TEF6902A
Integrated car radio
Rev. 03 — 19 March 2008
Product data sheet
1. General description
The TEF6902A is a single-chip car radio integrated circuit with FM/AM tuner, stereo
decoder, weak signal processing and audio processing.
FM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz with integrated
image rejection for both IF1 and IF2; integrated channel filter with variable bandwidth
control; capable of US FM, Europe FM, Japan FM and Eastern Europe FM. AM tuner with
double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz; capable of Long Wave (LW),
Medium Wave (MW) and full range Short Wave (SW) (11 m to 120 m bands).
Multiplex (MPX) stereo decoder, ignition noise blanker and extensive weak signal
processing.
Audio processing with flexible source selection, volume, balance, fader, input gain control
and inaudible tuning mute. Integrated audio filters for bass and treble and loudness control
function.
The device can be controlled via the fast-mode I
2
C-bus (400 kHz) and includes
autonomous tuning functions for easy control without microcontroller timing. No manual
alignments are required.
2. Features
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
FM Radio Frequency (RF) front-end with large dynamic range
Integrated FM channel filter with controlled bandwidth
Fully integrated FM demodulator
Fully integrated stereo decoder with high immunity for birdy noise
FM noise blanker with adaptive detection at MPX and level
Signal quality detection: level, AM wideband, frequency deviation, ultrasonic
noise/adjacent channel
FM weak signal processing: stereo blend, high cut control and soft mute
AM RF Automatic Gain Control (AGC) circuit for external cascode AGC and Positive
Intrinsic Negative (PIN) diode AGC
Dual AM noise blanking system
AM weak signal processing: high cut control and soft mute
Low phase noise local oscillator
In-lock detection for optimized adaptive Phase-Locked Loop (PLL) tuning speed
Crystal oscillator reference with low harmonics
Inaudible soft slope tuning mute for AM and FM
Sequential state machine supporting each tuning action
Flexible audio input source selection
NXP Semiconductors
TEF6902A
Integrated car radio
I
I
I
I
I
I
Integrated audio processing and tone filtering
Treble, bass and loudness tone control
Volume, balance, fader and input gain control
Audio controls with Audio Step Interpolation (ASI) for pop-free function
Compact Disc (CD) dynamics compression
Volume Unit (VU)-meter audio level read-out
3. Quick reference data
Table 1.
Symbol
V
CC
Quick reference data
Parameter
analog supply voltage on pins VCC,
VCCPLL, VCCVCO, VCCRF,
AMMIX2OUT1, AMMIX2OUT2,
MIX1OUT1 and MIX1OUT2
total supply current inclusive I
V60
total supply current inclusive I
V60
AM tuning frequency
LW
MW
SW
V
sens
sensitivity voltage
f
RF
= 990 kHz; m = 0.3;
f
mod
= 1 kHz; B
AF
= 2.15 kHz;
(S+N)/N = 26 dB; dummy aerial
15 pF/60 pF
200
µV
< V
RF
< 1 V; m = 0.8;
f
AF
= 400 Hz
∆f
= 40 kHz
Conditions
Min
8
Typ
8.5
Max
9
Unit
V
Supply voltage
Supply current in FM mode
I
CC
I
CC
f
tune
-
-
144
522
2.3
-
102
89
-
-
-
50
-
-
288
1710
26.1
-
mA
mA
kHz
kHz
MHz
µV
Supply current in AM mode
AM overall system parameters
S/N
THD
IP3
f
tune
V
sens
ultimate signal-to-noise ratio
total harmonic distortion
3rd-order intercept point
FM tuning frequency
sensitivity voltage (RF input voltage
at (S+N)/N = 26 dB)
∆f
= 22.5 kHz; f
mod
= 1 kHz;
DEMP = 1; B = 300 Hz to 22 kHz;
measured with 75
Ω
dummy
antenna and test circuit
54
-
-
65
-
58
0.4
130
-
2
-
1
-
108
-
dB
%
dBµV
MHz
µV
FM overall system parameters
(S+N)/N
maximum signal plus noise-to-noise V
i
= 3 mV;
∆f
= 22.5 kHz;
ratio of MPXAM output voltage
f
mod
= 1 kHz; DEMP = 1;
B = 300 Hz to 22 kHz; measured
with 75
Ω
dummy antenna and test
circuit
total harmonic distortion
3rd-order intercept point
∆f
= 75 kHz
∆f
= 400 kHz
-
60
-
dB
THD
IP3
-
-
0.5
120
1
-
%
dBµV
TEF6902A_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 March 2008
2 of 106
NXP Semiconductors
TEF6902A
Integrated car radio
Table 1.
