Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
MHB484
6
handbook, full pagewidth
V
level
(V)
5
4
(1)
3
(2)
2
(3)
1
0
−3
−2
−1
2
3
10
10
10
10
10
1
10
V (mV)
i
(1) Level DAA setting byte 6 = FFH.
(2) Level DAA setting byte 6 = 84H (standard setting).
(3) Level DAA setting byte 6 = 00H.
Vi = VAMIF2IN − VAMIF2DEC
Fig.3 AM level output voltage (DAA) as a function of AM level circuit input voltage.
handbook, full pagewidth
T
58
59
61
rep
V
level
V
P
TEA6845AH
TEA6845H
3 V
1 kΩ
1 kΩ
64
63
test signal
8.5 V
16 17
13
4.7 nF
oscilloscope,
counter
50 Ω
100 Ω
100 Ω
MHB876
4 V
V
P
8.5 V
Test signal: Trep = 2 ms, tr < 50 ns, tf < 50 ns, and duty factor 50%.
Fig.4 Test circuit for AM noise blanker.
25
2001 Apr 12
NXP [ NXP ]
