TS34118CS28 RDG

Overview

The TS34118CS28 RDG is a voice switched speakerphone circuit manufactured by Taiwan Semiconductor Corporation. It operates within a supply voltage range of 3.5V to 6.5V and consumes approximately 5.0mA during active operation, reducing to 600μA in chip disable mode. The device features a 52dB gain range between transmit and receive paths, with typical attenuator gains of +6.0dB. It utilizes a SOP-28 package for integration into hands-free communication systems.

Feature Summary

• Integrated amplifiers, attenuators, level detectors, and control algorithms for high-quality hands-free speakerphone systems
• Includes microphone amplifier with adjustable gain, mute control, and complementary transmit/receive attenuators
• Features background noise monitors for both transmit and receive channels to distinguish speech from ambient noise
• Supports low voltage line-power applications and includes a dial tone detector to prevent signal attenuation

Applications

• Hands-free operation systems
• VOIP phone

Procurement Notes

Verify the specific ordering suffix RDG corresponds to the SOP-28 packaging configuration containing 1,500 pieces per reel. Confirm compliance with RoHS Directive 2011/65/EU and WEEE 2002/96/EC standards as documented. Ensure the moisture sensitivity level aligns with J-STD-020 requirements for storage and handling procedures.

Selection Notes

Select this component for designs requiring half-duplex speakerphone functionality without external switching logic. The integrated hybrid amplifiers facilitate connection to telephone lines via an external coupling transformer. Consider the 3.5V to 6.5V operating range for compatibility with standard telephony power supplies or battery-operated devices.

Part Context

This part belongs to the TS34118 series of voice switched speakerphone circuits produced by Taiwan Semiconductor Corporation. It serves as a core processing unit for hands-free telephony, replacing discrete implementations of attenuators and level detectors. The device integrates necessary control algorithms to manage acoustic feedback and signal routing automatically.

Replacement Considerations

The datasheet notes compatibility with the TS34119 speaker amplifier. Verify pinout and electrical specifications against other manufacturer equivalents if cross-referencing is required.