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參數(shù)資料
| 型號： | DS1868 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Dual Digital Potentiometer Chip(雙路數(shù)字電位器) |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 112K |
| 代理商： | DS1868 |
DS1868
Dual Digital Potentiometer Chip
DS1868
PRELIMINARY
022698 1/11
FEATURES
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
20–pin TSSOP package
Resistive elements are temperature compensated to
±
0.3 LSB relative linearity
Standard resistance values:
– DS1868–10 10k
– DS1868–50 50k
– DS1868–100 100k
+5V or
±
3V operation
Temperature: 0
°
C to 70
°
C commerical
–40
°
C to 85
°
C industrial
DESCRIPTION
The DS1868 consist of two digitally controlled solid–
state potentiometers. Each potentiometer is composed
of 256 resistive sections. Between each resistive sec-
tion and both ends of the potentiometer are tap points
which are accessible to the wiper. The position of the
wiper on the resistor array is set by an 8–bit value that
controls which tap point is connected to the wiper output.
Communication and control of the device is accom-
plished via a 3–wire serial port interface. This interface
allows the device wiper position to be read or written.
Both potentiometers can be connected in series (or
stacked) for an increased total resistance with the same
resolution. For multiple device–single processor envi-
ronments, the DS1868 can be cascaded or daisy
chained. This feature provides for control of multiple
devices over a single 3–wire bus.
The DS1868 is offered in three standard resistance val-
ues which include 10k, 50k, and 100k Ohm versions.
The part is available in 16–pin SOIC (300 mil), 14–pin
DIP, and 20–pin (173 mil) TSSOP packages. Both com-
merical and industrial temperature grades are also
available.
PIN ASSIGNMENT
V
B
RST
CLK
GND
C
OUT
DQ
S
OUT
W0
H0
L0
V
CC
NC
RST
C
OUT
DNC
S
OUT
W0
V
CC
DNC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DNC
H0
L0
DQ
DNC
H1
L1
W1
CLK
DNC
DNC
GND
20–PIN TSSOP (173 MIL)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
H1
L1
W1
DS1868S 16–PIN SOIC (300 MIL)
RST
C
OUT
S
OUT
V
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
W0
H0
L0
DQ
H1
L1
W1
CLK
GND
14–PIN DIP (300 MIL)
V
B
V
B
PIN DESCRIPTION
L0, L1
H0, H1
W0, W1
S
OUT
RST
DQ
CLK
C
OUT
V
CC
GND
NC
V
B
DNC
*All GND pins must be connected to ground.
– Low End of Resistor
– High End of Resistor
– Wiper Terminal of Resistor
– Stacked Configuration Output
– Serial Port Reset Input
– Serial Port Data Input
– Serial Port Clock Input
– Cascade Port Output
– +5 Volt Supply
– Ground Connections
– No Internal Connection
– Substrate Bias Voltage
– Do Not Connect
OPERATION
The DS1868 contains two 256–position potentiometers
whose wiper positions are set by an 8–bit value. These
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1868-010 | 制造商:Maxim Integrated Products 功能描述: |
| DS1868-050 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Potentiometer |
| DS1868-10 | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1868-10+ | 功能描述:數(shù)字電位計 IC Dual RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1868-100 | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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