Page 1
DATA SH EET
Preliminary specification
File under Integrated Circuits, IC01
1998 Mar 24
INTEGRATED CIRCUITS
TEA6823T; TEA6825T
In Car Entertainment (ICE) car
radio
Page 2
1998 Mar 24 2
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
FEATURES
General
• FM mixer for conversion from FM-IF
1
= 72.2 MHz to
FM-IF2= 10.7 MHz
• AM mixer for conversion from AM-IF1= 10.7 MHz to
AM-IF2= 450 kHz
• FM-IF gain stage
• Crystal oscillator providing mixer frequencies and
references for IF-count and stereo decoder
• FM quadrature demodulator with automatic centre
frequency adjustment and THD compensation
• Level, multi-path and noise detectors
• Soft mute
• Stereo noise cancelling and variable de-emphasis
• PLL stereo decoder
• Noise blanker
• AM IF-amplifier and demodulator
• I2C-bus transceiver with interface to enable direct data
transfer to radio front-end
• IF-count for AM and FM
• Reference frequency generation for PLL synthesizer.
Stereo decoder
• Adjustment-free PLL VCO
• Pilot depending mono/stereo switching
• Analog control of mono/stereo blend
• Adjacent channel noise suppression (114 kHz)
• Pilot cancelled
• Analog control of de-emphasis
• Integrated low-pass filters for 190 kHz adjacent channel
interferences and signal delay for interference
absorption circuit.
GENERAL DESCRIPTION
The TEA6823T together with the TEA6811T and the
TEA6825T together with the TEA6810T form an AM/FM
electronic tuned car radio in a double conversion receiver
concept.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TEA6823T VSO56 plastic very small outline package; 56 leads SOT190-1
TEA6825T VSO56 plastic very small outline package; 56 leads; face down SOT190-2
Page 3
1998 Mar 24 3
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
QUICK REFERENCE DATA
Note
1. IC is operating; specified parameters may deviate from limits which are valid for operating range.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
DDA1
analog supply voltage 1 (+5 V; pin 5) note 1 4.5 5.0 5.5 V
operating range 4.75 5.0 5.25 V
I
DDA1
analog supply current 1 (pin 5) FM mode 17 21 25 mA
AM mode 14 17 21 mA
I
19+I20
total FM mixer output current 4.8 6.0 7.2 mA
I
22+I23
total AM mixer output current 10 12 14 mA
V
DDA2
analog supply voltage 2 (pin 28) note 1 7.0 8.5 10 V
operating range 8.1 8.5 8.9 V
I
DDA2
analog supply current 2 (pin 28) FM mode 2.4 3.0 3.6 mA
V
DDA3
analog supply voltage 3 (+8.5 V; pin 56) note 1 7.0 8.5 10 V
operating range 8.1 8.5 8.9 V
I
DDA3
analog supply current 3 (pin 56) FM mode 19 24 28 mA
AM mode 9.5 12 15 mA
V
DDD
digital supply voltage 1 (+5 V; pin 52) note 1 4.5 5.0 5.5 V
operating range 4.75 5.0 5.25 V
I
DDD
digital supply current (pin 52) note 1 8 10 12 mA
signal plus noise-to-noise ratio FM mode;
∆f = 22.5 kHz at
pins 43 and 47
66 75 − dB
AM mode; m = 0.3 54 60 − dB
THD total harmonic distortion FM mode; ∆f=75kHz − 0.1 0.35 %
AM mode − 1.5 3 %
α
cs
channel separation (adjusted) 40 −−dB
T
amb
operating ambient temperature −40 − +85 °C
SN+
N
--------------
Page 4
1998 Mar 24 4
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
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BLOCK DIAGRAM
n
dbook, full pagewidth
MGK693
DIGITAL
PHASE
DETECTOR
LOGIC
BLOCK
AM
DELOG
AMPLIFIER
PEAK
DETECTOR
AVERAGE
DETECTOR
AVERAGE
DETECTOR
MPX-
DECODER
AND
MATRIX
PILOT
CANCELLER
PILOT
DETECTOR
PHASE
DETECTOR
PEAK
DETECTOR
TEMP
COMPEN-
SATION
CURRENT
SWITCH
AM
R
C
THRESHOLD
CONTROL
MODULATION
DETECTOR
PULSE
FORMER
INTERFERENCE
DETECTOR
NOISE
DETECTOR
FM-LIMITER
AM-AMPLIFIER
LEVEL
DETECTOR
AFC
MPX
BUFFER
LOW
PASS
FILTER
HIGH
PASS
FILTER
SUPPLY
VCO
SOFT
MUTE
AM/FM
SWITCH
LEVEL
AMPLIFIER
÷N5
IF-
AMPLIFIER
IF
COUNTER
REFERENCE
FREQUENCY
20 kHz
BUFFER
ADC
MULTI-
PATH
ADC
LEVEL
I2C-BUS
220 kΩ
82 kΩ
100 kΩ
R41
4.3 kΩ
82 kΩ
100 kΩ
R39
100 kΩ
R40
10 nF
3.3 nF
220 nF
68 pF
27 kΩ
220 nF 22 nF
68 µF
62 pF
L13
HIGH
PASS
60 kHz
÷2/÷6
AM
FM
39214745254843
100 nF
36
100
nF
34 4238332322
1 kΩ
1.5 nF
SFP450
100 kΩ
R51
33 kΩ
33 kΩ
FMSTOP
LEVELADJ
AMSTOP
TOKO
P392BC-1977Z
TOKO
7PSAG-1946D = S
TR5
V
ref
V
ref
V
CC1
RDS
radio mute
radio mute
470 nF
6.8 nF
6.8 nF
820 kΩ
100 nF
120 kΩ
10 Ω
470 nF
38 kHz19 kHz
f
ref
V
int1
V
int2
V
int1
V
int2
26
31
44
30
41
32
56
4
12
5
mono
OSCILLATOR
56
pF
100 nF
100 nF
SFE10.7
10 nF
330 Ω
10.7 MHz
10.7 MHz
10.7 MHz
10.7 MHz
72.2 MHz
ZS369SCS-2144AJ TR3
22 nF
f
ref
37
35
27
28
29
19
20
13
8
10
6
14
9
11
7
54 53 55 40 50 3 46 16 49 15 17 18 51 21 52
24
PHILIPS
9922 521 00098
or Daiwa AT-49
61.5 MHz
10 kΩ10 kΩ
SDA
SCL
SDA
SCL
220 nF 220 nF
100 nF
100
nF
100
nF
100 nF
33 µF
100
nF
47 µF
100
nF
47 µF47 µF
22 µH
+8.5 V
V
CC
+8.5 V
V
CCA
+5 V
V
DDD
+5 V
V
ref
OUTLEFT
OUTRIGHT
V
CC
8.5 V
V
DDD
+5 V
10 kΩ
10 kΩ
12 kΩ
33 kΩ
3.3 MΩ
2.2 MΩ
1 MΩ
1.2 MΩ
330 Ω
330 Ω
level
TEA6823T
TEA6825T
tuning
mute
Fig.1 Block diagram.
