PGA2500IDBRG4

Overview

The PGA2500IDBRG4 is a microphone preamplifier from Texas Instruments housed in a 28-pin SSOP package. It operates within a supply voltage range of 4.75 V to 5.25 V and functions at temperatures between -40°C and +85°C. The device offers digital gain control with a range from 0 dB to 65 dB in 1 dB steps. Key electrical specifications include a total harmonic distortion plus noise of 0.0002%, an input voltage noise density of 1.2 nV/√Hz, and a typical operating supply current of 30 mA.

Feature Summary

• Digital gain adjustment capability spanning 0 dB to 65 dB with 1 dB resolution
• Ultra-low distortion performance characterized by 0.0002% THD+N
• Low input voltage noise density for high-fidelity signal acquisition

Applications

• Professional audio recording equipment
• Broadcasting studio microphone interfaces
• High-end consumer audio hardware

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance status and material composition details. Ensure the SSOP-28 footprint matches the target PCB design constraints. Confirm that the digital control interface requirements align with the system microcontroller or processor capabilities before finalizing procurement.

Selection Notes

Select this component when precise digital gain control is required for microphone signals without sacrificing audio fidelity. The low noise density makes it suitable for sensitive transducer applications. Consider the 28-SSOP package size relative to available board space and thermal dissipation requirements for the specific enclosure design.

Part Context

This part belongs to the PGA2500 series of microphone preamplifiers manufactured by Texas Instruments. It is designed specifically for high-performance audio applications requiring low noise and distortion. The device integrates digital control logic to manage gain settings directly via serial interface.

Replacement Considerations

The PGA2500IDBR is a related variant within the same family. Verify pinout compatibility and functional equivalence before substitution.