Datasheet TEA6825T, TEA6823T Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TEA6823T; TEA6825T

In Car Entertainment (ICE) car
radio

Preliminary specification
File under Integrated Circuits, IC01

1998 Mar 24

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

FEATURES
General

• FM mixer for conversion from FM-IF
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.

ORDERING INFORMATION

= 72.2 MHz to

1

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.

TYPE NUMBER

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

PACKAGE

1998 Mar 24 2

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

DDA1

I

DDA1

I

19+I20

I

22+I23

V

DDA2

I

DDA2

V

DDA3

I

DDA3

V

DDD

I

DDD

SN+

-------------­N

THD total harmonic distortion FM mode; ∆f=75kHz − 0.1 0.35 %

α

cs

T

amb

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

analog supply current 1 (pin 5) FM mode 17 21 25 mA

AM mode 14 17 21 mA
total FM mixer output current 4.8 6.0 7.2 mA
total AM mixer output current 10 12 14 mA
analog supply voltage 2 (pin 28) note 1 7.0 8.5 10 V

operating range 8.1 8.5 8.9 V
analog supply current 2 (pin 28) FM mode 2.4 3.0 3.6 mA
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
analog supply current 3 (pin 56) FM mode 19 24 28 mA

AM mode 9.5 12 15 mA
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
digital supply current (pin 52) note 1 8 10 12 mA
signal plus noise-to-noise ratio FM mode;

66 75 − dB
∆f = 22.5 kHz at
pins 43 and 47

AM mode; m = 0.3 54 60 − dB

AM mode − 1.5 3 %

channel separation (adjusted) 40 −−dB
operating ambient temperature −40 − +85 °C

Note

1. IC is operating; specified parameters may deviate from limits which are valid for operating range.

1998 Mar 24 3

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1998 Mar 24 4

dbook, full pagewidth

BLOCK DIAGRAM

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

Philips Semiconductors Preliminary specification

V

CC1

10.7 MHz

SFE10.7

330 Ω

100 nF

10.7 MHz

10.7 MHz

10.7 MHz

ZS369SCS-2144AJ TR3

72.2 MHz

SDA
SCL

f

ref

22 nF

100 nF

61.5 MHz

PHILIPS
9922 521 00098
or Daiwa AT-49

V

DDD

+5 V

TOKO
7PSAG-1946D = S

10 nF

10 kΩ10 kΩ

TR5

37

35
27

24

28
29
19
20

13

56
pF

14

8

9

10

11

6
7

10 kΩ
10 kΩ

1.5 nF

AM

÷2/÷6

IF-

AMPLIFIER

FM

OSCILLATOR

REFERENCE
FREQUENCY

V

ref

33 kΩ

AMSTOP

100 kΩ

33 kΩ

68 µF

39214745254843

AFC

TEA6823T
TEA6825T

SWITCH

R

C

100
nF

R51

RDS

MPX

BUFFER

100

nF

SOFT
MUTE

MODULATION

DETECTOR

3.3 MΩ

2.2 MΩ

100 nF

10 nF

3.3 nF

tuning

mute

220 nF

HIGH
PASS

FILTER

V

int2

220 kΩ

68 pF

100 kΩ
R41

PILOT

CANCELLER

MPX-

DECODER

AND

MATRIX

mono

82 kΩ

LOW
PASS

FILTER

INTERFERENCE

1 MΩ

1.2 MΩ

PILOT

DETECTOR

PULSE

FORMER

DETECTOR

NOISE

DETECTOR

PHASE

DETECTOR

100 nF

FMSTOP

100 kΩ
R39

ADC

LEVEL

I2C-BUS

330 Ω

SDA

V

ref

100 kΩ

R40

100 nF

36

FM-LIMITER

AM-AMPLIFIER

LEVEL

DETECTOR

LEVEL

AMPLIFIER

20 kHz

BUFFER

ADC

MULTI-

PATH

TOKO
P392BC-1977Z

LEVELADJ

220 nF 220 nF

82 kΩ

38

TEMP

COMPEN-

SATION

level

L13

62 pF

4.3 kΩ

AM

DELOG

AMPLIFIER

HIGH
PASS

60 kHz

AVERAGE

DETECTOR

PEAK

DETECTOR

AVERAGE

DETECTOR

PEAK

DETECTOR

AM

CURRENT

THRESHOLD

CONTROL

V

CC

8.5 V

1 kΩ

SFP450

100
nF

34 42

332322

AM/FM

SWITCH

÷N5

IF

COUNTER

54 53 55 40 50 3 46 16 49 15 17 18 51 21 52

330 Ω

SCL

220 nF 22 nF

27 kΩ

DIGITAL

PHASE

DETECTOR

f

ref

radio mute

V

int1

radio mute

V

int1

V

SUPPLY

int2

12 kΩ

33 kΩ

V

V

ref

DDD

+5 V

VCO

LOGIC
BLOCK

33 µF

10 Ω

26

31

44

30

41

32

56

12

4

5

MGK693

100

nF

820 kΩ

100 nF

470 nF

470 nF

120 kΩ

100

nF

6.8 nF

6.8 nF

OUTRIGHT

OUTLEFT

22 µH

47 µF47 µF

47 µF

V

+5 V

V

CC

+8.5 V

+8.5 V

CCA

38 kHz19 kHz

Fig.1 Block diagram.

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
V

SDS
SDR

17 SDS control voltage input

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

SYMBOL PIN DESCRIPTION

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
AMIF2IN2 34 AM-IF

input 1

2

input 2

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
V

DDD

CONTR

51 IAC control voltage

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)

1998 Mar 24 5

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

handbook, halfpage

TSWITCH

HFBUS1
HFBUS2

FMIF1IN1
FMIF1IN2

FMIF2OUT1
FMIF2OUT2

AMIF2OUT1
AMIF2OUT2

FMAMDEC

PHASEDET

PILDET

FMAM10.7

Fig.2 Pin configuration for TEA6823T.

