TDA9885TSSLASHV3 datasheet(27/56 Pages) PHILIPS

27 / 56 page

2003 Oct 02

Philips Semiconductors

Product speciﬁcation

I2C-bus controlled single and multistandard

alignment-free IF-PLL demodulators

TDA9885; TDA9886

S/NW

weighted signal-to-noise ratio

weighted in accordance

with

“CCIR 567”;

see Fig.11; note 7

−

S/NUW

unweighted signal-to-noise ratio note 7

−

VIF-AGC; note 12

tresp(inc)

AGC response time to an

increasing VIF step

negative modulation;

20 dB; note 13

−

positive modulation;

20 dB; note 13

−

2.6

−

tresp(dec)

AGC response time to a

decreasing VIF step

negative modulation;

20 dB; note 13

−

positive modulation;

20 dB; note 13

−

890

−

L standard; fast mode

−

2.6

−

ms/dB

L standard; normal

mode; note 13

−

143

−

ms/dB

∆V

i(VIF)

VIF amplitude step for activating

AGC fast mode

L standard

−2

−6

−10

VVAGC

gain control voltage range

see Fig.7

0.8

−

3.5

CRstps

control steepness

deﬁnition:

∆GVIF/∆VVAGC;

VVAGC =2to3V

−−80

−

dB/V

Vth(VIF)

threshold voltage for high level

VIF input

see Tables 5 and 6

120

200

320

µV

PIN VAGC

Ich(max)

maximum charge current

L standard

−

100

−µA

Ich(add)

additional charge current

L standard: in the event

of missing VITS pulses

and no white video

content

−

100

−

Idch

discharge current

L standard; normal

mode

−

L standard; fast mode

−

1.8

−µA

Tuner AGC (pin TAGC); see Figs 7 to 9

Vi(VIF)(start1)(rms)

VIF input signal voltage for

minimum starting point of tuner

takeover at pins VIF1 and VIF2

(RMS value)

ITAGC = 120 µA;

RTOP =22kΩ or

no RTOP and −15 dB via

I2C-bus (see Table 13)

−

25mV

Vi(VIF)(start2)(rms)

VIF input signal voltage for

maximum starting point of tuner

takeover at pins VIF1 and VIF2

(RMS value)

ITAGC = 120 µA;

RTOP =0 Ω or no RTOP

and +15 dB via I2C-bus

(see Table 13)

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

TDA9885TS/V3 Datasheet(PDF) 27 Page - NXP Semiconductors

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