Philips TEA6822T, TEA6820T Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TEA6820T; TEA6822T

In Car Entertainment (ICE) car radio

Preliminary speciﬁcation Supersedes data of 1996 Oct 18 File under Integrated Circuits, IC01

1997 Feb 12

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

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

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 TEA6820T together with the TEA6810T and the TEA6822T together with the TEA6811T forms an AM/FM electronic tuned car radio in a double conversion receiver concept.

TYPE NUMBER

NAME DESCRIPTION VERSION

TEA6820T VSO56 plastic very small outline package; 56 leads; face down SOT190-2 TEA6822T VSO56 plastic very small outline package; 56 leads SOT190-1

PACKAGE

1997 Feb 12 2

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DDA1

19+I20

22+I23

DDA2

DDA3

DDD

SN+

-------------N

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

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 5) 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.

1997 Feb 12 3

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

BLOCK DIAGRAM

+8.5 V

, full pagewidth

1 kΩ

220 kΩ

68 pF

10 nF

3.3 nF

RDS

33 kΩ

ref

AMSTOP

TOKO

P392BC-1977Z

LEVELADJ

ref

FMSTOP

SFP450

1.5 nF

TOKO

22 nF220 nF

82 kΩ

220 nF

100 kΩ

L13

62 pF

R40 R51

100 kΩ

R39

100 kΩ

TR5

7PSAG-1946D = S

27 kΩ

100 kΩ

82 kΩ

i.c.

R41

33 kΩ

68 µF

100 nF

100

CC1

43 48

39 2

4.3 kΩ

42 38

22 23

SFE10.7

10.7 MHz

VCO

PHASE

LOW

PASS

SOFT

MPX

AFC

FM-LIMITER

AM/FM

373635

330 Ω

LOGIC

BLOCK

PHASE

DIGITAL

DETECTOR

FILTER

MUTE

BUFFER

DELOG

LEVEL

DETECTOR

AM-AMPLIFIER

SWITCH

100 nF

10.7 MHz

820 kΩ

38 kHz

19 kHz

ref

PILOT

TEA6820T

TEA6822T

PASS

HIGH

AMPLIFIER

LEVEL

:N5

IF-

÷ 2 /÷ 6

22 nF

6.8 nF

100 nF

DETECTOR

CANCELLER

60 kHz

AMPLIFIER

100 nF

radio

mute

AVERAGE

10.7 MHz

OUTRIGHT

MPX-

DETECTOR

20 kHz

56 pF

72.2 MHz

470 nF

int1

AND

DECODER

tuning

mute

PEAK

DETECTOR

BUFFER

10

MATRIX

OUTLEFT

6.8 nF

radio

mute

mono

AVERAGE

DETECTOR

ADC

PATH

MULTI-

ADC

LEVEL

OSCILLATOR

61.5 MHz PHILIPS

9922 521 00098

22 µH

100

PULSE

FORMER

HIGH

PASS

FILTER

PEAK

DETECTOR

IF-

COUNTER

FREQUENCY

REFERENCE

ref

or Daiwa AT - 49

47 µF

SUPPLY

int2

int1

DETECTOR

INTERFERENCE

SWITCH

CURRENT

C-BUS

10 kΩ

SCL

SDA

470 nF

10 kΩ

CCAN

120 kΩ

NOISE

DETECTOR

int2

TURE

SATION

COMPEN-

TEMPERA-

100 nF

+5 V

47 µF

100

33 µF

52 21

12 kΩ

1 MΩ

17 18

3.3 MΩ

50 49

Ω

330

Ω

330

10 kΩ

MHA253

10 Ω

CCDIG

+5 V

ref

100 nF

33 kΩ

1.2 MΩ

100 nF

2.2 MΩ

100

100 nF

10 kΩ

220 nF

DDD

level

SDASCL

+5 V

Fig.1 Block diagram.

1997 Feb 12 4

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

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 oscillator1 XTAL2 9 crystal oscillator2 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

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 i.c. 46 internally connected 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)

1997 Feb 12 5

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

handbook, halfpage

TSWITCH

HFBUS1 HFBUS2

FMIF1IN1 FMIF1IN2

FMIF2OUT1 FMIF2OUT2

AMIF2OUT1 AMIF2OUT2

FMAMDEC

PHASEDET

FMAM10.7

QDET1 QDET2

AGND

DDA1

XTAL1 XTAL2

ref(p)

ref(n)

ref

TSDR

TSDS

SDS

SDR

ref

PILDET

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

TEA6822T

MHA204

DDA3

DGND

SCL

SDA

DDD

IAC

LEVELUNWEIG

mute/AML

AMAFOUT

MPXOUT

i.c.

