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参数资料
| 型号： | MAX5402 |
| 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： | 256抽头、µPoT™、低漂移数字电位器 |
| 文件页数： | 7/9页 |
| 文件大小： | 208K |
| 代理商： | MAX5402 |
M
256-Tap, μPoT, 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
V
O
/ I
S
= R
3
(1 + R
2
/ R
1
) + R
2
R2
R1
MAX4250
V
O
W
H
L
MAX5402
Figure 4. I to V Converter
+5V
V
S
V
O
R2
V
O
/ V
S
= 1 + R
2
/ R
1
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
相关PDF资料 |
PDF描述 |
|---|---|
| MAX5402EUA | 256-Tap, レPoT, Low-Drift, Digital Potentiometer |
| MAX5406 | Audio Processor with Pushbutton Interface |
| MAX5406ETM | Audio Processor with Pushbutton Interface |
| MAX5406EUM | Audio Processor with Pushbutton Interface |
| MAX5422 | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5402EUA | 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 |
| 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 |
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