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Product Detailed Parameters
- Description：IC DGTL POT 100KOHM 32TAP 8UMAX
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：32
- Resistance (Ohms)：100k
- Interface：Up/Down (U/D, CS)
- Memory Type：Non-Volatile
- Voltage - Supply：2.7V ~ 5.5V
- Features：-
- Tolerance：±25%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：8-uMAX/uSOP
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：100
- Grade：-
- Qualification：-
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Overview
The MAX5427EUA+ is a linear-taper digital potentiometer with an end-to-end resistance of 100kΩ and 32 tap positions. It operates on a single 2.7V to 5.5V supply with a maximum static current of 1.5µA. The device features a one-time programmable (OTP) function that allows setting the power-on reset wiper position or permanently locking the interface. It utilizes a simple 2-wire serial interface for control and is housed in an 8-pin µMAX package, rated for operation from -40°C to +85°C.
Feature Summary
- One-Time Programmable (OTP) memory for user-defined power-on reset position or permanent interface lockout
- Linear taper with 32 tap positions and 100kΩ end-to-end resistance
- Ultra-low 1.5µA maximum static supply current
- Simple 2-wire serial interface (CS, U/D) for wiper adjustment
Applications
- Mechanical potentiometer replacement
- Products requiring one-time factory calibration
- Fixed resistor-divider applications after OTP lockout
Procurement Notes
Verify the component is the lead-free MAX5427EUA+ variant. Confirm the package is the 8-pin µMAX format. Check datasheet specifications for VPP programming requirements if OTP functionality is utilized. Ensure compatibility with the 2.7V to 5.5V supply range.
Selection Notes
Select this model for applications requiring a 100kΩ digital potentiometer with non-volatile power-on state retention. The MAX5427 offers 32 taps; consider the MAX5428 (50kΩ) or MAX5429 (10kΩ) if different resistance values are needed. The OTP feature is suitable for fixed calibration scenarios where post-production adjustment must be prevented.
Part Context
The MAX5427 is part of the MAX5427/MAX5428/MAX5429 family of one-time programmable, linear-taper digital potentiometers. These devices replace mechanical potentiometers using a digital interface. The family shares identical pinouts and operational characteristics, differing only in end-to-end resistance values.
Replacement Considerations
Direct replacements within the same family include the MAX5427ETA (Thin QFN-EP package). Other models like the MAX5428 or MAX5429 have different resistance values and may not be electrically equivalent without circuit modification.
