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参数资料
| 型号： | MAX5388MAUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 256POS 50K 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 2 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | 3 线串行（芯片选择） |
| 电源电压： | 2.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
MAX5386/MAX5388
8 ______________________________________________________________________________________
Detailed Description
The MAX5386/MAX5388 dual, 256-tap, volatile low-volt-
age linear taper digital potentiometers offer three end-to-
end resistance values of 10kI, 50kI, and 100kI. Each
potentiometer consists of 255 fixed resistors in series
between terminals H and L. The potentiometer wiper, W,
is programmable to access anyone of the 256 tap points
on the resistor string.
The potentiometers in each device are programmable
independently of each other. The MAX5386/MAX5388
have an SPI interface.
SPI Digital Interface
The MAX5386/MAX5388 include an SPI interface, which
provides a 3-wire write-only serial data interface to con-
trol the wiper tap position through inputs chip select
(CS), data in (DIN), and data clock (SCLK). Drive CS
low to load data from DIN synchronously into the serial
shift register on the rising edge of each SCLK pulse.
The MAX5386/MAX5388 load the last 9 bits of clocked
data once CS transitions high. See Figures 2 and 3.
After all the data bits are shifted in, data are latched into
the appropriate potentiometer control register when CS
goes from low to high. Data written to a memory register
immediately updates the wiper position. Keep CS low
during the entire data stream to prevent the data from
being terminated.
The first bit A0 (address bit) addresses one of the two
potentiometers; writing a zero in A0 addresses control
register A and writing a one in A0 addresses control reg-
ister B. See Table 1. The power-on reset (POR) circuitry
sets the wiper to midscale (D[7:0] 1000 0000).
The 8 data bits (D7–D0) indicate the position of the
wiper. For D[7:0] = 0000 0000, the wiper moves to the
position closest to L. For D[7:0] = 1111 1111, the wiper
moves closest to H. D[7:0] is 1000 0000 following power-
on for both registers A and B.
Register A: The data byte writes to register A, and the
wiper of potentiometer A moves to the appropriate posi-
tion at the rising edge of CS. D[7:0] indicates the posi-
tion of the wiper. D[7:0] = 0000 0000 moves the wiper to
the position closest to L. D[7:0] = 1111 1111 moves the
wiper to the position closest to H. D[7:0] is 1000 0000
following power-on.
Register B: The data byte writes to register B, and the
wiper of potentiometer B moves to the appropriate posi-
tion at the rising edge of CS. D[7:0] indicates the posi-
tion of the wiper. D[7:0] = 0000 0000 moves the wiper to
the position closest to L. D[7:0] = 1111 1111 moves the
wiper to the position closest to H. D[7:0] is 1000 0000
following power-on.
Table 1. SPI Register Map
Bit Number
1
2
3
4
5
6
7
8
9
Bit Name
A0
D7
D6
D5
D4
D3
D2
D1
D0
Write Wiper Register A
0
D7
D6
D5
D4
D3
D2
D1
D0
Write Wiper Register B
1
D7
D6
D5
D4
D3
D2
D1
D0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5388MAUB+ | 功能描述:数字电位计 IC Dl 256-Tap Volatile Linear Taper 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 |
| MAX5388MAUB+T | 功能描述:数字电位计 IC Dl 256-Tap Volatile Linear Taper 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 |
| MAX5388NAUB+ | 功能描述:数字电位计 IC Dl 256-Tap Volatile Linear Taper 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 |
| MAX5388NAUB+T | 功能描述:数字电位计 IC Dl 256-Tap Volatile Linear Taper 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 |
| MAX5389EVKIT+ | 功能描述:数字电位计 IC MAX5389 Eval Kit 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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