GP520A 데이터 시트보기 (PDF) - Gennum -> Semtech
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GP520A Datasheet PDF : 10 Pages
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2n2 2n2
VCC A OUT
HPFB
HP
9
15 18
19
13 VOLTAGE
REGULATOR
3µ3
AIN 14
10µ
RIN14
+
PREAMP
-
40K
+ HP
2R FILTER
-
1n5
680p
TP
68n
LPFB
BUFFER
OUT
22 24 BUFFER
IN
26 27
R
+
LP
FILTER
-
R
10n 10n
68n
10K
1
31
30 5 BIN
BOUT VCC
7
2k2
11
DOUT
R
10K
0.6V
LIN/LOG
CONVERTER
12
6
20
P GND GND
I HP
PINK
NOISE
I HP
GENERATOR
0.6 V
LIN/LOG
CONVERTER
21
I LP
I LP
All resistors in ohms, all capacitors in
farads, unless otherwise stated.
Fig. 4 AC Test Circuit for High & Low Pass Filters
10k
10k
IHP = 1.875 x IR
1k
100
80 0 0.25 0.5 0.75 1
1.25 1.5 1.75
2
NORMALIZED I HP / I R CURRENT
Fig. 5 High Pass Filter Corner Frequency vs IHP Current
(Note 1) (Fig.4 Test Circuit)
1k
700
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2
NORMALIZED I HP / I R CURRENT
Fig. 6 Low Pass Filter Corner Frequency vs ILP Current
(Note 1) (Fig.4 Test Circuit)
NOTES: 1. Corner frequency calculated in reference to signal at 3 kHz
5
510 - 78 - 06
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