TEA6849H.pdf
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INTEGRATED CIRCUITS
DATA SHEET
TEA6849H
New In Car Entertainment car radio
tuner IC with Precision Adjacent
Channel Suppression
(NICE-PACS)
Product specification
2003 Dec 19
Philips Semiconductors
Product specification
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
TEA6849H
CONTENTS
10
DC CHARACTERISTICS
11
AC CHARACTERISTICS
1
FEATURES
I
2
C-BUS PROTOCOL
12
2
GENERAL DESCRIPTION
12.1
I
2
C-bus specification
3
ORDERING INFORMATION
12.1.1
Data transfer
4
QUICK REFERENCE DATA
I
2
C-bus pull-up resistors
12.1.2
12.1.3
Frequency setting
5
BLOCK DIAGRAM
12.1.4
Default settings
6
PINNING
12.2
I
2
C-bus protocol
7
FUNCTIONAL DESCRIPTION
12.2.1
Data transfer mode and IC address
7.1
Oscillators
12.2.2
Write mode: data byte 0
7.1.1
VCO
12.2.3
Write mode: data byte 1
7.1.2
PLL
12.2.4
Write mode: data byte 2
7.1.3
Crystal oscillator
12.2.5
Write mode: data byte 3
7.2
DAA
12.2.6
Write mode: data byte 4
7.3
FM signal channel
12.2.7
Write mode: data byte 5
7.3.1
FM mixer 1
12.2.8
Write mode: data byte 6
7.3.2
Buffer output for weather band flag
(pin WBFLAG)
12.2.9
Write mode: data byte 7
12.2.10
Read mode: data byte 0
7.3.3
FM keyed AGC
13
TEST AND APPLICATION INFORMATION
7.3.4
FM IF amplifier
14
INTERNAL CIRCUITRY
7.3.5
FM mixer 2
15
PACKAGE OUTLINE
7.3.6
FM IF2 dynamic selectivity
7.3.7
FM quadrature demodulator
16
SOLDERING
7.3.8
FM MPX soft mute
16.1
Introduction to soldering surface mount
packages
7.3.9
Adjacent channel detector and threshold
extension
16.2
Reflow soldering
7.3.10
Bandwidth control ‘active’ flag (pin IFBWFLAG)
16.3
Wave soldering
7.3.11
Bandwidth control monitor voltage (pin V
IFBW
)
16.4
Manual soldering
7.4
AM signal channel
16.5
Suitability of surface mount IC packages for
wave and reflow soldering methods
7.4.1
AM tuner including mixer 1 and mixer 2
7.4.2
AM RF AGC
17
DATA SHEET STATUS
7.4.3
AM detector
7.4.4
AM noise blanker
18
DEFINITIONS
7.5
FM and AM level detector
19
DISCLAIMERS
8
LIMITING VALUES
20
PURCHASE OF PHILIPS I
2
C COMPONENTS
9
THERMAL CHARACTERISTICS
2003 Dec 19
2
Philips Semiconductors
Product specification
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
TEA6849H
1
FEATURES
·
FM mixer 1 for conversion of FM RF (65 to 108 MHz
and US weather band) to IF of 10.7 MHz; the mixer
provides inherent image rejection; for European and
US FM band/WB (weather band) the mixer is driven with
a ‘high’ injection Local Oscillator (LO); in Japan
FM band and East Europe FM band the mixer is driven
with a ‘low’ injection LO
·
Level detector for AM and FM with temperature
compensated output voltage; starting point and slope of
level output is programmable via the I
2
C-bus
·
AM mixer 1 for conversion of AM RF to AM IF1 of
10.7 MHz
·
AM cascode AGC stage and RF PIN diode drive circuit;
AGC threshold detection at AM mixer 1 and IF2 AGC
input; threshold for detection at mixer 1 input is
programmable via the I
2
C-bus
LC tuner oscillator providing mixer frequencies for
FM mixer and AM mixer 1
·
·
AM mixer 2 for conversion of AM IF1 to AM IF2 of
450 kHz
·
AM IF2 AGC and demodulator
·
AM AF output switchable to provide AM IF2 for
AM stereo decoder
·
Crystal oscillator providing mixer frequencies for
AM mixer 2 and FM mixer 2 and reference for
synthesizer PLL, IF count, timing for Radio Data System
(RDS) update and reference frequency for car audio
signal processor ICs
·
AM noise blanker with detection at IF1 and blanking at
AM IF2
·
Software controlled flag output
·
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating
·
Buffer output for weather band flag
·
Adjacent channel detector and modulation detector for
instantaneous bandwidth control of the integrated filter
·
Timing function for RDS update algorithm and control
signal output for car audio signal processor ICs
(TEA688x, SAA77xx, TEF689x)
·
Flag and voltage output indicating the actual bandwidth.
