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
CHARACTERISTICS
VP = 5 V; Tamb = 25 °C; 8 MHz system; see Tables 1 or 2, CW test input signal is used for specification;
Vi(IF)(rms) = 10 mV frequency fIF = 36 MHz for low IF output of 5 MHz; IF input from 50 Ω via broadband transformer
1 : 1; gain controlled amplifier adjusted to low IF differential output of 2 V (p-p); measurements taken in test circuit of
Fig.11 with external 4 MHz reference signal of 140 mV (RMS); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply; pin VP
VP
supply voltage
note 1
IP
supply current
Ptot
total power dissipation
4.5
5
46
55
−
275
IF amplifier; pins IF1 and IF2; differential
GIF(max)
maximum conversion gain
output peak-to-peak level to 85
90
GIF(min)
minimum conversion gain
input RMS level ratio
−
20
GIF(cr)
IF gain control range
see Fig.3
60
70
BIF(−3dB)(ll) lower limit −3 dB IF bandwidth note 2
−
15
BIF(−3dB)(ul) upper limit −3 dB IF bandwidth note 2
−
80
Ri(dif)
differential input resistance
note 2
−
2
Ci(dif)
differential input capacitance note 2
−
3
VI
DC input voltage
−
1.9
Low IF output signal; pins LIF1 and LIF2; differential; see Fig.8
Vo(LIF)(p-p)
typical low IF operating output
voltage (peak-to-peak value)
−
2
Vclip(u)
upper clipping voltage level
(single-ended)
2.9
−
Vclip(l)
lower clipping voltage level
(single-ended)
−
−
Ro(diff)
VO
Ibias(int)
output resistance (differential) note 2
DC output voltage
internal DC bias current for
emitter-follower (single-ended)
−
−
−
2
0.8
1
Io(source)(max) maximum AC and DC output
source current (single-ended)
2.5
−
Io(sink)(max) maximum AC and DC output note 3
sink current (single-ended)
0.6
−
ZL(diff)
αLIF
differential load impedance
low IF band amplitude
characteristic
note 2
0 dB at middle of band
(standard independent)
1.7
−
−0.9
−
td(g)(LIF)
low IF band group delay ripple from 1 MHz to 2 MHz
−
−
from 2 MHz to end of band −
−
αN−1
low-pass filter attenuation
6 MHz band; at 11.75 MHz 15
−
7 MHz band; at 13.75 MHz 15
−
8 MHz band; at 15.75 MHz 15
−
α27MHz
low-pass filter attenuation
any band; at 27 MHz
40
50
5.5
V
64
mA
352
mW
−
dB
23
dB
−
dB
−
MHz
−
MHz
−
kΩ
−
pF
−
V
−
V
−
V
0.6
V
150
Ω
−
V
−
mA
−
mA
−
mA
−
kΩ
+0.9 dB
150
ns
100
ns
−
dB
−
dB
−
dB
−
dB
2004 Nov 02
8
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