TLV1012

TLV1012 www.ti.com .......................................................................................................................................... SLCS154A – OCTOBER 2008 – REVISED NOVEMBER 2008 AMPLIFIER FOR HIGH-GAIN TWO-WIRE MICROPHONES FEATURES 1 Supply Voltage: 2 V to 5 V Supply Current: <180 µA Signal-to-Noise Ratio (A-Weighted): 60 dB Output Voltage Noise (A-Weighted): −89 dBV Total Harmonic Distortion: 0.013% Voltage Gain: 15.6 dB APPLICATIONS Cellular Phones Headsets Mobile Communications Automotive Accessories PDAs Accessory Microphone Products YDC PACKAGE (TOP VIEW) OUTPUT A2 B2 GND GND A1 B1 INPUT DESCRIPTION/ORDERING INFORMATION The TLV1012 is an audio amplifier series for small-form-factor electret microphones. This two-wire amplifier is designed to replace JFET amplifiers currently in use. The TLV1012 is ideally suited for applications that require high signal integrity in the presence of ambient or RF noise, such as in cellular communications. The TLV1012 audio amplifier is specified for operation over a 2.2-V to 5-V supply voltage range with a fixed gain of 15.6 dB. The device offers excellent THD, gain accuracy, and temperature stability compared to JFET microphones. The TLV1012 enables a two-pin electret microphone solution, which provides direct pin-to-pin compatibility with the existing JFET market. The TLV1012 is offered in a space-saving four-terminal ultra-thin lead-free package (YDC) and is ideally suited for t...