FS3fast switching input
R/±(R−Y)IN4R or (R−Y) signal input
G/Y IN5G or Y signal input
B/±(B−Y)IN6B or (B−Y) signal input
VINT7internal voltage supply
SYNC18synchronization input for
ON9ON input
R/−(R−Y)IN10R or −(R−Y) signal input
G/Y IN11G or Y signal input
B/−(B−Y)IN12B or −(B−Y) signal input
SDA13serial data input/output; I
SCL14serial clock input; I
S015address selection input 0
S116address selection input 1
S217address selection input 2
V
P
18supply voltage
B/−(B−Y)OUT19B or −(B−Y) signal output
G/Y OUT20G or Y signal output
R/−(R−Y)OUT21R or −(R−Y) signal output
GND22ground
SYNC23synchronization output
CLAMP24clamping pulse generator
2
C-bus mode only)
(non-I
Channel 2
Channel 1
input/output
2
C-bus
2
C-bus
handbook, halfpage
R/ (R Y) IN
B/ (B Y) IN
R/ (R Y) IN
B/ (B Y) IN
1
SEL
FS
G/Y IN
2
3
4
5
6
SYNC2
TDA8443A
7
V INT
ON
G/Y IN
8
9
10
11
12
MLD004
SYNC1
Fig.2 Pin configuration.
TDA8443A
24
CLAMP
23
SYNC
22
GND
21
R/ (R Y) OUT
20
G/Y OUT
19
B/ (B Y) OUT
V
18
P
17
S2
16
S1
15
S0
14
SCL
13
SDA
1995 Mar 074
Page 5
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
FUNCTIONAL DESCRIPTION
The circuit contains two sets of inputs (see Fig.1). Both
channels can receive RGB or YUV signals. Each set of
inputs has its own synchronization input, which internally
generates a pulse to clamp the inputs. The internal
clamping pulse can also be controlled by a signal (e.g. a
sandcastle pulse) applied to pin 24. The pulse will occur
during the time that the signal at pin 24 is between
5.5 and 6.5 V. If both a sync signal and a pin 24 signal are
used the signal should be applied to pin 24 via a 1 kΩ
resistor.
RGB signals of Channel 2 can be matrixed to YUV signals.
The outputs can be set in a high impedance OFF state,
which allows the use of seven devices in parallel
2
C-bus mode).
(I
The circuit can be controlled by an I2C-bus compatible
microcontroller or directly by DC voltages. The fast
switching input can be operated via pin 16 of the
peritelevision connector.
TDA8443A
2
C-bus mode
I
The protocol for the devices in I2C-bus mode is shown
in Fig.3.
Table 1 Protocol bit description
BITDESCRIPTION
STAstart condition
MA2 to MA0address selection bits; see Table 2
ACKacknowledge bit
D7channel selection bit; see Table3
D6matrix selection bit; see Table3
D5 to D3gain control bits; see Table 4
D2fast switching priority bit; see Table5
D1 and D0output state control bits; see Table 6
STOstop condition
handbook, full pagewidth
See Table1.
STA 1101 MA2 MA1 MA00 ACK D7 D6D5 D4D3 D2D1 D0 ACK STO
If the circuit is switched on in the I2C-bus mode, all bits of D0 to D7 are set to zero.
2
Table 7 Non-I
PIN 13PIN 14PIN 1A1A4, A3, A2
C-bus mode (S2 = S1 = S0 = L)
CONTROL
MODE SWITCHED BY
FS (PIN 3)
GAIN SETTINGS
B1, B3B2
LLL2 or 01111
LLH2 or 01211
LHL2 or 111−10.45
LHH2 or 011−10.45
HLL2 or 02111
HLH2 or 02211
HHL2 or 121−10.45
HHH2 or 021−10.45
OFF
ON
Table 8 Fast switching input (pin 3)
FSMODE SELECTED
≤0.4 Vmode 2
1 to 3 V mode 0 or mode 1 as set by control
1995 Mar 077
Table 9 ON input (pin 9)
ONFUNCTION
LOFF; no output signal; high impedance
OFF-state
Hfunction is determined in Table 7
Page 8
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
TDA8443A
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOLPARAMETERMIN.MAX.UNIT
V
P
V
I(SDA)
V
I(SCL)
V
n
I
O(max)
T
amb
T
stg
T
j
supply voltage (pin 18)−14V
input voltage (pin 13)−0.314V
input voltage (pin 14)−0.314V
input voltage any other pin−0.3VP+ 0.3V
maximum output current−20mA
operating ambient temperature0+70°C
IC storage temperature range−55+125°C
maximum junction temperature−+125°C
CHARACTERISTICS
= 12 V; T
V
P
=25°C; unless otherwise specified.
amb
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supply
V
P
I
P
supply voltage (pin 18)10.812.013.2V
supply current−6590mA
1. Crosstalk is defined as the unwanted data transfer from an output, driven at nominal level, to other inputs and outputs
on the IC and is expressed as a ratio in dBs.