·
I
2
C-bus adjustable FM MPX soft mute
2
GENERAL DESCRIPTION
·
Digital alignment circuit for bus controlled matching of
oscillator tuning voltage to FM antenna tank circuit
tuning voltage
The TEA6849H is a single IC with car radio tuner for AM,
FM and Weather Band (WB) intended for microcontroller
tuning with the I
2
C-bus. It provides the following functions:
·
·
AGC PIN diode drive circuit for FM RF AGC; AGC
detection at FM mixer input; the AGC PIN diode drive
can be activated by the I
2
C-bus as a local function for
search tuning; AGC threshold is a programmable and
keyed function switchable via the I
2
C-bus
AM double conversion receiver for LW, MW and SW
(31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and
IF2 = 450 kHz
·
FM double conversion receiver with integrated image
rejection for IF1 and for IF2 capable of selecting US FM,
US weather, Europe FM, East Europe FM and
Japan FM bands; fully integrated dynamic selectivity at
450 kHz FM IF2; FM demodulator with dynamic
threshold extension; centre frequency alignment of IF2
selectivity via the I
2
C-bus
·
FM IF linear amplifier with high dynamic input range
FM mixer 2 for conversion of FM IF1 to FM IF2 of
450 kHz with inherent image rejection
·
·
Fully integrated dynamic selectivity and
FM demodulator at IF2; improved sensitivity with
dynamic threshold extension; centre frequency of IF2
selectivity alignment via the I
2
C-bus
·
The tuning system includes VCO, crystal oscillator and
PLL synthesizer on one chip.
3
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
DESCRIPTION
VERSION
TEA6849H
LQFP80
plastic low profile quad flat package; 80 leads; body 12
´
12
´
1.4 mm
SOT315-1
2003 Dec 19
3
Philips Semiconductors
Product specification
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
TEA6849H
4
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
DDA(n)
analog supply voltage 1 to 4 and 6
8
8.5
9
V
I
DDA(tot)
sum of analog supply
currents 1 to 4 and 6
FM mode
45
56
67
mA
AM mode
40
50
60
mA
V
DDA5
analog supply voltage 5
4.75
5
5.25
V
I
DDA5
analog supply current 5
FM mode
-
7.4
-
mA
AM mode
11
mA
-
-
V
DDD
digital supply voltage
4.75
5
5.25
V
I
DDD
digital supply current
FM mode
21
26
31
mA
AM mode
22
27
32
mA
f
AM(ant)
AM input frequency
LW
0.144
0.288
MHz
-
MW
0.522
-
1.710
MHz
SW
5.730
-
9.99
MHz
f
FM(ant)
FM input frequency
65
-
108
MHz
f
FM(WB)(ant)
