PGA2500IDB

Overview

The PGA2500IDB is a microphone preamplifier from Texas Instruments housed in a 28-SSOP package. It operates on a single supply voltage ranging from 4.75 V to 5.25 V with a typical operating current of 30 mA. The device features a total harmonic distortion plus noise of 0.0002% and an input voltage noise density of 1.2 nV/sqrt Hz. Gain settings include 0 dB and adjustable ranges from 10 dB to 65 dB in 1 dB steps. It supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Digital gain control via SPI interface for precise audio level adjustment
• Low noise performance suitable for high-fidelity microphone applications
• Integrated mute functionality for signal management

Applications

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

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature rating. Ensure compatibility with SPI communication protocols used in the target design. Confirm moisture sensitivity levels and reflow soldering profiles during assembly planning.

Selection Notes

Select this component when digital gain control is required for microphone preamplification. Compare input impedance and power consumption against alternative analog solutions. Verify that the 28-SSOP footprint fits the available PCB space and thermal requirements.

Part Context

This part belongs to the PGA2500 series of microphone preamplifiers. It is designed for applications requiring low noise and digital programmability. Related variants may include reel-packaged versions or different suffixes indicating specific testing or packaging options.

Replacement Considerations

Check for PGA2500IDBR as a potential reel-packaged alternative. Verify pinout compatibility before substituting with other audio preamplifiers.