V
2. Signal-to-noise ratio =
20log
op p–()
---------------------- V
no rms()
B5 MHz=()
3. Supply voltage ripple rejection =
20log
V
----------------------------------------V
RR at the output()
RR supply()
1995 Mar 0710
Page 11
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
TDA8443A
TIMING CHARACTERISTICS
I2C-bus load conditions: 4 kΩ pull-up resistor to +5 V; 200 pF capacitor to GND;
all values are referenced to VIH= 3 V and VIL= 1.5 V; see Fig.4.
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.
t
BUF
t
SU;STA
t
HD;STA
t
LOW
t
HIGH
t
r
t
f
t
SU;DAT
t
HD;DAT
t
SU;ACK
t
HD;ACK
t
SU;STO
time bus must be free before start4.7−µs
set-up time for start condition4.7−µs
hold time for start condition4.0−µs
SCL and SDA LOW time4.7−µs
SCL HIGH time4.0−µs
SCL and SDA rise time−1.0µs
SCL and SDA fall time−0.3µs
data set-up time (write)250−ns
data hold time (write)note 11.0−µs
acknowledge set-up time−2µs
acknowledge hold time0−µs
set-up time for stop condition4.7−µs
Note
1. Timing t
deviates from the I2C-bus specification. After reset has been activated, a delay of 50 µs must occur
HD;DAT
before transmission may be resumed.
handbook, full pagewidth
SDA
(WRITE)
SCL
t
SU; STA
t
BUF
t
f
t
HD; DAT
t
HD; STA
t
r
t
LOW
Fig.4 I2C-bus timing diagram.
1995 Mar 0711
t
SU; DAT
t
SU; ACK
t
HIGH
t
HD; ACK
t
LOW
t
SU; STO
MLD005
Page 12
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
handbook, full pagewidth
fast switching
input signal
output signal
(YUV)
50 %
10 %
TDA8443A
switching
delay
90 %
MLD006
switching time
Fig.5 Fast switching signal diagram.
1995 Mar 0712
Page 13
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
APPLICATION INFORMATION
Table 10 Channel input/output information
INPUT 1INPUT 2OUTPUTMODED5D4D3
Y = 0.34 V
U=−1.33 VU = −1.33 V
V=−1.05 VV = −1.05 V
S = 0.3 VS = 0.6 V
−
Y = 0.34 V
U=−1.33 VU = −2.66 V
V=−1.05 VV = −2.10 V
S = 0.3 VS = 0.6 V
−
Y = 0.34 V
U=−1.33 VU = −1.33 V
V=−1.05 VV = −1.05 V
S = 0.3 VS = 0.6 V
−
Y = 0.34 V
U=−1.33 VU = −2.66 V
V=−1.05 VV = −2.10 V
S = 0.3 VS = 0.6 V
−
−
R = 0.75 VY = 0.34 V
G = 0.75 VU = −1.33 V
B = 0.75 VV = −1.05 V
S = 0.3 VS = 0.6 V
−
R = 0.75 VY = 0.68 V
G = 0.75 VU = −2.66 V
B = 0.75 VV = −2.10 V
S = 0.3 VS = 0.6 V
−
Y = 0.34 VY = 0.34 V
U=−1.33 VU = −1.33 V
V=−1.05 VV = −1.05 V
S = 0.3 VS = 0.6 V
−
Y = 0.34 VY = 0.68 V
U=−1.33 VU = −2.66 V
V=−1.05 VV = −2.10 V
S = 0.3 VS = 0.6 V
Y = 0.34 V
2111
1111
Y = 0.68 V
2100
1100
Y = 0.34 V
2101
0101
Y = 0.68 V
2110
0110
TDA8443A
1995 Mar 0713
Page 14
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
handbook, full pagewidth
SDA
13
47
nF
SCL
14
47
nF
(R Y)Y(B Y)
channel 1
(colour decoder)
S0
15
S1
16
47
nF
ONSYNC1internal
S2
17
4.7
µF
V
P
TDA8443A
voltage
outputsoutputs
(R Y)
(B Y)
1918
22
nF
Y
47
nF
channel 2
21
47
nF
17
15
20
47
nF
BGRFSSYNC2
7911 13
8 101214161820
(peritelevision connector)
GND
22
19
SYNC
23
TDA8443A
CLAMP
1 nF
24
123456789101112
4.7
µF
SEL
MLD007
V
P
4.7
kΩ
Fig.6 Application diagram (example).
1995 Mar 0714
Page 15
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
Input clamps
The R, G, B respectively (R−Y), Y and (B−Y) video signals
are AC-coupled to the IC where they are clamped on the
black level. The timing information for this clamping action
is derived from the associated synchronization signal
SYNC, which could also consist of the composite video
information signal CVBS. The syncsignal is AC-coupled to
the IC where it is clamped on top-sync level, information
obtained from this action is used to generate the clamp
pulses.