QDET1
QDET2

AGND

V

DDA1

XTAL1
XTAL2

f

ref(p)

f

ref(n)

I

ref

TSDR

TSDS

V

SDS

V

SDR

V

ref

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

TEA6823T

MHA700

56

V

DDA3

55

DGND

54

SCL

53

SDA

52

V

DDD

51

IAC

50

LEVELUNWEIG

49

V

mute/AML

48

AMAFOUT

47

MPXOUT

46

THRES

45

MPXIN

44

OUTRIGHT

43

RDS/AMSTOP

42

FMSTOP

41

OUTLEFT

40

MPBUF

39

C

AFC

38

LEVELADJ

37

FMIN1

36

DCFEED

35

FMIN2

34

AMIF2IN2

33

AMIF2IN1

32

DEEMPHL

31

DEEMPHR

30

AFGND

29

FMIFAMPOUT

CONTR

handbook, halfpage

IAC

LEVELUNWEIG

V

mute/AML

AMAFOUT

OUTRIGHT

RDS/AMSTOP

OUTLEFT

LEVELADJ

AMIF2IN2
AMIF2IN1

DEEMPHL

DEEMPHR

FMIFAMPOUT

CONTR

MPXOUT

FMSTOP

MPBUF

DCFEED

AFGND

V

DDA3

DGND

SCL

SDA

V

DDD

THRES

MPXIN

C

AFC

FMIN1

FMIN2

56
55
54
53
52
51
50
49
48
47
46
45
44
43

TEA6825T

42
41
40
39
38
37
36
35
34
33
32
31
30
29

MHA701

1

QDET1

2

QDET2

3

TSWITCH

4

AGND

5

V

DDA1

6

HFBUS1

7

HFBUS2

8

XTAL1

9

XTAL2

10

f

ref(p)

11

f

ref(n)

12

I

ref

13

FMIF1IN1

14

FMIF1IN2

15

TSDR

16

TSDS

17

V

SDS

18

V

SDR

19

FMIF2OUT1

20

FMIF2OUT2

21

V

ref

22

AMIF2OUT1

23

AMIF2OUT2

24

FMAMDEC

25

PHASEDET

26

PILDET

27

FMAM10.7

28

V

DDA2

Fig.3 Pin configuration for TEA6825T (top view).

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).

1998 Mar 24 6

A 3rd order low-pass filter (f

= 90 kHz) at the MPX input

g

provides an extra 190 kHz ACI suppression.
An interference gate is connected at the MPX demodulator

outputs. For AM the VCO is switched off.

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

DDA1

V

DDA2

V

DDA3

V

DDD

T

stg

T

amb

V

es

Note

1. Charge device model class B: equivalent to discharging a 200 pF capacitor via a 0 Ω series resistor.

analog supply voltage 1 (pin 5) −0.3 +6.5 V
analog supply voltage 2 (pin 28) −0.3 +12 V
analog supply voltage 3 (pin 56) −0.3 +12 V
digital supply voltage (pin 52) −0.3 +6.5 V
storage temperature −55 +150 °C
operating ambient temperature −40 +85 °C
electrostatic handling note 1

pins 8 and 9 −100 +100 V
all other pins −300 +300 V

CHARACTERISTICS

V

56-4=V28-4

= 8.5 V; V

5-4=V52-55

=5V; T

amb

=25°C; f

= 1 kHz; deviation = 22.5 kHz; Rg=50Ω; V

mod

37-35

=10mV;

with de-emphasis = 50 µs; coil quality = 15; unless otherwise specified.

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

I

DDA3

analog supply current 2 (pin 28) FM mode 2.4 3.0 3.6 mA
analog supply current 3 (pin 56) FM mode 19 24 28 mA

AM mode 9.5 12 15 mA

I

DDD

I

19+I20

I

22+I23

digital supply current (pin 52) 8 10 12 mA
total FM mixer output current 4.8 6.0 7.2 mA

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

12.0 14.0 − V

(peak-to-peak value)
I

; I

19

20

mixer bias current 2.4 3.0 3.6 mA

mixer leakage current in AM position −− 2 µA
I

19IF2/V13-14IF1

R

i

C

i

R

opt

R

o

C

o

conversion gain 1.65 1.9 2.2 mS

input resistance (pins 13 to 14) 5 7 − kΩ

input capacitance (pins 13 to 14) − 3 4.5 pF

optimum generator resistance − 1.2 − kΩ

output resistance (pins 19 to 20) 15 20 − kΩ

output capacitance (pins 19 to 4

− 12 14 pF

and pins 20 to 4)
IP3 third order intermodulation 114 124 − dBµV

1998 Mar 24 7

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Oscillator

f

osc

∆f

osc

∆f

/∆T temperature dependence of

osc

R

1

C

0

amplifier

FM-IF

2

V

27-24 max(rms)

V

29-4 max(rms)

V

29-4/V27-24

∆V

29-4/V27-24

R

i

C

i

R

o

C

o

FM-IF

limiter

2

V

o 1-2(p-p)

V

1-2/V37-35

C

i

R

o

C

o

oscillator frequency − 61.5 − MHz

oscillator frequency spread −− 250 Hz

−1

oscillator frequency

crystal type Philips
9922 521 00098

− 30 × 10−6− K

crystal motional resistance −− 70 Ω

crystal shunt capacitance −− 5pF

maximum input voltage for 1 dB

80 110 − mV

compression point (RMS value)

maximum output voltage

220 320 − mV

(RMS value)

amplifier gain RL= 330 Ω; see Fig.5 9 12 15 dB

gain temperature dependence −25 °C<T

< +85 °C − 0.1 − dB/K

amb

input resistance (pins 27 to 24) 300 330 360 Ω

input capacitance (pins 27 to 4) −− 5pF

output resistance (pin 29) 300 330 360 Ω

output capacitance (pins 29 to 4) −− 5pF

limiter output voltage

500 700 − mV

(peak-to-peak value)

limiter gain see Fig.6 − 80 − dB

input capacitance (pins 37 to 4) −− 5pF

output resistance (pins 1 to 2) −− 1.0 kΩ

output capacitance (pins 1 to 2) 10 15 20 pF

1998 Mar 24 8

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

FM demodulator

V

47-4(rms)

V

43-4(rms)

V

37-35(rms)

V

37-35(rms)

∆V

43DC

V

43FM/V43AM

V

47FM/V47AM

∆V

43-44AFCdis

/∆V

43-44AFCactive

R

o

SN+

-------------­N

THD total harmonic distortion detuning ≤50 kHz;

MPX output voltage (RMS value) 160 200 240 mV
MPX output voltage for RDS

160 200 240 mV

(RMS value)
start of limiting voltage (RMS value) αAF= −3dB − 25 40 µV
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

50 60 − dB

residual DC-offset voltage ∆L

SN+

--------------

SN+

--------------

demod

26 dB=

N

46 dB=

N

= typical value
10 µV<V
80 µV<V

AM suppression ∆f = 22.5 kHz;

f

modAM

= 1 kHz;

<80µV − 100 1000 mV

37-35

< 800 mV − 10 30 mV

37-35

mAM= 30%;
V

= 3 to 300 mV

37-35

AM suppression V
demodulator frequency control

voltage (AFC) efficiency

= 1 to 300 mV 50 60 − dB

37-35

at 100 kHz detune from

28 32 − dB

exact tuning
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

∆f = 75 kHz; f

mod

= 1 kHz
without de-emphasis;
L

= typical value

demod

pin 43;
V

37-35

− 0.1 0.35 %

= 300 µV

to 800 mV
pin 47;

