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| 型号： | MAX5402EUA |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC POT DIGITAL 256-TAP 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | µPoT |
| 接片： | 256 |
| 电阻（欧姆）： | 10k |
| 电路数： | 1 |
| 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： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
MAX5402
256-Tap, PoT, Low-Drift,
Digital Potentiometer
________________________________________________________________________________________
7
Applications Information
The MAX5402 is intended for a variety of circuits where
accurate, fine-tuned adjustable resistance is required,
such as in adjustable voltage or adjustable gain circuit
configurations. The MAX5402 is used in either a poten-
tiometer divider or a variable resistor configuration.
Adjustable Current to Voltage Converter
Figure 4 shows the MAX5402 used with a MAX4250
low-noise op amp to precisely tune a current-to-voltage
converter. Pins H and W of the MAX5402 are connect-
ed to the node between R3 and R2, and pin L is con-
nected to ground.
Adjustable Gain Amplifier
The MAX5402 is used again with the MAX4250 to make
a digitally adjustable gain circuit as shown in Figure 5.
The normal feedback resistor is replaced with the
MAX5402 in a variable resistor configuration, so that
the gain of the circuit can be digitally controlled.
Adjustable Voltage Reference
In Figure 6, the MAX5402 is shown with the MAX6160
to make an adjustable voltage reference. In this circuit,
the H pin of the MAX5402 is connected to the OUT pin
of the MAX6160, the L pin of the MAX5402 is connect-
ed to GND, and the W pin of the MAX5402 is connect-
ed to the ADJ pin of the MAX6160. The MAX5402
allows precise tuning of the voltage reference output. A
low 5ppm/°C ratiometric tempco allows a very stable
adjustable voltage overtemperature.
+5V
R3
VO / IS = R3(1 + R2 / R1) + R2
R2
R1
MAX4250
VO
W
H
L
MAX5402
Figure 4. I to V Converter
+5V
VS
VO
R2
VO / VS = 1 + R2 / R1
R1
W
H
L
MAX4250
MAX5402
Figure 5. Noninverting Amplifier
Data Word
B0 (D7)
B1 (D6)
B2 (D5)
B3 (D4)
B4 (D3)
B5 (D2)
B6 (D1)
B7 (D0)
(MSB)
First Bit In
(LSB)
Last Bit In
Figure 3. Serial Data Format
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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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