ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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Microphone preamplifier amplifier Electronics Ic chip TS472IQT , Very low noise
Features
■ Low noise: 10nV/√Hz typ. equivalent input noise @ F = 1kHz
■ Fully differential input/output
■ 2.2V to 5.5V single supply operation
■ Low power consumption @20dB: 1.8mA
■ Fast start up time @ 0dB: 5ms typ.
■ Low distortion: 0.1% typ.
■ 40kHz bandwidth regardless of the gain
■ Active low standby mode function (1μA max)
■ Low noise 2.0V microphone bias output
■ Available in flip-chip lead-free package and in QFN24 4x4mm package
■ ESD protection (2kV)
Description
The TS472 is a differential-input microphone preamplifier optimized for high-performance, PDA and notebook audio systems.
This device features an adjustable gain from 0dB to 40dB with excellent power-supply and common-mode rejection ratios. In addition, the TS472 has a very low-noise microphone bias generator of 2V.
It also includes a complete shutdown function, with active low standby mode.
Applications
■ Video and photo cameras with sound input
■ Sound acquisition & voice recognition
■ Video conference systems
■ Notebook computers and PDAs
Figure 1. Application schematic (flip-chip)
STOCK LIST
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