TDA9889TS PHILIPS [NXP Semiconductors], TDA9889TS Datasheet - Page 14

• Manufacturer Part Number: TDA9889TS
• Description: DVB selective AGC amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2004 Nov 02
handbook, halfpage
handbook, halfpage
(dBc/Hz)
DVB selective AGC amplifier
V TAGC
(1) IF AGC voltage.
(2) I
Fig.5
C/N
(V)
Fig.3 Typical IF and tuner AGC characteristic.
120
110
100
tuner
90
80
3
2
1
0
40
30
; R
Typical C/N ratio as a function of IF input
voltage.
TOP
= 22 k .
60
(1)
50
(3) I
(4) I
80
70
tuner
tuner
(2)
; R
; R
TOP
TOP
V i(IF)(rms) (dB V)
V i(IF)(p-p) (dB V)
(3)
100
= 8.2 k .
= 0 .
90
(4)
MHC095
MHC097
120
110
I TAGC
600
500
400
300
200
100
0
( A)
14
handbook, halfpage
handbook, halfpage
handbook, halfpage
V i(IF)(rms)
(dB V)
Fig.4
31.0
input conditions
f osc
31.0 32.31
f osc
120
100
90
80
70
60
input conditions
0
Fig.6 Intermodulation and harmonics.
Typical tuner takeover point as a function of
R
(MHz)
TOP
f IF
4
.
TDA9888TS; TDA9889TS
35.7
0
36.3
Intermodulation
8
1.31
Harmonics
74 dB V
(MHz)
f IF
2.62 3.93 5.24 6.55 7.86 9.17
12
output signal
4.1 4.7 5.3 5.9
16
Product specification
output signal
R TOP (k )
20
MHC096
1 V (p-p)
24
MHC098
MHC105
(MHz)
f LIF
(MHz)
f LIF