MPXIN

OUTRIGHT

RDS/AMSTOP

FMSTOP

OUTLEFT

MPBUF

AFC

LEVELADJ

FMIN1

DCFEED

FMIN2

AMIF2IN2

AMIF2IN1

DEEMPHL

DEEMPHR

AFGND

FMIFAMPOUT

CONTR

handbook, halfpage

IAC

LEVELUNWEIG

mute/AML

AMAFOUT

OUTRIGHT

RDS/AMSTOP

OUTLEFT

LEVELADJ

AMIF2IN2 AMIF2IN1

DEEMPHL

DEEMPHR

FMIFAMPOUT

DDA3

DGND

SCL

SDA

DDD

CONTR

MPXOUT

i.c.

MPXIN

FMSTOP

MPBUF

AFC

FMIN1

DCFEED

FMIN2

AFGND

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

TEA6820T

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

MHA419

QDET1

QDET2

TSWITCH

AGND

DDA1

HFBUS1

HFBUS2

XTAL1

XTAL2

ref(p)

ref(n)

ref

FMIF1IN1

FMIF1IN2

TSDR

TSDS

SDS

SDR

FMIF2OUT1

FMIF2OUT2

ref

AMIF2OUT1

AMIF2OUT2

FMAMDEC

PHASEDET

PILDET

FMAM10.7

DDA2

Fig.2 Pin configuration for TEA6822T.

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).

1997 Feb 12 6

Fig.3 Pin configuration for TEA6820T (top view).

A 3rd order low-pass filter (f

= 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.

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

DDA1

DDA2

DDA3

DDD

stg

amb

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

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

Current consumption

DDA1

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

AM mode 14 17 21 mA

DDA2

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

DDD

19+I20

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

mixer bias current 2.4 3.0 3.6 mA

mixer leakage current in AM position −− 2µA I

19IF2/V13-14IF1

opt

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

1997 Feb 12 7

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Oscillator

osc

∆f

osc

/∆T temperature dependence of

∆f

osc

FM-IF

ampliﬁer

27-24 max(rms)

29-4 max(rms)

29-4/V27-24

∆V

29-4/V27-24

FM-IF

limiter

o 1-2(p-p)

1-2/V37-35

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 loaded with 330 Ω;

912 15dB

see Fig.5

gain temperature dependence −25 °C<T

+50 °C<T

< +50 °C − 0.1 − dB/K

amb

< +75 °C0 −−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

1997 Feb 12 8

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

FM demodulator

47-4(rms)

43-4(rms)

37-35(rms)

∆V

43DC

43FM/V43AM

47FM/V47AM

∆V

43-44AFCdis

/∆V

43-44AFCactive

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

αAF= −3dB − 25 40 µV

(RMS value) 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+

-------------N

SN+

-------------N

demod

26 dB=

46 dB=

= typical value 10 µV<V 80 µV<V

AM suppression ∆f= 22.5 kHz;

= 1 kHz;

modAM

<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

= 1 to 300 mV 50 60 − dB

37-35

28 32 − dB voltage (AFC) efﬁciency at 100 kHz detune from 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

= 300 µV

− 0.1 0.35 %

to 800 mV pin 47;

37-35

= 1 to 800 mV

− 0.1 0.35 %

1997 Feb 12 9

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Unweighted voltage level

50-4

/∆V

∆V

50-4

37-35

/VK temperature dependence V

∆V

50-4

50(max)source

50(max)sink

o50

ADJUSTMENT OF UNWEIGHTED VOLTAGE LEVEL AND V ∆V

38-4

/∆V

∆V

50-4

38-4

i38

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

43/V47

∆α/∆V

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

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

≤ 2.5 µV 1.6 2.2 3.0 V

37-35

= 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 α = −6dB − 25 − dB/V

UTE VOLTAGE; note 3

∆V

49-4

/∆V

37-35

mute voltage V38= 2.52 V

37-35

slope of mute voltage 100 µV (RMS) ≤ V

< 300 mV

/VK temperature dependence V

∆V

49-4

37-35

1997 Feb 12 10

< 2.5 µV 1.8 2.2 3.2 V = 1.0 mV 2.7 3.4 4.7 V

37-35

0.75 0.9 1.05 V/20 dB

=1mV − 5.0 − mV/VK

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

ATTACK AND DECAY TIME FOR MUTE VOLTAGE I

∆f muting activated by 60 kHz FM

43/V47

IME CONSTANT FOR MONO/STEREO BLEND VOLTAGE; note 4

m mono/stereo blend activated by

∆f mono/stereo blend activated by

charge current pin 3 connected to GND − 3.5 −µA discharge current pin 3 connected to GND −−4.0 −µA charge current pin 3 connected to pin 5 − 150 −µA discharge current pin 3 connected to pin 5 −−170 −µA

interference

maximum mute depth by 60 kHz FM interference

charge current V

<3V; V

= 60 kHz

mod

pin 3 connected to GND;

