U2510B Datasheet, PDF (7/15 Pages) ATMEL Corporation – All-Band AM/FM Receiver and Audio Amplifier

0
S+N(m=80%)
–20
S+N(m=30%)
–40
V_S=6V
f_i1=1.6MHz
–60
N
f_AF=1kHz
T_amb=25°C
–80
d(m=80%)
–100
–20 0 20
95 10404
d(m=30%)
40 60 80 100 120
V_i ( dBmV )
Figure 9. AM section: Demodulator output level
0
V_S=6V
V_i3=10mV
f_AF=1MHz
–20
f_AF=10kHz
T_amb=25°C
–40 ^{Treble Voltage V8}
–60
Treble Voltage = 0
–80
0
0.5
95 10406
1
1.5
V₄ ( V )
2
2.5
Figure 10. Volume control range characteristics
U2510B
6
AM
5
FM
4
I_LED
3
2
1
V_S=6V
T_amb=25°C
0
0 20 40 60 80 100 120
95 10407
V_i ( dBmV )
Figure 11. AM/FM level indicator current
2.0
1.2
0.8
V_S=6V
0.4 f_i1=1.6MHz
T_amb=25°C
0
20 0
95 10408
20 40 60 80 100 120
V_i ( dBmV )
Figure 12. AM section: AGC voltage (at Pin 22)
Rev. A3, 23-Feb-01
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