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Product Detailed Parameters
- Description：IC DGT POT 100KOHM 32TAP SOT23-8
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：32
- Resistance (Ohms)：125k
- Interface：Up/Down (U/D, CS)
- Memory Type：Non-Volatile
- Voltage - Supply：2.7V ~ 5.25V
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-8
- Package / Case：SOT-23-8
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：600
- Grade：-
- Qualification：-
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Overview
The MAX5475EKA+T is a single-channel, nonvolatile linear-taper digital potentiometer featuring 32 wiper positions and a 100kΩ end-to-end resistance. It operates on a single supply voltage ranging from +2.7V to +5.25V with a maximum static supply current of 1µA. The device utilizes a simple 3-wire up/down digital interface (CS, U/D, INC) for control. Nonvolatile EEPROM memory retains the wiper position upon power-up, ensuring data retention for 50 years at +85°C and endurance of 200,000 store cycles. It is housed in an 8-pin SOT-23 package.
Feature Summary
- Nonvolatile EEPROM storage recalls wiper position automatically upon power-up
- 3-wire serial interface (CS, U/D, INC) for digital control
- Low static supply current of 1µA maximum in standby mode
- Linear taper with 32 tap positions and 100kΩ nominal resistance
Applications
- Mechanical potentiometer replacement
- Liquid-Crystal-Display (LCD) screen adjustment
- Audio volume control
- Programmable filters
Procurement Notes
Verify the component marking 'AEIY' on the top surface to confirm the specific part number. Ensure the ordering suffix '+T' matches the required reel packaging configuration. Confirm RoHS compliance status as indicated by the '+' suffix in the manufacturer's documentation before finalizing procurement.
Selection Notes
Select this model when a 100kΩ variable resistor or voltage divider is required. The 8-pin SOT-23 package provides access to High, Low, and Wiper terminals, suitable for voltage-divider configurations unlike the 6-pin variants. Verify that the system supply voltage falls within the 2.7V to 5.25V range and that the 3-wire interface logic levels are compatible.
Part Context
This component belongs to the MAX547x family of 32-tap nonvolatile digital potentiometers. It shares functional similarities with the MAX5471, MAX5472, and MAX5474 but is distinguished by its 100kΩ resistance value and 8-pin SOT-23 package format. The family utilizes BiCMOS process technology and contains 5031 transistors.
Replacement Considerations
MAX5475EKA+T
FAQ
How is the wiper position stored in nonvolatile memory?
The wiper position is stored when the Chip Select (CS) input transitions from low to high while the Increment (INC) input is high.
What is the behavior of the wiper during power-up?
Upon power-up, the wiper automatically returns to the previously stored position retained in the nonvolatile memory.
Can the device be used as a one-time programmable (OTP) component?
Yes, by connecting CS to VDD and INC to GND after storing the desired position, the interface is disabled, fixing the wiper position permanently.
