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參數(shù)資料
| 型號(hào)： | CAT5116LITSSOP |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Log-Taper, 100-Tap Digitally Programmable Potentiometer |
| 中文描述： | 登錄錐，100抽頭數(shù)字可編程電位器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 93K |
| 代理商： | CAT5116LITSSOP |
CAT5116
6
Doc. No. 2118, Rev. J
AC Timing
CS
INC
U
/D
RW
t
CI
t
CYC
t
IL
MI(3)
90%
90%
10%
(store)
t
CPH
t
F
t
R
t
IW
tID
tDI
t
IH
t
IC
(1) Typical values are for T
A
=25
C and nominal supply voltage.
(2) This parameter is periodically sampled and not 100% tested.
(3) MI in the AC Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position.
DEVICE OPERATION
The CAT5116 operates like a digitally controlled
potentiometer with R
H
and R
L
equivalent to the high
and low terminals and R
W
equivalent to the mechanical
potentiometer's wiper. There are 100 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 is controlled by
three inputs,
INC
, U/
D
and
CS
. 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
CS
inputs.
With
CS
set LOW the CAT5116 is selected and will
respond to the U/
D
and
INC
inputs. HIGH to LOW
transitions on
INC
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
CS
transitions HIGH while the
INC
input is also HIGH. When
the CAT5116 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
INC
set low, the CAT5116 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 nonvolatile memory.
OPERATING MODES
Potentiometer
Equivalent Circuit
R
L
C
L
C
H
R
H
C
W
R
W
R
wi
X: High or Low
INCBB
High to Low
High to Low
High
Low
X
CSBB
Low
Low
Low to High
Low to High
High
U/DB
High
Low
X
X
X
Operation
Wiper Toward H
Wiper Toward L
Store Wiper Position
No Store, Return to Standby
Standby
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT5116PI | 功能描述:數(shù)字電位計(jì) IC 32kOhm 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 |
| CAT5116RI | 功能描述:數(shù)字電位計(jì) IC 32kOhm 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 |
| CAT5116SI | 功能描述:數(shù)字電位計(jì) IC 32kOhm 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 |
| CAT5116UI | 功能描述:數(shù)字電位計(jì) IC 32kOhm 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 |
| CAT5116VI | 功能描述:數(shù)字電位計(jì) IC 32kOhm 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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