V

37-35

= 1 to 800 mV

− 0.1 0.35 %

1998 Mar 24 9

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Unweighted voltage level

V

50-4

∆V

/∆V

50-4

37-35

∆V

/VK temperature dependence V

50-4

I

50(max)source

I

50(max)sink

R

o50

ADJUSTMENT OF UNWEIGHTED VOLTAGE LEVEL AND V
∆V

50

V

38-4

∆V

/∆V

50-4

38-4

R

i38

MUTING DEPENDENCE ON ADJUST OF LEVEL UNWEIGHTED VOLTAGE; note 2
V

43/V47

∆V43V47⁄

-------------------------­∆V

49

unweighted voltage level see Fig.9; V38= 2.52 V

V

≤ 2.5 µV 1.6 2.2 3.0 V

37-35

V

= 1.0 mV 2.7 3.4 4.7 V

37-35

slope of unweighted voltage level 100 µV (RMS) ≤ V

37-35

< 300 mV

temperature

0.75 0.9 1.05 V/20 dB

compensation off
temperature

0.6 0.75 0.9 V/20 dB

compensation on

=1mV

37-35

temperature

− 5.0 − mV/VK

compensation off
temperature

− 2.0 − mV/VK

compensation on
maximum output source current 0.3 −−mA
maximum output sink current −50 −−µA
output resistance −− 300 Ω

mute/AML

adjusting range voltage V

; note 1

= 10 mV (RMS) −1.8 − +1.8 V

37-35

internal bias voltage − 2.6 − V
adjusting gain −−0.9 −−
input resistance − 80 − kΩ

start of mute V49/V21= 0.625 1 3 7 dB
mute slope V

= −6dB − 25 − dB/V

43/V47

Soft mute, time constant control, mono/stereo blend and high-cut control; see Fig.22

UTE VOLTAGE; note 3

M
V

∆V

49-4

49-4

/∆V

37-35

mute voltage V38= 2.52 V

V

< 2.5 µV 1.8 2.2 3.2 V

37-35

= 1.0 mV 2.7 3.4 4.7 V

V

37-35

slope of mute voltage 100 µV (RMS) ≤ V

37-35

0.75 0.9 1.05 V/20 dB

< 300 mV

/VK temperature dependency V

∆V

49-4

=1mV − 5.0 − mV/VK

37-35

1998 Mar 24 10

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

ATTACK AND DECAY TIME FOR MUTE VOLTAGE
I

ch

I

dch

∆f muting activated by 60 kHz FM

V

43/V47

T

IME CONSTANT FOR MONO/STEREO BLEND VOLTAGE; note 4

I

ch

I

dch

m mono/stereo blend activated

∆f mono/stereo blend activated

charge current pin 3 connected to GND − 3.5 −µA

pin 3 connected to pin 5 − 150 −µA

discharge current pin 3 connected to GND −−4.0 −µA

pin 3 connected to pin 5 −−170 −µA

interference

maximum mute depth by 60 kHz
FM interference

charge current V

V49<3V; V
f

= 60 kHz

mod

pin 3 connected to GND;

V

43/V47

pin 3 connected to pin 5;

V

43/V47

pin 3 connected to GND − 15 − dB
pin 3 connected to pin 5 − 10 − dB

=3mV;

37-35

37-35

=9dB

=6dB

= 3 mV;

− 40 − kHz

− 40 − kHz

− 0.6 −µA

pin 3 connected to GND
V

37-35

=3mV;

− 23 −µA

pin 3 connected to pin 5

discharge current V

37-35

=3mV;

−−17 −µA

pin 3 connected to GND
V

37-35

=3mV;

−−750 −µA

pin 3 connected to pin 5
V

by 20 kHz AM interference

R
f

16

L16

mod

<2V; V

>50MΩ;

= 20 kHz;

37-35

= 3 mV;

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 − %

by 60 kHz FM interference

V16<2V; V
R

>50MΩ;

L16

f

= 60 kHz

mod

37-35

= 3 mV;

pin 3 connected to GND − 50 − kHz

pin 3 connected to pin 5 − 50 − kHz

1998 Mar 24 11

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

TIME CONSTANT FOR HIGH-CUT CONTROL VOLTAGE SDR; note 5
I

ch

I

dch

charge current V

discharge current V

m high-cut control activated

by 20 kHz AM interference

∆f high-cut control activated

by 60 kHz FM interference

M

ULTI-PATH DETECTOR

f

MP

multi-path detector band-pass
centre frequency

B

MP

band-pass bandwidth 7.0 −−kHz

Reference voltage

V
∆V
I

21

21-4

21-4

output voltage I21= −1 mA 4.5 5.1 5.7 V
temperature dependence − 3.3 − mV/VK
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)

, I

I

22

23

mixer bias current 5.0 6.0 7.0 mA
mixer leakage current in FM position −− 2 µA

I

22IF2/V27-24IF1

R

27-24

C

27-24

R

22-23

C

22-23

conversion transconductance 2.2 2.7 3.4 mS
input resistance 300 330 360 Ω
input capacitance − 58pF
output resistance 10.0 20.0 − kΩ
output capacitance − 510pF

IP3 third order intermodulation − 137 − dBµV

37-35

=3mV;

− 0.6 −µA

pin 3 connected to GND
V

37-35

=3mV;

− 41 −µA

pin 3 connected to pin 5

37-35

=3mV;

−−0.7 −µA

pin 3 connected to GND
V

37-35

=3mV;

−−44 −µA

pin 3 connected to pin 5
V

R
f

15

L15

mod

<2V; V

>50MΩ;

= 20 kHz

37-35

= 3 mV;

pin 3 connected to GND − 45 − %

pin 3 connected to pin 5 − 45 − %

V
R
f

15

L15

mod

<2V; V

>50MΩ;

= 60 kHz

37-35

= 3 mV;

pin 3 connected to GND − 50 − kHz

pin 3 connected to pin 5 − 50 − kHz

− 20 − kHz

12 15 − V

1998 Mar 24 12

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DETECTOR; notes 8 and 9

AM
V

48-4(rms)

V

33-34(rms)

AF output level (RMS value) R

sensitivity voltage (RMS value) − 50 75 µV

AM-IF

minimum input voltage

2

(RMS value)
AM-IF

maximum input voltage

2

(RMS value)

R

33-34

C

24-23

R

o48

C

o48

SN+

-------------­N

IF2 input resistance 1.8 2.0 2.2 kΩ
IF2 input capacitance − 10 15 pF
output resistance 27 33 39 kΩ
output capacitance −− 10 pF
signal plus noise-to-noise ratio 54 60 − dB

THD total harmonic distortion m = 0.8;

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

. It additionally depends on multi-path level, noise (adjacent channel interferences) and the position of

38-4

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

= 10.7 MHz; f

IF1

= 450 kHz for AM mixer.

IF2

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

= 400 Hz; m = 30%.

mod

> 500 kΩ;

L48

100 µV ≤ V

SN+

-------------­N

SN+

-------------­N

26 dB=

46 dB=

33-34

≤ 300 mV

190 240 290 mV

− 200 400 µV

THD ≤ 5%; m = 0.8 −− 100 µV

THD ≤ 5%; m = 0.8 800 −−mV

− 1.5 3.0 %

300 µV ≤ V

33-34

≤ 200 mV

1998 Mar 24 13

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

STEREO DECODER CHARACTERISTICS

Input signal (∆f = 75 kHz) V
(pin 45) Ri= 168 kΩ; T

MPX(p-p)

=25°C; unless otherwise specified.

