The TS472 is a differential input microphone preamplifier optimized for high-performance PDA and notebook audio systems. This device features an adjustable gain from 0 to 40 dB with excellent power-supply and common-mode rejection ratios. In addition, the TS472 has a very low noise microphone bias generator of 2 V. It also includes a complete shutdown function, with active low standby mode.
The TS472 is a differential-input microphone preamplifier optimized for high-performance PDA and notebook audio systems. It features an adjustable gain from 0 to 40 dB, excellent power-supply and common-mode rejection ratios, and a very low noise microphone bias generator of 2V.
The device includes a complete shutdown function with an active low standby mode and is available in flip-chip lead-free and QFN24 packages. Key electrical characteristics include a typical equivalent input noise of 10 nV/VHz at 1 kHz and a bandwidth of 40 kHz regardless of the gain setting.
| Equivalent input noise voltage density | 10 nV/VHz typ. |
|---|---|
| Supply voltage range | 2.2 to 5.5 V |
| Supply current at 20 dB gain | 1.8 mA |
| Bandwidth | 40 kHz |
| Total harmonic distortion + noise | 0.1% typ. |
| ESD protection (Human body model) | 2 kV |
| Operating temperature range | -40 to +85 °C |
The typical equivalent input noise is 10 nV/VHz at 1 kHz.
Yes, it features a low noise 2.0 V microphone bias output.
The device features an adjustable gain from 0 to 40 dB.
Yes, it includes an active low standby mode function.