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参数资料
| 型号： | MAX5402EUA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 数字电位计 |
| 英文描述： | 256-Tap, レPoT, Low-Drift, Digital Potentiometer |
| 中文描述： | 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO8 |
| 封装： | MICRO MAX PACKAGE-8 |
| 文件页数： | 6/9页 |
| 文件大小： | 208K |
| 代理商： | MAX5402EUA |
M
256-Tap, μPoT, Low-Drift,
Digital Potentiometer
6
_______________________________________________________________________________________
Detailed Description
The MAX5402 consists of 255 fixed resistors in series
between pins H and L. The potentiometer wiper (pin W)
can be programmed to access any one of the 256 dif-
ferent tap points on the resistor string. The MAX5402
has an SPI-compatible 3-wire serial data interface to
control the wiper tap position. This write-only interface
contains three inputs: Chip Select (
CS
), Data In (DIN),
and Data Clock (SCLK). When
CS
is taken low, data
from the DIN pin is synchronously loaded into the 8-bit
serial shift register on the rising edge of each SCLK
pulse (Figure 1). The MSB is shifted in first, as shown in
Figure 3. Note that if
CS
is not kept low during the entire
data stream, the data will be corrupted and the device
will need to be reloaded. After all 8 data bits have been
loaded into the shift register, they are latched into the
decoder once
CS
is taken high. The decoder switches
the potentiometer wiper to the tap position that corre-
sponds to the 8-bit input data. Each resistor cell is
10k
/255 or 39.2
for the MAX5402.
The MAX5402 features POR circuitry. This sets the
wiper to the midscale position at power-up by loading a
binary value of 128 into the 8-bit latch. The MAX5402
can be used as a variable resistor by connecting pin W
to either pin H or L.
POT REGISTER LOADED
1ST CLOCK PULSE
SCLK
DIN
MSB
LSB
D0
D1
D2
D3
D4
D5
D6
D7
8TH CLOCK PULSE
TIME
CS
Figure 1. Serial Interface Timing Diagram
SCLK
DIN
t
CSO
t
CSS
t
CH
t
CL
t
DS
t
DH
t
CP
t
CSH
t
CS1
t
CSW
CS
Figure 2. Detailed Serial Interface Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5402EUA/GG8 | 制造商:Maxim Integrated Products 功能描述:256-TAP UPOT LOW DRIFT DIGITAL POTENTIOMETER. - Rail/Tube |
| MAX5402EUA+ | 功能描述:数字电位计 IC 256-Tap Low-Drift 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 |
| MAX5402EUA+T | 功能描述:数字电位计 IC 256-Tap Low-Drift 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 |
| MAX5402EUA-T | 功能描述:数字电位计 IC 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 |
| MAX5403EUB | 功能描述:数字电位计 IC 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 |
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