Page 5
1998 Mar 24 5
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
PINNING
SYMBOL PIN DESCRIPTION
QDET1 1 demodulator tank 1
QDET2 2 demodulator tank 2
TSWITCH 3 time switch input
AGND 4 analog ground
V
DDA1
5 analog supply voltage 1 (+5 V)
HFBUS1 6 HF bus 1 output;
pull-up to +5 V
HFBUS2 7 HF bus 2 output;
pull-up to +5 V
XTAL1 8 crystal oscillator 1
XTAL2 9 crystal oscillator 2
f
ref(p)
10 PLL reference frequency
output (p)
f
ref(n)
11 PLL reference frequency
output (n)
I
ref
12 reference current
FMIF1IN1 13 72 MHz FM-IF input 1
FMIF1IN2 14 72 MHz FM-IF input 2
TSDR 15 time constant for SDR
TSDS 16 time constant for SDS
V
SDS
17 SDS control voltage input
V
SDR
18 SDR control voltage input
FMIF2OUT1 19 FM mixer output 1
FMIF2OUT2 20 FM mixer output 2
V
ref
21 reference voltage output
AMIF2OUT1 22 AM mixer output 1
AMIF2OUT2 23 AM mixer output 2
FMAMDEC 24 FM/AM 10.7 MHz decoupling
PHASEDET 25 phase detector output
PILDET 26 pilot detector output
FMAM10.7 27 FM/AM 10.7 MHz input
V
DDA2
28 analog supply voltage 2
FMIFAMPOUT 29 FM-IF amplifier output
AFGND 30 AF ground
DEEMPHR 31 de-emphasis capacitor right
DEEMPHL 32 de-emphasis capacitor left
AMIF2IN1 33 AM-IF
2
input 1
AMIF2IN2 34 AM-IF
2
input 2
FMIN2 35 FM limiter input
DCFEED 36 DC feed FM limiter
FMIN1 37 FM limiter input
LEVELADJ 38 level adjustment input
C
AFC
39 AFC capacitor
MPBUF 40 multi-path buffer time constant
OUTLEFT 41 AF output left
FMSTOP 42 FMSTOP adjustment input
RDS/AMSTOP 43 MPX for RDS/AMSTOP
adjustment input
OUTRIGHT 44 AF output right
MPXIN 45 stereo decoder MPX input
THRES 46 threshold
MPXOUT 47 FM demodulator MPX output
AMAFOUT 48 AM demodulator AF output
V
mute/AML
49 mute voltage/AM level
LEVELUNWEIG 50 unweighted level output
IAC
CONTR
51 IAC control voltage
V
DDD
52 digital supply voltage
SDA 53 serial data input/output;
pull-up to +5 V
SCL 54 serial clock input;
pull-up to +5 V
DGND 55 digital ground
V
DDA3
56 analog supply voltage 3
(+8.5 V)
SYMBOL PIN DESCRIPTION
Page 6
1998 Mar 24 6
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.2 Pin configuration for TEA6823T.
handbook, halfpage
TEA6823T
MHA700
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
V
DDA3
DGND
SCL
V
DDD
IAC
CONTR
V
mute/AML
SDA
LEVELUNWEIG
AMAFOUT
MPXOUT
THRES
MPXIN
OUTRIGHT
RDS/AMSTOP
FMSTOP
OUTLEFT
MPBUF
C
AFC
LEVELADJ
FMIN1
DCFEED
FMIN2
AMIF2IN2
AMIF2IN1
DEEMPHL
DEEMPHR
AFGND
FMIFAMPOUT
V
DDA2
FMAM10.7
PILDET
PHASEDET
FMAMDEC
AMIF2OUT2
AMIF2OUT1
V
ref
FMIF2OUT2
FMIF2OUT1
V
SDR
V
SDS
TSDS
TSDR
FMIF1IN2
FMIF1IN1
I
ref
f
ref(n)
f
ref(p)
XTAL2
XTAL1
HFBUS2
HFBUS1
V
DDA1
AGND
TSWITCH
QDET2
QDET1
Fig.3 Pin configuration for TEA6825T (top view).
handbook, halfpage
TEA6825T
MHA701
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
V
DDA3
DGND
SCL
SDA
V
DDD
IAC
CONTR
LEVELUNWEIG
V
mute/AML
AMAFOUT
MPXOUT
THRES
MPXIN
OUTRIGHT
RDS/AMSTOP
FMSTOP
OUTLEFT
MPBUF
C
AFC
LEVELADJ
FMIN1
DCFEED
FMIN2
AMIF2IN2
AMIF2IN1
DEEMPHL
DEEMPHR
AFGND
FMIFAMPOUT
QDET1
QDET2
TSWITCH
AGND
V
DDA1
HFBUS1
HFBUS2
XTAL1
XTAL2
f
ref(p)
f
ref(n)
I
ref
FMIF1IN1
FMIF1IN2
TSDR
TSDS
V
SDS
V
SDR
FMIF2OUT1
FMIF2OUT2
V
ref
AMIF2OUT1
AMIF2OUT2
FMAMDEC
PHASEDET
PILDET
FMAM10.7
V
DDA2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
FUNCTIONAL DESCRIPTION
Stereo decoder
By changing the value of the input resistor at pin 12 the
MPX input can be adapted to the level of the FM
demodulator output (see Fig.16).
A 3rd order low-pass filter (f
g
= 90 kHz) at the MPX input
provides an extra 190 kHz ACI suppression.
An interference gate is connected at the MPX demodulator
outputs. For AM the VCO is switched off.
Page 7
1998 Mar 24 7
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
Note
1. Charge device model class B: equivalent to discharging a 200 pF capacitor via a 0 Ω series resistor.
CHARACTERISTICS
V
56-4=V28-4
= 8.5 V; V
5-4=V52-55
=5V; T
amb
=25°C; f
mod
= 1 kHz; deviation = 22.5 kHz; Rg=50Ω; V
37-35
=10mV;
with de-emphasis = 50 µs; coil quality = 15; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
DDA1
analog supply voltage 1 (pin 5) −0.3 +6.5 V
V
DDA2
analog supply voltage 2 (pin 28) −0.3 +12 V
V
DDA3
analog supply voltage 3 (pin 56) −0.3 +12 V
V
DDD
digital supply voltage (pin 52) −0.3 +6.5 V
T
stg
storage temperature −55 +150 °C
T
amb
operating ambient temperature −40 +85 °C
V
es
electrostatic handling note 1
pins 8 and 9 −100 +100 V
all other pins −300 +300 V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Currents
I
DDA1
analog supply current 1 (pin 5) FM mode 17 21 25 mA
AM mode 14 17 21 mA
I
DDA2
analog supply current 2 (pin 28) FM mode 2.4 3.0 3.6 mA
I
DDA3
analog supply current 3 (pin 56) FM mode 19 24 28 mA
AM mode 9.5 12 15 mA
I
DDD
digital supply current (pin 52) 8 10 12 mA
I
19+I20
total FM mixer output current 4.8 6.0 7.2 mA
I
22+I23
total AM mixer output current AM mode 10 12 14 mA
FM-IF path; see Fig.4
V
19-20 max(p-p)
maximum output voltage
(peak-to-peak value)
12.0 14.0 − V
I
19
; I
20
mixer bias current 2.4 3.0 3.6 mA
mixer leakage current in AM position −− 2 µA
I
19IF2/V13-14IF1
conversion gain 1.65 1.9 2.2 mS
R
i
input resistance (pins 13 to 14) 5 7 − kΩ
C
i
input capacitance (pins 13 to 14) − 3 4.5 pF
R
opt
optimum generator resistance − 1.2 − kΩ
R
o
output resistance (pins 19 to 20) 15 20 − kΩ
C
o
output capacitance (pins 19 to 4
and pins 20 to 4)
− 12 14 pF
IP3 third order intermodulation 114 124 − dBµV
Page 8
1998 Mar 24 8
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Oscillator
f
osc
oscillator frequency − 61.5 − MHz
∆f
osc
oscillator frequency spread −− 250 Hz
∆f
osc
/∆T temperature dependence of
oscillator frequency
crystal type Philips
9922 521 00098
− 30 × 10−6− K
−1
R
1
crystal motional resistance −− 70 Ω
C
0
crystal shunt capacitance −− 5pF
FM-IF
2
amplifier
V
27-24 max(rms)
maximum input voltage for 1 dB
compression point (RMS value)
80 110 − mV
V
29-4 max(rms)
maximum output voltage
(RMS value)
220 320 − mV
V
29-4/V27-24
amplifier gain RL= 330 Ω; see Fig.5 9 12 15 dB
∆V
29-4/V27-24
gain temperature dependence −25 °C<T
amb
< +85 °C − 0.1 − dB/K
R
i
input resistance (pins 27 to 24) 300 330 360 Ω
C
i
input capacitance (pins 27 to 4) −− 5pF
R
o
output resistance (pin 29) 300 330 360 Ω
C
o
output capacitance (pins 29 to 4) −− 5pF
FM-IF
2
limiter
V
o 1-2(p-p)
limiter output voltage
(peak-to-peak value)
500 700 − mV
V
1-2/V37-35
limiter gain see Fig.6 − 80 − dB
C
i
input capacitance (pins 37 to 4) −− 5pF
R
o