FM weather band input frequency
162.4
162.55
MHz
-
T
amb
ambient temperature
-
40
-
+85
°
C
AM overall system parameters;
see Figs 12 and 13
(S+N)/N
signal plus noise-to-noise ratio
m = 0.3; B
AF
= 2.15 kHz
-
59
-
dB
THD
total harmonic distortion
m = 0.8; f
mod
= 1 kHz
-
0.3
-
%
V
sens(rms)
sensitivity (RMS value)
m = 0.3; f
mod
= 1 kHz;
(S+N)/N = 26 dB;
with European dummy
aerial 15 pF/60 pF;
B
AF
= 2.15 kHz
-
45
-
m
V
FM overall system parameters;
see Figs 12 and 13
(S+N)/N
signal plus noise-to-noise ratio
D
f = 22.5 kHz;
de-emphasis = 50
-
63
-
dB
s;
B
AF
= 300 Hz to 15 kHz
m
THD
total harmonic distortion
D
f = 75 kHz;
with 2
-
0.35
-
%
´
SFE10.7MS3
V
sens(rms)
sensitivity (RMS value)
D
f = 22.5 kHz;
f
mod
= 1 kHz;
(S+N)/N = 26 dB;
de-emphasis = 50
m
s;
B
AF
= 300 Hz to 15 kHz;
with 75
-
1.4
2
m
V
W
dummy antenna
2003 Dec 19
4
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MPXDCFDB
OSCTNK
OSCFDB
CPOUT
V
tune
FREF
VCOGND
DGND
AFSAMPLE
TRDSMUTE
AFHOLD
V
DDA5
V
DDD
V
DDA4
FMMUTE
V
DDA3
AMAFIF2
RDSMPX
FMMPX
MODDET
41
50
42
43
44
45
46
47
48
49
51
52
53
54
55
56
57
58
59
60
40
DAAIN
61
V
DDA6
AMPLIFIER
POWER
SUPPLY
RDS
UPDATE
VCO
WB
x1/ x15
TUNING SYSTEM
I
2
C
-bus
39
ANTENNA
DAATD
62
63
DAA
IFBWFLAG
SDA
AM STEREO
RDS
I
2
C-BUS
MUX
38
MUTE
64
DAAOUT
SCL
AM
TEA6849H
37
I
2
C
-bus
TKEYEDAGC
TFMAGC
IFMAGC
WBFLAG
FMMIXIN2
IF
COUNT
SOFT
MUTE
AM
DEMOD
36
FM
AGC
35
LEVEL
I
2
C-bus
WB/JAPAN/OIRT
34
FM
AM
33
´
¸
1/
¸
2/
¸
3
90
65
66
67
32
BUFFER
V
IFBW
IF2GND
CINT
MPXOUT
i.c.
RFGND
31
FM
I/Q MIXER 1
°
30
FMMIXIN1
´
29
IF
FILTER
FM
DEMOD
BANDWIDTH
CONTROL
AM NOISE
DETECTOR
V
ref(MIX)
90
°
FM
MIXER 2
68
MODETOUT
28
69
70
71
72
73
TACD
V
level(AMFM)
XTAL1
XTALGND
XTAL2
IAMAGC
LEVEL
27
THFAMAGC
TAFAMAGC
26
I
2
C-bus
CRYSTAL
OSCILLATOR
AM
AGC
PEAK/
AVERAGE
20.5 MHz
25
¸
2
VAMCAS
VAMCASFB
24
LEVEL
´
74
75
V
level(ACD)
ACDTHRES
I
2
C-
bus
SOFT MUTE
CONTROL
¸
10/
¸
20
BLANK
PULSE
LEVEL
DAA
STABI
AM
MIXER 2
I
2
C-bus
I
2
C-bus
I
2
C-bus
23
´
76
77
78
79
80
AMMIX1IN
IREF
AMMIX2OUT1
AMMIX2OUT2
CAGC
V
ref(lim)
AM
MIXER 1
22
AMMIX1DEC
SWFLAG
21
19
18
17
16
15
14
13
12 11 10
9
3
2
1
20
876
5
4
MDB205
IF2FILI
IFAMPDEC
IF2FILQ
MIX1OUT2
MIX1OUT1
V
DDA1
AMNBHOLD
AMIF2DEC
FMLIMDCFDB1
V
DDA2
IFAMPIN
IFAMPOUT
IFCDAATEST
FMMIX2DEC
COFFSET
AMIF2IN
IREFFMIF2
FMLIMDCFDB2
IF1GND
FMMIX2IN
Fig.1 Block diagram.
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