Fairchild Semiconductor has expanded its portfolio of high-performance analog mobile audio devices and introduced the FAN3850x series of digital microphone preamplifiers, including 16dB or 19dB gain FAN3850A and 15dB gain FAN3850T with temperature compensation.
These devices integrate a preamplifier, low-dropout regulator (LDO) and analog-to-digital converter (ADC), where the analog-to-digital converter converts the output of electret condenser microphone (ECM) into digital pulse density modulation (PDM) ) Data stream, to achieve advanced noise suppression capabilities and simple mobile phone processor interface, so as to obtain better sound quality.
* FAN3850A is available in 16dB and 19dB gain models.
* FAN3850T has a gain of 15dB and an integrated negative temperature coefficient to compensate for the positive temperature coefficient of ECM, in order to obtain a flat sensitivity response over the entire temperature range.
* The preamplifier receives the signal from the ECM and drives an over-sampling sigma delta analog-to-digital converter to output a pulse density modulation (PDM) data stream.
* Powered by the system power rail from 1.64V to 3.63V, with a low power consumption of only 0.8mW, and the power consumption in power-down mode is less than 20µW.
* Excellent signal-to-noise ratio (SNR), lower distortion, and high power rejection ratio at high sound pressure level (SPL).
* Suitable for microphones of mobile phones and laptops.
Price: Order 1,000
FAN3850A USD 0.16 each
FAN3850T USD 0.19 each
Supply: Samples can be provided upon request
Delivery time: within 8 to 12 weeks after receiving the order
The PDF format data sheet of the product can be obtained from this website:
For more information, please contact Fairchild Semiconductor's Hong Kong office, phone; Shenzhen office, phone; Shanghai office, phone; Beijing office, phone or visit the company website:.
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