output resistance (pins 1 to 2) −− 1.0 kΩ
C
o
output capacitance (pins 1 to 2) 10 15 20 pF
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Page 9
1998 Mar 24 9
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
FM demodulator
V
47-4(rms)
MPX output voltage (RMS value) 160 200 240 mV
V
43-4(rms)
MPX output voltage for RDS
(RMS value)
160 200 240 mV
V
37-35(rms)
start of limiting voltage (RMS value) αAF= −3dB − 25 40 µV
V
37-35(rms)
input voltage for signal plus
noise-to-noise ratio (RMS value)
see Fig.7 for pin 47
(MPXOUT) and Fig.8 for
pin 43 (RDS/AMSTOP)
− 30 45 µV
− 70 100 µV
∆V
43DC
residual DC-offset voltage ∆L
demod
= typical value
10 µV<V
37-35
<80µV − 100 1000 mV
80 µV<V
37-35
< 800 mV − 10 30 mV
V
43FM/V43AM
AM suppression ∆f = 22.5 kHz;
f
modAM
= 1 kHz;
mAM= 30%;
V
37-35
= 3 to 300 mV
50 60 − dB
V
47FM/V47AM
AM suppression V
37-35
= 1 to 300 mV 50 60 − dB
∆V
43-44AFCdis
/∆V
43-44AFCactive
demodulator frequency control
voltage (AFC) efficiency
at 100 kHz detune from
exact tuning
28 32 − dB
R
o
output resistance (pin 47) −− 3kΩ
output resistance (pin 43) −− 1.5 kΩ
AF bandwidth (pin 43) 200 −−kHz
signal plus noise-to-noise ratio 66 75 − dB
THD total harmonic distortion detuning ≤50 kHz;
∆f = 75 kHz; f
mod
= 1 kHz
without de-emphasis;
L
demod
= typical value
pin 43;
V
37-35
= 300 µV
to 800 mV
− 0.1 0.35 %
pin 47;
V
37-35
= 1 to 800 mV
− 0.1 0.35 %
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
SN+
N
--------------
26 dB=
SN+
N
--------------
46 dB=
SN+
N
--------------
Page 10
1998 Mar 24 10
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Unweighted voltage level
V
50-4
unweighted voltage level see Fig.9; V38= 2.52 V
V
37-35
≤ 2.5 µV 1.6 2.2 3.0 V
V
37-35
= 1.0 mV 2.7 3.4 4.7 V
∆V
50-4
/∆V
37-35
slope of unweighted voltage level 100 µV (RMS) ≤ V
37-35
< 300 mV
temperature
compensation off
0.75 0.9 1.05 V/20 dB
temperature
compensation on
0.6 0.75 0.9 V/20 dB
∆V
50-4
/VK temperature dependence V
37-35
=1mV
temperature
compensation off
− 5.0 − mV/VK
temperature
compensation on
− 2.0 − mV/VK
I
50(max)source
maximum output source current 0.3 −−mA
I
50(max)sink
maximum output sink current −50 −−µA
R
o50
output resistance −− 300 Ω
ADJUSTMENT OF UNWEIGHTED VOLTAGE LEVEL AND V
mute/AML
; note 1
∆V
50
adjusting range voltage V
37-35
= 10 mV (RMS) −1.8 − +1.8 V
V
38-4
internal bias voltage − 2.6 − V
∆V
50-4
/∆V
38-4
adjusting gain −−0.9 −−
R
i38
input resistance − 80 − kΩ
MUTING DEPENDENCE ON ADJUST OF LEVEL UNWEIGHTED VOLTAGE; note 2
V
43/V47
start of mute V49/V21= 0.625 1 3 7 dB
mute slope V
43/V47
= −6dB − 25 − dB/V
Soft mute, time constant control, mono/stereo blend and high-cut control; see Fig.22
M
UTE VOLTAGE; note 3
V
49-4
mute voltage V38= 2.52 V
V
37-35
< 2.5 µV 1.8 2.2 3.2 V
V
37-35
= 1.0 mV 2.7 3.4 4.7 V
∆V
49-4
/∆V
37-35
slope of mute voltage 100 µV (RMS) ≤ V
37-35
< 300 mV
0.75 0.9 1.05 V/20 dB
∆V
49-4
/VK temperature dependency V
37-35
=1mV − 5.0 − mV/VK
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
∆V43V47⁄
∆V
49
--------------------------
Page 11
1998 Mar 24 11
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
ATTACK AND DECAY TIME FOR MUTE VOLTAGE
I
ch
charge current pin 3 connected to GND − 3.5 −µA
pin 3 connected to pin 5 − 150 −µA
I
dch
discharge current pin 3 connected to GND −−4.0 −µA
pin 3 connected to pin 5 −−170 −µA
∆f muting activated by 60 kHz FM
interference
V49<3V; V
37-35
= 3 mV;
f
mod
= 60 kHz
pin 3 connected to GND;
V
43/V47
=9dB
− 40 − kHz
pin 3 connected to pin 5;
V
43/V47
=6dB
− 40 − kHz
V
43/V47
maximum mute depth by 60 kHz
FM interference
pin 3 connected to GND − 15 − dB
pin 3 connected to pin 5 − 10 − dB
T
IME CONSTANT FOR MONO/STEREO BLEND VOLTAGE; note 4
I
ch
charge current V
37-35
=3mV;
pin 3 connected to GND
− 0.6 −µA
V
37-35
=3mV;
pin 3 connected to pin 5
− 23 −µA
I
dch
discharge current V
37-35
=3mV;
pin 3 connected to GND
−−17 −µA
V
37-35
=3mV;
pin 3 connected to pin 5
−−750 −µA
m mono/stereo blend activated
by 20 kHz AM interference
V
16
<2V; V
37-35
= 3 mV;
R
L16
>50MΩ;
f
mod
= 20 kHz;
data byte 2 bit5=0
pin 3 connected to GND − 45 − %
pin 3 connected to pin 5 − 45 − %
data byte 2 bit5=1
pin 3 connected to GND − 55 − %
pin 3 connected to pin 5 − 55 − %
∆f mono/stereo blend activated
by 60 kHz FM interference
V16<2V; V
37-35
= 3 mV;
R
L16
>50MΩ;
f
mod
= 60 kHz
pin 3 connected to GND − 50 − kHz
pin 3 connected to pin 5 − 50 − kHz
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Page 12
1998 Mar 24 12
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
TIME CONSTANT FOR HIGH-CUT CONTROL VOLTAGE SDR; note 5
I
ch
charge current V
37-35
=3mV;
pin 3 connected to GND
− 0.6 −µA
V
37-35
=3mV;
pin 3 connected to pin 5
− 41 −µA
I
dch
discharge current V
37-35
=3mV;
pin 3 connected to GND
−−0.7 −µA
V
37-35
=3mV;
pin 3 connected to pin 5
−−44 −µA
m high-cut control activated
by 20 kHz AM interference
V
15
<2V; V
37-35
= 3 mV;
R
L15
>50MΩ;
f
mod
= 20 kHz
pin 3 connected to GND − 45 − %
pin 3 connected to pin 5 − 45 − %
∆f high-cut control activated
by 60 kHz FM interference
V
15
<2V; V
37-35
= 3 mV;
R
L15
>50MΩ;
f
mod
= 60 kHz
pin 3 connected to GND − 50 − kHz
pin 3 connected to pin 5 − 50 − kHz
M
ULTI-PATH DETECTOR
f
MP
multi-path detector band-pass
centre frequency
− 20 − kHz
B
MP
band-pass bandwidth 7.0 −−kHz
Reference voltage
V
21-4
output voltage I21= −1 mA 4.5 5.1 5.7 V
∆V
21-4
temperature dependence − 3.3 − mV/VK
I
21
output current −− 1mA
AM-IF path; see Fig.14 and notes 6 and 7
V
22-23 max(p-p)
maximum output voltage
(peak-to-peak value)
12 15 − V
I
22
, I
23
mixer bias current 5.0 6.0 7.0 mA
mixer leakage current in FM position −− 2 µA
I
22IF2/V27-24IF1
conversion transconductance 2.2 2.7 3.4 mS
R
27-24
input resistance 300 330 360 Ω
C
27-24
input capacitance − 58pF
R
22-23
output resistance 10.0 20.0 − kΩ
C
22-23
output capacitance − 510pF
IP3 third order intermodulation − 137 − dBµV
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Page 13
1998 Mar 24 13
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Notes to the characteristics
1. For typical adjusting range see Figs 10 and 13.
2. For typical curve see Fig.11.
3. The static mute voltage follows the unweighted voltage level as function of FM-IF2 voltage and level adjustment
voltage V
38-4
. It additionally depends on multi-path level, noise (adjacent channel interferences) and the position of
TSWITCH (pin 3). For typical curve for mute voltage dependence see Fig.12.
