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參數(shù)資料
| 型號(hào)： | CAT5110TPI-50-T10 |
| 元件分類(lèi)： | 數(shù)字電位計(jì) |
| 英文描述： | 32-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| 中文描述： | 32抽頭的2線接口MiniPot數(shù)字可編程電位器 |
| 文件頁(yè)數(shù)： | 8/11頁(yè) |
| 文件大?。?/td> | 163K |
| 代理商： | CAT5110TPI-50-T10 |
CAT5110/5118/5119
8
Doc. No. 2120, Rev. A
APPLICATIONS INFORMATION
The Minipots are intended for circuits requiring digitally
controlled adjustable resistance, such as LCD contrast
control, where voltage biasing adjusts the display con-
trast.
Alternative Positive LCD Bias Control
Use an op amp to provide buffering and gain on the
output of the CAT5110. Connect the mechanical
potentiometer to the positive input of a noninverting op
amp (Figure 3) to select a portion of the input signal by
digitally controlling the wiper terminal. Figure 4 shows a
similar circuit for the CAT5119.
Adjustable Gain
Figure 5 shows how to use the variable resistor to
digitally adjust the gain of a noninverting op amp
configuration. Connect the CAT5119 in series with a
resistor to ground to form the adjustable gain control of
a noninverting amplifier. The Minipots have a low 5ppm/
C ratiometric tempco that allows for a very stable
adjustable gain configuration over temperature.
30V
W
L
H
+5V
V
OUT
30V
L
H
+5V
V
OUT
V
CC
L
H
V
IN
V
OUT
V
CC
L
H
W
V
IN
V
OUT
CAT5110
CAT5119
CAT5119
CAT5110
Figure 3. Positive LCD Bias Control
Figure 4. Positive LCD Bias Control
Figure 5a. Adjustable Gain Circuit
Figure 5b. Adjustable Gain Circuit
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| CAT5110 | 32-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| CAT5110SBI-50-T10 | 32-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT5111 | 制造商:Datak Corporation 功能描述: |
| CAT5111_07 | 制造商:CATALYST 制造商全稱(chēng):Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer (DPP?) with Buffered Wiper |
| CAT5111_08 | 制造商:CATALYST 制造商全稱(chēng):Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer (DPP?) with Buffered Wiper |
| CAT5111B | 制造商:Datak Corporation 功能描述: |
| CAT5111L-00 | 功能描述:數(shù)字電位計(jì) IC Com Temp 100K Up/Dwn 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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