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

44-4(rms)

V

41-4(rms)

V

44-4

I

44(max)

V

44-4/V41-4

R
R

α

cs

SN+

--------------

o(44)
Lmin

N

; V

; R

;

41-4

; I

41(max)

o(41)

AF output voltage (RMS value) 800 900 1000 mV

DC output voltage 3.1 3.6 4.1 V
maximum output current 150 −−µA
difference of output voltage −1 − +1 dB
output resistance −−600 Ω
minimum load resistor 12 −−kΩ
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

= 1.7 V; f

= 1 kHz; de-emphasis time constant t = 50 µs; nominal input resistor

mod

Carrier and harmonic suppression at the output; note 1

α

19

α

38

α

57

α

76

α

2

α

3

α

57

α

67

pilot signal f = 19 kHz − 50 − dB
subcarrier f = 38 kHz − 50 − dB

f = 57 kHz − 50 − dB
f = 76 kHz − 60 − dB

intermodulation f

mod

f

mod

traffic radio (ARI) f = 57 kHz − 70 − dB
subsidiary communications

f = 67 kHz 70 −−dB

authorization

α

114

α

190

RR ripple rejection at output f

adjacent channel frequency f = 114 kHz − 80 − dB

f = 190 kHz − 70 − dB

= 100 Hz; Vr= 100 mV (eff.) − 30 − dB

r

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

External mono/stereo control; note 2
V

− 0.75V

17

control voltage channel separation see Fig.17

21

V
V

= 10 kHz; f
= 13 kHz; f

= 1 kHz − 60 − dB

spur

= 1 kHz − 58 − dB

spur

− 2 − dB

=6dB −−110 − mV

43/V47

=16dB −−40 − mV

43/V47

1998 Mar 24 14

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Muting functions (mute via I2C-bus)

, ∆V

∆V

44

41

α

mute

High-cut control; see Fig.18
V

− 0.75V

18

t

de-emph

Voltage controlled oscillator; note 4
f

osc

Noise blanker

DC offset voltage tune mute −50 − +50 mV

radio mute (in combination

−400 − +400 mV

with tune mute)
tune mute 60 −−dB
radio mute (in combination with

80 −−dB

tune mute)

control voltage note 3

21

t

de-emph

t

de-emph

=50µs0−−mV
=80µs −300 −−mV

control range of de-emphasis 50 − 80 µs

oscillator frequency 225 228 231 kHz

I

NTERFERENCE DETECTION FULLY INTERNAL FROM LEVEL DETECTOR

t

sup

interference suppression time 40 50 −µs

TRIGGER THRESHOLD CONTROL
I

ch

I

dch

charge current (into +4 V) − 45 −µA
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)

V

51

∆V

51

V

37th/V37(3dB)

trigger sensitivity for test signal 1
(peak value)

trigger sensitivity for test signal 2
(peak value)

trigger threshold variation with
frequency modulation of FM-IF
and f

= 15 kHz (pin 51)

mod

shift of threshold for triggering

V38= 2.52 V; note 5 −−0.5 mV

V

= 2.52 V; note 6 100 −−mV

38

= 2.52 V; note 6 5.0 −−mV

V

38

V

= 2.52 V; note 6 100 −−mV

38

V

= 100 mV; ∆f=0kHz − 6.4 − V

37-35

2

V

= 100 mV; ∆f=40kHz − 250 − mV

37-35

I46= 0 14 20 26 dB
from MPX signal

∆V
V

46

I

offset

37th

/∆I

46

shift of threshold as function of I

46

−0.32 −0.25 −0.16 dB/µA

bias voltage (pin 46) I46< 0 4.0 4.3 4.7 V

I

> 0 5.3 5.7 6.1 V

46

gate input offset current at pins 31

− 20 50 nA
and 32 during suppression pulse
duration

1998 Mar 24 15

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:
V0signal()(at1kHz)

α

= f

------------------------------------------------------------------

2

V

spurious()(at 1 kHz)

0

210kHz×()19 kHz–=

s

α

α57(ARI)

α

α

α

2. The stereo decoder can be set to mono via the I

V0signal()(at 1 kHz)

= f

------------------------------------------------------------------

3

67

114

190

spurious()(at1kHz)

V

0

V

signal()(at 1 kHz)

=

---------------------------------------------------------------------------------------------- ­V

V0signal()(at1kHz)

= f

------------------------------------------------------------------

spurious()(at9kHz)

V

0

V0signal()(at 1 kHz)

= f

-----------------------------------------------------------------­spurious()(at 4 kHz)

V

0

V0signal()(at 1 kHz)

= f

-----------------------------------------------------------------­V

spurious()(at 4 kHz)

0

0

spurious()at 1 kHz 23 Hz±()

0

s

s

s

s

313kHz×()38 kHz–=

238kHz×()67 kHz–=

110 kHz 3 38 kHz×()–=

186 kHz 5 38 kHz×()–=

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.

1998 Mar 24 16

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

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

ADC for FM level information; note 1

∆V

37-35

FM STOP
∆V

stop

ADC for AM level information; note 2
∆V

33-34

∆V

33-34

AM STOP
∆V

stop

ADC for multi-path information; note 3
m multi-path conversion step 0 −−5%

analog-to-digital conversion

step size 2 4 8 dB/step
level range 43 56 69 dB

variation of stop level as function of V

42-4

− 16 − dB/V

analog-to-digital conversion step size 2 4 8 dB/step
analog-to-digital conversion level range 43 56 69 dB

variation of stop level as function of V

43-4

− 16 − dB/V

step 1 − 15 − %
step 2 − 22 − %
step 3 − 28 − %
step 4 − 34 − %
step 5 − 40 − %
step 6 − 46 − %
step 7 − 52 60 %

Notes

1. The FM level information V

2. The AM level information V

3. The multi-path information V
m ≤ 0.6; f

mod

= 20 kHz.

is analog-to-digital converted with 4 bits.

50-3

is analog-to-digital converted with 4 bits.

49-4

isanalog-to-digital converted with 3 bits covering an IF2 amplitude modulation range

40-4

1998 Mar 24 17

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

handbook, full pagewidth

GENERATOR

R&S SMPC

Rg = 50 Ω

handbook, full pagewidth

f

= 72.2 MHz

IF1

GENERATOR

R&S SMPC

Rg = 50 Ω

1 : 1

13

19

TEA6823T
TEA6825T

14

20

Fig.4 Test circuit FM mixer.

