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參數(shù)資料
| 型號： | CAT5121TBI-10-T |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| 中文描述： | 16抽頭的2線接口MiniPot數(shù)字可編程電位器 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 163K |
| 代理商： | CAT5121TBI-10-T |
CAT5120/5121/5122
8
Doc. No. 2121, 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 CAT5120. 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 CAT5121.
Adjustable Gain
Figure 5 shows how to use the variable resistor to
digitally adjust the gain of a noninverting op amp
configuration. Connect the CAT5121 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.
Figure 3. Positive LCD Bias Control
Figure 4. Positive LCD Bias Control
Figure 5a. Adjustable Gain Circuit
Figure 5b. Adjustable Gain Circuit
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
CAT5120
CAT5121
CAT5121
CAT5120
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT5122TBI-10-T | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| CAT5120TBI-10-T10 | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| CAT5121TBI-10-T10 | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| CAT5122TBI-10-T10 | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
| CAT5120TBI-50-T | 16-Tap MiniPot Digitally Programmable Potentiometers with 2-Wire Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT5121TBI-10-T3 | 制造商:ON Semiconductor 功能描述:DPP, MINIPOT 16 TAPS, UP/DOWN - Tape and Reel |
| CAT5121TBI50GT3 | 功能描述:數(shù)字電位計 IC DPP MiniPot 16 taps Up/Down 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT5121TBI-50GT3 | 功能描述:數(shù)字電位計 IC DPP MINIPOT 16 TAPS U/D 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT5121TBI-50-T3 | 制造商:ON Semiconductor 功能描述:DPP, MINIPOT 16 TAPS, UP/DOWN - Tape and Reel |
| CAT5121TPI-10-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
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