Analog Devices / Maxim Integrated MAX20317 Universal 3.5mmØ Accessory Management IC
Analog Devices MAX20317 Universal 3.5mmØ Accessory Management IC is I2C controllable and provides a universal jack interface solution. The MAX20317 also provides a compact solution for the power management and interface control of a powered accessory like an active noise canceling (ANC) headset.
The Analog Devices 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.
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
- 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
- 1.65x2.05mm 4x5 Array 20 Bump 0.4mm Pitch WLP
- 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
Applications
- Smart Phones
- Phablet
- Tablet PCs
- Notebook PCs
Typical Application Circuit
Published: 2017-08-28
| Updated: 2023-04-14