TEMIC TDA4454

TDA4454
TELEFUNKEN Semiconductors
Multistandard VIF Amplifier and PLL Demodulator
Application
Monolithic integrated circuit for vision IF signal processing in multistandard TV and VTR sets.
Description
This multistandard video IF processing circuit with PLL
picture carrier regeneration gives a high performance of
linear video demodulation.
The IF signal is internally fed via a 3-stage controlled
wideband amplifier to the video demodulator and the
phase detector. The phase detector compares the phase of
IF signal (0°) with the output signal of the VCO (90°) and
sets the VCO frequency accordingly. A lock detector
switches the PLL loop filter according to the state of the
PLL (locked-PLL slow, unlocked-PLL fast).
A second output of the VCO (0°) provides the reference
carrier for the video demodulator. The polarity of the
demodulator can be inverted by the standard switch
(Pin 10), so that negative or positive modulated IF signals
are always available with the same polarity at the demodulator output. The demodulated video signal is filtered,
amplified and fed via an interference limiter to the video
output (Pin 6).
The standard switch also determines the clamp level of
the video amplifier and the required IF-AGC mode. In the
standard B/G mode the sync peak value is the criterion for
a fast charge and discharge. In the standard L mode on the
other hand, fast AGC action is achieved by charging at
peak white level and discharging by the averaged video
signal (time constant on Pin 7). The response level for discharge has a hysteresis. In the D2MAC mode a similar
function is applied to achieve the AGC, but with different
threshold levels.
An overload detector prevents the PLL becoming
unlocked by large IF input signals.
To achieve a delayed tuner-AGC action, the current
output (Pin 3) can be adjusted with a resistor at Pin 2.
Features
D Suitable for standard B/G, L and D2MAC, processes
negative and positive modulated IF-signals with equal
polarity of the output signal
D High performance video demodulator with PLL
picture carrier regeneration
D Extended video bandwidth (12 MHz) for the demodulation of amplitude modulated MAC-signals
D Standard B/G: AGC acting on the sync peak pulse
D Standard L: fast AGC acting on peak white level with
average value controlled capacitor discharge and
reference hysteresis
D D2MAC: fast AGC acting on peak level with
controlled capacitor discharge
D Output for delayed tuner-AGC, take over point
adjustable
D High input sensitivity
D Ultra white and ultra black limiting
D Supply voltage range 6.8 to 13 V
D Low power consumption
D ESD protection
Package Options
Case: 16-pin DIL plastic
Rev. A1: 04.05.1995
Preliminary Information
1 (11)
TDA4454
TELEFUNKEN Semiconductors
Block Diagram
11
12
Lock
detector
93 7633
VCO Tank
Loop filter
8
Video
9
10 Standard switch
B/G
L
D2MAC
VCO
16
=
+
RO
9°
IF input
0°
1
Interference
rejection
Overload
detector
B/G
D2MAC
+/ –
4
Tuner AGC
14
+ VS
L
2
6
Video
output
4
5
15
IF AGC
7
13 Int. Ref
Average
( only L, D2MAC )
Tuner AGC
take over
Pin Description
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Pin
1, 16
2
3
4, 15
5
6
7
2 (11)
Symbol
Function
IF input
Tuner AGC adjustment
(turn over point)
Delayed tuner AGC current
Ground
IF AGC time constant
Video output
Video averaging for standard L
and D2MAC
Pin
8, 9
10
11
12
13
14
Symbol
Preliminary Information
Function
VCO circuit
Standard switch
PLL loop filter
PLL time constant switch
Reference voltage
Supply voltage
Rev. A1: 04.05.1995
TDA4454
TELEFUNKEN Semiconductors
Absolute Maximum Ratings
Reference point Pin 4, unless otherwise specified
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Thermal Resistance
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Parameters
Supply voltage
Pin 14
Supply current
Pin 14
Output current
Pin 6
Maximum power dissipation
Junction temperature
Ambient temperature during operation
Storage temperature
Symbol
Vs
IS
Iout
P
Tj
Tamb
Tstg
Value
6.8 to 13.0
55
5.0
720
+125
–25 to +85
–25 to +125
Unit
V
mA
mA
mW
°C
°C
°C
Parameters
Junction ambient (when soldered to PCB)
Symbol
RthJA
Value
60
Unit
K/W
External Voltage
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Pin
1–16
2
3
5
6
7
8–9
10
11
12
13
14
*)
Voltage Range *)
0 Vpin min (Vs, 8 V)
0 Vpin Vs
0 Vpin min (Vs, 10 V)
0 Vpin min (Vs, 10 V)
0 Vpin 6 V
0 Vpin min (Vs, 8 V)
0 Vpin Vs
0 Vpin Vs
0 Vpin min (Vs, 7.5 V)
0 Vpin Vs
0 Vpin Vs
6.8 V Vpin Vs
min (Vs, xV): the lesser of the two values is the lower limit.