PASSIVE

ATTENUATOR

–6 dB

RIN = 50 Ω

R

= 330 Ω

OUT

10 nF

27

24

10 nF

+8.5 V

3.5

3.5

f

= 10.7 MHz

IF2

TEA6823T
TEA6825T

LOW NOISE

Ω

330

Ω

AMPLIFIER

AVD 704201

(S/N = 103 dB)

OSCILLOSCOPE

PM3295A

330

2

10 nF

29

4

SPECTRUM

ANALYZER

HP8568A

MHA702

MHA703

Fig.5 Test circuit IF-amplifier.

handbook, full pagewidth

GENERATOR

R&S SMPC

Rg = 50 Ω

10 nF

50 Ω

37

TEA6823T
TEA6825T

35

100 nF

Fig.6 Test circuit limiter gain.

1998 Mar 24 18

1

2

10 nF

OSCILLOSCOPE

PM3295A

10 nF

MHA704

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

20

handbook, full pagewidth

V

47-4

(dB)

0

–20

–40

–60

–80

–3

10

(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f

–2

10

mod

–1

10

= 1 kHz.

(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.

Fig.7 Signal and noise of muted MPX voltage.

MHA247

(1)

(2)

11010

2

V

(mV)

37-35

3

10

20

handbook, full pagewidth

V

43-4

(dB)

0

–20

–40

–60

–80

–3

10

(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f

–2

10

mod

–1

10

= 1 kHz.

(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.

Fig.8 Signal and noise of unmuted MPX voltage.

MHA248

(1)

(2)

11010

2

V

(mV)

37-35

3

10

1998 Mar 24 19

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

10

handbook, full pagewidth

V

50-4
(V)

8

6

4

2

0

–3

10

(1) Temperature compensation off.
(2) Temperature compensation on.

MHA249

(1)

(2)

–2

10

–1

10

11010

2

V

(mV)

37-35

3

10

Fig.9 Unweighted voltage level (typical curve).

10

handbook, full pagewidth

V

50-4
(V)

8

6

4

2

0

–3

10

–2

10

–1

10

11010

Fig.10 Adjustment range of unweighted voltage level.

MHA250

2103

V

(mV)

37-35

1998 Mar 24 20

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

20

handbook, full pagewidth

V

47-4

(dB)

0

(4)

–20

–40

–60

(4)

(3)

–80

–3

10

(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f

–2

10

mod

–1

10

= 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.
(3) Level adjustment set to α
(4) Level adjustment set to α
(5) Level adjustment set to α

at 0.6 mV.

3dB

at 0.4 mV.

3dB

at 1 mV.

3dB

(3) (5)

(1)

(2)

(5)

11010

2

V

37-35

(mV)

MHA251

3

10

Fig.11 Muting dependence of unweighted voltage level (typical curve).

1998 Mar 24 21

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

10

handbook, full pagewidth

V

49-4
(V)

8

6

4

2

0

–3

10

–2

10

–1

10

11010

Fig.12 Typical mute voltage as function of FM-IF2 voltage.

MHA252

2103

V

(mV)

37-35

10

handbook, full pagewidth

V

49-4
(V)

8

6

4

2

0

–3

10

MHA213

–2

10

–1

10

11010

2103

V

(mV)

37-35

Fig.13 Adjustment range mute voltage.

1998 Mar 24 22

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

handbook, full pagewidth

20

handbook, full pagewidth

V

48-4

(dB)

0

–20

GENERATOR

R&S SMPC

Rg = 50 Ω

f

= 10.7 MHz

IF1

270 Ω

10 nF

10 nF

+8.5 V

27

TEA6823T
TEA6825T

24

22

7

20

7

23

22
nF

Fig.14 Test circuit AM mixer.

(1)

2.2
kΩ

LOW NOISE

AMPLIFIER

AVD 704201

(S/N = 103 dB)

(4)

SPECTRUM

ANALYZER

HP8568A

MHA705

MHA214

8

THD

(%)

6

–40

–60

–80

–3

10

(1) AF: f = 450 kHz; m = 30%; f
(2) Noise: unweighted B = 250 Hz to 15 kHz.
(3) THD m = 80%.
(4) AM level voltage.

–2

10

= 400 Hz.

mod

(2)

(3)

–1

10

Fig.15 Signal, noise and distortion of AM AF output voltage and AM voltage level (typical curve).

1998 Mar 24 23

11010

2103

V

(mV)

33-34

4

2

0

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

I,MPX(p-p)

(V)

4

3

2

1

0

0 100 200

handbook, full pagewidth

V

Fig.16 Adaption of MPX input to FM-demodulator output level by variation of the input resistor.

R

IN(pin20)

MHA215

300

(kΩ)

40

handbook, full pagewidth

α

cs

(dB)

30

20

10

0
–300 –200 –100

MHA706

0

control voltage V17 – 0.75V21 (mV)

Fig.17 Channel separation as function of control voltage.

1998 Mar 24 24

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

handbook, full pagewidth

0

(dB)

–1

–2

–3

–4

–300 –200 –100

Fig.18 High-cut with f

control voltage V18 – 0.75V21 (mV)

= 10 kHz as function of control voltage.

mod

MHA707

0

1998 Mar 24 25

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

handbook, full pagewidth

handbook, full pagewidth

V

V

37-35

t

= 1 ms

37-35

t = 5 µs

tr = tf = 0.5 µs

rep

fIF = 10.7 MHz

Fig.19 Test signal 1 for interference detection from level detector.

t

= 1 ms

t = 5 µs

tr = tf = 0.5 µs

rep

MHA210

A

0.6 A

t

MHA211

A

0.2 A

fIF = 10.7 MHz

Fig.20 Test signal 2 for interference detection from level detector.

t

1998 Mar 24 26

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

I2C-BUS AND I2C-BUS CONTROLLED FUNCTIONS

2

C-bus specification

I

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.

ATA TRANSFER FOR THE TEA6823T AND THE TEA6825T

D
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.

ATA TRANSFER TO THE IF IC

D
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

DESCRIPTION SPECIFICATION

Bus address of the

1100001X
TEA6823T and the
TEA6825T

Subaddress not used
Hardware (pin)

not available
programmable
address bits

Default settings by
power-on reset

data byte 1 bits 4 to 7 are set to

logic 0; all other bits are random

Table 2 Data to be received by the IC for data byte 1

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

2

7I

C-bus to front-end ENABLED bit 7 = 1

2

I

C-bus to front-end DISABLED bit 7 = 0

Table 3 Reference frequency setting in data byte 1;

see Table 1

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

1998 Mar 24 27

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

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;

bit4=0

divide by 200
IF-prescaler division rate;

bit4=1

divide by 25

5 sensitivity unchanged bit5=0

multi-path sensitivity switch; less

bit5=1

sensitivity by an offset of ∆m = 10%

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

bit7=0

modulation
noise blanker not deactivated bit7=1

Table 6 Data to be transmitted by the IC for data byte 2

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

EFERENCED FREQUENCY GENERATION

R

Table 7 Division ratios

REFERENCE

DIVISION RATIO

FREQUENCY

(1)

(kHz)

20500 3
12300 5

6150 10
4100 15
2460 25
1230 50

Note

1. All specified frequencies are valid for a crystal
oscillator frequency of 61.5 MHz.

Table 5 Data to be transmitted by the IC for data byte 1;

note 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

Note

1. The analog-to-digital conversion for multi-path and
level will be done during a transmission of any address

2

to the I

C-bus.