4. The mono/stereo blend voltage is generated as a function of FM-IF2 voltage, multi-path level, noise and position of
TSWITCH.
5. The high-cut control voltage is generated as a function of FM-IF2 voltage, multi-path level, noise and position of
TSWITCH.
6. f
IF1
= 10.7 MHz; f
IF2
= 450 kHz for AM mixer.
7. The AM oscillator signal is generated by division of the 61.5 MHz crystal oscillator. Two divider ratios programmable
by the I2C-bus: divide by 6 (AM-IF1= 10.7 MHz); divide by 2 (AM-IF1= 30 MHz).
8. For typical AM level curve see Fig.15.
9. For AM detector; f
AMIF2
= 450 kHz; f
mod
= 400 Hz; m = 30%.
AM
DETECTOR; notes 8 and 9
V
48-4(rms)
AF output level (RMS value) R
L48
> 500 kΩ;
100 µV ≤ V
33-34
≤ 300 mV
190 240 290 mV
V
33-34(rms)
sensitivity voltage (RMS value) − 50 75 µV
− 200 400 µV
AM-IF
2
minimum input voltage
(RMS value)
THD ≤ 5%; m = 0.8 −− 100 µV
AM-IF
2
maximum input voltage
(RMS value)
THD ≤ 5%; m = 0.8 800 −−mV
R
33-34
IF2 input resistance 1.8 2.0 2.2 kΩ
C
24-23
IF2 input capacitance − 10 15 pF
R
o48
output resistance 27 33 39 kΩ
C
o48
output capacitance −− 10 pF
signal plus noise-to-noise ratio 54 60 − dB
THD total harmonic distortion m = 0.8;
300 µV ≤ V
33-34
≤ 200 mV
− 1.5 3.0 %
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
SN+
N
--------------
26 dB=
SN+
N
--------------
46 dB=
SN+
N
--------------
Page 14
1998 Mar 24 14
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
STEREO DECODER CHARACTERISTICS
Input signal (∆f = 75 kHz) V
MPX(p-p)
= 1.7 V; f
mod
= 1 kHz; de-emphasis time constant t = 50 µs; nominal input resistor
(pin 45) Ri= 168 kΩ; T
amb
=25°C; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
44-4(rms)
;
V
41-4(rms)
AF output voltage (RMS value) 800 900 1000 mV
V
44-4
; V
41-4
DC output voltage 3.1 3.6 4.1 V
I
44(max)
; I
41(max)
maximum output current 150 −−µA
V
44-4/V41-4
difference of output voltage −1 − +1 dB
R
o(44)
; R
o(41)
output resistance −−600 Ω
R
Lmin
minimum load resistor 12 −−kΩ
α
cs
channel separation (adjusted) 40 −−dB
signal plus noise-to-noise ratio f = 20 Hz to 15 kHz 74 80 − dB
THD total harmonic distortion − 0.1 0.3 %
MPX input overdrive margin THD = 1% 4 −−dB
Carrier and harmonic suppression at the output; note 1
α
19
pilot signal f = 19 kHz − 50 − dB
α
38
subcarrier f = 38 kHz − 50 − dB
α
57
f = 57 kHz − 50 − dB
α
76
f = 76 kHz − 60 − dB
α
2
intermodulation f
mod
= 10 kHz; f
spur
= 1 kHz − 60 − dB
α
3
f
mod
= 13 kHz; f
spur
= 1 kHz − 58 − dB
α
57
traffic radio (ARI) f = 57 kHz − 70 − dB
α
67
subsidiary communications
authorization
f = 67 kHz 70 −−dB
α
114
adjacent channel frequency f = 114 kHz − 80 − dB
α
190
f = 190 kHz − 70 − dB
RR ripple rejection at output f
r
= 100 Hz; Vr= 100 mV (eff.) − 30 − dB
Mono/stereo control
V
i(pil)
pilot threshold voltage stereo on − 24 30 mV
mono on 8 20 − mV
∆V
i(pil)
switch hysteresis V
ion/Vioff
− 2 − dB
External mono/stereo control; note 2
V
17
− 0.75V
21
control voltage channel separation see Fig.17
V
43/V47
=6dB −−110 − mV
V
43/V47
=16dB −−40 − mV
SN+
N
--------------
Page 15
1998 Mar 24 15
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Muting functions (mute via I2C-bus)
∆V
44
, ∆V
41
DC offset voltage tune mute −50 − +50 mV
radio mute (in combination
with tune mute)
−400 − +400 mV
α
mute
tune mute 60 −−dB
radio mute (in combination with
tune mute)
80 −−dB
High-cut control; see Fig.18
V
18
− 0.75V
21
control voltage note 3
t
de-emph
=50µs0−−mV
t
de-emph
=80µs −300 −−mV
t
de-emph
control range of de-emphasis 50 − 80 µs
Voltage controlled oscillator; note 4
f
osc
oscillator frequency 225 228 231 kHz
Noise blanker
I
NTERFERENCE DETECTION FULLY INTERNAL FROM LEVEL DETECTOR
t
sup
interference suppression time 40 50 −µs
TRIGGER THRESHOLD CONTROL
I
ch
charge current (into +4 V) − 45 −µA
I
dch
discharge current (from +8.5 V) −−900 −µA
TRIGGER SENSITIVITY MEASUREMENT WITH PULSED MODULATION OF FM-IF2; see Figs 19 and 20
V
37-35(p)
trigger sensitivity for test signal 1
(peak value)
V38= 2.52 V; note 5 −−0.5 mV
V
38
= 2.52 V; note 6 100 −−mV
trigger sensitivity for test signal 2
(peak value)
V
38
= 2.52 V; note 6 5.0 −−mV
V
38
= 2.52 V; note 6 100 −−mV
V
51
trigger threshold variation with
frequency modulation of FM-IF
2
and f
mod
= 15 kHz (pin 51)
V
37-35
= 100 mV; ∆f=0kHz − 6.4 − V
∆V
51
V
37-35
= 100 mV; ∆f=40kHz − 250 − mV
V
37th/V37(3dB)
shift of threshold for triggering
from MPX signal
I46= 0 14 20 26 dB
∆V
37th
/∆I
46
shift of threshold as function of I
46
−0.32 −0.25 −0.16 dB/µA
V
46
bias voltage (pin 46) I46< 0 4.0 4.3 4.7 V
I
46
> 0 5.3 5.7 6.1 V
I
offset
gate input offset current at pins 31
and 32 during suppression pulse
duration
− 20 50 nA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Page 16
1998 Mar 24 16
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Notes to the stereo decoder characteristics
1. The following equations give the values for the carrier and harmonic suppression at the output:
2. The stereo decoder can be set to mono via the I
2
C-bus. Pilot presence indication via the I2C-bus.
