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Product Detailed Parameters
- Description：IC DGT POT 50KOHM 256TAP 14TSSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：2
- Number of Taps：256
- Resistance (Ohms)：50k
- Interface：SPI
- Memory Type：Non-Volatile
- Voltage - Supply：2.7V ~ 5.25V
- Features：-
- Tolerance：±25%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-TSSOP
- Package / Case：14-TSSOP (0.173", 4.40mm Width)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：325
- Grade：-
- Qualification：-
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Overview
The MAX5488EUD+T is a dual, linear-taper digital potentiometer featuring a 3-wire SPI-compatible interface and nonvolatile memory. It provides 256 tap positions with an end-to-end resistance of 50kΩ and a temperature coefficient of 35ppm/°C. Operating from a single +2.7V to +5.25V supply, it draws 400µA during write cycles and 1µA in standby. The device uses a 14-pin TSSOP package and operates within the -40°C to +85°C temperature range.
Feature Summary
- Dual-channel architecture with 256 programmable tap positions
- Nonvolatile EEPROM retains wiper position upon power-up or via command
- SPI-compatible serial interface for control
- Low power consumption: 400µA active, 1µA standby
Applications
- LCD screen adjustment
- Audio volume control
- Mechanical potentiometer replacement
- Low-drift programmable filters
- Programmable-gain amplifiers
Procurement Notes
Verify the component against official Maxim Integrated datasheets to confirm specifications. Ensure the ordering suffix matches the required package type (TSSOP) and RoHS compliance status. Cross-reference part numbers with authorized distributors to validate authenticity and availability.
Selection Notes
Select this model when a dual-channel digital potentiometer with 50kΩ resistance is required. Verify that the system supports a 3-wire SPI interface and operates within the specified voltage range. Consider the 256-tap resolution and nonvolatile storage capabilities for applications requiring persistent settings.
Part Context
This component belongs to the MAX5487/MAX5488/MAX5489 family of dual, nonvolatile digital potentiometers. The MAX5488 variant specifically offers a 50kΩ end-to-end resistance, distinguishing it from the 10kΩ MAX5487 and 100kΩ MAX5489 models.
Replacement Considerations
Direct substitutes include the MAX5487EUD+T (10kΩ) and MAX5489EUD+T (100kΩ). These share identical pinouts, interfaces, and features but differ in resistance values. Verify resistance requirements before substitution.
FAQ
How does the device handle wiper position after power loss?
The internal EEPROM stores the wiper position prior to power-down. Upon power-up, the device automatically recalls and restores the wipers to their previously stored positions.
What is the maximum clock frequency for the serial interface?
The SCLK frequency can reach up to 5 MHz, allowing for fast data transfer during programming operations.
What is the guaranteed endurance of the nonvolatile memory?
The nonvolatile memory is guaranteed for 200,000 wiper store cycles at +25°C and 50,000 cycles at +85°C, with a data retention period of 50 years.