43/V47

pin 3 connected to pin 5;

43/V47

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

= 3 mV;

37-35

=9dB

=6dB

=3mV;

− 40 − kHz

− 0.6 −µA

pin 3 connected to GND

discharge current V

37-35

= 3 mV;

−−17 −µA

pin 3 connected to GND

charge current V

37-35

= 3 mV;

− 23 −µA

pin 3 connected to pin 5

discharge current V

37-35

= 3 mV;

−−750 −µA

pin 3 connected to pin 5

20 kHz AM interference

V R f

16 L16

mod

<2V; V

>50MΩ;

= 20 kHz;

37-35

=3mV;

data byte 2 bit 5 = 0

pin 3 connected to GND − 45 − %

pin 3 connected to pin 5 − 45 − %

data byte 2 bit 5 = 1

pin 3 connected to GND − 55 − %

pin 3 connected to pin 5 − 55 − %

60 kHz FM interference

V R f

16 L16

mod

<2V; V

>50MΩ;

= 60 kHz

37-35

=3mV;

pin 3 connected to GND − 50 − kHz

pin 3 connected to pin 5 − 50 − kHz

1997 Feb 12 11

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

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

charge current V

discharge current V

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

ULTI-PATH DETECTOR

M f

multi-path detector band-pass centre frequency

band-pass bandwidth 7.0 −−kHz

Reference voltage

V ∆V I

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

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

22IF2/V27-24IF1

27-24

22-23

conversion gain 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

= 3 mV;

− 0.6 −µA

pin 3 connected to GND

37-35

= 3 mV;

−−0.7 −µA

pin 3 connected to GND

37-35

= 3 mV;

− 41 −µA

pin 3 connected to pin 5

37-35

= 3 mV;

−−44 −µA

pin 3 connected to pin 5 V

R f

15 L15

mod

<2V; V

>50MΩ;

= 20 kHz

37-35

=3mV;

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

=3mV;

pin 3 connected to GND − 50 − kHz

pin 3 connected to pin 5 − 50 − kHz

− 20 − kHz

12 15 − V

1997 Feb 12 12

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DETECTOR; notes 8 and 9

AM V

48-4(rms)

33-34(rms)

AF output level (RMS value) R

sensitivity voltage (RMS value) − 50 75 µV

AM-IF

minimum input voltage

(RMS value) AM-IF

maximum input voltage

(RMS value)

33-34

24-23

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

1997 Feb 12 13

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

STEREO DECODER CHARACTERISTICS

Input signal (∆f = 75 kHz) V

MPX(p-p)

nominal input resistor (pin 45) Ri= 168 kΩ; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

44-4(rms)

41-4(rms)

; V

44-4

; I

44(max)

44-4/V41-4

; R

o44

Lmin

SN+

-------------N

;

41-4

41(max)

o41

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 resistor −−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; modulation frequency f

=25°C; unless otherwise specified.

amb

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

mod

Carrier and harmonic suppression at the output; note 1

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

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

f = 67 kHz 70 −−dB

authorization

114

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

Mono/stereo control

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

− 0.765V21control voltage channel separation see Fig.17

α =6dB −−110 − mV α =16dB −−40 − mV

= 10 kHz; f = 13 kHz; f

= 1 kHz − 60 − dB

spur

= 1 kHz − 58 − dB

spur

− 30 − dB

eff

− 2 − dB

1997 Feb 12 14

Philips Semiconductors Preliminary speciﬁcation

In Car Entertainment (ICE) car radio TEA6820T; TEA6822T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Muting functions (mute via I2C-bus)

, ∆V

∆V

mute

High-cut control; see Fig.18

− 0.765V21control voltage note 3

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)

de-emph

=50µs0−−mV =80µs −300 −−mV

control range of de-emphasis 50 − 80 µs

oscillator frequency range 225 228 231 kHz

NTERFERENCE DETECTION FULLY INTERNAL FROM LEVEL DETECTOR

I t

sup

interference suppression time 40 50 −µs

TRIGGER THRESHOLD CONTROL I

51 charge

51 discharge

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

offset

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

gate input offset current at pins 31

V38= 2.52 V; note 5 −−0.8 mV

= 2.52 V; note 6 100 −−mV

= 2.52 V; note 6 5.0 −−mV

= 2.52 V; note 6 100 −−mV

= 100 mV; ∆f=0kHz − 6.4 − V

37-35

= 100 mV; ∆f=75kHz − 520 − mV

37-35

− 20 50 nA and 32 during suppression pulse duration

1997 Feb 12 15

+ 33 hidden pages