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參數(shù)資料
| 型號： | CAT5111LI-10-G |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 100-Tap Digitally Programmable Potentiometer (DPP⑩) with Buffered Wiper |
| 中文描述： | 100抽頭數(shù)字可編程電位器的緩沖雨刷（民進黨⑩） |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 260K |
| 代理商： | CAT5111LI-10-G |
CAT5111
Doc. No. MD-2008 Rev. P
2
2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
PIN
CONFIGURATION
PDIP 8-Lead (L)
SOIC 8 Lead (V)
MSOP 8 Lead (Z)
INC
1
8
V
CC
U/D
2
7
ˉˉ
R
H
3
6
R
L
GND
4
5
R
WB
CAT
TSSOP 8 Lead (Y)
ˉˉ
1
8
R
L
V
CC
2
7
R
WB
INC
3
6
GND
U/D
4
5
R
H
CAT
PIN DESCRIPTIONS
Name Function
Increment Control
U/D
Up/Down Control
R
H
Potentiometer High Terminal
GND
Ground
R
WB
Buffered Wiper Terminal
R
L
Potentiometer Low Terminal
ˉˉ
Chip Select
V
CC
Supply Voltage
ˉˉˉ
PIN DESCRIPTION
INC
ˉˉˉ:
Increment Control Input
The ˉˉˉ input (on the falling edge) moves the wiper in
the up or down direction determined by the condition
of the U/D input.
U/D:
Up/Down Control Input
The U/D input controls the direction of the wiper
movement. When in a high state and ˉˉ is low, any
high-to-low transition on ˉˉˉ will cause the wiper to
move one increment toward the R
H
terminal. When in
a low state and ˉˉ is low, any high-to-low transition
on ˉˉˉ will cause the wiper to move one increment
towards the R
L
terminal.
R
H
:
High End Potentiometer Terminal
R
H
is the high end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential greater than the R
L
terminal. Voltage applied
to the R
H
terminal cannot exceed the supply voltage,
V
CC
or go below ground, GND.
R
WB
:
Wiper Potentiometer Terminal (Buffered)
R
WB
is the buffered wiper terminal of the poten–
tiometer. Its position on the resistor array is controlled
by the control inputs, ˉˉˉ, U/D and ˉˉ.
R
L
:
Low End Potentiometer Terminal
R
L
is the low end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential less than the R
H
terminal. Voltage applied to
the R
L
terminal cannot exceed the supply voltage,
V
CC
or go below ground, GND. R
L
and R
H
are electri-
cally interchangeable.
ˉˉ:
Chip Select
The chip select input is used to activate the control
input of the CAT5111 and is active low. When in a
high state, activity on the ˉˉˉ and U/D inputs will not
affect or change the position of the wiper.
DEVICE OPERATION
The CAT5111 operates like a digitally controlled
potentiometer with R
H
and R
L
equivalent to the high
and low terminals and R
WB
equivalent to the mecha–
nical potentiometer's wiper. There are 100 available
tap positions including the resistor end points, R
H
and
R
L
. There are 99 resistor elements connected in
series between the R
H
and R
L
terminals. The wiper
terminal is connected to one of the 100 taps and
controlled by three inputs, ˉˉˉ, U/D and ˉˉ. These
inputs control a seven-bit up/down counter whose
output is decoded to select the wiper position. The
selected wiper position can be stored in nonvolatile
memory using the INC and ˉˉ inputs.
With ˉˉ set LOW the CAT5111 is selected and will
respond to the U/D and ˉˉˉ inputs. HIGH to LOW
transitions on ˉˉˉ wil increment or decrement the
wiper (depending on the state of the U/D input and
seven-bit counter). The wiper, when at either fixed
terminal, acts like its mechanical equivalent and does
not move beyond the last position. The value of the
counter is stored in nonvolatile memory whenever ˉˉ
transitions HIGH while the ˉˉˉ input is also HIGH.
When the CAT5111 is powered-down, the last stored
wiper counter position is maintained in the nonvolatile
memory. When power is restored, the contents of the
memory are recalled and the counter is set to the
value stored.
With ˉˉˉ set low, the CAT5111 may be de-selected
and powered down without storing the current wiper
position in nonvolatile memory. This allows the system
to always power up to a preset value stored in non-
volatile memory.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT5111LI-10MSOP | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer |
| CAT5111LI-10SOIC | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer |
| CAT5111LI-10TE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer |
| CAT5111LI-10TSSOP | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:100-Tap Digitally Programmable Potentiometer |
| CAT5111LI50 | 功能描述:數(shù)字電位計 IC DPP NV 100 taps Up/Down w/Buf 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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