cxa1897q Sony Electronics, cxa1897q Datasheet - Page 19

• Manufacturer Part Number: cxa1897q
• Description: Dolby B Type Noise Reduction System With Recording/playback Equalizer
• Manufacturer: Sony Electronics

Examples of representative characteristics
–10
–20
–30
10
0.05
0.01
0
0.5
0.1
Quiescent current vs. Supply voltage
20
20
25
15
–40
Vcc=8V
AGC TC 47 F/300k
f=1kHz
AGC total harmonic distortion
7
50
–30
V
AMS no signal detection level frequency response
CC
AGC Input level (dBm)
V
120 s-NS
AMS OUT 7V
0dB=–25dBm, 315Hz
-Supply voltage (V)
8
CC
100
(Playback equalizer reference output level)
=8V
–20
9
200
10
–10
500
Frequency (Hz)
11
1k
0
—19—
2k
–10
–20
–30
5k
0
Play back equalizer total harmonic distortion
1.0
0.1
–40
AGC output voltage characteristics
10k
–30
V
R
MODE 120 s-NS
f=1kHz
CC
L
=2.7k
=8V
20k
–25
–30
Output level (dBm)
Input level (dBm)
–20
50k
–20
to 8V
–15
–10
–10
3
AGC OFF
+
AGC ON
–5
4
0
CXA1897Q