FAN6756MRMY Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – New Products, Tips and Tools for Power and Mobile Applications

BENCHMarks^™
New Products, Tips and Tools for Power and Mobile Applications
VOL. 1, 2012
Advantages
• Excellent signal-to-noise ratio
• Lower power compensation,
0.8mW
• <20μW power down mode
Applications
• Mobile handsets
• Notebook PC microphones
For more information, please visit:
www.fairchildsemi.com/pf/FA/FAN3850A.html
www.fairchildsemi.com/pf/FA/FAN3850T.html
Digital Microphones Improve
Sound Quality, Lower Power
Achieve better sound quality in mobile handset and notebook microphone
applications with Fairchild’s FAN3850x series of digital microphone pre-amplifiers.
These high performance analog mobile audio devices provide advanced noise
rejection capabilities as well as an easy interface to mobile handset processors.
The series includes:
• FAN3850A that features both 16dB and 19dB gain versions,
• FAN3850T offering 15dB gain and integrated negative temperature
coefficient to compensate for ECM positive temperature coefficient to
achieve a flat sensitivity response over temperature.
Both devices integrate a pre-amplifier, low drop-out regulator (LDO) and analog-
to-digital converter (ADC) that converts Electret Condenser Microphone (ECM)
outputs to digital pulse density modulation (PDM) data streams.
90
80
70
60
50
40
30
20
10
0
-10
-20
0.001
0.01
0.1
1
10
100
Input Signal (mVpp)
SNR (dBa)
THD (dB)
SINAD (dB)
FAN3850T 15dB SNR (dBa), THD (-dB), SINAD (dB) over Input Amplitude
Product
Number
I_DD (μA)
I_SLEEP (μA)
FAN3850x
420
1.4
V_DD = 1.8V, F_CLOCK = 2.4MHz, 94dBSPL
SNR (dB)
62
THD (%)
0.01
120dB SPL
THD + N
(%)
3
ESD (HBM)
(kV)
7