Philips Semiconductors
Product specification
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
TEA6848H
MHC439
6
handbook, full pagewidth
V
level(AMFM)
(V)
5
4
(1)
3
(2)
2
(3)
1
0
−3
−2
−1
2
3
10
10
10
10
10
1
10
V
(mV)
AMIF2IN
(1) Level DAA setting byte 5 = FFH.
(2) Level DAA setting byte 5 = 84H (standard setting).
(3) Level DAA setting byte 5 = 00H.
Fig.4 AM level voltage.
handbook, full pagewidth
T
70
71
73
rep
V
level(AMFM)
XTAL2
V
pulse
TEA6848H
V
1 kΩ
1 kΩ
77
78
test signal
8.5 V
18 19
14
oscilloscope,
counter
4.7 nF
50 Ω
MHC440
100 Ω
pulse
100 Ω
V
IFAMPIN
V
8.5 V
Test signal: Trep = 2 ms, tr < 50 ns, tf < 50 ns and duty factor 50%.
VIFAMPIN = 4 V and VXTAL2 = 3 V.
Fig.5 Test circuit for AM noise blanker.
28
2004 Nov 12
NXP [ NXP ]
