TDA9840 datasheet(12/28 Pages) PHILIPS

12 / 28 page

1998 Jul 03

Philips Semiconductors

Product speciﬁcation

TV and VTR stereo/dual sound processor

with digital identiﬁcation and I2C-bus control

TDA9840

fdet

pull-in frequency range of

identiﬁcation PLL (referred to

fdet STEREO = 117.48 Hz and

fdet DUAL = 274.12 Hz)

normal mode

lower side

STEREO

−0.38

−−0.38

DUAL

−0.69

−−0.69

normal mode

upper side

STEREO

0.69

−

0.69

DUAL

0.69

−

0.69

fast mode lower side

STEREO

−0.89

−−0.89

DUAL

−2.05

−−2.05

fast mode upper side

STEREO

1.15

−

1.15

DUAL

2.05

−

2.05

tdet

pull-in time of identiﬁcation

PLL (referred to

fdet STEREO = 117.48 Hz and

fdet DUAL = 274.12 Hz)

normal mode

STEREO

−

1.35

DUAL

−

0.72

fast mode

STEREO

−

0.57

DUAL

−

0.25

fident

identiﬁcation window

frequency width (referred to

fdet STEREO = 117.48 Hz and

fdet DUAL = 274.12 Hz)

normal mode; note 9

STEREO

2.0

−

2.0

DUAL

2.3

−

2.3

fast mode; note 9

STEREO

3.8

−

3.8

DUAL

5.8

−

5.8

tintegr

integrator time constant

normal mode

0.94

−

0.94

fast mode

0.47

−

0.47

tident(on)

total identiﬁcation time on

normal mode; note 10

STEREO

0.35

−

2.3

DUAL

0.35

−

2.0

fast mode; note 10

STEREO

0.175

−

1.1

DUAL

0.175

−

1.0

tident(off)

total identiﬁcation time off

normal mode; note 11

STEREO

0.6

−

1.6

DUAL

0.6

−

1.6

fast mode; note 11

STEREO

0.3

−

0.8

DUAL

0.3

−

0.8

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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