TDA9885 Philips Semiconductors, TDA9885 Datasheet - Page 27

• Manufacturer Part Number: TDA9885
• Description: I2C-bus controlled single and multistandard alignment-free IF-PLL demodulators
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2003 Oct 02
S/N
S/N
VIF-AGC; note 12
t
t
V
CR
V
P
I
I
I
Tuner AGC (pin TAGC); see Figs 7 to 9
V
V
resp(inc)
resp(dec)
ch(max)
ch(add)
dch
V
VAGC
th(VIF)
IN
i(VIF)(start1)(rms)
i(VIF)(start2)(rms)
I
alignment-free IF-PLL demodulators
2
i(VIF)
stps
SYMBOL
W
UW
VAGC
C-bus controlled single and multistandard
weighted signal-to-noise ratio
unweighted signal-to-noise ratio note 7
AGC response time to an
increasing VIF step
AGC response time to a
decreasing VIF step
VIF amplitude step for activating
AGC fast mode
gain control voltage range
control steepness
threshold voltage for high level
VIF input
maximum charge current
additional charge current
discharge current
VIF input signal voltage for
minimum starting point of tuner
takeover at pins VIF1 and VIF2
(RMS value)
VIF input signal voltage for
maximum starting point of tuner
takeover at pins VIF1 and VIF2
(RMS value)
PARAMETER
weighted in accordance
with “CCIR 567” ;
see Fig.11; note 7
negative modulation;
20 dB; note 13
positive modulation;
20 dB; note 13
negative modulation;
20 dB; note 13
positive modulation;
20 dB; note 13
L standard; fast mode
L standard; normal
mode; note 13
L standard
see Fig.7
definition:
V
see Tables 5 and 6
L standard
L standard: in the event
of missing VITS pulses
and no white video
content
L standard; normal
mode
L standard; fast mode
I
R
no R
I
I
R
and +15 dB via I
(see Table 13)
TAGC
2
TAGC
G
VAGC
C-bus (see Table 13)
TOP
TOP
VIF
27
CONDITIONS
TOP
= 120 A;
= 22 k or
= 120 A;
= 0
/ V
= 2 to 3 V
and 15 dB via
VAGC
or no R
;
2
C-bus
TOP
56
48
0.8
120
45
2
MIN.
TDA9885; TDA9886
59
52
4
2.6
3
890
2.6
143
200
100
100
35
1.8
2
90
6
80
TYP.
Product specification
3.5
320
5
10
MAX.
dB
dB
ms
ms
ms
ms
ms/dB
ms/dB
dB
V
dB/V
nA
nA
mV
mV
V
A
A
UNIT