The MAX5422/MAX5423/MAX5424 nonvolatile, lineartaper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 3-wire SPI™-compatible digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 5MHz, minimizing board space and reducing interconnection complexity in many applications. The MAX5422/MAX5423/MAX5424 provide three nominal resistance values: 50kΩ (MAX5422), 100kΩ (MAX5423), or 200kΩ (MAX5424). The nominal resistor temperature coefficient is 35ppm/°C end-to-end and only 5ppm/°C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gainamplifier circuit configurations. The MAX5422/MAX5423/MAX5424 are available in a 3mm x 3mm 8-pin TDFN package, and are specified over the extended -40°C to +85°C temperature range.
title | Download file |
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MAX5422-MAX5424 Data Sheet | MAX5422-MAX5424.pdf |
Part Number | Taper | POTs | Control Interface | Wiper Memory | Steps | REND-TO-END (kΩ) | Res. Tol. (%) | Temp. Coeff. (ppm/°C) | Wiper Resistance (Ω) | ICC @5V (µA) | Package/Pins | Budgetary Price |
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typ | typ | max | See Notes | |||||||||
MAX5422 | Linear | 1 | 3-Wire Serial SPI | Non-Volatile | 256 | 50 | 25 | 50 | 325 | 1 | TDFN-EP/8 | $1.51 @1k |
MAX5423 | 100 | TDFN-EP/8 | ||||||||||
MAX5424 | 200 | TDFN-EP/8 | ||||||||||
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
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MAX5424ETA | No Longer Available | MAX5424ETA+ | TDFN-EP,;8 pin;9.6 mm² | -40°C to +85°C | No |
MAX5424ETA+ | Active | TDFN-EP,;8 pin;9.6 mm² | -40°C to +85°C | Lead Free | |
MAX5424ETA+T | Active | TDFN-EP,;8 pin;9.6 mm² | -40°C to +85°C | Lead Free | |
MAX5424ETA-T | No Longer Available | MAX5424ETA+T | TDFN-EP,;8 pin;9.6 mm² | -40°C to +85°C | No |