參數(shù)資料
型號(hào)： MAX5481
廠商： Maxim Integrated Products, Inc.
元件分類(lèi)： 通用總線功能
英文描述： Audio digital potentiometers
中文描述： 音頻數(shù)字電位器
文件頁(yè)數(shù)： 17/21頁(yè)
文件大?。?/td> 1241K
代理商： MAX5481
M
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
______________________________________________________________________________________
17
Standby Mode
The MAX5481–MAX5484 feature a low-power standby
mode. When the device is not being programmed, it
enters into standby mode and supply current drops to
0.5μA (typ).
Nonvolatile Memory
The internal EEPROM consists of a nonvolatile register
that retains the last value stored prior to power-down.
The nonvolatile register is programmed to midscale at
the factory. The nonvolatile memory is guaranteed for
50 years of wiper data retention and up to 200,000
wiper write cycles.
Power-Up
Upon power-up, the MAX5481–MAX5484 load the data
stored in the nonvolatile wiper register into the volatile
wiper register, updating the wiper position with the data
stored in the nonvolatile wiper register.
Applications Information
The MAX5481–MAX5484 are ideal for circuits requiring
digitally controlled adjustable resistance, such as LCD
contrast control (where voltage biasing adjusts the dis-
play contrast), or programmable filters with adjustable
gain and/or cutoff frequency.
Positive LCD Bias Control
Figures 9 and 10 show an application where a voltage-
divider or a variable resistor is used to make an
adjustable, positive LCD-bias voltage. The op amp pro-
vides buffering and gain to the voltage-divider network
made by the programmable voltage-divider (Figure 9) or
to a fixed resistor and a variable resistor (see Figure 10).
Programmable Gain and Offset Adjustment
Figure 11 shows an application where a voltage-divider
and a variable resistor are used to make a programma-
ble gain and offset adjustment.
CS
SCLK(INC)
DIN(U/D)
V
W
t
S
t
ID
t
DI
t
IH
t
IL
t
CYC
t
CI
t
IC
t
CPH
t
WSC
t
IK
WIPER POSITION
NOT STORED
WIPER POSITION
STORED
NOTES:
V
IS NOT A DIGITAL SIGNAL. IT REPRESENTS A WIPER TRANSITION.
SCLK(INC) MUST BE AT LOGIC HIGH WHEN DIN(U/D) CHANGES STATE.
Figure 8. Up/Down Serial-Interface Timing Diagram (SPI/
UD
= 0)
相關(guān)PDF資料
PDF描述
MAX5481ETE Audio digital potentiometers
MAX5481EUD Audio digital potentiometers
MAX5484 Audio digital potentiometers
MAX548AEPA +2.5V to +5.5V, Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in レMAX Package
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5481ETE 功能描述:數(shù)字電位計(jì) IC 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
MAX5481ETE/GG8 制造商:Maxim Integrated Products 功能描述:
MAX5481ETE/GH9-T 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
MAX5481ETE+ 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-Taper 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
MAX5481ETE+T 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-Taper 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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