3. The nominal de-emphasis value can be changed to 75 µs with C31; C32=10nF.
4. The VCO is adjusted by means of a digital auxiliary PLL.
5. Noise blanker does not trigger.
6. Noise blanker triggers.
α
2
V0signal()(at1kHz)
V
0
spurious()(at 1 kHz)
------------------------------------------------------------------
= f
s
210kHz×()19 kHz–=
α
3
V0signal()(at 1 kHz)
V
0
spurious()(at1kHz)
------------------------------------------------------------------
= f
s
313kHz×()38 kHz–=
α57(ARI)
V
0
signal()(at 1 kHz)
V
0
spurious()at 1 kHz 23 Hz±()
---------------------------------------------------------------------------------------------- -
=
α
67
V0signal()(at1kHz)
V
0
spurious()(at9kHz)
------------------------------------------------------------------
= f
s
238kHz×()67 kHz–=
α
114
V0signal()(at 1 kHz)
V
0
spurious()(at 4 kHz)
------------------------------------------------------------------
= f
s
110 kHz 3 38 kHz×()–=
α
190
V0signal()(at 1 kHz)
V
0
spurious()(at 4 kHz)
------------------------------------------------------------------
= f
s
186 kHz 5 38 kHz×()–=
Page 17
1998 Mar 24 17
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
CHARACTERISTICS FOR ANALOG-TO-DIGITAL CONVERTERS (ADCs) FOR LEVEL AND
MULTI-PATH VOLTAGES
Notes
1. The FM level information V
50-3
is analog-to-digital converted with 4 bits.
2. The AM level information V
49-4
is analog-to-digital converted with 4 bits.
3. The multi-path information V
40-4
isanalog-to-digital converted with 3 bits covering an IF2 amplitude modulation range
m ≤ 0.6; f
mod
= 20 kHz.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
ADC for FM level information; note 1
∆V
37-35
analog-to-digital conversion
step size 2 4 8 dB/step
level range 43 56 69 dB
FM STOP
∆V
stop
variation of stop level as function of V
42-4
− 16 − dB/V
ADC for AM level information; note 2
∆V
33-34
analog-to-digital conversion step size 2 4 8 dB/step
∆V
33-34
analog-to-digital conversion level range 43 56 69 dB
AM STOP
∆V
stop
variation of stop level as function of V
43-4
− 16 − dB/V
ADC for multi-path information; note 3
m multi-path conversion step 0 −−5%
step 1 − 15 − %
step 2 − 22 − %
step 3 − 28 − %
step 4 − 34 − %
step 5 − 40 − %
step 6 − 46 − %
step 7 − 52 60 %
Page 18
1998 Mar 24 18
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.4 Test circuit FM mixer.
handbook, full pagewidth
MHA702
330
Ω
GENERATOR
R&S SMPC
Rg = 50 Ω
1 : 1
f
IF1
= 72.2 MHz
f
IF2
= 10.7 MHz
13
14
19
20
+8.5 V
3.5
3.5
2
LOW NOISE
AMPLIFIER
AVD 704201
(S/N = 103 dB)
SPECTRUM
ANALYZER
HP8568A
TEA6823T
TEA6825T
Fig.5 Test circuit IF-amplifier.
handbook, full pagewidth
MHA703
330
Ω
GENERATOR
R&S SMPC
Rg = 50 Ω
PASSIVE
ATTENUATOR
–6 dB
RIN = 50 Ω
R
OUT
= 330 Ω
27
24
29
4
OSCILLOSCOPE
PM3295A
10 nF
10 nF
10 nF
TEA6823T
TEA6825T
Fig.6 Test circuit limiter gain.
handbook, full pagewidth
MHA704
50 Ω
GENERATOR
R&S SMPC
Rg = 50 Ω
37
35
1
2
OSCILLOSCOPE
PM3295A
10 nF
100 nF
10 nF
10 nF
TEA6823T
TEA6825T
Page 19
1998 Mar 24 19
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
handbook, full pagewidth
20
–80
–60
10
–3
10
–2
10
–1
11010
2
(2)
(1)
10
3
MHA247
0
–40
–20
V
37-35
(mV)
V
47-4
(dB)
Fig.7 Signal and noise of muted MPX voltage.
(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f
mod
= 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.
handbook, full pagewidth
20
–80
–60
10
–3
10
–2
10
–1
11010
2
(2)
(1)
10
3
MHA248
0
–40
–20
V
37-35
(mV)
V
43-4
(dB)
Fig.8 Signal and noise of unmuted MPX voltage.
(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f
mod
= 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.
Page 20
1998 Mar 24 20
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.9 Unweighted voltage level (typical curve).
(1) Temperature compensation off.
(2) Temperature compensation on.
handbook, full pagewidth
10
0
2
10
–3
10
–2
10
–1
11010
2
(2)
(1)
10
3
MHA249
8
4
6
V
37-35
(mV)
V
50-4
(V)
Fig.10 Adjustment range of unweighted voltage level.
handbook, full pagewidth
10
0
2
10
–3
10
–2
10
–1
11010
2103
MHA250
8
4
6
V
37-35
(mV)
V
50-4
(V)
Page 21
1998 Mar 24 21
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
handbook, full pagewidth
20
–80
–60
10
–3
10
–2
10
–1
11010
2
(1)
(4)
(4)
10
3
MHA251
0
–40
–20
V
37-35
(mV)
V
47-4
(dB)
(3) (5)
(2)
(5)
(3)
Fig.11 Muting dependence of unweighted voltage level (typical curve).
(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f
mod
= 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.
(3) Level adjustment set to α
3dB
at 0.6 mV.
(4) Level adjustment set to α
3dB
at 0.4 mV.
(5) Level adjustment set to α
3dB
at 1 mV.
Page 22
1998 Mar 24 22
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.12 Typical mute voltage as function of FM-IF2 voltage.
handbook, full pagewidth
10
0
2
10
–3
10
–2
10
–1
11010
2103
MHA252
8
4
6
V
37-35
(mV)
V
49-4
(V)
Fig.13 Adjustment range mute voltage.
handbook, full pagewidth
10
0
2
10
–3
10
–2
10
–1
11010
2103
MHA213
8
4
6
V
37-35
(mV)
V
49-4
(V)
Page 23
1998 Mar 24 23
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.14 Test circuit AM mixer.
handbook, full pagewidth
270 Ω
MHA705
2.2
kΩ
27
24
22
23
+8.5 V
7
7
20
LOW NOISE
AMPLIFIER
AVD 704201
(S/N = 103 dB)
SPECTRUM
ANALYZER
HP8568A
GENERATOR
R&S SMPC
Rg = 50 Ω
f
IF1
= 10.7 MHz
10 nF
22
nF
10 nF
TEA6823T
TEA6825T
handbook, full pagewidth
20
–80
–60
10
–3
10
–2
10
–1
11010
2103
MHA214
0
–40
–20
V
33-34
(mV)
V
48-4
(dB)
8
0
6
2
4
THD
(%)
(1)
(2)
(3)
(4)
Fig.15 Signal, noise and distortion of AM AF output voltage and AM voltage level (typical curve).
(1) AF: f = 450 kHz; m = 30%; f
mod
= 400 Hz.
(2) Noise: unweighted B = 250 Hz to 15 kHz.
(3) THD m = 80%.
(4) AM level voltage.
Page 24
1998 Mar 24 24
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.16 Adaption of MPX input to FM-demodulator output level by variation of the input resistor.
handbook, full pagewidth
300
4
3
1
0
0 100 200
MHA215
2
R
IN(pin20)
(kΩ)
V
I,MPX(p-p)
(V)
Fig.17 Channel separation as function of control voltage.
handbook, full pagewidth
0
40
30
10
0
–300 –200 –100
MHA706
20
control voltage V17 – 0.75V21 (mV)
α
cs
(dB)
Page 25
1998 Mar 24 25
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.18 High-cut with f
mod
= 10 kHz as function of control voltage.
handbook, full pagewidth
0
0
–1
–3
–4
–300 –200 –100
MHA707
–2
control voltage V18 – 0.75V21 (mV)
(dB)
Page 26
1998 Mar 24 26
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.19 Test signal 1 for interference detection from level detector.
handbook, full pagewidth
fIF = 10.7 MHz
t = 5 µs
tr = tf = 0.5 µs
t
rep
= 1 ms
A
V
37-35
t
0.6 A
MHA210
Fig.20 Test signal 2 for interference detection from level detector.
handbook, full pagewidth
t = 5 µs
tr = tf = 0.5 µs
t
rep
= 1 ms
fIF = 10.7 MHz
A
V
37-35
t
0.2 A
MHA211
Page 27
1998 Mar 24 27
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
I2C-BUS AND I2C-BUS CONTROLLED FUNCTIONS
I
2
C-bus specification
The standard I2C-bus specification is expanded by the
following definitions.
