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| 型号： | MAX5128ELA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/14页 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL LP 128TAP 8-UDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 接片： | 128 |
| 电阻（欧姆）： | 22k |
| 电路数： | 1 |
| 温度系数： | 标准值 50 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 上/下 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN |
| 供应商设备封装： | 8-uDFN（2x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 1398 (CN2011-ZH PDF) |
| 其它名称： | MAX5128ELA+TDKR |
Digital Interface
The MAX5128 features a 2-wire interface consisting of
two logic inputs (UP and DN). Logic inputs UP and DN
control the wiper position and program the position to
the nonvolatile memory. Transition UP from high to low
with DN low to increment the wiper position. Transition
DN from high to low with UP low to decrement the wiper
position (see Figures 1, 2, and 3). When the wiper decre-
ments, it decreases the resistance between W and L
(and it increases the resistance between H and W).
To program the nonvolatile memory, force UP high,
then force DN high, and then transition either input
(UP/DN) from high to low (see Figure 3).
The wiper performs a make-before-break transition,
ensuring that an open circuit during a transition from
one resistor tap to another does not occur. The wiper
does not wrap around when it reaches either end of the
resistor array (max/min). Additional transition com-
mands in the direction of the end point do not change
the tap position.
The logic inputs also feature pulse glitch immunity
(20ns) to protect the wiper from transitioning due to
glitches (see Figure 4).
Write NV Register
The internal EEPROM consists of a 7-bit nonvolatile
memory that retains the value written to it even after
power-down. To program the nonvolatile memory, force
UP high, then force DN high, and then transition either
input (UP/DN) from high to low. A nonvolatile write
requires a busy time of 14ms (max). During the busy
time, any nonvolatile write requests are ignored as well
as requests to increment or decrement the wiper posi-
tion. Upon power-up, the wiper returns to the position
stored in the nonvolatile register. The MAX5128 fea-
tures a factory-default wiper position of midscale.
MAX5128
128-Tap, Nonvolatile, Linear-Taper Digital
Potentiometer in 2mm x 2mm DFN Package
_______________________________________________________________________________________
9
tPWH
tPWL
tMS2
tBUSY
UP
DN
tWS
tWH
tWP
NVM
WRITE
Figure 2. Digital-Interface Timing Diagram with tBUSY
UP
DN
WIPER
INCREMENTS
NVM
WRITE
tBUSY
WIPER
DECREMENTS
NVM
WRITE
WIPER
INCREMENTS
WIPER
DECREMENTS
Figure 3. Digital-Interface Command Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5128EVCMAXQU+ | 功能描述:数字电位计 IC MAX5128 Evaluation Kit/Evaluation System RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5128EVKIT+ | 功能描述:数字电位计 IC MAX5128 Evaluation Kit/Evaluation System RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX512C/D | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface |
| MAX512CPD | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX512CPD+ | 功能描述:数模转换器- DAC 8-Bit 3Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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