TS472IQT

Overview

The TS472IQT is a differential-input microphone preamplifier optimized for high-performance PDA and notebook audio systems. It features adjustable gain from 0 to 40 dB with excellent power-supply and common-mode rejection ratios. The device includes a very low noise microphone bias generator of 2 V and operates on a single supply voltage ranging from 2.2 V to 5.5 V. It offers fully-differential input/output, fast start-up time at 0 dB of 5 ms typical, and active low standby mode function with maximum current consumption of 1 μA. The equivalent input noise is typically 10 nV/√Hz at F = 1 kHz, and total harmonic distortion plus noise is typically 0.1%. It is available in a 24-QFN (4x4 mm) package.

Feature Summary

• Differential-input architecture optimized for high-performance audio systems
• Integrated low noise 2.0 V microphone bias output
• Active low standby mode function for power saving
• Fully-differential input and output configuration

Applications

• High-performance PDA audio systems
• Notebook computer audio systems
• Microphone preamplification circuits

Procurement Notes

Verify the specific suffix 'IQT' corresponds to the 24-QFN 4x4 mm package and tape-and-reel packaging format when sourcing. Confirm that the component meets RoHS3 compliance standards as indicated in official documentation. Ensure compatibility with the required operating temperature range of -40°C to +85°C for your specific application environment before finalizing procurement.

Selection Notes

Select this component when a differential-input microphone preamplifier with integrated bias generation is required for portable electronics. It is suitable for designs needing low noise performance and adjustable gain up to 40 dB. Consider the 24-QFN package size for space-constrained PCB layouts. Verify that the single supply voltage range of 2.2 V to 5.5 V aligns with the system power rails.

Part Context

The TS472IQT belongs to the TS472 series of ultra-low noise microphone preamplifiers manufactured by STMicroelectronics. This series is specifically engineered for mobile devices such as PDAs and notebooks. The 'IQT' designation identifies the specific variant housed in a 24-pin QFN package, distinguishing it from other package options like the flip-chip lead-free package found in related models within the same product family.

FAQ

What is the typical equivalent input noise of the TS472IQT?

The typical equivalent input noise is 10 nV/√Hz at a frequency of 1 kHz.

Does the TS472IQT support a standby mode?

Yes, it includes an active low standby mode function with a maximum current consumption of 1 μA.

What is the bandwidth of the TS472IQT?

The device maintains a 40 kHz bandwidth regardless of the gain setting.