Structure of the I2C-bus logic: slave transceiver with auto
increment and expansion to switch a direct transfer of all
transmissions to an output for the radio front-end IC
(TEA6810T respectively TEA6811T).
Subaddresses are not used.
D
ATA TRANSFER FOR THE TEA6823T AND THE TEA6825T
Data sequence:
• Address
• Byte 1
• Byte 2.
The data transfer may be in this order only. The transfer
direction of the data bytes is defined by the LSB of the
address.
The data becomes valid at the output of the internal
latches with the acknowledge of each byte. A STOP
condition after any byte can shorten transmission times.
When writing to the transceiver by using the STOP
condition before completion of the whole transfer:
• The remaining bytes will contain the old information
• If the transfer of a byte was not completed, this byte is
lost and the previous information is available.
D
ATA TRANSFER TO AN OUTPUT OF THE FRONT-END IC
A data bit in the transceiver of the TEA6823T or TEA6825T
enables or disables a direct transfer of all transmissions to
an interface stage for the front-end IC.
For a transmission to the front-end IC the address and the
data format of the front-end IC has to be used.
Remark: the pull-up resistors for the front-end interface
(pins 6 and 7) should not be connected to the 5 V supply
voltage of the front-end IC, otherwise a bus pull-down
(pin 53) can occur during switching off the front-end supply
when the interface stage is enabled.
D
ATA TRANSFER TO THE IF IC
Data transfer to the IF IC (TEA6823T or TEA6825T) is
independent of the state of interface stage for the front-end
IC.
Table 1 Structure of the I
2
C-bus
Table 2 Data to be received by the IC for data byte 1
Table 3 Reference frequency setting in data byte 1;
see Table 1
DESCRIPTION SPECIFICATION
Bus address of the
TEA6823T and the
TEA6825T
1100001X
Subaddress not used
Hardware (pin)
programmable
address bits
not available
Default settings by
power-on reset
data byte 1 bits 4 to 7 are set to
logic 0; all other bits are random
BIT DESCRIPTION RESULT
0 switch for mono bit 0 = 1
switch for stereo bit 0 = 0
1 LSB reference frequency for
synthesizer
2 reference frequency for
synthesizer
3 MSB reference frequency for
synthesizer
4 tuning mute off bit 4 = 1
tuning mute on bit 4 = 0
5 SDS/SDR hold off bit 5 = 1
SDS/SDR hold on bit 5 = 0
6 radio mute off bit 6 = 1
radio mute on bit 6 = 0
7I
2
C-bus to front-end ENABLED bit 7 = 1
I
2
C-bus to front-end DISABLED bit 7 = 0
BIT 3 BIT 2 BIT 1 FREQUENCY SETTING
0003kHz
0015kHz
0 1 0 10 kHz
0 1 1 15 kHz
1 0 0 25 kHz
1 0 1 50 kHz
1 1 0 not defined
1 1 1 not defined
Page 28
1998 Mar 24 28
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Table 4 Data to be received by the IC for data byte 2
Table 5 Data to be transmitted by the IC for data byte 1;
note 1
Note
1. The analog-to-digital conversion for multi-path and
level will be done during a transmission of any address
to the I
2
C-bus.
BIT DESCRIPTION RESULT
0 AM/FM; AM mode bit0=0
AM/FM; FM mode bit0=1
1 divider for AM mixer; divide by 2 bit1=0
divider for AM mixer; divide by 6 bit1=1
2 measure time IF-count; 40 ms bit2=0
measure time IF-count; 4 ms bit2=1
3 SDR off bit3=0
SDR on bit3=1
4 IF-prescaler division rate;
divide by 200
bit4=0
IF-prescaler division rate;
divide by 25
bit4=1
5 sensitivity unchanged bit5=0
multi-path sensitivity switch; less
sensitivity by an offset of ∆m = 10%
bit5=1
6 temperature compensation of
unweighted voltage level;
temperature coefficient as specified
in Chapter “Characteristics”
temperature compensation off bit6=0
temperature compensation on bit6=1
7 noise blanker deactivated by high
modulation
bit7=0
noise blanker not deactivated bit7=1
BIT DESCRIPTION
0 bit 1 level information
1 bit 2 level information
2 MSB (bit 3) level information
3 LSB multi-path information
4 multi-path information
5 MSB multi-path information
6 stereo pilot presence; bit 6 = 1
7 LSB (bit 0) level information
Table 6 Data to be transmitted by the IC for data byte 2
R
EFERENCED FREQUENCY GENERATION
Table 7 Division ratios
Note
1. All specified frequencies are valid for a crystal
oscillator frequency of 61.5 MHz.
BIT DESCRIPTION
0 LSB of the IF-counter
1 IF-counter
2 IF-counter
3 IF-counter
4 IF-counter
5 IF-counter
6 IF-counter
7 MSB of the IF-counter
DIVISION RATIO
REFERENCE
FREQUENCY
(kHz)
(1)
20500 3
12300 5
6150 10
4100 15
2460 25
1230 50
Page 29
1998 Mar 24 29
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Table 8 Output signal of reference frequency divider
IF-
COUNTER
Table 9 IF-counter sensitivity
AM counting windows are 4 or 40 ms. FM counting windows are 4 or 40 ms. AM counting resolution is 250 or 25 Hz.
FM counting resolution is 5 kHz, 625 Hz, 50 kHz or 6.25 kHz. AM-IF-prescaler is divisible by 1. FM-IF-prescaler is
divisible by 25 or 200.
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
10-11(p-p)
differential output voltage (peak-to-peak value) 0.3 0.4 0.5 V
V
10-4(p-p)
;
V
11-4(p-p)
single-ended output voltage (peak-to-peak value) 0.15 0.2 0.3 V
C
10-4
; C
11-4
output capacitance −−4pF
R
10-52
; R
11-52
output resistance 800 1000 1200 Ω
SYMBOL PARAMETER CONDITIONS MIN. UNIT
V
33-34
IF-counter sensitivity AM mode; m = 0 200 µV
V
37-35
IF-counter sensitivity FM mode 200 µV
Fig.21 IF-counter structure.
handbook, full pagewidth
MHA205
FM IF2
AM IF2
prescaler setting
FM IF-PRESCALER
÷ 25 /÷ 200
8-BIT BINARY COUNTER
4 ms/40 ms
counter window
B0
B1 B2 B3 B4 B5 B6 B7
Page 30
1998 Mar 24 30
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
IF-counter read out
IF-counter read out as a function of FM or AM position, counter window and prescaler setting
Note
1. In position FM with a prescaler ratio of 25, counter window of 40 ms and in position AM with 40 ms counter window
ambiguous counting results within the IF filter bandwidth are obtained. The counting range is 127 counts above and
127 counts below the nominal IF of 10.7 MHz for FM and 450 kHz for AM.
The IF-count windows are valid for a crystal oscillator frequency of 61.5 MHz.
The FM/AM switching is carried out by bit 0 of byte 2 of the received data of the IC.
The IF-counter operates continuously.
The IF-counter and window-counter will be reset when the I2C-bus logic detects the address of the IC. This disables
changes in the latches for the IF-count, while reading this value. If the transmission to the front-end IC is disabled after
the synthesizer loop of the TEA6810T/TEA6811T front-end IC has locked for a new frequency, the IF-count will be
available after the set measuring time.
The IF-counter starts at 0. The IF-counter output are the 8 least significant bits of the counting result.
FM/AM
PRESCALER
RATIO
WINDOW
(ms)
f
IF
(kHz)
READ OUT
RESOLUTION
(Hz/count)
RANGE (kHz)
MIN. MAX.
