Overview
Features and Benefits
- Miniature 3mm x 3mm 8-Pin SOT23 Package
- Logarithmic Taper with 1dB Steps Between Taps
- 32 Tap Positions
- Low 0.35µA Supply Current
- +2.7V to +5.5V Single-Supply Operation
- Zero-Crossing Detection to Minimize Audible Clicks During Wiper Transitions
- Simple Up/Down 2-Wire Serial Data Interface
- Power-On Reset
- Wiper Goes to Maximum Attenuation (Lowest Tap Position)
- 20kΩ End-to-End Resistance
Product Details
The MAX5407 SOT-PoT™ is a logarithmic taper digital potentiometer with 32 tap points that has 1dB steps between taps. This device is ideal for audio applications, such as volume control and fading/balancing audio signals.
The MAX5407 consists of a resistor string and CMOS switches that are digitally controlled through a simple 2-wire serial interface. This device performs the same function as a mechanical potentiometer. The device has a fixed end-to-end resistance of 20kΩ and features zero-crossing detection to minimize the audible noise generated by the wiper transitions.
This device has nominal resistor temperature coefficients of 35ppm/°C end-to-end and 5ppm/°C ratiometric. The MAX5407 is available in a space saving 8-pin SOT23 package and is guaranteed from -40°C to +85°C.
Applications
- Audio Volume Control
- Fading/Balancing Audio Signals
- Mechanical Potentiometer Replacements
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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MAX5407 Reliability Data1/12/2023PDF158K
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A Power Engineer: the Super Hero in a Design?11/26/2012
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Audio Gain Control Using Digital Potentiometers12/26/2002
Design Resources
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.
PCN-PDN Information
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