Video IF with FPLL,
MAC State
TDA 6050-5
Bipolar IC
Features
q
Active multistandard video IF
with FPLL demodulator
q
12-MHz bandwidth
q
MAC state
P-DIP-20
Type
TDA 6050-5
Ordering Code
Q67000-A5123
Package
P-DIP-20
Circuit Description
The IF circuit consists of a four-stage capacitively coupled and symmetrically designed controlled
amplifier and a real synchronous demodulator with a FPLL-carrier regeneration. Two IF inputs can
be selected for applications with different SAWs. The main performance of the device is the very low
differential phase DP and gain DG combined with an excellent intermodulation ratio. The positive
video output is used to derive the IF and tuner control voltage. The AGC threshold is set by means
of a potentiometer. Dependent on the modulation polarity the video signal and the AGC are
switched over. MAC state can be selected by an additional signal.
Application
Multistandard TV/VTR and cable converters with mono or stereo applications.
Semiconductor Group
63
06.94
TDA 6050-5
DC Characteristics
T
A
= 0 to 85 ˚C;
V
S
= 12 V
Parameter
Total current
consumption
IF input
IF switch
H or open = IF 1
L = IF 2
Standard switch
H level
L level
B/G standard
L standard
MAC standard
AGC Voltage
Min. AGC
Max. AGC
Symbol
–
I
17
Limit Values
min.
typ.
51
5.7
120
2.0
0.0
120
2
0
6.0
210
6.3
260
5.0
1.0
260
5
1
max.
mA
V
µA
V
V
µA
V
V
Unit
Test Condition
V
1
,
V
2
,
V
19
,
V
20
±
I
3
V
3
= 0 V, 5 V
V
3
V
3
±
I
8
±
I
16
V
8
,
V
16
V
8
,
V
16
210
V
8
,
V
16
= 0 V, 5 V
V
8
= H
V
16
= H
V
8
= L
V
16
= H
V
8
= H
V
16
= L
V
6
V
6
0.0
0.1
2.8
0.5
4.0
V
V
V
1-2
,
V
19-20
= 0 Vrms
V
1-2
,
V
19-20
= 150 mVrms
AGC-Time Constant with Neg. Modulation
Charge current
Discharge current
Charge/discharge
ratio
I
6
–
I
6
∆
I
6
1.1
13
55
1.4
18
82
1.9
23
140
mA
µA
V
6
= 2.0 V,
V
15
≤
3.2 V
V
6
= 2.0 V,
V
15
≥
4.2 V
AGC-Time Constant with Pos. Modulation
Charge current
Discharge current
Discharge current
(Average control)
Charge/discharge
ratio
I
6
–
I
6
–
I
6
∆
I
6
1.1
0.15
70
4000
1.4
0.25
85
5600
1.9
0.35
120
9000
mA
µA
µA
V
6
= 2.0 V,
V
15
≥
7.0 V
V
6
= 2.0 V, 5.2 V <
V
15
< 6.5 V
V
6
= 2.0 V,
V
15
< 3.9 V
Mean Value Generation with Pos. Modulation
White level
Zero carrier level
V
7
V
7
4.9
3.3
5.7
3.7
6.5
4.1
V
V
V
1-2
,
V
19-20
= 10 mVrms
V
1-2
,
V
19-20
= 0 Vrms
Semiconductor Group
67
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