Symbol
α
cs
S/N
Quick reference data
…continued
Parameter
channel separation
signal-to-noise ratio
Conditions
f
FMMPX
= 1 kHz
f
MPXAMIN
= 20 Hz to 15 kHz;
referenced to 1 kHz at 91 % FM
modulation; DEMP = 1
FM mode; DEMP = 1; measured
with 15 kHz brick-wall low-pass
filter; f
MPXAMIN
= 200 Hz to 15 kHz
THD = 0.2 %; G
vol
=
−6
dB;
pins INAL, INAR, INAC, INBL,
INBR, INC and IND
configured as non-inverting,
single-ended inputs;
f
audio
= 20 Hz to 10 kHz;
V
i
= 1 V (RMS)
see
Table 83
maximum setting
minimum setting
[1]
[1]
Min
40
70
Typ
-
-
Max
-
-
Unit
dB
dB
Stereo decoder path
THD
total harmonic distortion
-
-
0.3
%
Tone/volume control
V
i(max)
maximum input voltage
2
-
-
V
THD
total harmonic distortion
-
0.02
0.1
%
G
vol
volume/balance gain control
-
-
-
-
-
-
-
-
-
20
−75
1
14
−14
2
14
−14
2
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
G
step(vol)
G
treble
step resolution
treble gain control
TRE[2:0] = 111; TREM = 1
TRE[2:0] = 111; TREM = 0
G
step(treble)
step resolution gain
G
bass
G
step(bass)
[1]
bass gain control
step resolution gain
BAS[3:0] = 0111; BASM = 1
BAS[3:0] = 0111; BASM = 0
The input gain setting ING and the volume setting VOL define the overall volume. The overall range is limited to
−83
dB to +28 dB. For
values > +28 dB the actual value is +28 dB. For overall values <
−83
dB the actual value is mute.
4. Ordering information
Table 2.
Ordering information
Package
Name
TEF6902AH
QFP64
Description
Version
plastic quad flat package; 64 leads (lead length 1.6 mm); body 14
×
14
×
2.7 mm SOT393-1
Type number
TEF6902A_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 19 March 2008
3 of 106
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Product data sheet
Rev. 03 — 19 March 2008
© NXP B.V. 2008. All rights reserved.
TEF6902A_3
XTAL2
XTAL1
51
50
MPXAMOUT
MPXAMIN
60
59
INAL INAR INAC
58
57
56
INBL INBR INC
55
54
53
IND
52
AUDIO STEP INTERPOLATION
ana
FM
STEREO
DECODER
DIV
f
REF
VCOFDB
62
LO2 90°
63
PLL
÷N
BAND
÷M
LO1 90°
Φ
antenna DAA
VCCPLL
PLLGND
i.c.
VTCM
VTC
3
4
5
6
7
pll
pll
i.c.
