The MAX20328/MAX20328A are USB Type-C audio interface ICs for use in portable devices. As USB Type-C and USB power delivery (PD) make a high-voltage charging solution readily available, the data and SBU lines are at risk of shorting to a high bus voltage, risking permanent damage to the portable device. USB 2.0 data lines also need protection when multiplexed with analog audio signals that vary from positive to negative voltages. The devices can detect a CC pin connection event to disable the microphone bias and eliminate pop up noise when an audio accessory is attached.
The MAX20328/MAX20328A come in a 5 x 5 array, 25-bump, 0.4mm pitch, 2.31mm x 2.31mm wafer-level package (WLP).
Key Features
Versatile and Flexible Switch Configurations
High-Speed USB Data or Audio Switch Paths
Automatic Impedance Detection in Audio Configurations
Full Manual Switch Control
Beyond-the-Rails™ Signal Capability
Overvoltage Protected Data and Audio Channels
Two Separate OVLO Blocks
OVLO Threshold Programmable to 3.37V, 4.00V, 4.70V, or 5.00V
Negative Voltage Capable Audio Channel
±5V Audio Signals (Limited by Positive OVLO Threshold)
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