Rev. A1: 04.05.1995
Preliminary Information
3 (11)
TDA4454
TELEFUNKEN Semiconductors
Electrical Characteristics
Vs = 8 V, Tamb = 25°C, reference point Pin 4, unless otherwise specified
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Parameters
DC-supply
Supply voltage
Supply current
IF-amplifier
Input sensitivity
Input impedance
Input capacitance
IF-AGC
IF gain control range
Response time, standard L
AGC capacitor
Average capacitor
Tuner-AGC
Available tuner-AGC
current
Automatic turn over point
PLL
PLL capture range
VCO-tuning range
VCO-tuning sensitivity
Video demodulator output
Composite video output
signal – standard B/G
Video output signal
standard L
Difference of the video
signals
Ultra white level,
standard B/G
Ultra black level, stand. L
Supply voltage influence
on the ultra black level
(B/G)
Supply voltage influence
on the ultra black level (L)
Video bandwidth (–3 dB)
Video frequency response
over the AGC range
Differential gain error
Differential phase error
Video demodulator output
Sound chroma beat
(1.07 MHz intermodulation) related to demodulated auxiliary colour
carrier)
4 (11)
Test Conditions / Pins
Pin 14
Pins 1–16
Sync peak value, B/G
Symbol
Min.
Typ.
Max.
Unit
Vs
Is
6.8
8.0
45
13.0
55
V
mA
80
1.2
2
120
µVeff
k
pF
Vin
Rin
Cin
Pins 5 and 7
Gv
tAGC
C5
C7
See note 1
60
66
4,7
68
dB
µsec
µF
nF
4
mA
65
dB
±1.5
3.0
4.5
MHz
MHz
kHz/mV
10
Pins 2 and 3
I3
Pins 8–9, 11, 12
Pin 6
Note 4
Note 5
Gv,tun
see note 2
fcap
fvco
f/ u
3.0
see note 3
Vout
1.8
Vout
1.2
2.0
2.2
Vpp
1.4
1.6
Vpp
10
%
Standard B/G and L
Vout
Zero carrier level
V6
4.2
V
Zero carrier level
V6
V/V
1.9
0.5
V
%/V
V/V
0.5
%/V
B
B
12
2.0
G
Pin 6
Picture carrier = 0 dB
Colour carrier = –6 dB
Sound carrier = –24 dB
aIM
3
3
52
Preliminary Information
MHz
dB
%
deg
dB
Rev. A1: 04.05.1995
TDA4454
TELEFUNKEN Semiconductors
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Parameters
IF residual voltage
f = 38.9 MHz
f = 77.8 MHz
Upsetting factor of sync
pulse in the AGC range
Tilt of half picture
between black and white
Ultra black limiting
threshold
Ultra white limiting
threshold
Standard switch
Control voltage B/G
Control voltage L
Control voltage D2MAC
Test Conditions / Pins
Min.
Vres1
Vres2
Vsync
Vsync
Typ.
Max.
2
5
3
Standard L
5
Unit
mV
mV
%
10
%
Below sync level
Vlim1
250
mV
Above ultra white level
Vlim2
500
mV
Pin 10
Note 6
Vsw1
Vsw2
Vsw3
2.5
0
5.0
4.0
1.5
Vs
V
V
V
Alignment of the VCO
Notes
1. A peak white value for at least 10 µs must be
transmitted for each complete frame
2. Loop filter: R1 = 500 W – 1 k, C1 = 0.47 µF
Capacitor VCO circuit: CVCO = 27 – 47 pF
3. Pin 6 unloaded
4. Residual carrier: 10% carrier amplitude
5. Blanking level: 30% carrier amplitude
6. Without control voltage at Pin 10 – standard B/G is
automatically selected
Rev. A1: 04.05.1995
Symbol
1. Apply 4.5 V to Pin 5, to disable the broadband
amplifier.
