TDA9889 Ver la hoja de datos (PDF) - Philips Electronics
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TDA9889 Datasheet PDF : 22 Pages
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Philips Semiconductors
DVB selective AGC amplifier
Product specification
TDA9888TS; TDA9889TS
SYMBOL
PARAMETER
CONDITIONS
αN+1
C/N
αd3
αd2
suppression of IF input
frequencies below wanted
band at low IF output
carrier-to-noise ratio at low IF
intermodulation at
fLIF1 = 4.1 MHz or
fLIF2 = 5.9 MHz
in-band harmonics
low IF = multiple of 1.31 MHz
up to 7.86 MHz
input frequency between
21 and 31 MHz; referenced
to 36 MHz
at ∆f = 4.9 MHz; note 4a;
see Fig.5
at ∆f = 4.9 MHz; note 4b;
see Fig.5
fIF1 = fosc + 4.7 MHz and
fIF2 = fosc + 5.3 MHz;
see Fig.6
fIF1 = fosc + 1.31 MHz
αH(spur)
in-band spurious elements
(1 to 9 MHz)
AC load: ZL(diff) > 1.7 kΩ
out-band spurious elements
(>9 MHz)
PSRR
power supply ripple rejection
[residual ripple FM, peak
deviation ∆f at 2 V (p-p) low IF
signal]
power supply ripple rejection
[residual ripple AM, modulation
factor m at 2 V (p-p) low IF
signal]
fripple = 70 Hz; see Fig.7
fripple = 1 kHz; see Fig.7
fripple = 10 kHz; see Fig.7
fripple = 100 kHz; see Fig.7
fripple = 70 Hz; see Fig.7
IF AGC control; pin AGC
Ii(sink)(max)
Vi(max)
maximum input sink current
maximum allowable input
voltage
Gv
SAGC
gain control voltage range
negative control steepness
∆GIF/∆Vcon
Gv = 0.8 to 2.2 V
Tuner AGC; pin TAGC, operating as current output; see Figs 3 and 4
Vi(IF)(min)(p-p)
minimum controlled IF input
signal voltage between
pins IF1 and IF2
(peak-to-peak value)
RTOP = 22 kΩ;
ITAGC(sink) = 100 µA
Vi(IF)(max)(p-p) maximum controlled IF input
signal voltage between
pins IF1 and IF2
(peak-to-peak value)
Vi(IF)/∆T
variation of AGC controlled IF
input voltage with temperature
Isink
sink current (tuner AGC
discharge current)
RTOP = 0 Ω;
ITAGC(sink) = 100 µA
RTOP = 8.2 kΩ;
ITAGC(sink) = 100 µA
VTAGC = 1 V
MIN.
30
112
90
35
40
50
50
−
−
−
−
−
−
−
0
−
−
102
−
400
TYP.
35
116
100
−
−
−
−
−
25
1 400
2 700
1.4
−
−
−
45
81
106
−
500
MAX. UNIT
−
dB
−
dBc/Hz
−
dBc/Hz
−
dB
−
dB
−
dB
−
dB
5
Hz
35
Hz
2000 Hz
4000 Hz
−
%
2
µA
VP
V
3
V
−
dB/V
84
dBµV
−
dBµV
0.07 dB/K
600
µA
2004 Nov 02
9
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