Universal 3.5mmØ Accessory Management IC

A Universal Jack Interface Solution with Wide the Power Management and Interface Control of Accessory

Please check latest availability status for a specific part variant.


The MAX20317 is an I2C controllable, universal 3.5mmØ accessory management IC. The device provides a universal jack interface solution, as well as a compact solution for the power management and interface control of a powered accessory, such as an active noise cancelling (ANC) headset.

The MAX20317 automatically measures headset impedance with a high precision, triple current source 8 bit ADC. After impedance detection, the device also detects when a headset is in a CTIA or OMTP configuration and automatically configures the SLEEVE and RING2 terminals to correctly connect the microphone and ground lines.

When a boost supply is applied, the MAX20317 can detect the presence of an ANC headset. When the ANC headset is detected and enabled, a button-press monitoring circuit activates and flags button presses by detecting the voltage drop across a sense resistor.

The MAX20317 provides a power line communication tool to a headset to exchange the data with the host device.

The MAX20317 has the two separate ground sense inputs from the SLEEVE and RING2 terminals of the connector to provide a high ground isolation to the audio codec.

The MAX20317 is available in a space-saving, 20-bump, 0.4mm pitch, 1.65mm x 2.05mm wafer-level package (WLP) and operates over the -40°C to +85°C extended temperature range.
MAX20317: Block Diagram MAX20317: Block Diagram Enlarge+

Key Features

  • Allows Wide Range of Applications by Supporting Universal 3.5mm Jack Types
    • Auto-Configuration for CTIA and OMTP Headsets
    • Supports MEMS Microphone
    • 50mΩ Ground Switch
  • Enables Long Utilization of Accessories by Supplying Power Through 3.5mm Jack
    • Powered Accessory/Headset Detection
    • Bypass Switch to Power Accessories, Such as ANC Headsets
    • Programmable Button Detection in Powered Accessory Mode
  • Empowers New Path in Data Communication to Accessories
    • Power Line Communication by 3.5mm Jack
    • Bidirectional Digital Data Communication in Power Mode
    • Allow Emergence of New Accessory Types
  • Provides Comfortable Sounds by Introducing Automatic Volume Adjustment
    • Adaptive Volume Control Based on Precision Headset Impedance
    • False Insertion Detection
  • Saves Board Space with Small Form Factor
    • 1.65mm x 2.05mm 4 x 5 Array 20-Bump 0.4mm Pitch WLP


  • Notebook PCs
  • Phablet
  • Smart Phones
  • Tablet PCs

See parametric specs for Audio Jack Detectors (2)

Part NumberVSUPPLY
Low-Noise LDO Output
MIC Switch DetectionControl InputsSupply Current for MIC Detection
Pop-Up Noise EliminationESD ProtectionPackage/PinsOper. Temp.
See Notes
MAX20317 2.5 to 5.5
GroundMIC Mode
Plug-in and Plug-out15kV HBM on MIC and DETIN
-40 to +85$0.77 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX20317EVKIT: Evaluation Kit for the MAX20317
Request Reliability Report for: MAX20317 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

11.7W Digital Input Class DG Amplifier with I/V Sense and Ultra-Low Quiescent Power

  • Wide Input Supply Range (3.0V to 14V)
  • Class-DG Operation Enables Industry Leading Quiescent Power
  • Ultra-Low Noise Floor