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MAX5400
256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23
256-Tap Digital Potentiometers Offer the Ultimate Space Savings in an 8-Pin SOT23
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Key Features
Applications/Uses
Parametric specs for Digital Potentiometers
| Steps | 256 |
| # Potentiometers | 1 |
| Control Interface | 3-Wire Serial |
| Taper | Linear |
| Wiper Memory | Volatile |
| REND-TO-END (kΩ) | 50 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 50 |
| Wiper Resistance (Ω) (typ) | 250 |
| ICC @5V (µA) (max) | 5 |
| Package/Pins | SOT23/8 |
| Budgetary Price (See Notes) | 1.22 |
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Parameters
Parametric specs for Digital Potentiometers
| Steps | 256 |
| # Potentiometers | 1 |
| Control Interface | 3-Wire Serial |
| Taper | Linear |
| Wiper Memory | Volatile |
| REND-TO-END (kΩ) | 50 |
| Res. Tol. (%) | 25 |
| Temp. Coeff. (ppm/°C) (typ) | 50 |
| Wiper Resistance (Ω) (typ) | 250 |
| ICC @5V (µA) (max) | 5 |
| Package/Pins | SOT23/8 |
| Budgetary Price (See Notes) | 1.22 |
Key Features
- Miniature 8-Pin SOT23 (3mm x 3mm)
- 256 Tap Positions
- Ultra-Low 0.1µA Supply Current
- Single-Supply Operation: +2.7V to +5.5V
- Low Ratiometric Temperature Coefficient: 5ppm/°C
- Power-On Reset: Wiper Goes to Midscale (Position 128)
- Glitchless Switching Between the Resistor Taps
- 3-Wire SPI™-Interface Compatible
- 50kΩ/100kΩ Resistor Values
Applications/Uses
- Adjustable Voltage Reference
- Low-Drift Programmable-Gain Amplifiers
- Mechanical Potentiometer Replacements
Description
The MAX5400/MAX5401 digital potentiometers offer 256-tap SOT-PoT™ digitally controlled variable resistors in tiny 8-pin SOT23 packages. Each device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact. They 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 resistor taps, as well as a convenient power-on reset that sets the wiper to the midscale position at power-up. A low 5ppm/°C ratiometric temperature coefficient makes it ideal for applications requiring low drift.
The MAX5400/MAX5401 serve well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs). A nominal end-to-end resistor temperature coefficient of 50ppm/°C allows these parts to be used as variable resistors in applications such as low-tempco adjustable gain and other circuit configurations.
Two resistance values are available: 50kΩ (MAX5400) and 100kΩ (MAX5401). Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C).
The MAX5400/MAX5401 serve well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs). A nominal end-to-end resistor temperature coefficient of 50ppm/°C allows these parts to be used as variable resistors in applications such as low-tempco adjustable gain and other circuit configurations.
Two resistance values are available: 50kΩ (MAX5400) and 100kΩ (MAX5401). Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C).
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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