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Product Detailed Parameters
- Description：IC DGTL POT 10KOHM 32TAP 16QSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Taper：Logarithmic
- Configuration：Potentiometer
- Number of Circuits：2
- Number of Taps：32
- Resistance (Ohms)：10k
- Interface：SPI
- Memory Type：Volatile
- Voltage - Supply：2.7V ~ 3.6V
- Features：Mute, Zero-Cross Sense
- Tolerance：±30%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：16-QSOP
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：1000
- Grade：-
- Qualification：-
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Overview
The MAX5408EEE+T is a dual, logarithmic taper digital potentiometer IC from Analog Devices/Maxim Integrated. It features two independent 10kΩ resistive elements with 32 tap positions each and one wiper per potentiometer. The device operates on a single supply voltage of +2.7V to +3.6V and includes an SPI-compatible 3-wire serial interface for control. Key electrical characteristics include a nominal end-to-end resistance temperature coefficient of 35ppm/°C, a standby supply current of 0.5µA typical, and a mute function providing -90dB attenuation. It is housed in a 16-pin QSOP package and specified for operation over the extended temperature range of -40°C to +85°C.
Feature Summary
- Dual logarithmic taper digital potentiometers with 32-tap positions and 10kΩ fixed resistance
- SPI-compatible 3-wire serial interface with readback capabilities
- Zero-crossing detection feature minimizes audible noise during wiper transitions
- Mute function achieves -90dB attenuation with power-on reset to maximum attenuation
Applications
- Stereo volume control
- Fading and balancing stereo signals
- Mechanical potentiometer replacement in audio circuits
Procurement Notes
Verify the 'T' suffix indicates tape-and-reel packaging when sourcing this specific part number. Confirm the manufacturer is Analog Devices Inc. or Maxim Integrated. Ensure the component matches the 16-pin QSOP package outline and operates within the 2.7V to 3.6V supply range.
Selection Notes
Select the MAX5408EEE+T for applications requiring dual channels with a single wiper per channel. Choose this model over the MAX5409 if only one wiper per resistor is needed. Ensure the system logic voltage supports the SPI interface requirements and that the 10kΩ resistance value fits the circuit design constraints.
Part Context
This component belongs to the MAX5408–MAX5411 family of dual, audio, log taper digital potentiometers. The MAX5408 variant specifically provides one wiper per potentiometer, distinguishing it from the MAX5409 which offers two wipers per resistor. Both share the same package options and core functionality.
Replacement Considerations
The MAX5410 serves as a functional equivalent but requires a higher supply voltage range of +4.5V to +5.5V instead of the MAX5408's +2.7V to +3.6V. Verify voltage compatibility before substitution.
FAQ
What is the purpose of the zero-crossing detection feature?
It minimizes audible noise (clicks and pops) generated by wiper transitions by changing the wiper position only when the voltage at the low terminal equals the voltage at the high terminal.
How does the power-on reset function behave?
Upon power-up, all wipers are set to the maximum attenuation position, which corresponds to tap position 31 (-62dB).
What is the attenuation level when the mute function is enabled?
When mute is enabled, the wipers go to -90dB attenuation.
