MAX5422
PRODUCTION256-Tap, Nonvolatile, SPI-Interface, Digital Potentiometers
- Part Models
- 2
- 1ku List Price
- Starting From $2.19
Part Details
- Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled Upon Power-Up or Interface Command
- 3mm x 3mm x 0.8mm TDFN Package
- 35ppm/°C End-to-End Resistance Temperature Coefficient
- 5ppm/°C Ratiometric Temperature Coefficient
- 50kΩ, 100kΩ, and 200kΩ Resistor Values
- 5MHz SPI-Compatible Serial Interface
- 500nA (typ) Static Supply Current
- Single-Supply Operation: +2.7V to +5.25V
- 256 Tap Positions
- ±0.5 LSB DNL in Voltage-Divider Mode
- ±0.5 LSB INL in Voltage-Divider Mode
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.
Applications
- Audio Volume Control
- Liquid-Crystal Display (LCD) Contrast Control
- Low-Drift Programmable Filters
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacements
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 5
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX5422ETA+ | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX5422ETA+T | Thin Dual Flatpack No Leads, Exposed Pad |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Digital Potentiometers (DigiPOT) 6 | ||
| MAX5417 | PRODUCTION | 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
| MAX5418 | PRODUCTION | 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
| MAX5419 | PRODUCTION | 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
| MAX5477 | PRODUCTION | Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
| MAX5478 | PRODUCTION | Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
| MAX5479 | PRODUCTION | Dual, 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers |
Tools & Simulations
Software Development 1
Evaluation Kits
Evaluation Kit for the MAX5422, MAX5423, and MAX5424
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