TLV320A1109PBSRG4

Codecs Overview

The TLV320A1109PBSRG4 is a PCM codec manufactured by Texas Instruments, designed for voice-band communications systems. It operates on a single 2.7-V supply and features two differential microphone inputs, one differential earphone output, and one single-ended earphone output. The device supports 15-bit linear data or 8-bit companded (µ-Law or A-Law) modes selectable via an I²C interface. It includes programmable gain amplifiers for transmit, receive, sidetone, and volume control, along with DTMF generation and PDM buzzer output capabilities.

Codecs Feature Summary

• Integrated dual differential microphone inputs with switchable low-noise amplification stages
• Dual earphone outputs providing both differential and single-ended configurations with integrated mute functions
• Built-in DTMF tone generator capable of driving external buzzers via pulse density modulation
• Configurable I²C control interface enabling independent adjustment of transmit and receive gain parameters

Codecs Applications

• Digital handsets
• Digital headsets
• Cordless phones
• Digital PABX systems
• Digital voice recording devices

Codecs Procurement Notes

Verify the component against the official Texas Instruments datasheet SLAS358 to confirm pinout compatibility and electrical specifications. Ensure that the PBS package variant matches the required PCB footprint. Confirm RoHS compliance status and check for any specific handling guidelines regarding electrostatic discharge sensitivity during assembly.

Codecs Selection Notes

Select this component when designing voice-band communication circuits requiring low-power operation from a 2.7-V source. It is suitable for applications needing integrated DTMF generation and flexible microphone input configurations. Consider the TQFP package constraints and verify that the host system supports the necessary I²C control protocol for register configuration.

Codecs Part Context

This device belongs to the TLV320AIC series of audio codecs produced by Texas Instruments. It is specifically engineered for telecommunications applications, offering a compact solution for analog-to-digital and digital-to-analog conversion in voice-grade bandwidths. The PBS suffix indicates the specific tape-and-reel packaging format used for surface-mount assembly.

Codecs Replacement Considerations

Consult the Texas Instruments product selection guide for direct replacements within the TLV320AIC family. Verify pin-to-pin compatibility and functional equivalence before substitution. No specific substitute part numbers are confirmed in the provided documentation.