• 简体中文
• English

MAX5405：Dual, 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX

Industry's Smallest Dual Digital Potentiometer

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).

Key Features 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: Functional Diagram Applications/Uses Adjustable Voltage Reference Impedance Matching LCD Screen Adjustment Low-Drift Programmable Gain Amplifier (PGA) Mechanical Potentiometer Replacement Programmable Filters, Delays, Time Constant Volume Control

DataSheet

Parametrics

Related Products

• MAX5414：Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP
• MAX5415：Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP
• MAX5413：Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP

Ordering Information