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Product Detailed Parameters
- Description：MAX5428 ONE-TIME PROGRAMMABLE, L
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：32
- Resistance (Ohms)：50k
- Interface：I2C, Up/Down (U/D, CS)
- Memory Type：-
- Voltage - Supply：2.7V ~ 5.5V
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：8-QFN-EP (3x3)
- Package / Case：8-VDFN Exposed Pad
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：100
- Grade：-
- Qualification：-
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Overview
The MAX5428EGA is a single-channel digital potentiometer IC manufactured by Analog Devices Inc./Maxim Integrated. It features a 50 kOhm resistance value with 32 taps and utilizes a linear taper profile. The device employs a non-volatile memory architecture, retaining the wiper setting upon power loss. Communication is handled via a serial 2-wire interface. It operates within a supply voltage range of 2.7 V to 5.5 V and draws a typical operating current of 1.5 uA. The component is housed in an 8-lead TDFN package with an exposed pad (TDFN-8 EP) and supports surface mount installation.
Feature Summary
- Non-volatile memory retains wiper position after power cycles
- Serial 2-wire interface for control
- Linear taper with 32 adjustable taps
- Low power consumption of 1.5 uA
Applications
- Programmable gain amplifiers
- Voltage reference adjustment
- Sensor biasing networks
Procurement Notes
Verify the specific suffix 'EGA' against official manufacturer documentation, as standard listings often use 'ETA'. Confirm availability status, as some variants may be discontinued or have limited stock. Ensure the 8-TDFN package matches the PCB footprint requirements. Check RoHS compliance details directly from the datasheet.
Selection Notes
Select this component when a compact, low-power digital potentiometer with persistent settings is required. The 50 kOhm resistance and 32-tap resolution suit applications needing moderate precision. Ensure the design supports the 2-wire serial protocol. Verify that the 2.7 V to 5.5 V supply range aligns with the system voltage rails.
Part Context
The MAX5428 belongs to the Maxim Integrated digital potentiometer family, designed for replacing mechanical potentiometers in space-constrained designs. It offers non-volatile storage to eliminate initialization sequences. The EGA suffix denotes a specific package and temperature grade variant within the MAX5428 series, distinct from other tape-and-reel options like ETA+T.
Replacement Considerations
Cross-reference with MAX5428ETA+T for functional equivalence if pinout and specifications match. Verify package dimensions for TDFN-8 compatibility. Check if alternative suppliers offer the exact EGA suffix variant.
