS1868 Datasheet(PDF) 1 Page - Dallas Semiconductor

Part No. DS1868
Description  Dual Digital Potentiometer Chip
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1868 Datasheet(HTML) 1 Page - Dallas Semiconductor

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100899
FEATURES
§ Ultra-lowpower 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
§ 20-pin TSSOP, 16-pin SOIC, and 14-pin DIP
packages are available.
§ Resistive elements are temperature
compensated to
±0.3 LSB relative linearity
§ Standard resistance values:
-
DS1868-10
∼10 kΩ
-
DS1868-50
∼50 kΩ
-
DS1868-100
∼100 kΩ
§ +5V or ±3V operation
§ Operating Temperature Range:
-
Industrial: -40°C to 85°C
PIN ASSIGNMENT
PIN DESCRIPTION
L0, L1
- Low End of Resistor
H0, H1
- High End of Resistor
W0, W1
- Wiper Terminal of Resistor
SOUT
- Stacked Configuration Output
RST
- Serial Port Reset Input
DQ
- Serial Port Data Input
CLK
- Serial Port Clock Input
COUT
- Cascade Port Output
VCC
- +5 Volt Supply
GND
- Ground Connections
NC
- No Internal Connection
VB
- Substrate Bias Voltage
DNC
- Do Not Connect
*All GND pins must be connected to ground.
DESCRIPTION
The DS1868 Dual Digital Potentiometer Chip consists of two digitally controlled solid-state
potentiometers. Each potentiometer is composed of 256 resistive sections. Between each resistive section
and both ends of the potentiometer are tap points which are accessible to the wiper. The position of the
DS1868
Dual Digital Potentiometer Chip
www.dalsemi.com
20-Pin TSSOP (173-mil)
VB
DNC
H1
L1
W1
RST
CLK
DNC
DNC
GND
VCC
DNC
DNC
SOUT
W0
H0
L0
COUT
DNC
DQ
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
DS1868S 16-Pin SOIC (300-mil)
VB
NC
H1
L1
W1
RST
CLK
GND
VCC
NC
SOUT
W0
H0
L0
COUT
DQ
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
14-Pin DIP (300-mil)
VB
H1
L1
W1
RST
CLK
VCC
SOUT
W0
H0
L0
COUT
14
13
12
11
10
8
1
2
3
4
5
7
DQ
GND
9
6


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