2. Measure the dc-voltage at Pin 11 (phase detector).
3. Apply a 38.9 MHz unmodulated carrier signal to the
IF input (Pins 1–16); adjust the input level so that the
AGC voltage at Pin 5 is between 2.0 V and 2.5 V.
4. Adjust the VCO circuit until at Pin 11 is the same
dc-voltage as measured in step 2.
Preliminary Information
5 (11)
TDA4454
TELEFUNKEN Semiconductors
Pin Related Internal Circuits
1
1.2 kW
1.2 kW
16
3 kW
50 W
3 kW
93 7634
93 7637
5
Figure 1. Pin 1 – 16
Figure 4. Pin 5
93 7635
6
3 kW
2
2 kW
93 7638
Figure 2. Pin 2
Figure 5. Pin 6
93 7636
3
7
7 kW
93 7639
Figure 3. Pin 3
Figure 6. Pin 7
6 (11)
Preliminary Information
Rev. A1: 04.05.1995
TDA4454
TELEFUNKEN Semiconductors
Pin Related Internal Circuits (Continued)
8
12
9
93 7643
93 7640
Figure 7. Pin 8 – 9
Figure 10. Pin 12
12.5 kW
12.5 kW
13
300 W
10
93 7641
Figure 8. Pin 10
12 kW
1 kW
12 kW
93 7644
2.7 V
Figure 11. Pin 13
11
93 7642
Figure 9. Pin 11
Rev. A1: 04.05.1995
Preliminary Information
7 (11)
TDA4454
TELEFUNKEN Semiconductors
IF-AGC, Switching Thresholds
93 7645
4.2 V Ultra white level: zero carrier
4.0 V White level: 10 % carrier
2.0 V Sync. peak level: 100% carrier
(charge / discharge threshold)
Figure 12. B/G-standard (neg. modulated)
93 7646
4.0 V Peak level: 100 % carrier
(charge threshold)
[ 2.4 V
Average discharge threshold
2.0 V Sync. peak level :
v 6 % carrier
1.9 V Ultra black level: zero carrier
Figure 13. L-standard (pos. modulated)
[ 4.1 V Average discharge threshold
93 7647
Dig.:
Sound
+Sync.
Analog:
Chrominance
Diff.: Signal
4.2 V
DC value: zero carrier
4.0 V
White level: 10 % carrier
2.0 V
Black level: 100 % carrier
(charge threshold)
Analog:
Luminance Signal
Figure 14. D2MAC-standard (neg. modulated)
8 (11)
Preliminary Information
Rev. A1: 04.05.1995
TDA4454
TELEFUNKEN Semiconductors
Test Circuit
Standard switch
+VS
22 mH
1 kW
R1
10 mF
4.7 mF
10 mF
1:2
IF
input
15
16
10 mF
C1
38.9 MHz
470 nF
14
13
200 kW
12
10
11
9
CVCO
TDA 4454
LVCO
10 nF
1
3
2
4
8
7
4.7 mF
10 kW
Tuner AGC
take over
6
5
68 nF
IF AGC
Tuner AGC
Video
93 7648
Application Circuit
VS +12 V
10 mF
22 mH
Standard switch
22 mH
10 nF
IF
50 W
SAW filter
3
15
14
13
12
11
10
9
7
2
4.7 nF
16
38.9 MHz
470 nF
10 nF
8
1
1 kW
10 mF
U 4744
B
CVCO
TDA 4454
LVCO
6
10 nF
1
2
3
4
6
5
5
4
SAW driver
93 7649
Rev. A1: 04.05.1995
10 nF
Tuner AGC
take over
10 kW
4.7 mF
Tuner AGC IF AGC
Preliminary Information
470 W
7
8
68 nF
Video
9 (11)
TDA4454
TELEFUNKEN Semiconductors
Dimensions in mm
Package: DIP 16
94 9128
10 (11)
Preliminary Information
Rev. A1: 04.05.1995
TELEFUNKEN Semiconductors
TDA4454
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances ( ODSs).
The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency ( EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
Rev. A1: 04.05.1995
Preliminary Information
11 (11)