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Product Detailed Parameters
- Description：IC DGT POT 10KOHM 256TAP 14TSSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：2
- Number of Taps：256
- Resistance (Ohms)：10k
- Interface：SPI
- Memory Type：Volatile
- Voltage - Supply：1.7V ~ 5.5V
- 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 ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：200 (Max)
- Grade：-
- Qualification：-
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Overview
The MAX5393LAUD+ is a dual 256-tap volatile linear taper digital potentiometer in a 14-pin TSSOP package. It operates from a single +1.7V to +5.5V supply with a low 12µA quiescent current. The device features an SPI-compatible interface and offers end-to-end resistance values of 10kΩ, 50kΩ, or 100kΩ. It includes an internal charge pump ensuring wiper resistance remains below 200Ω at minimum voltage. Specified over the -40°C to +125°C automotive temperature range, it sets wipers to midscale on power-up.
Feature Summary
- Dual 256-Tap Linear Taper Positions
- Single +1.7V to +5.5V Supply Operation
- Low 12µA Quiescent Supply Current
- SPI-Compatible Interface
Applications
- Low-Voltage Battery Applications
- Portable Electronics
- Mechanical Potentiometer Replacement
- Offset and Gain Control
- Adjustable Voltage References/Linear Regulators
Procurement Notes
Verify the specific suffix 'AUD+' indicates the lead-free/RoHS-compliant version in the 14-pin TSSOP package. Confirm the required end-to-end resistance value (10kΩ, 50kΩ, or 100kΩ) matches the design needs, as these are distinguished by different part numbers within the MAX5393 series.
Selection Notes
Select based on the required end-to-end resistance: MAX5393LAUD+ for 10kΩ, MAX5393MAUD+ for 50kΩ, and MAX5393NAUD+ for 100kΩ. Ensure the application supports volatile memory behavior, as settings are lost upon power loss. Verify that the SPI interface timing requirements align with the host controller's capabilities.
Part Context
This component belongs to the MAX5391/MAX5393 family of dual digital potentiometers. While the MAX5391 utilizes a 16-pin TQFN-EP package, the MAX5393 variant specifically uses a 14-pin TSSOP package. Both share identical electrical characteristics and functionality but differ only in physical footprint.
Replacement Considerations
Direct pin-compatible replacements include MAX5393MAUD+ (50kΩ) and MAX5393NAUD+ (100kΩ). Other families like the MAX5481 or MAX5482 offer similar functionality but may require schematic adjustments due to differences in interface protocols or package types.
FAQ
What happens to the wiper position during power-up?
The power-on reset (POR) circuitry automatically sets both wipers to the midscale position (code 80h).
How does the device maintain low wiper resistance at low voltages?
An internal charge pump ensures the maximum wiper resistance (R_WL) remains less than 200Ω even when the supply voltage is as low as 1.7V.
Is the data stored in the device non-volatile?
No, the MAX5393LAUD+ is a volatile digital potentiometer. All wiper settings are lost when the power supply is removed.