1998 Mar 24 28

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

Table 8 Output signal of reference frequency divider

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

10-11(p-p)
10-4(p-p)

11-4(p-p)

; C

10-4

; R

10-52

COUNTER

;

11-4

11-52

V
V

C
R

IF-

Table 9 IF-counter sensitivity

SYMBOL PARAMETER CONDITIONS MIN. UNIT

V

33-34

V

37-35

differential output voltage (peak-to-peak value) 0.3 0.4 0.5 V
single-ended output voltage (peak-to-peak value) 0.15 0.2 0.3 V

output capacitance −−4pF
output resistance 800 1000 1200 Ω

IF-counter sensitivity AM mode; m = 0 200 µV
IF-counter sensitivity FM mode 200 µV

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.

B0

handbook, full pagewidth

FM IF2

FM IF-PRESCALER

÷ 25 /÷ 200

prescaler setting

AM IF2

B1 B2 B3 B4 B5 B6 B7

8-BIT BINARY COUNTER

MHA205

4 ms/40 ms
counter window

Fig.21 IF-counter structure.

1998 Mar 24 29

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

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

(1)

FM

25 40 10700 E0H 625 10620.63 10779.38

AM 1 4 450 08H 250 418.25 481.75

(1)

AM

1 40 450 50H 25 446.83 453.18

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.

1998 Mar 24 30

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

INTERNAL CIRCUITRY
Table 10 Equivalent pin circuits and pin voltages

DC VOLTAGE

PIN SYMBOL

AM FM

1 QDET1 open-circuit 4.0
2 QDET2 open-circuit 4.0

(V)

EQUIVALENT CIRCUIT

1

39

2

MHA164

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

3

MHA165

6

MHA166

7

1998 Mar 24 31

MHA167

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

8 XTAL1 4.1 4.1
9 XTAL2 4.1 4.1

(V)

EQUIVALENT CIRCUIT

8 9

MHA168

10 f

11 f

12 I

ref(p)
ref(n)

ref

4.9 4.9

4.9 4.9

4.3 4.3

13 FMIF1IN1 2.3 2.3
14 FMIF1IN2 2.3 2.3

10

11

MHA169

12

MHA170

2019

1998 Mar 24 32

14

13

MHA171

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

15 TSDR 0.7 to 5.5 0.7 to 5.5

16 TSDS 0.7 to 5.5 0.7 to 5.5

(V)

EQUIVALENT CIRCUIT

15

MHA172

16

17 V

18 V

SDS

SDR

3.0 to 5.5 3.0 to 5.5

3.0 to 5.5 3.0 to 5.5

19 FMIF2OUT1 8.5 8.5
20 FMIF2OUT2 8.5 8.5

MHA173

17

MHA174

18

MHA175

2019

1998 Mar 24 33

14

13

MHA171

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

21 V

ref

AM FM

5.1 5.1

(V)

EQUIVALENT CIRCUIT

21

MHA176

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

2322

MHA177

24

MHA178

25

26 PILDET 0.4 0.4 to 7.0

1998 Mar 24 34

MHA179

26

MHA180

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

27 FMAM10.7 3.0 2.5

(V)

EQUIVALENT CIRCUIT

27

MHA181

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

29

MHA182

30

MHA183

31

MHA184

1998 Mar 24 35

32

MHA185

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

33 AMIF2IN1 2.7 0.7
34 AMIF2IN2 2.7 0.7

35 FMIN2 0.7 2.7

(V)

EQUIVALENT CIRCUIT

33

34

MHA186

35

36 DCFEED 2.7 2.7
37 FMIN1 0.7 2.7

38 LEVELADJ 2.6 2.6

MHA187

36

37

MHA188

38

MHA189

1998 Mar 24 36

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

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

(V)

EQUIVALENT CIRCUIT

1

39

2

MHA164

40

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

MHA190

41

MGK694

42

MHA192

43

MHA193

44 OUTRIGHT 3.6 3.6

1998 Mar 24 37

44

MHA194

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

AM FM

45 MPXIN 2.8 2.8

(V)

EQUIVALENT CIRCUIT

45

MHA195

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

8.5 V

5 V

46

47

49

MGK695

MHA197

48

MHA198

50 LEVELUNWEIG 1.0 to 7.0 1.0 to 7.0

1998 Mar 24 38

MHA199

50

MHA200

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DC VOLTAGE

PIN SYMBOL

51 IAC

CONTR

AM FM

0 6.0

(V)

