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參數(shù)資料
| 型號(hào)： | CAT5121TBI-10-T |
| 元件分類： | 數(shù)字電位計(jì) |
| 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(yè)數(shù)： | 7/11頁(yè) |
| 文件大?。?/td> | 163K |
| 代理商： | CAT5121TBI-10-T |
CAT5120/5121/5122
7
Doc. No. 2121, Rev. A
FUNCTIONAL DESCRIPTION
The CAT5120/5121/5122 consist of a fixed resistor and
a wiper contact with 16-tap points that are digitally
controlled through a 2-wire up/down serial interface.
Three end-to-end resistance values are available: 10k
,
50k
and 100k
.
The CAT5120 is designed to operate as a potentiometer.
In this configuration, the low terminal of the resistor array
is connected to ground (pin 2).
The CAT5122 performs as a variable resistor. In this
device, the wiper terminal and high terminal of the
resistor array is connected at pin 5. The CAT5121 is a
similar variable resistor, except the low terminal is
connected to pin 5.
Digital Interface Operation
The Minipots have two modes of operation when the
serial interface is active: increment and decrement
mode. The serial interface is only active when
CS
is
low.
The
CS
and U/
D
inputs control the position of the wiper
along the resistor array. When
CS
transitions from high
to low, the part will go into increment mode if U/
D
input
is high, and into decrement mode when U/
D
input is low.
Once the mode is set, the device will remain in that mode
until
CS
goes high again. A low-to-high transition at the
U/
D
pin will increment or decrement the wiper position
depending on the current mode (Figures 1 and 2).
When the
CS
input transitions to high (serial interface
inactive), the value of the counter is stored and the wiper
position is maintained.
Note that when the wiper reaches the maximum (or
minimum) tap position, the wiper will not wrap around to
the minimum (or maximum) position.
Power-On Reset
All parts in this family feature power-on reset (POR)
circuitry that sets the wiper position to midscale at
power-up. By default, the chip is in the increment mode.
CS
U/D
W
t
CU
t
IL
t
IH
t
IC
t
SETTLE
t
CI
t
SETTLE
Note: "W" is not a digital signal. It represents wiper transitions.
CS
U/D
W
t
CU
t
IL
t
IH
t
SETTLE
t
IC
t
CI
t
SETTLE
Note: "W" is not a digital signal. It represents wiper transitions.
Figure 2. Serial Interface Timing Diagram, Decrement Mode
Figure 1. Serial Interface Timing Diagram, Increment Mode
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(jì) 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(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 |
| CAT5121TBI-50GT3 | 功能描述:數(shù)字電位計(jì) 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(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 |
| 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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