TEA6820T Просмотр технического описания (PDF) - Philips Electronics

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TEA6820T

In Car Entertainment (ICE) car radio

Philips Electronics 

Philips Semiconductors

In Car Entertainment (ICE) car radio

Preliminary specification

TEA6820T; TEA6822T

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP.

FM demodulator

V47-4(rms)

V43-4(rms)

MPX output voltage (RMS value)

MPX output voltage for RDS

(RMS value)

160 200

160 200

V37-35(rms)

start of limiting voltage

(RMS value)

αAF = −3 dB

−

25

V37-35(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)

S------N+-----N--- = 26 dB

−

30

S------N+-----N--- = 46 dB

−

70

∆V43DC

residual DC-offset voltage

∆Ldemod = typical value

10 µV < V37-35 < 80 µV −

100

80 µV < V37-35 < 800 mV −

10

V43FM/V43AM

AM suppression

∆f = 22.5 kHz;

fmodAM = 1 kHz;

mAM = 30%;

V37-35 = 3 to 300 mV

50 60

V47FM/V47AM

AM suppression

V37-35 = 1 to 300 mV

50 60

∆V43-44AFCdis

demodulator frequency control

/∆V43-44AFCactive voltage (AFC) efficiency at

100 kHz detune from exact tuning

28 32

Ro

output resistance (pin 47)

output resistance (pin 43)

AF bandwidth (pin 43)

−

−

−

−

200 −

S------N+-----N---

signal plus noise-to-noise ratio

66 75

THD

total harmonic distortion

detuning ≤50 kHz;

∆f = 75 kHz; fmod = 1 kHz

without de-emphasis;

Ldemod = typical value

pin 43;

−

0.1

V37-35 = 300 µV

to 800 mV

pin 47;

−

0.1

V37-35 = 1 to 800 mV

MAX. UNIT

240 mV

240 mV

40 µV

45 µV

100 µV

1000 mV

30 mV

−

dB

−

dB

−

dB

3

kΩ

1.5 kΩ

−

kHz

−

dB

0.35 %

0.35 %

1997 Feb 12

9

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