TDA9821 datasheet(7/16 Pages) PHILIPS

7 / 16 page

1996 Nov 20

Philips Semiconductors

Product speciﬁcation

Dual channel TV FM intercarrier

sound demodulator

TDA9821

Output ampliﬁers AF1 (pin 8) and AF2 (pin 7) and overall performance

DC output voltage

1.8

2.1

2.5

Vo(rms)

output signal (RMS value)

0.4

0.5

0.6

clipping level

1.2

−−

AC peak current

−−

1.5

DC source current

−−

2.0

∆Vo/Vo

absolute drift of AF output signals

Tamb = 0 to 70 °C

−

0.7

−

∆Vo1/∆Vo2 relative drift of AF output signals

Tamb = 0 to 70 °C

−

0.2

−

∆V

AF(1-2)

negative/positive difference between

output signals

µs de-emphasis

−

0.3

1.0

output resistance

−

100

−Ω

αcs(ar)

adjustment range of channel separation

Rs = 1.1 kΩ;

Rpot = 2.2 kΩ

1.5

−−

THD

total harmonic distortion

µs de-emphasis

pin 8

−

0.1

0.3

pin 7

−

0.25

0.5

αAM

AM suppression of AF(1-2)

µs de-emphasis;

m = 0.3; fAM = 1 kHz

−

signal plus noise-to-noise ratio

µs de-emphasis;

in accordance with

“CCIR 468-3”

−

AFresp

LOW-level AF frequency response

∆VAF(1-2) = −3dB

−−

HIGH-level AF frequency response

200

−−

kHz

AMres(rms)

residual sound carrier signal and

harmonics (RMS value)

−

α8/7

crosstalk attenuation between

AF outputs

f = 50 to 12500 Hz

−

supply voltage ripple rejection

VRR < 200 mV;

fr =20Hzto200 kHz

VP =5V

−

VP =8V

−

supply voltage ripple rejection with

improved application for VP =5V

fr = 20 Hz to 3 kHz;

see Fig.3 and note 2

VP = 4.5 V

−

VP = 4.75 V

−

VP = 5.0 V

−

VP = 5.5 V

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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