EQUIVALENT CIRCUIT

51

MHA201

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

53

MHA202

54

MHA203

1998 Mar 24 39

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

APPLICATION INFORMATION

handbook, full pagewidth

2.2 MΩ

6.8 µH
100 nF

100 Ω

3.3 µH

BAV

99

388BN-1211Z
100
pF

330 nH

5.6 pF

6.8
L1

pF

E543SNAS

-04011

ISV

172

V

CC

+8.5 V

E543SNAS

-02010

L7

BB135

2.2 kΩ

47 pF

12 nF

MHA708

47 mH

470 Ω

47 kΩ

10 µF

1 nF

22 Ω

22 nF

4 to 10 pF

220 nF

10 pF

220 Ω

100 nF

3.6 kΩ

1.8
pF

47 Ω

220
µH

8.2 pF

BF861A

220 kΩ

BB804

1 nF

10 pF

47 kΩ

10 kΩ

3.3 nF

100 nF

100 pF

33 µF

1 µF

10 pF

22 Ω

1 µF

100 µF

1.8 pF

2.7 pF

22 pF

1 µF

V

CC

+8.5 V

33 µH

470 Ω

22
26

26
25
27

28
29

33

30

31

32
34

38

37
35

36
39
40

68 µH

270 pF

AM -

RF

AGC

TEA6810T
TEA6811T

AGC

FM

PIN
DIODE
DRIVE

BUFFER

AM/FM

OSCILLATOR

CHARGE

PUMP

10 nF

270 pF

AM/FM

AM/FM

LIMITER

AM/FM

BUFFER

PROGRAMABLE

AM/FM

LOCK

DETECTOR

310 17 20

IN-LOCK

1 mH

18

AM

:N2

DIVIDER

PHASE

DETECTOR

BUS

CONTROL

14

100 nF

47 µF
19

BAND-

GAP

AM/FM

47 µF

3.3

µH

+8.5 V

TR5

22 23

37

35
27

24

:2/:6

28

AMPLIFIER
29
19

20

13

14

8

OSCILLATOR

9

REFERENCE
FREQUENCY

6

7

TEA6823T
TEA6825T

1.5 nF

AM

IF-

FM

1 kΩ

SFP450

10 kΩ
10 kΩ

33

AM/FM

SWITCH

:N5

COUNTER

54

FMSTOP

100

nF

34

ADC

LEVEL

IF-

I2C-BUS

53

330

Ω

42

V

ref

100 kΩ

R39

100

nF

36

FM-LIMITER

AM-AMPLIFIER

LEVEL

DETECTOR

LEVEL

AMPLIFIER

20 kHz

BUFFER

ADC
MULTI­PATH

55

330

Ω

220 nF

SDASCL

LEVELADJ

100 kΩ

R40

82 kΩ

38

40

A
B

C
D

E

F

G

H

V

CC1

7PSAG­1946D = S

10
nF

100 nF

SFE10.7

21

390 Ω

330 pF

16

TR4

15

330
pF

P392BE­2049AJ = S

22 Ω

2×ZS369SCS-

TR2

11

56
pF

12

Philips 9922 521 00098

1
6

100 nF

7
2

4
5

9

100

8

nF

13

V

CCA

+5 V

68 Ω

2.7

330 Ω

Ω

k

SFE10.7

BF840

27 Ω

330 Ω

100 nF

100 nF

2144AJ

or Daiwa AT - 49

V

10 kΩ

CC

+8.5 V

61.5 MHz

SDA
SCL

10 kΩ

V

CCD

+5 V

56
pF

10 nF

SFE

10.7
22
nF

TR3

10

11

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.

Fig.22 ICE application diagram (continued in Fig.23).

1998 Mar 24 40

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

V

RDS

AMSTOP

100 kΩ

R51

68 µF

39

ref

33 kΩ

33 kΩ

43 48

10 nF

220 kΩ

3.3 nF
68 pF

220 nF

47 45

100 kΩ

R41

82 kΩ

22 nF220 nF

27 kΩ

25

handbook, full pagewidth

TOKO

P392BC-1977Z

L13

4.3 kΩ

1

2

A
B

C

D

E

F

G

TEMPERATURE

H

COMPENSATION

50

level

AM

DELOG

AMPLIFIER

PASS
HIGH

60 kHz

AVERAGE

DETECTOR

PEAK

DETECTOR

AVERAGE

DETECTOR

PEAK

DETECTOR

220

nF

CURRENT

SWITCH

AM

THRESHOLD

CONTROL

3

46 49

R

C

V

CC

8.5 V

AFC

100

16

nF

MPX

BUFFER

TEA6823T
TEA6825T

15

100

nF

3.3 MΩ

2.2 MΩ
100 nF

MUTE
SOFT

tuning

mute

17 18

HIGH

PASS

FILTER

V

int2

DETECTOR

1 MΩ

1.2 MΩ

LOW

PASS

FILTER

PILOT

CANCELLER

MPX-

DECODER

AND

MATRIX

mono

-

+

12 kΩ

33 kΩ

DETECTOR

PILOT

DETECTOR

PULSE

FORMER

INTERFERENCE

DETECTOR

NOISEMODULATION

DETECTOR

51

100 nF

PHASE

DIGITAL

PHASE

DETECTOR

f

ref

radio

mute

V

int1

radio

mute

V

int1

V

int2

V

ref

SUPPLY

21

V

LOGIC
BLOCK

19 kHz

52

10 Ω

DDD

+5 V

VCO

38 kHz

-

+

+

-

33 µF

820 kΩ

26

44

30

41

32

56

12

100 nF

31

6.8 nF

OUTRIGHT

470 nF

OUTLEFT

6.8 nF

V

CC

+8.5 V

22 µH

47 µF

47 µF

MHA709

+8.5 V

V

CCA

+5 V

4

100 nF

470 nF

120 kΩ

5

100 nF

Fig.23 ICE application diagram (continued from Fig.22).

1998 Mar 24 41

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1998 Mar 24 42

V

CCA

V

CC

+5 V

+8.5 V

47 µF

S369SCS-2144AJ (2x)

TR4

P392BE-

2049AJ = S

V

ref

1.5 nF
TR5

1 kΩ

SFP450

P392BC-1977Z

L13

100 nF

SDA
SCL

61.5 MHz

F

ref

TR3
56 pF

10 nF

33
k

Ω

1 MΩ

1.2 MΩ

12 kΩ

220 nF

22 nF

SFE10.7

4.3 kΩ

2.2 MΩ

3.3 MΩ

27 kΩ

220 nF

470 nF

120 kΩ

22 nF

100 nF

820 kΩ

100 nF

100
nF

100
nF

1

5

10

TEA6823T
TEA6825T

15

20

25

28

56

100 nF

330 Ω
330 Ω

100 nF

50

100 nF

3.3 nF
SEP

220 nF

R41

R

C

45

100 kΩ

FMSTOP

R39

220 nF

40

68 µF

82 kΩ

100 nF

35

100 nF

6.8 nF

6.8 nF

470 nF

30

29

22 µH

47 µF

10 kΩ 10 kΩ

10 nF

220 kΩ

68 pF

82 kΩ

100 kΩ

+8.5 V

33 kΩ
AMSTOP

100 kΩ

R51

33 kΩ

R40

100 kΩ

LEVELADJ

SFE10.7

330

Ω

100 nF

2.7 kΩ
BF840

390 Ω

SFE10.7

330 Ω

27 Ω

6.8 µH

100 nF

BAV

99

2.2 MΩ

100 pF

330 nH

47 ΩΩ

220 nF

12 nF

100 nF

3.6 kΩ

2.2 kΩ

47 pF

6.8 pF

BB135

E543SNAS-02010

L7

4 to 10 pF

1.8 pF

ISV172

10 pF

5.6 pF

E543SNAS

-4011
47 k

220 µH

10 pF

3.3 µH

100 Ω

3.3 nF
10 kΩ

47 kΩ

1 nF

BB

804

L1

1 nF

220 Ω

BF861A

47 mH
388BN-1211Z

470 Ω

22 Ω100 µF

22 nF

1 µF

1.8 pF

2.7 pF

1 µF

220 kΩ

22 kΩ

10 pF

10 pF

33 µF

1 µF

100 nF

100 pF

22 pF

8.2 pF

470 Ω

40

35

30

25

21

33 µH

270 pF

TEA6810T
TEA6811T

68 µH

270 pF

1

5

10

15

20

10 nF

lock

detector

100 nF

100

nF

100

100 nF

10 kΩ

10 kΩ

nF

47 µF

1 mH

V

CCD

+5 V

56 pF

TR2

330 pF

330 pF

7PSAG-1946D = S

33 µF

+8.5 V

V

CC

+8.5 V

SCL

SDA
V

CCD

+5 V

LEVEL

OUTRIGHT

RDSMPX

OUTLEFT

V

ref

MHA710

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

Fig.24 AM/FM car radio receiver with TEA6810T and TEA6825T or TEA6811T and TEA6823T.

handbook, full pagewidth

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

PACKAGE OUTLINES

VSO56: plastic very small outline package; 56 leads

D

y

Z

56

pin 1 index

SOT190-1

E

c

H

E

29

Q

A

2

A

1

L

p

L

(A )

A

X

v M

A

A

3

θ

281

w M

b

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

OUTLINE

VERSION

SOT190-1

A

max.

