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MAX5405：双路、256抽头、低漂移、数字电位器，10引脚µMAX封装

业内尺寸最小的双通道数字电位器

The MAX5403/MAX5404/MAX5405 is a family of dual linear taper digital potentiometers. Each device has one 3-terminal potentiometer and one 2-terminal variable resistor (Figure 1). The MAX5403/MAX5404/MAX5405 operate from +2.7V to +5.5V single-supply voltages and use an ultra-low supply current of 0.1µA. These devices also provide glitchless switching between resistors taps as well as a convenient power-on reset (POR) that sets the wiper to the midscale position at power-up. The potentiometer consists of a fixed resistor with a wiper contact that is digitally controlled through a 3-wire serial interface and has 256-tap points. It performs the same function as a discrete potentiometer or variable resistor. These parts are ideal for applications requiring digitally controlled resistors. Three resistance values are available: 10kΩ (MAX5403), 50kΩ (MAX5404), and 100kΩ (MAX5405). A nominal resistor-temperature coefficient of 35ppm/°C end-to-end and 5ppm/°C ratiometric make the MAX5403/MAX5404/MAX5405 ideal for applications requiring low temperature-coefficient variable resistors, such as adjustable-gain circuit configurations. The MAX5403/MAX5404/MAX5405 are available in a 10-pin µMAX® package. Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C).

关键特性 10-Pin µMAX Small Footprint Package 256-Tap Positions Ultra Low 0.1µA Supply Current +2.7V to +5.5V Single-Supply Operation Low End-To-End Temperature Coefficient: 35ppm/°C Low Ratiometric Temperature Coefficient: 5ppm/°C Power-On Reset: Wiper Goes to Midscale (Position 128) Glitchless Switching Between Resistor Taps 3-Wire SPI™-Interface Compatible 10kΩ/50kΩ/100kΩ Resistor Values

MAX5403、MAX5404、MAX5405：功能框图 应用 可调节电压基准 阻抗匹配 LCD屏调节 低失调可编程增益放大器(PGA) 替代机械电位器 可编程滤波器、延时、时间常数 音量控制

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关键参数

技术资料

• Pots, Pans, Logs, and Linear Digital Pots Create Arbitrary Voltage Curves

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