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PDF TEA6848H Data sheet ( Hoja de datos )
| Número de pieza | TEA6848H | |
| Descripción | New In Car Entertainment car radio tuner IC with Precision Adjacent Channel Suppression | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TEA6848H (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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INTEGRATED CIRCUITS
DATA SHEET
TEA6848H
New In Car Entertainment car radio
tuner IC with Precision Adjacent
Channel Suppression
(NICE-PACS)
Product specification
Supersedes data of 2004 Oct 21
2004 Nov 12
1 page  
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DAAIN
DAATD
DAAOUT
TKEYEDAGC
TFMAGC
IFMAGC
WBFLAG
FMMIXIN2
i.c.
RFGND
FMMIXIN1
Vref(MIX)
IAMAGC
THFAMAGC
TAFAMAGC
VAMCAS
VAMCASFB
MPXDCFDB
CPOUT
FREF
VCOGND OSCTNK
AFSAMPLE TRDSMUTE
i.c. Vtune
VDDA3
VDDD DGND
OSCFDB VDDA4
AFHOLD
AMAFIF2
40
41
42 43
44 45 46 47 48 49 50 51 52 53 54 55 56
39 ANTENNA I2C-bus
DAA
38
TUNING SYSTEM
VCO
RDS
UPDATE
AM STEREO
MUX
AM
37 I2C-bus
36 FM
TEA6848H
35 AGC
34
LEVEL I2C-bus WB/JAPAN/OIRT
×33
32
31 FM
30 I/Q MIXER 1
÷1/ ÷2/
÷3
90°
AM
DEMOD
29 90°
28
27
26
25 AM
24 AGC
I2C-bus
LEVEL
AM NOISE
DETECTOR
PEAK/
AVERAGE
×
FM
MIXER 2
÷2
IF
FILTER
RDSMPX FMMPX
57 58
AMPLIFIER
WB x1/ x15
RDS
MUTE
VDDA5 MODDET
59
POWER
SUPPLY
I2C-BUS
60
61 VDDA6
62 IFBWFLAG
63 SDA
64 SCL
MPXOUT
FM
DEMOD
20.5 MHz
IF
COUNT
FM AM
BUFFER
BANDWIDTH
CONTROL
LEVEL
CRYSTAL
OSCILLATOR
65 VIFBW
66 IF2GND
67 CINT
68 MODETOUT
69 TACD
70 Vlevel(AMFM)
71 XTAL1
72 XTALGND
73 XTAL2
÷10/
÷20
I2C-bus
BLANK
PULSE
×
AM
MIXER 2
I2C-
bus STABI
LEVEL
DAA
I2C-bus
74 Vlevel(ACD)
75 ACDTHRES
AMMIX1IN
AMMIX1DEC
SWFLAG
×23
22 AM
MIXER 1
21
20
19
18 17 16 15 14
13 12 11 10 9 8 7 6
5
4 3 21
MIX1OUT2
IF2FILI IFAMPDEC
VDDA1
VDDA2
MIX1OUT1 IF2FILQ IFAMPIN IFAMPOUT
IFCDAATEST
AMNBHOLD AMIF2DEC FMLIMDCFDB1
AMIF2IN IREFFMIF2 FMLIMDCFDB2
IF1GND
FMMIX2DEC FMMIX2IN
COFFSET
76
77
78
79
80
MHC436
IREF
AMMIX2OUT1
AMMIX2OUT2
CAGC
Vref(lim)
Fig.1 Block diagram.
5 Page 
Philips Semiconductors
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
Product specification
TEA6848H
7.6 IF2 filter gain alignment
The 4-bit filter gain alignment reduces the change in
IF filter gain spread when the bandwidth is changed in
dynamic mode from 155 kHz (maximum) to 25 kHz
(minimum).
A frequency has to be chosen in the middle of
European/US FM band, Japan band or OIRT band (for
East Europe) and the IC has to be set into dynamic
bandwidth mode (IF2 bandwidth is 155 kHz).
Setting and clearing the FMBW bit continuously allows the
adjustment of the gain alignment to minimum change in
AM/FM DC level.
7.7 Frequency offset detector/alignment
A very strong undesired neighbouring signal causes offset
in the demodulator in case of weak desired input signal.
The frequency offset detector reduces the bandwidth of
the IF2 filter when the detected offset in the demodulator
is too large.
There are four bits available for frequency offset detector
alignment. Every band has to be aligned separately.
Tuning has to be set to middle of the band, input signal
unmodulated, bit IFBW = 1 (alignment voltage will be
given to pin IFBWFLAG). The DC voltage at
pin IFBWFLAG has to be aligned to the minimum value.
8 LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
VDDA1
VDDA2
VDDA3
VDDA4
VDDA5
VDDA6
VDDD
∆VDD8.5-DD5
Tstg
Tamb
Ves
PARAMETER
CONDITIONS MIN.
analog supply voltage 1 for FM IF amplifier
−0.3
analog supply voltage 2 for FM and AM RF
−0.3
analog supply voltage 3 for tuning PLL
−0.3
analog supply voltage 4 for voltage controlled
oscillator
−0.3
analog supply voltage 5 for on-chip power supply
−0.3
analog supply voltage 6 for on-chip power supply
−0.3
digital supply voltage
−0.3
difference between any 8.5 V supply voltage and note 1
any 5 V supply voltage
−0.3
storage temperature
−55
ambient temperature
−40
electrostatic handling voltage
note 2
−200
note 3
−2 000
MAX.
+10
+10
+10
+10
UNIT
V
V
V
V
+6.5 V
+10 V
+6.5 V
−V
+150
+85
+200
+2 000
°C
°C
V
V
Notes
1. To avoid damage and wrong operation it is necessary to keep all 8.5 V supply voltages at a higher level than any 5 V
supply voltage. This is also necessary during power-on and power-down sequences. Precautions have to be
provided in such a way that interference cannot pull down the 8.5 V supply below the 5 V supply.
2. Machine model (R = 0 Ω, C = 200 pF).
3. Human body model (R = 1.5 kΩ, C = 100 pF).
9 THERMAL CHARACTERISTICS
SYMBOL
Rth(j-a)
Rth(j-c)
PARAMETER
thermal resistance from junction to ambient
thermal resistance from junction to case
CONDITIONS
in free air
VALUE
54
9
UNIT
K/W
K/W
2004 Nov 12
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TEA6848H.PDF ] | |
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