vcm
vtc
LO1
90°
90°
MIXER
12
32
21
i
FM
LO1
FM/AM
RF AGC
i
AM
rf
13
rf
14
30
15
i.c. dc
16 17
CASCODE
CONTROL
18
19
MIXER
mix1
22
if1
25
MIXER
37
LEVEL
vcc
FM
DEMODULATOR
gnd
vref
FMMIX1IN2
AM IF NOISE
DETECTOR
LO2
AM
DEMODULATOR
5. Block diagram
NXP Semiconductors
49
48
47
46
45
AGND
LFOUT
RFOUT
LROUT
RROUT
VCCVCO
61
vco
÷2
NOISE
BLANKER
HIGH
CUT
DE-EMPHASIS
50
µs/75 µs
INPUT
SELECT
INPUT GAIN,
VOLUME,
BALANCE,
MUTE
soft mute
LOUDNESS,
BASS,
TREBLE
F/R
FADER
hcc
snc
SNC
HCC
VCOTNK
VCOGND
USN
AM NOISE
DETECTOR
MOD
OFFS
FM NOISE
DETECTOR
WAM
SM
tuning
mute
TUNING
STATE
MACHINE
I
2
C-BUS
44
ADDR
64
vco
CPOUT
VTUNE
1
2
MULTIPATH,
LEVEL,
ADJACENT CHANNEL,
MODULATION AND
OFFSET
DETECTION
WEAK SIGNAL AND
FM BANDWIDTH
CONTROL LOGIC
BW
43
SCL
42
swap
41
40
39
38
reset
hold
fast
readhold
SDA
dig2
i.c.
i.c.
dig1
DGND2
i.c.
i.c.
DGND1
TEF6902AH
LEVEL
VCC
GND
VREF
V60
LO2
90°
90°
DAAOUT
FMMIX1IN1
10
11
ifbw
36
35
34
33
MIXER
IF COUNT
6v
IFMAGC
8
TRFAGC
9
20
21
23
24
26
27
28 29
30
31 32
008aaa010
TEF6902A
VCCRF RFGND
IAMAGC VDCPIN
i.c.
VAMCAS
AMMIX1DEC
AMMIX1REF
MIX1OUT2
IF1DEC
IF1IN
AMMIX2OUT1
TAMIFKAGC
AMIF2IN
Integrated car radio
VAMCASFB
AMMIX1IN
MIX1OUT1
IFGND
AMMIX2OUT2
AMIF2DEC
4 of 106
Fig 1. Block diagram of TEF6902AH
NXP Semiconductors
TEF6902A
Integrated car radio
6. Pinning information
6.1 Pinning
60 MPXAMOUT
59 MPXAMIN
64 VCOGND
61 VCCVCO
63 VCOTNK
62 VCOFDB
51 XTAL2
50 XTAL1
CPOUT
VTUNE
VCCPLL
PLLGND
i.c.
VTCM
VTC
IFMAGC
TRFAGC
1
2
3
4
5
6
7
8
9
49 AGND
48 LFOUT
47 RFOUT
46 LROUT
45 RROUT
44 ADDR
43 SCL
42 SDA
41 DGND2
40 i.c.
39 i.c.
38 DGND1
37 LEVEL
36 VCC
35 GND
34 VREF
33 V60
AMIF2IN 32
008aaa011
© NXP B.V. 2008. All rights reserved.
57 INAR
56 INAC
54 INBR
IF1IN 27
58 INAL
55 INBL
53 INC
AMMIX2OUT1 28
TEF6902AH
DAAOUT 10
FMMIX1IN1 11
FMMIX1IN2 12
VCCRF 13
RFGND 14
IAMAGC 15
i.c. 16
VDCPIN 17
VAMCASFB 18
VAMCAS 19
AMMIX1DEC 20
AMMIX1IN 21
AMMIX1REF 22
MIX1OUT1 23
MIX1OUT2 24
IFGND 25
IF1DEC 26
AMMIX2OUT2 29
TAMIFKAGC 30
AMIF2DEC 31
Fig 2. Pin configuration for QFP64
6.2 Pin description
Table 3.
Symbol
CPOUT
VTUNE
VCCPLL
PLLGND
i.c.
VTCM
VTC
IFMAGC
TRFAGC
DAAOUT
TEF6902A_3
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
Description
charge pump output
tuning voltage; 3 mA charge pump output
tuning PLL supply voltage
PLL ground
internally connected; leave open
Intermediate Frequency (IF) filter reference voltage
IF filter center voltage
PIN diode current FM AGC
FM and AM RF AGC time constant
antenna Digital Auto Alignment (DAA) output
Product data sheet
Rev. 03 — 19 March 2008
52 IND
5 of 106
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