MAX5391
Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers
Industry's First 1.7V Supply, 256-Step Dual Digital Potentiometers
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Key Features
Applications/Uses
| Steps | 256 |
| # Potentiometers | 2 |
| Control Interface | 3-Wire Serial SPI |
| Taper | Linear |
| Wiper Memory | Volatile |
| REND-TO-END (kΩ) | 10 50 100 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 35 |
| Wiper Resistance (Ω) (typ) | 200 |
| ICC @5V (µA) (max) | 27 |
| Package/Pins | TQFN/16 |
| Budgetary Price (See Notes) | 1.45 |
Simplified Block Diagram
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Parameters
| Steps | 256 |
| # Potentiometers | 2 |
| Control Interface | 3-Wire Serial SPI |
| Taper | Linear |
| Wiper Memory | Volatile |
| REND-TO-END (kΩ) | 10 50 100 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 35 |
| Wiper Resistance (Ω) (typ) | 200 |
| ICC @5V (µA) (max) | 27 |
| Package/Pins | TQFN/16 |
| Budgetary Price (See Notes) | 1.45 |
Key Features
- Dual, 256-Tap Linear Taper Positions
- Single +1.7V to +5.5V Supply Operation
- Low 12µA Quiescent Supply Current
- 10kΩ, 50kΩ, and 100kΩ End-to-End Resistance Values
- SPI-Compatible Interface
- Wiper Set to Midscale on Power-Up
- -40°C to +125°C Operating Temperature Range
Applications/Uses
- Adjustable Voltage References/Linear Regulators
- Low-Voltage Battery Applications
- Mechanical Potentiometer Replacement
- Offset and Gain Control
- Portable Electronics
Description
The MAX5391/MAX5393 dual 256-tap, volatile, low-voltage linear taper digital potentiometers offer three end-to-end resistance values of 10kΩ, 50kΩ, and 100kΩ. Operating from a single +1.7V to +5.5V power supply, these devices provide a low 35ppm/°C end-to-end temperature coefficient. The devices feature an SPI interface.
The small package size, low supply voltage, low supply current, and automotive temperature range of the MAX5391/MAX5393 make the devices uniquely suitable for the portable consumer market and battery backup industrial applications.
The MAX5391/MAX5393 include two digital potentiometers in a voltage-divider configuration. The MAX5391/MAX5393 are specified over the -40°C to +125°C automotive temperature range and are available in a 16-pin, 3mm x 3mm TQFN and a 14-pin TSSOP package, respectively.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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