Philips Semiconductors
Product specification
DVB selective AGC amplifier
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
IP
supply voltage
supply current
total power dissipation
note 1
4.5
5
5.5
V
46
55
64
mA
Ptot
−
275
352
mW
IF amplifier; pins IF1 and IF2; differential
GIF(max)
GIF(min)
GIF(cr)
maximum conversion gain
minimum conversion gain
IF gain control range
output peak-to-peak level to 85
90
20
70
15
80
2
−
dB
input RMS level ratio
−
23
−
dB
see Fig.3
60
−
dB
BIF(−3dB)(ll)
BIF(−3dB)(ul)
Ri(dif)
lower limit −3 dB IF bandwidth note 2
upper limit −3 dB IF bandwidth note 2
−
MHz
MHz
kΩ
pF
−
−
differential input resistance
differential input capacitance
DC input voltage
note 2
note 2
−
−
Ci(dif)
−
3
−
VI
−
1.9
−
V
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
−
−
−
V
V
V
Vclip(u)
upper clipping voltage level
(single-ended)
2.9
−
−
Vclip(l)
lower clipping voltage level
(single-ended)
0.6
Ro(diff)
VO
output resistance (differential) note 2
DC output voltage
−
−
2
1
150
−
Ω
−
V
Ibias(int)
internal DC bias current for
0.8
−
mA
emitter-follower (single-ended)
Io(source)(max) maximum AC and DC output
source current (single-ended)
2.5
0.6
−
−
−
−
mA
mA
Io(sink)(max)
maximum AC and DC output
sink current (single-ended)
note 3
note 2
ZL(diff)
differential load impedance
1.7
−
−
−
kΩ
αLIF
low IF band amplitude
characteristic
0 dB at middle of band
(standard independent)
−0.9
+0.9
dB
td(g)(LIF)
low IF band group delay ripple from 1 MHz to 2 MHz
from 2 MHz to end of band
−
−
150
100
−
ns
−
−
ns
αN−1
low-pass filter attenuation
6 MHz band; at 11.75 MHz
7 MHz band; at 13.75 MHz
8 MHz band; at 15.75 MHz
any band; at 27 MHz
15
15
15
40
−
dB
dB
dB
dB
−
−
−
−
α27MHz
low-pass filter attenuation
50
−
2004 Nov 02
8