Type
Ordering Code
Package
TDA 6050-5
Q67000-A5123
P-DIP-20
Video IF with FPLL,
MAC State
Bipolar IC
TDA 6050-5
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
Features
q
Active multistandard video IF
with FPLL demodulator
q
12-MHz bandwidth
q
MAC state
Semiconductor Group
64
TDA 6050-5
Pin Functions
Pin No.
Function
1
IF input 1a
2
IF input 1b
3
IF switch
4
Tuner AGC output
5
Tuner AGC threshold
6
Main AGC-time constant
7
Mean value AGC-time constant
8
Positive/negative modulation switch
9
N.C.
10
FPLL-VCO (2
video carrier)
11
FPLL-VCO (2
video carrier)
12
N.C.
13
FPLL-loop filter
14
FPLL-loop reference
15
Video output
16
MAC-standard switch
17
+
V
S
supply voltage
18
Ground
19
IF input 2a
20
IF input 2b
Semiconductor Group
65
TDA 6050-5
Block Diagram
Semiconductor Group
66
TDA 6050-5
Absolute Maximum Ratings
T
A
= 0 to 70 C
Parameter
Symbol
Limit Values
Unit
min.
max.
Supply voltage
V
17
0
13.2
V
Junction temperature
T
j
150
C
Storage temperature
T
stg
40
125
C
Thermal resistance
(system-air)
R
th SA
60
K/W
Operating Range
Supply voltage
V
17
10.8
13.2
V
Supply voltage delayed tuner AGC
V
5
0.8
12
V
IF-frequency range
f
IF
12
80
MHz
Ambient temperature during operation
T
A
10
85
C
Semiconductor Group
67
TDA 6050-5
DC Characteristics
T
A
= 0 to 85 C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Total current
consumption
I
17
51
mA
IF input
V
1
,
V
2
,
V
19
,
V
20
5.7
6.0
6.3
V
IF switch
H or open = IF 1
L = IF 2
I
3
V
3
V
3
120
2.0
0.0
210
260
5.0
1.0
A
V
V
V
3
= 0 V, 5 V
Standard switch
H level
L level
B/G standard
L standard
MAC standard
I
8
I
16
V
8
,
V
16
V
8
,
V
16
120
2
0
210
260
5
1
A
V
V
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
AGC Voltage
Min. AGC
Max. AGC
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
A
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
A
A
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
68
TDA 6050-5
DC-Characteristics (cont'd)
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Tuner AGC threshold
V
5
I
5
V
6
V
6
4.4
650
2.8
0.3
4.7
850
3.1
0.4
5.0
1050
3.4
0.5
V
A
V
V
R
5-18
V
5
= 0
R
5-18
= 10 k
R
5-18
= 10
Tuner AGC current
max. 1 ms
I
4
I
4
10
0
18
30
10
mA
A
V
4
= 0.5
V
17
,
V
5
= 0.75 V
V
1-2
,
V
19-20
= 100 mVrms
V
4
= 0.5
V
17
,
V
5
= 4 V
V
1-2
,
V
19-20
= 10 mVrms
FPLL
VCO-tank circuit
Loop reference
V
10
, V
11
V
14
3.4
3
3.8
4.1
V
V
Video Output Negative Modulation
Output current
Sync pulse level
Zero carrier level
I
15
I
15
V
15
V
15
1.9
4.0
3.3
6.3
2.5
3.7
7.0
3.3
4.1
7.7
mA
mA
V
V
V
15
= 5.0 V,
V
1-2
,
V
19-20
=
10 mVrms, no modulation to
ground via
R
= 500
V
1-2
,
V
19-20
= 10 mVrms,
no modulation
V
6
= 3 V,
V
1-2
,
V
19-20
= 0 Vrms
Video Output Positive Modulation (L standard)
White level
Zero carrier level
V
15
V
15
6.0
3.3
6.7
3.7
7.4
4.1
V
V
V
1-2
,
V
19-20
= 10 mVrms,
no modulation
V
6
= 3 V,
V
1-2
,
V
19-20
= 0 Vrms
Semiconductor Group
69
TDA 6050-5
AC Characteristics
T
A
= 0 to 85 C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Min. IF-input voltage
(min. AGC)
Max. IF-input voltage
(max. AGC)
V
1-2
,
V
19-20
V
1-2
,
V
19-20
90
45
100
60
Vrms
mVrms
IF-control range
V
63
70
dB
Video output
V
15
2.7
3.0
3.3
Vpp
V
1-2
,
V
19-20
= 10 mVrms
R
15-18
= 1.5 k
Changes via control
range
Changes via supply
voltage range
V
15
V
15
3
2
6
4
%
%
Control range = 55 dB
10.8 V <
V
17
< 13.2 V
Semiconductor Group
70
TDA 6050-5
AC Characteristics (cont'd)
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Design Notes
IF-input resistance
symmetrical
R
1-2
,
R
19-20
1.5
2
2.5
k
IF-input capacitance
symmetrical
C
1-2
,
C
19-20
2
5
pF
VCO voltage
V
10-11
700
mVpp
Video output resistance
R
15
70
125
Video noise voltage ratio
S
/
N
60
dB
CCIR Rec 567-1
Video bandwidth
B
3 dB
12
MHz
Differential gain
Differential phase
DG
DP
5
2.5
%
o
V
1-2
,
V
19-20
= 10 mVrms
V
1-2
,
V
19-20
= 10 mVrms
Intermodulation ratio
f
IM
= 1.07 MHz =
f
TT
f
FT
sound porch = 20 dB
a
IM
60
dB
V
1-2
,
V
19-20
= 10 mVrms
Intercarrier noise
S
/
N
54
dB
V
1-2
,
V
19-20
= 10 mVrms,
CCIR 468
FuBK,
m
= 100 %
sound porch = 13 dB
Varactor diode
Varactor diode
C
10, 11
C
10, 11
15
7
pF
pF
V
13
= 2.5 V
V
13
= 4.9 V
Semiconductor Group
71
TDA 6050-5
Test Circuit
Semiconductor Group
72
TDA 6050-5
Application Circuit Video
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