GA3201 查看數據表（PDF） - Gennum -> Semtech
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GA3201 Datasheet PDF : 8 Pages
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MICROPHONE
BATTERY
-
+
3
GND
3
GND
2
IN
1
VREG
4
OUT
5
VBAT
6
BOUT
7
BIN
8
SDA
2µ2
+RECEIVER
TO PROGRAMMER
Fig. 4 Typical Assembly Diagram
TYPICAL PERFORMANCE CURVES
-20 ƒ = 4 kHz
R1 - Tap 0
-30
R6 - Tap 0
-40
-50
R6 - Tap 15
-60
-70
-80
-90
-100 -90 -80 -70 -60 -50 -40 -30 -20
INPUT LEVEL (dBV)
Fig. 5 I/O Transfer Function for Different
Compression Ratios (High Frequency Channel)
50
48
VIN = -80dBV
44
40
36
32
28
24
20
16
12
8
4
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R6 RESISTOR TAPS
(Tap 0 - 0kΩ, Tap 15 - 200kΩ)
Fig. 6 High Frequency Gain
(Compression Ratio Adjustment)
-20
ƒ = 1kHz
R1 - Tap 15
-30
R3 - Tap 0
-40
-50
R3 - Tap 15
-60
-70
-80
-90
-100 -90 -80 -70 -60 -50 -40 -30 -20
INPUT LEVEL (dBV)
Fig. 7 I/O Transfer Function for Different
Compression Ratios (Low Frequency Channel)
50
48
VIN = -80dBV
44
40
36
32
28
24
20
16
12
8
4
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R3 RESISTOR TAPS
(Tap 0 - 0kΩ, Tap 15 - 200kΩ)
Fig. 8 Low Frequency Gain
(Compression Ratio Adjustment)
5
521 - 92 - 02
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