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LMV1015XRX-25 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMV1015XRX-25 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 11 page LMV1015 Analog Series: Built-in Gain IC’s for High Sensitivity 2-Wire Microphones General Description The LMV1015 is an audio amplifier series for small form factor electret microphones. This 2-wire portfolio is designed to replace the JFET amplifier. The LMV1015 series is ideally suited for applications requiring high signal integrity in the presence of ambient or RF noise, such as in cellular com- munications. The LMV1015 audio amplifiers are guaranteed to operate over a 2.2V to 5.0V supply voltage range with fixed gains of 15.6 dB and 23.8 dB. The devices offer excel- lent THD, gain accuracy and temperature stability as com- pared to a JFET microphone. The LMV1015 series enables a two-pin electret microphone solution, which provides direct pin-to-pin compatibility with the existing older JFET market. National Semiconductors built-in gain families are offered in extremely thin space saving 4-bump micro SMD packages (0.3 mm maximum). The LMV1015XR is designed for 1.0 mm ECM canisters and thicker. These extremely miniature packages have the Large Dome Bump (LDB) technology. This micro SMD technology is designed for microphone PCBs requiring 1 kg adhesion criteria. Features (Typical LMV1015-15, 2.2V supply, R L = 2.2 k Ω, C = 2.2 µF, V IN =18mVPP, unless otherwise specified) n Supply voltage 2V - 5V n Supply current <180 µA n Signal to noise ratio (A-weighted) 60 dB n Output voltage noise (A-weighted) −89 dBV n Total harmonic distortion 0.09% n Voltage gain — LMV1015-15 15.6 dB — LMV1015-25 23.8 dB n Temperature range −40˚C to 85˚C n Large Dome 4-Bump micro SMD package with improved adhesion technology. Applications n Cellular phones n Headsets n Mobile communications n Automotive accessories n PDAs n Accessory microphone products Schematic Diagram 20128901 Built-In Gain Electret Microphone 20128902 May 2005 © 2005 National Semiconductor Corporation DS201289 www.national.com |
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