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DS1868 Datasheet

  • DS1868

  • Dual Digital Potentionmeter Chip

  • 276.17KB

  • Dallas   Dallas

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DS1868
Dual Digital Potentiometer Chip
www.dalsemi.com
FEATURES
搂
Ultra-lowpower consumption, quiet, pumpless
design
搂
Two digitally controlled, 256-position
potentiometers
搂
Serial port provides means for setting and
reading both potentiometers
搂
Resistors can be connected in series to
provide increased total resistance
搂
20-pin TSSOP, 16-pin SOIC, and 14-pin DIP
packages are available.
搂
Resistive elements are temperature
compensated to
卤0.3
LSB relative linearity
搂
Standard resistance values:
- DS1868-10
鈭?/div>
10 k鈩?/div>
- DS1868-50
鈭?/div>
50 k鈩?/div>
- DS1868-100
鈭?/div>
100 k鈩?/div>
搂
+5V or 卤3V operation
搂
Operating Temperature Range:
- Industrial: -40掳C to 85掳C
PIN ASSIGNMENT
V
B
DNC
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
W0
H0
L0
C
OUT
DNC
DQ
V
B
H1
L1
V
CC
NC
W1
S
OUT
W0 RST
H0
L0 CLK
C
OUT
DQ GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
S
OUT
W0
H0
L0
C
OUT
DQ
20-Pin TSSOP (173-mil)
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
DS1868S 16-Pin SOIC (300-mil)
14-Pin DIP (300-mil)
PIN DESCRIPTION
L0, L1
H0, H1
W0, W1
S
OUT
- Low End of Resistor
- High End of Resistor
- Wiper Terminal of Resistor
- Stacked Configuration Output
RST
- Serial Port Reset Input
DQ
- Serial Port Data Input
CLK
- Serial Port Clock Input
C
OUT
- Cascade Port Output
V
CC
- +5 Volt Supply
GND
- Ground Connections
NC
- No Internal Connection
V
B
- 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
1 of 14
100899

DS1868 PDF文件相关型号

DS1868-10,DS1868-100,DS1868-50

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