The clamp pulses can be generated in two ways:
1. Using the sync information (internal clamping)
The sync information is clamped on top-sync and the
information obtained from this action is used to switch
an internal current source at pin 24.
Pin 24 should be connected to V
and a 1 nF capacitor to ground. During video scan the
voltage at pin 24 will be HIGH (equals positive supply
voltage). During the synchronization pulses the
voltage at pin 24 will drop to zero because of the
current sink (2.5 mA).
via a 4.7 kΩ resistor,
P
TDA8443A
When the synchronization pulse is over, the current
source is switched off and the voltage at pin 24 will rise
to its higher level. Because of the time constant at
pin 24, the restoration will take some microseconds.
The voltage at pin 24 is also sensed internally and at
the time it is between 0.456V
pulse is generated and used for the clamping action.
2. Using a sandcastle pulse (external clamping)
If an associated sandcastle pulse is available, it can
also be used as a clamping pulse. In this event the
sandcastle pulse should be connected to pin 24, the
top of the clamping pulse should be between 0.544V
and 0.456VP. The timing of the internal clamping pulse
will be equal to the timing of the higher part of the
sandcastle pulse. If the sync signal is also connected,
the current sink will also become active during the
synchronization pulses. This means that the
sandcastle pulse should be connected to pin 24 via a
1kΩ dropping resistor. In this event only the
sandcastle pulse at pin 24 will be influenced during
sync pulses, but the sandcastle pulse at the
sandcastle source will be unchanged.
and 0.544VP, a time
P
P
9.4 kΩ
1.8 kΩ
9.4 kΩ
MEA623
V
P
V1
V2
ON when current sync = 2.5 mA
OFF when current sync = 0 mA
handbook, halfpage
pin 24
Tolerance on V1 and V2 is given by ∆R/R and ∆VP/VP. The diffusion process gives ∆R/R(max) =1.5%.
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
A
A
UNIT
inches
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
max.
mm
OUTLINE
VERSION
SOT101-1
12
min.
max.
1.7
1.3
0.066
0.051
IEC JEDEC EIAJ
051G02MO-015AD
b
b
1
0.53
0.38
0.021
0.015
0.32
0.23
0.013
0.009
REFERENCES
cD E eM
32.0
31.4
1.26
1.24
12
scale
14.1
13.7
0.56
0.54
E
(1)(1)
L
3.9
3.4
EUROPEAN
PROJECTION
M
15.80
15.24
0.62
0.60
w
H
E
17.15
15.90
0.68
0.63
0.252.5415.24
0.010.100.60
ISSUE DATE
92-11-17
95-01-23
e
1
0.15
0.13
Z
max.
2.25.10.514.0
0.0870.200.0200.16
(1)
1995 Mar 0716
Page 17
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
SOLDERING
Plastic dual in-line packages
Y DIP OR WAVE
B
The maximum permissible temperature of the solder is
260 °C; this temperature must not be in contact with the
joint for more than 5 s. The total contact time of successive
solder waves must not exceed 5 s.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified storage maximum. If the printed-circuit board has
been pre-heated, forced cooling may be necessary
immediately after soldering to keep the temperature within
the permissible limit.
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
R
EPAIRING SOLDERED JOINTS
Apply a low voltage soldering iron below the seating plane
(or not more than 2 mm above it). If its temperature is
below 300 °C, it must not be in contact for more than 10 s;
if between 300 and 400 °C, for not more than 5 s.
TDA8443A
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1995 Mar 0717
Page 18
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
TDA8443A
NOTES
1995 Mar 0718
Page 19
Philips SemiconductorsProduct specification
I2C-bus controlled YUV/RGB switch
TDA8443A
NOTES
1995 Mar 0719
Page 20
Philips Semiconductors – a worldwide company
Argentina: IEROD, Av. Juramento 1992 - 14.b, (1428)
BUENOS AIRES, Tel. (541)786 7633, Fax. (541)786 9367
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
Tel. (02)805 4455, Fax. (02)805 4466
Austria: Triester Str. 64, A-1101 WIEN, P.O. Box 213,
Tel. (01)60 101-1236, Fax. (01)60 101-1211
Belgium: Postbus 90050, 5600 PB EINDHOVEN, The Netherlands,
All rights are reserved. Reproduction in whole or in part is prohibited without the
prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation
or contract, is believed to be accurate and reliable and may be changed without
notice. No liability will be accepted by the publisher for any consequence of its
use. Publication thereof does not convey nor imply any license under patent- or
other industrial or intellectual property rights.
Printed in The Netherlands
533061/1500/02/pp20Date of release: 1995 Mar 07
Document order number:9397 750 00021
Philips Semiconductors
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.