FAN3850T Fairchild Semiconductor, FAN3850T Datasheet - Page 4

• Manufacturer Part Number: FAN3850T
• Description: Microphone Pre-Amplifier
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN3850T • Rev. 3.0.0
Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for T
duty cycle = 50%, and C
Symbol
THD+N
V
IN
I
SNR
V
PSR
THD
SLEEP
V
V
V
IN15dB
C
R
V
I
V
e
tc
OUT
DD
NOM
OH
DD
OL
N
IN
IN
IH
IL
Supply Voltage Range
Supply Current
Sleep Mode Current
Power Supply Rejection
Nominal Sensitivity
Signal-to-Noise Ratio
Input Referred Noise
Total Harmonic Distortion
THD and Noise
Temperature Coefficient
Input Capacitance
Input Resistance
CLOCK & SELECT Input,
Logic LOW Level
CLOCK & SELECT Input,
Logic HIGH Level
Data Output, Logic LOW
Level
Data Output, Logic HIGH
Level
Maximum Input Signal for
15.7dB of Gain
Acoustic Overload Point
Parameter
MIC
(5)
(7)
=15pF.
(7,11)
(7,11)
(4)
(7)
(7)
(11)
(7,11)
(5)
INPUT=AC Coupled to GND,
CLOCK=On, No Load
f
INPUT=AC Coupled to GND, Test
Signal on V
Wave and Broad Band Noise
both 100mV
INPUT=94dBSPL
f
20Hz to 20kHz, A-Weighted
15.7dB Gain
f
50Hz ≤ f
f
f
Gain Measured at 50˚C and -10˚C
INPUT
INPUT
f
DC Level=0V
THD < 10%
CLK
IN
IN
IN
IN
IN
=1kHz 1Pa, A-Weighted
=1kHz, INPUT=-26dBFS
=1kHz, INPUT=-5dBFS
=1kHz, INPUT=0dBFS
=1 kHz, THD+N < 10%;
=GND
IN
≤ 1kHz, INPUT=-20dBFS
DD
Condition
P-P
=217Hz Square
4
A
=25°C, V
(3)
DD
=1.8V, V
0.65×V
Min.
>100
1.64
120
1.5
Continued on the following page…
DD
IN
=94dB (SPL), f
-0.035
Typ.
1.80
62.4
0.01
420
1.4
-80
-26
5.3
5.0
0.2
0.2
1.0
0.35×V
V
Max.
DD
3.63
0.10
10.0
503
8.0
8.6
1.0
5.0
0.3
+0.3
CLK
www.fairchildsemi.com
DD
=2.4MHz,
dBSPL
µV
dBFS
dBFS
dB(A)
dB/˚C
mV
Unit
GΩ
μA
μA
pF
%
%
V
V
V
V
V
RMS
PP