Images are for reference only.
See Product Specifications for product details.
· Supple Range of 2.5V to4.5V
· Accessory Insertion/Removal Detection with Adjustable De-bounce Timings
· Accessory Configuration Detection:
-Stereo 3-pole Headphone
-4-pole Standard Headset with MIC on Sleeve
-4-pole OMTP Headset with MIC on Ring2
· Key Press Detection for Up to 4 Keys
· Ultra Low Ground FET RoN of 60mQ
· Power Off Noise Removal
· Isolation of MICBIAS From Audio Jack to Remove Click/Pop Noise
· Integrated Codec Sense Line
· Manual IPC Control
· FM Transmission Capability·Dual Small Package Options
-16 Pin DSBGA
· Mobile Phones
· Notebooks and Ultrabooks
· Anywhere a 3.5mm Audio Jack is Used
The TS3A227E is an autonomous audio accessory detection and configuration switch that detects 3-pole or 4-pole audio accessories and configures internal switches to route the signals accordingly.
The internal ground FETS of the TS3A227E have an ultra-low RoN of 60 mQ to minimize crosstalk impact. The ground FETs are also designed to pass FM signals, making it possible to use the ground line of the accessory as an FM antenna in mobile audio applications.
Internal isolation switches allow the TS3A227E to remove the click/pop noise that can be generated during and insertion or removal of an audio accessory. In addition depletion FETs prevent afloating ground while the device is unpowered, removing the humming noise present when leaving accessories plugged into an unpowered system.
A low-power sleep mode is provided which shuts down internal circuitry to achieve very low quiescent current draw when no headset is inserted.
The TS3A227E features integrated key press detection for detecting up to 4 keys with press and release support.
Manual l2C control allows the TS3A227E to adapt to application needs by providing control over debounce settings and switch states.
4 Simplified Schematic
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