March 1991
2
Philips Semiconductors
Preliminary specification
Multistandard colour decoder, with negative
colour difference output signals
TDA4650
FEATURES
Identifies and demodulates PAL,
SECAM, NTSC 3.58 and NTSC 4.43
chrominance signals with:
Identification
automatic standard identification
by sequential inquiry
secure SECAM identification at
50 Hz only, with PAL priority
four switched outputs for
chrominance filter selection and
display control
external service switch for
oscillator adjustment
PAL / NTSC demodulation
H (burst) and V blanking
PAL switch (disabled for NTSC)
NTSC phase shift (disabled for
PAL)
PLL-controlled reference
oscillator
two reference oscillator crystals
on separate pins with automatic
switching
quadrature demodulator with
subcarrier reference
SECAM demodulation
limiter-amplifier
quadrature-demodulator with a
single external reference tuned
circuit
alternate line blanking, H and V
blanking
de-emphasis
Gain controlled chrominance
amplifier
ACC demodulation controlled by
system scanning
Internal colour-difference signal
output filters to remove the residual
subcarrier
GENERAL DESCRIPTION
The TDA4650 is a monolitic
integrated multistandard colour
decoder for PAL, SECAM and NTSC
(3.58 and 4.43 MHz) with negative
colour difference output signals. The
colour-difference output signals are
fed to the TDA4660/TDA4661,
Switched capacitor delay line.
QUICK REFERENCE DATA
ORDERING INFORMATION
Note
1. SOT117-1; 1996 November 28.
2. SOT261-2; 1996 November 28.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
p
supply voltage range (pin 13)
10.8
12.0
13.2
V
I
p
supply current
(pin 13)
-
60
-
mA
v
i(p-p)
chrominance input voltage (pin 15)
(peak-to-peak value)
20
100
400
mV
V
o(p-p)
colour-difference output voltage (pin 1)
(peak-to-peak value)
PAL/NTSC
0.42
0.525
0.66
V
colour-difference output voltage (pin 3)
(peak-to-peak value)
PAL/NTSC
0.53
0.665
0.84
V
colour-difference output voltage (pin 1)
(peak-to-peak value)
SECAM
0.83
1.05
1.32
V
colour-difference output voltage (pin 3)
(peak-to-peak value)
SECAM
1.06
1.33
1.67
V
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA4650
28
DIL
plastic
SOT117
(1)
TDA4650WP
28
PLCC
plastic
SOT261
(2)
March 1991
4
Philips Semiconductors
Preliminary specification
Multistandard colour decoder, with
negative colour difference output signals
TDA4650
PINNING
SYMBOL
PIN
DESCRIPTION
-
(R-Y)
o
1
-
(R-Y) output
-
(R-Y)
DE
2
(R-Y) de-emphasis
-
(B-Y)
o
3
-
(B-Y) output
-
(B-Y)
DE
4
(B-Y) de-emphasis
-
(B-Y)
CL
5
(B-Y) clamping
-
(R-Y)
CL
6
(R-Y) clamping
SEC
REF
7
SECAM reference tuned circuit
SEC
REF
8
SECAM reference tuned circuit
SEC
REF
9
SECAM reference tuned circuit
SEC
REF
10
SECAM reference tuned circuit
GND
11
ground
C
D
12
DC for demodulators
V
P
13
supply voltage
C
DC
14
DC feedback
CHR
I
15
chrominance input
C
ACC
16
automatic colour control
HUE
17
hue control
PLL
18
PLL time constant
OSC1
19
input for 7.15 MHz oscillator
C
PLL
20
PLL DC reference
OSC2
21
input for 8.86 MHz oscillator
N
IDENT
22
NTSC identification
P
IDENT
23
PAL/SECAM identification
SSC
24
super sandcastle pulse input
N
O1
25
NTSC (4.43 MHz) identification
N
O2
26
NTSC (3.58 MHz) identification
SEC
o
27
SECAM identification
PAL
o
28
PAL identification
SYMBOL
PIN
DESCRIPTION
PIN CONFIGURATIONS
Fig.2
Pin configuration for DIL
package
Fig.3 Pin configuration for PLCC package.
March 1991
5
Philips Semiconductors
Preliminary specification
Multistandard colour decoder, with
negative colour difference output signals
TDA4650
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134)
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
P
supply voltage (pin 13)
-
13.2
V
V
I
voltage range at pins 1, 3, 17 and 24 to 28
0
V
P
V
I
o
output current (pins 1 and 3)
-
-
5
mA
I
i/o
input/output current (pins 25 to 28)
-
-
5
A
T
stg
storage temperature range
-
25
+
150
C
T
amb
operating ambient temperature range
0
+
70
C
R
th j-a
from junction to ambient in free air:
SOT117
-
37
K/W
SOT261
-
70
K/W
P
tot
total power dissipation (SOT117)
-
1.4
W
total power dissipation (SOT261)
-
1.1
W
Fig.4 Internal circuits (continued in Fig.5)
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