FM 200 4 10700 D6H 50000 4300 17050
FM 200 40 10700 5CH 5000 10065 11335
FM 25 4 10700 B0H 6250 9906.25 11493.75
FM
(1)
25 40 10700 E0H 625 10620.63 10779.38
AM 1 4 450 08H 250 418.25 481.75
AM
(1)
1 40 450 50H 25 446.83 453.18
Page 31
1998 Mar 24 31
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
INTERNAL CIRCUITRY
Table 10 Equivalent pin circuits and pin voltages
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
1 QDET1 open-circuit 4.0
2 QDET2 open-circuit 4.0
3 TSWITCH open-circuit 0.4 to 6.0
4 AGND −−
5V
DDA1
5.0 5.0
6 HFBUS1 5.0 5.0
7 HFBUS2 5.0 5.0
MHA164
39
1
2
MHA165
3
MHA166
6
MHA167
7
Page 32
1998 Mar 24 32
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
8 XTAL1 4.1 4.1
9 XTAL2 4.1 4.1
10 f
ref(p)
4.9 4.9
11 f
ref(n)
4.9 4.9
12 I
ref
4.3 4.3
13 FMIF1IN1 2.3 2.3
14 FMIF1IN2 2.3 2.3
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
MHA168
8 9
MHA169
11
10
MHA170
12
MHA171
13
2019
14
Page 33
1998 Mar 24 33
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
15 TSDR 0.7 to 5.5 0.7 to 5.5
16 TSDS 0.7 to 5.5 0.7 to 5.5
17 V
SDS
3.0 to 5.5 3.0 to 5.5
18 V
SDR
3.0 to 5.5 3.0 to 5.5
19 FMIF2OUT1 8.5 8.5
20 FMIF2OUT2 8.5 8.5
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
MHA172
15
MHA173
16
17
MHA174
18
MHA175
MHA171
13
2019
14
Page 34
1998 Mar 24 34
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
21 V
ref
5.1 5.1
22 AMIF2OUT1 8.5 8.5
23 AMIF2OUT2 8.5 8.5
24 FMAMDEC 3.0 2.5
25 PHASEDET 2.8 to 7.2 2.8 to 7.2
26 PILDET 0.4 0.4 to 7.0
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
MHA176
21
MHA177
2322
MHA178
24
MHA179
25
MHA180
26
Page 35
1998 Mar 24 35
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
27 FMAM10.7 3.0 2.5
28 V
DDA2
8.5 8.5
29 FMIFAMPOUT 6.0 6.0
30 AFGND 3.6 3.6
31 DEEMPHR 2.3 2.3
32 DEEMPHL 2.3 2.3
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
27
MHA181
29
MHA182
30
MHA183
31
MHA184
32
MHA185
Page 36
1998 Mar 24 36
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
33 AMIF2IN1 2.7 0.7
34 AMIF2IN2 2.7 0.7
35 FMIN2 0.7 2.7
36 DCFEED 2.7 2.7
37 FMIN1 0.7 2.7
38 LEVELADJ 2.6 2.6
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
34
33
MHA186
35
MHA187
MHA188
37
36
38
MHA189
Page 37
1998 Mar 24 37
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
39 C
AFC
1.0 to 2.2 1.0 to 7.0
40 MPBUF 0.7 to 6.0 0.7 to 6.0
41 OUTLEFT 3.6 3.6
42 FMSTOP 0 to 5.2 0 to 5.2
43 RDS/AMSTOP 0 to 5.2 3.0
44 OUTRIGHT 3.6 3.6
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
MHA164
39
1
2
40
MHA190
MGK694
41
42
MHA192
43
MHA193
44
MHA194
Page 38
1998 Mar 24 38
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
45 MPXIN 2.8 2.8
46 THRES 4.3/5.7 4.3/5.7
47 MPXOUT 0 3.0
48 AMAFOUT 3.7 4.8
49 V
mute/AML
1.0 to 5.5 1.0 to 5.5
50 LEVELUNWEIG 1.0 to 7.0 1.0 to 7.0
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
45
MHA195
MGK695
46
8.5 V
5 V
47
MHA197
MHA198
48
49
MHA199
50
MHA200
Page 39
1998 Mar 24 39
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
51 IAC
CONTR
0 6.0
52 V
DDD
5.0 5.0
53 SDA 5.0 5.0
54 SCL 5.0 5.0
55 DGND 0 0
56 V
DDA3
8.5 8.5
PIN SYMBOL
DC VOLTAGE
(V)
EQUIVALENT CIRCUIT
AM FM
51
MHA201
MHA202
53
MHA203
54
Page 40
1998 Mar 24 40
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
APPLICATION INFORMATION
Fig.22 ICE application diagram (continued in Fig.23).
Time constant control: slow or fast attack and decay time constants for soft mute, mono/stereo and high-cut control can be chosen by connecting
pin 3 to GND or pin 21.
handbook, full pagewidth
22
nF
100 nF
27 Ω
390 Ω
2.7
k
Ω
330 Ω
68 Ω
V
CC1
330 Ω
100
nF
100 nF
10 kΩ
100 nF
47 µF
11
SFE10.7
SFE10.7
SFE
10.7
22 Ω
61.5 MHz
SCL
SDA
40
220 nF
1.5 nF
82 kΩ
100 kΩ
LEVELADJ
29
14
:2/:6
54
V
ref
100
SFP450
100 kΩ
9
6
53
7
10
13
20
24
27
33
28
8
42
38
37
36
35
34
55
19
FMSTOP
22 23
IF-
MULTI-
ADC
I2C-BUS
COUNTER
BUFFER
20 kHz
LEVEL
ADC
AMPLIFIER
LEVEL
:N5
AM-AMPLIFIER
FM-LIMITER
SWITCH
AM/FM
REFERENCE
OSCILLATOR
FM
AM
BF840
10 nF
56
pF
56
pF
2×ZS369SCS-
2144AJ
7PSAG1946D = S
Philips 9922 521 00098
or Daiwa AT - 49
LEVEL
DETECTOR
IF-
FREQUENCY
AMPLIFIER
PATH
22 nF
22 Ω
100 µF
220 kΩ
22 Ω
47 pF
BB135
100 nF
12 nF
100 pF
33 µF
470 Ω
100 nF
10
nF
270 pF
10 pF
220 Ω
100 nF
100 Ω
BUFFER
68 µH
BF861A
2.7 pF
32
DRIVE
DIODE
PIN
1 µF
14
12
10 kΩ
19
16
15
21
GAP
BAND-
1 mH
18
11
:N2
LIMITER
AM/FM
13
100 nF
BUFFER
1
6
7
2
9
4
5
8
AM/FM
AM/FM
AM/FM
310 17 20
V
CC
40
39
3.3 nF
10 kΩ
36
35
37
38
34
30
31
33
100
pF
330 nH
47 mH
29
28
27
25
26
26
22
8.2 pF
1.8 pF
22 pF
10 nF
470 Ω
47 Ω
100 nF
AGC
RF
AM -
DIVIDER
PROGRAMABLE
OSCILLATOR
AM/FM
PUMP
AGC
FM
DETECTOR
LOCK
AM
DETECTOR
PHASE
BUS
TEA6810T
TEA6811T
CHARGE
1 µF
1 µF
47 µF
220
µH
3.6 kΩ
2.2 kΩ
388BN-1211Z
E543SNAS
-02010
10 pF
10 pF
1 nF
47 kΩ
V
CCA
nF
100
nF
IN-LOCK
3.3
µH
AM/FM
1.8
pF
4 to 10 pF
BB804
47 kΩ
10 µF
1 nF
5.6 pF
6.8
pF
6.8 µH
3.3 µH
220 nF
270 pF
33 µH
E543SNAS
-04011
BAV
99
ISV
172
2.2 MΩ
+8.5 V
V
CC
+8.5 V
+8.5 V
V
CCD
+5 V
+5 V
V
CC
+8.5 V
L7
L1
TR2
TR3
TR4
TR5
R39
R40
CONTROL
TEA6823T
TEA6825T
MHA708
E
F
G
H
A
B
C
D
1 kΩ
330 pF
330
pF
10 kΩ
SDASCL
10 kΩ
330
Ω
330
Ω
P392BE2049AJ = S
Page 41
1998 Mar 24 41
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
Fig.23 ICE application diagram (continued from Fig.22).
