(China (Mainland))
Product Summary
The LMV431CM5X is an audio amplifier for 3-Wire Analog Electret Microphones. It is designed to replace the JFET preamp currently being used. The LMV431CM5X is ideal for extended battery life applications, such as a Bluetooth communication link. The addition of a third pin to an electret microphone that incorporates an LMV1032 allows for a dramatic reduction in supply current as compared to the JFET equipped electret microphone. Microphone supply current is thus reduced to 60μA, assuring longer battery life. It is guaranteed for supply voltages from 1.7V to 5V, and has fixed voltage gains of 6 dB, 15dB and 25dB. The applications of the LMV431CM5X include Mobile communications - Bluetooth, Automotive accessories, Cellular phones, PDAs, Accessory microphone products.
Parametrics
LMV431CM5X absolute maximum ratings: (1) ESD Tolerance: Human Body Model 2500V, Machine Model 250V; (2) Supply Voltage: VDD - GND 5.5V.
Features
LMV431CM5X features: (1)Output voltage noise (A-weighted): -89dBV; (2)Low supply current: 60μA; (3)Supply voltage: 1.7V to 5V; (4)PSRR: 70dB; (5)Signal to noise ratio: 61dB; (6)Input capacitance: 2pF; (7)Input impedance: ＞100MΩ; (8)Output impedance:＜200Ω; (9)Max input signal 170mVPP; (10)Temperature range: -40℃ to 85℃; (11) Large Dome 4-Bump micro SMD package with improved adhesion technology.
Diagrams
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 LMV431CM5X |
National Semiconductor (TI) |
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LMV431CM5X/NOPB |
National Semiconductor (TI) |
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