TDA9845 datasheet(10/20 Pages) PHILIPS

Nome de Peças	TDA9845

Descrição Electrónicos	TV and VTR stereo/dual sound processor with digital identification

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Fabricante Electrônico	PHILIPS [NXP Semiconductors]

Página de início	http://www.nxp.com

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10 / 20 page

1995 Mar 20

10

Philips Semiconductors

Preliminary speciﬁcation

TV and VTR stereo/dual sound processor

with digital identiﬁcation

TDA9845

Pilot processing

Vi pil(rms)

pilot input voltage level at

pin 6 (RMS value)

unmodulated

5

−

100

mV

Ri pil

pilot input resistance

500

1000

−

k

Ω

Ci pil

pilot input capacitance

−−

3pF

m

modulation depth

AM

25

50

75

%

∆fpil

pilot PLL pull-in frequency

range (referenced to

fpil = 54.6875 kHz)

fω = 9.988 MHz

lower side

−405

−−405

Hz

upper side

192

−

192

Hz

fω = 10.008 MHz

lower side

−296

−−296

Hz

upper side

302

−

302

Hz

fω = 10.028 MHz

lower side

−188

−−188

Hz

upper side

411

−

411

Hz

tpil

pilot PLL pull-in time

0

−

1.7

ms

fLP

low-pass frequency

response

−3 dB

450

600

750

Hz

R4

low-pass output resistance

18.75

25

31.25

k

Ω

V4(rms)

identiﬁcation threshold

voltage (RMS value)

−−

70

mV

QL

loaded quality factor of

resonance circuit

HIGH sensitivity;

see Fig.1

40

−

50

loaded quality factor of

resonance circuit with ﬁxed

coil

sensitivity loss 2 to 3 dB;

see Fig.2

−

12

−

tacqui AGC

AGC acquisition time

Vi pil(rms) switched from

0 to 100 mV RMS value

−−

0.1

s

Identiﬁcation (internal functions)

Vi tuner

identiﬁcation voltage

sensitivity

note 4

−

28

−

dB

µV

C/N

pilot carrier-to-noise ratio for

start of identiﬁcation

note 5

−

33

−

dB/Hz

H

hysteresis

note 4

−−

2dB

fdet

pull-in frequency range of

identiﬁcation PLL

(referenced to

fdet STEREO = 117.48 Hz and

fdet DUAL = 274.12 Hz)

lower side

STEREO

−0.63

−−0.63

Hz

DUAL

−0.69

−−0.69

Hz

upper side

STEREO

0.63

−

0.63

Hz

DUAL

0.69

−

0.69

Hz

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Nº de peça semelhante - TDA9845

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
NXP Semiconductors	TDA9840	200Kb / 28P	TV and VTR stereo/dual sound processor with digital identification and I2C-bus control 1998 Jul 03
	TDA9840T	200Kb / 28P	TV and VTR stereo/dual sound processor with digital identification and I2C-bus control 1998 Jul 03
	TDA9847	147Kb / 28P	TV and VTR stereo/dual sound processor with digital identification 1995 May 23
	TDA9847T	147Kb / 28P	TV and VTR stereo/dual sound processor with digital identification 1995 May 23

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Descrição semelhante - TDA9845

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NXP Semiconductors	TDA9847	147Kb / 28P	TV and VTR stereo/dual sound processor with digital identification 1995 May 23
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	TDA9875A	296Kb / 96P	Digital TV Sound Processor DTVSP 1999 Dec 20
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TDA9845 Folha de dados(PDF) 10 Page - NXP Semiconductors

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Nº de peça semelhante - TDA9845

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