INFINEON TDA6050-5

Video IF with FPLL,
MAC State
TDA 6050-5
Bipolar IC
Features
● Active multistandard video IF
with FPLL demodulator
● 12-MHz bandwidth
● MAC state
P-DIP-20
Type
Ordering Code
Package
TDA 6050-5
Q67000-A5123
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
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
+ VS supply voltage
18
Ground
19
IF input 2a
20
IF input 2b
Semiconductor Group
64
TDA 6050-5
Block Diagram
Semiconductor Group
65
TDA 6050-5
Absolute Maximum Ratings
TA = 0 to 70 ˚C
Parameter
Symbol
Supply voltage
V17
Junction temperature
Tj
Storage temperature
Tstg
Thermal resistance
(system-air)
Rth SA
Limit Values
Unit
min.
max.
0
13.2
V
150
˚C
125
˚C
60
K/W
– 40
Operating Range
Supply voltage
V17
10.8
13.2
V
Supply voltage delayed tuner AGC
V5
0.8
12
V
IF-frequency range
fIF
12
80
MHz
Ambient temperature during operation
TA
– 10
85
˚C
Semiconductor Group
66
TDA 6050-5
DC Characteristics
TA = 0 to 85 ˚C; VS = 12 V
Parameter
Symbol
Limit Values
min.
typ.
Unit
Test Condition
max.
Total current
consumption
– I17
IF input
V1, V2,
V19, V20
5.7
6.0
6.3
V
IF switch
H or open = IF 1
L = IF 2
± I3
120
2.0
0.0
210
260
5.0
1.0
µA
V
V
V3 = 0 V, 5 V
Standard switch
± I8
± I16
V8, V16
V8, V16
120
210
260
µA
V8, V16 = 0 V, 5 V
5
1
V
V
H level
L level
V3
V3
51
mA
2
0
V8 = H V16 = H
V8 = L V16 = H
V8 = H V16 = L
B/G standard
L standard
MAC standard
AGC Voltage
Min. AGC
Max. AGC
V6
V6
0.0
0.1
2.8
0.5
4.0
V
V
V1-2, V19-20 = 0 Vrms
V1-2, V19-20 = 150 mVrms
1.9
23
140
mA
µA
V6 = 2.0 V, V15 ≤ 3.2 V
V6 = 2.0 V, V15 ≥ 4.2 V
mA
µA
µA
V6 = 2.0 V, V15 ≥ 7.0 V
V6 = 2.0 V, 5.2 V < V15 < 6.5 V
V6 = 2.0 V, V15 < 3.9 V
V
V
V1-2, V19-20 = 10 mVrms
V1-2, V19-20 = 0 Vrms
AGC-Time Constant with Neg. Modulation
Charge current
Discharge current
Charge/discharge
ratio
I6
– I6
∆I6
1.1
13
55
1.4
18
82
AGC-Time Constant with Pos. Modulation
Charge current
Discharge current
Discharge current
(Average control)
Charge/discharge
ratio
I6
– I6
– I6
1.1
0.15
70
1.4
0.25
85
1.9
0.35
120
∆I6
4000
5600
9000
Mean Value Generation with Pos. Modulation
White level
Zero carrier level
Semiconductor Group
V7
V7
4.9
3.3
5.7
3.7
6.5
4.1
67
TDA 6050-5
DC-Characteristics (cont’d)
Parameter
Symbol
Unit
Test Condition
min.
typ.
max.
I5
V6
V6
4.4
650
2.8
0.3
4.7
850
3.1
0.4
5.0
1050
3.4
0.5
V
µA
V
V
R5-18 → ∞
V5 = 0
R5-18 = 10 kΩ
R5-18 = 10 Ω
– I4
10
18
30
mA
– I4
0
10
µA
V4 = 0.5 V17, V5 = 0.75 V
V1-2, V19-20 = 100 mVrms
V4 = 0.5 V17, V5 = 4 V
V1-2, V19-20 = 10 mVrms
3
3.8
4.1
V
V
2.5
3.3
mA
Tuner AGC threshold V5
Tuner AGC current
max. 1 ms
Limit Values
FPLL
VCO-tank circuit
Loop reference
V10, V11
V14
3.4
Video Output Negative Modulation
Output current
– I15
1.9
Sync pulse level
I15
V15
4.0
3.3
3.7
4.1
mA
V
Zero carrier level
V15
6.3
7.0
7.7
V
V15 = 5.0 V, V1-2, V19-20 =
10 mVrms, no modulation to
ground via R = 500 Ω
V1-2, V19-20 = 10 mVrms,
no modulation
V6 = 3 V,
V1-2, V19-20 = 0 Vrms
Video Output Positive Modulation (L standard)
White level
Zero carrier level
Semiconductor Group
V15
V15
6.0
3.3
6.7
3.7
7.4
4.1
68
V
V1-2, V19-20 = 10 mVrms,
V
no modulation
V6 = 3 V,
V1-2, V19-20 = 0 Vrms
TDA 6050-5
AC Characteristics
TA = 0 to 85 ˚C; VS = 12 V
Parameter
Symbol
Limit Values
min. typ.
Unit
Test Condition
max.
µVrms
Min. IF-input voltage
(min. AGC)
Max. IF-input voltage
(max. AGC)
V1-2, V19-20
45
V1-2, V19-20 90
100
mVrms
IF-control range
∆V
63
70
dB
Video output
V15
2.7
3.0
3.3
Vpp
V1-2, V19-20 = 10 mVrms
R15-18 = 1.5 kΩ
Changes via control
range
Changes via supply
voltage range
∆V15
3
6
%
Control range = 55 dB
∆V15
2
4
%
10.8 V < V17 < 13.2 V
Semiconductor Group
69
60
TDA 6050-5
AC Characteristics (cont’d)
Parameter
Symbol
Limit Values
min.
typ.
max.
Unit
Test Condition
Design Notes
IF-input resistance
symmetrical
R1-2, R19-20 1.5
2
2.5
kΩ
IF-input capacitance
symmetrical
C1-2, C19-20
2
5
pF
VCO voltage
V10-11
700
Video output resistance
R 15
70
Video noise voltage ratio
S/N
60
Video bandwidth
B – 3 dB
Differential gain
Differential phase
DG
DP
mVpp
125
Ω
dB
12
CCIR Rec 567-1
MHz
5
2.5
o
V1-2, V19-20 = 10 mVrms
V1-2, V19-20 = 10 mVrms
%
a IM
Intermodulation ratio
f IM = 1.07 MHz = f TT – f FT
sound porch = – 20 dB
60
dB
V1-2, V19-20 = 10 mVrms
S/N
54
dB
V1-2, V19-20 = 10 mVrms,
Intercarrier noise
CCIR 468
FuBK, m = 100 %
sound porch = – 13 dB
Varactor diode
Varactor diode
Semiconductor Group
C 10, 11
C 10, 11
15
7
70
pF
pF
V13 = 2.5 V
V13 = 4.9 V
TDA 6050-5
Test Circuit
Semiconductor Group
71
TDA 6050-5
Application Circuit Video
Semiconductor Group
72