handbook, full pagewidth
100 nF
100
nF
39
43 48
100 kΩ
33 kΩ
33 kΩ
AMSTOP
10 nF
RDS
V
ref
220 kΩ
68 pF
220
nF
100
nF
2.2 MΩ
820 kΩ
12 kΩ
33 kΩ
1.2 MΩ
P392BC-1977Z
TOKO
220 nF
82 kΩ
100 nF
470 nF
V
int2
V
int1
31
100 nF
15
100 kΩ
3.3 nF
4.3 kΩ
17 18
DETECTOR
NOISEMODULATION
DETECTOR
FORMER
PULSE
DETECTOR
INTERFERENCE
-
+
1 MΩ
27 kΩ
22 nF220 nF
3.3 MΩ
mute
radio
mute
radio
tuning
mute
MUTE
SOFT
30
AM
3
2
1
OUTLEFT
16
21
25
26
51
50
46 49
47 45
44
DETECTOR
AVERAGE
DETECTOR
PEAK
DETECTOR
PEAK
DETECTOR
AVERAGE
SWITCH
CURRENT
60 kHz
PASS
HIGH
AFC
PASS
HIGH
mono
MATRIX
AND
DECODER
MPX-
38 kHz
19 kHz
BLOCK
LOGIC
CANCELLER
PILOT
f
ref
DETECTOR
PILOT
DETECTOR
PHASE
DIGITAL
VCO
DETECTOR
PHASE
FILTER
LOW
MPX
DELOG
AM
SUPPLY
56
32
41
52
OUTRIGHT
12
5
4
100 nF
120 kΩ
100 nF
470 nF
33 µF
10 Ω
68 µF
6.8 nF
6.8 nF
level
V
CC
8.5 V
R
C
BUFFER
V
ref
-
+
-
+
AMPLIFIER
PASS
FILTER
L13
R51
R41
V
int1
V
int2
TEMPERATURE
COMPENSATION
THRESHOLD
CONTROL
TEA6823T
TEA6825T
H
G
F
E
D
C
B
A
MHA709
47 µF
47 µF
V
CCA
V
DDD
22 µH
V
CC
+8.5 V
+8.5 V
+5 V
+5 V
Page 42
1998 Mar 24 42
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
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handbook, full pagewidth
220 Ω
220 µH
22 nF
220 kΩ
22 kΩ
1 µF
1 µF
47 pF
BB135
100 nF
3.6 kΩ
100 pF
330 pF
330 pF
56 pF
10 nF
56 pF
100 nF
22 nF
1.5 nF
100 kΩ
82 kΩ
100 kΩ
220 kΩ
10 nF
220 nF
82 kΩ
68 pF
220 nF
100
nF
100
nF
12 kΩ
33
k
Ω
1.2 MΩ
2.2 MΩ
820 kΩ
22 nF
2.7 kΩ
470 nF
100 pF
330 nH
100 nF
1 mH
BF861A
FMSTOP
OUTLEFT
OUTRIGHT
V
ref
SCL
SDA
detector
lock
SFE10.7
SFE10.7
270 pF
100 nF
100 nF
1 MΩ
3.3 MΩ
100 nF
120 kΩ
1 kΩ
470 nF
61.5 MHz
100 nF
47 µF
47 µF
22 µH
100 nF
27 kΩ
220 nF
SFP450
100 kΩ
3.3 nF
220 nF
100 kΩ
33 kΩ
33 kΩ
V
ref
4.3 kΩ
100 nF
47 µF
100
nF
SFE10.7
100 nF
100 nF
56
50
45
40
35
30
29
28
25
20
15
10
5
1
2.2 kΩ
20
15
10
5
1
35
30
25
21
40
100
nF
10 nF
12 nF
10 pF
8.2 pF
1 µF
1.8 pF
2.7 pF
3.3 nF
10 kΩ
100 nF
22 pF
68 µH
33 µF
470 Ω
100 Ω
33 µF
+5 V
10 kΩ
6.8 nF
6.8 nF
330 Ω
390 Ω
27 Ω
330
Ω
68 µF
+8.5 V
+8.5 V
10 kΩ 10 kΩ
100 nF
470 Ω
22 Ω100 µF
47 mH
BAV
99
+5 V
+8.5 V
F
ref
+5 V
RDSMPX
AMSTOP
SEP
LEVEL
V
CCA
V
CCD
V
CC
V
CCD
V
CC
TEA6810T
TEA6811T
TEA6823T
TEA6825T
LEVELADJ
SDA
7PSAG-1946D = S
P392BE-
S369SCS-2144AJ (2x)
P392BC-1977Z
E543SNAS-02010
BF840
100 nF
SCL
6.8 µH
388BN-1211Z
3.3 µH
33 µH
270 pF
10 pF
1 nF
10 pF
10 pF
5.6 pF
6.8 pF
47 k
47 ΩΩ
ISV172
1 nF
47 kΩ
2.2 MΩ
10 kΩ
1.8 pF
4 to 10 pF
BB
804
E543SNAS
-4011
2049AJ = S
L7
L1
L13
TR2
TR3
TR4
TR5
330 Ω
330 Ω
R41
R39
R51
R40
220 nF
MHA710
+8.5 V
R
C
Fig.24 AM/FM car radio receiver with TEA6810T and TEA6825T or TEA6811T and TEA6823T.
Page 43
1998 Mar 24 43
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
PACKAGE OUTLINES
UNIT A1A2A3b
p
cD
(1)E(2)
(1)
eHELLpQZywv θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
inches
0.3
0.1
3.0
2.8
0.25
0.42
0.30
0.22
0.14
21.65
21.35
11.1
11.0
0.75
15.8
15.2
1.45
1.30
0.90
0.55
7
0
o
o
0.1 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
1.6
1.4
SOT190-1
96-04-02
97-08-11
w M
θ
A
A
1
A
2
b
p
D
H
E
L
p
Q
detail X
E
Z
e
c
L
v M
A
X
(A )
3
A
y
56
29
281
pin 1 index
0.012
0.004
0.12
0.11
0.017
0.012
0.0087
0.0055
0.85
0.84
0.44
0.43
0.0295
2.25
0.089
0.62
0.60
0.057
0.051
0.035
0.022
0.004
0.2
0.008 0.004
0.063
0.055
0.01
0 5 10 mm
scale
VSO56: plastic very small outline package; 56 leads
SOT190-1
A
max.
3.3
0.13
Note
1. Plastic or metal protrusions of 0.3 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
Page 44
1998 Mar 24 44
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
UNIT A1A
2
A3b
p
cD
(1)E(2)
(1)
eHELLpQZywv θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
inches
0.3
0.1
3.0
2.8
0.25
0.42
0.30
0.22
0.14
21.65
21.35
11.1
11.0
0.75
15.8
15.2
1.45
1.30
0.90
0.55
7
0
o
o
0.1 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
1.6
1.4
SOT190-2
96-04-02
97-08-11
w M
b
p
D
H
E
E
Z
e
c
v M
A
X
A
y
θ
A
A
1
A
2
L
p
Q
detail X
L
(A )
3
56
29
281
pin 1 index
0.012
0.004
0.12
0.11
0.017
0.012
0.0087
0.0055
0.85
0.84
0.44
0.43
0.0295
2.25
0.089
0.62
0.60
0.057
0.051
0.035
0.022
0.004
0.2
0.008 0.004
0.063
0.055
0.01
0 5 10 mm
scale
VSO56: plastic very small outline package; 56 leads; face down
SOT190-2
A
max.
3.3
0.13
Note
1. Plastic or metal protrusions of 0.3 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
Page 45
1998 Mar 24 45
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(order code 9398 652 90011).
Reflow soldering
Reflow soldering techniques are suitable for all VSO
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
Wave soldering
Wave soldering techniques can be used for all VSO
packages if the following conditions are observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Repairing soldered joints
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Page 46
1998 Mar 24 46
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale
PURCHASE OF PHILIPS I
2
C COMPONENTS
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
Purchase of Philips I
2
C components conveys a license under the Philips’ I2C patent to use the
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
Page 47
1998 Mar 24 47
Philips Semiconductors Preliminary specification
In Car Entertainment (ICE) car radio TEA6823T; TEA6825T
NOTES
Page 48
Internet: http://www.semiconductors.philips.com
Philips Semiconductors – a worldwide company
© Philips Electronics N.V. 1998 SCA57
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
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For all other countries apply to: Philips Semiconductors,
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Hungary: see Austria
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Printed in The Netherlands 545102/1200/01/pp48 Date of release: 1998 Mar 24 Document order number: 9397 750 02316
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