3.3

0.13

0.3

0.1

0.012

0.004

p

3.0

2.8

0.12

0.11

IEC JEDEC EIAJ

0.25

0.01

0.42

0.30

0.017

0.012

0.22

0.14

0.0087

0.0055

UNIT A1A2A3b

inches

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.

(1)E(2)

cD

21.65

21.35

0.85

0.84

REFERENCES

p

scale

eHELLpQZywv θ

11.1

0.75

11.0

0.44

0.0295

0.43

15.8

15.2

0.62

0.60

2.25

0.089

1.6

1.4

0.063

0.055

detail X

1.45

0.2

1.30

0.057

0.008 0.004

0.051

EUROPEAN

PROJECTION

0.1 0.1

0.004

(1)

0.90

0.55

0.035

0.022

ISSUE DATE

96-04-02
97-08-11

o

7

o

0

1998 Mar 24 43

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

VSO56: plastic very small outline package; 56 leads; face down

y

c

D

Z

56

pin 1 index

29

SOT190-2

H

E

E

L

L

p

A

1

A

2

(A )

3

Q

v M

A

X

A

θ

A

281

w M

b

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

OUTLINE

VERSION

SOT190-2

A

max.

3.3

0.13

1

0.3

0.1

0.012

0.004

A2A3b

3.0

0.25

2.8

0.12

0.01

0.11

IEC JEDEC EIAJ

0.42

0.30

0.017

0.012

p

0.22

0.14

0.0087

0.0055

UNIT A

inches

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.

(1)E(2)

cD

21.65

21.35

0.85

0.84

REFERENCES

p

scale

eHELLpQZywv θ

11.1

0.75

11.0

0.44

0.0295

0.43

15.8

15.2

0.62

0.60

2.25

0.089

1.6

1.4

0.063

0.055

detail X

1.45

0.2

1.30

0.057

0.008 0.004

0.051

EUROPEAN

PROJECTION

0.1 0.1

0.004

(1)

0.90

0.55

0.035

0.022

ISSUE DATE

96-04-02
97-08-11

o

7

o

0

1998 Mar 24 44

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

“Data Handbook IC26; Integrated Circuit Packages”

our
(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.

1998 Mar 24 45

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

DEFINITIONS

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.

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

2

PURCHASE OF PHILIPS I

C COMPONENTS

2

Purchase of Philips I
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.

C components conveys a license under the Philips’ I2C patent to use the

1998 Mar 24 46

Philips Semiconductors Preliminary specification

In Car Entertainment (ICE) car radio TEA6823T; TEA6825T

NOTES

1998 Mar 24 47

Philips Semiconductors – a worldwide company

Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,

Tel. [phone], Fax. [phone]
Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. [phone],

Fax. [phone]
Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6,

220050 MINSK, Tel. [phone], Fax. [phone]

Belgium: see The Netherlands
Brazil: see South America
Bulgaria: Philips Bulgaria Ltd., Energoproject, 15th floor,

51 James Bourchier Blvd., 1407 SOFIA,
Tel. [phone], Fax. [phone]

Canada: PHILIPS SEMICONDUCTORS/COMPONENTS,
Tel. [phone]

China/Hong Kong: 501 Hong Kong Industrial Technology Centre,
72 Tat Chee Avenue, Kowloon Tong, HONG KONG,
Tel. [phone], Fax. [phone]

Colombia: see South America
Czech Republic: see Austria
Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S,

Tel. [phone], Fax. [phone]
Finland: Sinikalliontie 3, FIN-02630 ESPOO,

Tel. [phone], Fax. [phone]
France: 51 Rue Carnot, BP317, 92156 SURESNES Cedex,

Tel. [phone], Fax. [phone]
Germany: Hammerbrookstraße 69, D-20097 HAMBURG,

Tel. [phone], Fax. [phone]
Greece: No. 15, 25th March Street, GR 17778 TAVROS/ATHENS,

Tel. [phone], Fax. [phone]

Hungary: see Austria
India: Philips INDIA Ltd, Band Box Building, 2nd floor,

254-D, Dr. Annie Besant Road, Worli, MUMBAI 400 025,
Tel. [phone], Fax. [phone]

Indonesia: see Singapore
Ireland: Newstead, Clonskeagh, DUBLIN 14,

Tel. [phone], Fax. [phone]
Israel: RAPAC Electronics, 7 Kehilat Saloniki St, PO Box 18053,

TEL AVIV 61180, Tel. [phone], Fax. [phone]
Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3,

20124 MILANO, Tel. [phone], Fax. [phone]
Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,

Tel. [phone], Fax. [phone]
Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL,

Tel. [phone], Fax. [phone]
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,

Tel. [phone], Fax. [phone]
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,

Tel. [phone]

Middle East: see Italy

Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB,

Tel. [phone], Fax. [phone]
New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,

Tel. [phone], Fax. [phone]
Norway: Box 1, Manglerud 0612, OSLO,

Tel. [phone], Fax. [phone]
Philippines: Philips Semiconductors Philippines Inc.,

106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
Metro MANILA, Tel. [phone], Fax. [phone]

Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA,
Tel. [phone], Fax. [phone]

Portugal: see Spain
Romania: see Italy
Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW,

Tel. [phone], Fax. [phone]
Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,

Tel. [phone], Fax. [phone]

Slovakia: see Austria
Slovenia: see Italy
South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale,

2092 JOHANNESBURG, P.O. Box 7430 Johannesburg 2000,
Tel. [phone], Fax. [phone]

South America: Al. Vicente Pinzon, 173, 6th floor,
04547-130 SÃO PAULO, SP, Brazil,
Tel. [phone], Fax. [phone]

Spain: Balmes 22, 08007 BARCELONA,
Tel. [phone], Fax. [phone]

Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM,
Tel. [phone], Fax. [phone]

Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,
Tel. [phone], Fax. [phone]

Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1,
TAIPEI, Taiwan Tel. [phone], Fax. [phone]

Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,
209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260,
Tel. [phone], Fax. [phone]

Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,
Tel. [phone], Fax. [phone]

Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7,
252042 KIEV, Tel. [phone], Fax. [phone]

United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes,
MIDDLESEX UB3 5BX, Tel. [phone], Fax. [phone]

United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. [phone]

Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,

Tel. [phone], Fax.[phone]

For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. [phone]

© 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.

Internet: http://www.semiconductors.philips.com

Printed in The Netherlands 545102/1200/01/pp48 Date of release: 1998 Mar 24 Document order number: 9397 750 02316