1995 Mar 07 2
Philips Semiconductors Product specification
I
2
C-bus controlled YUV/RGB switch
TDA8443A
FEATURES
• Two RGB/YUV selectable clamped inputs with
associated synchronization
• RGB/YUV matrix
• 3-state switching with an OFF-state
• Selectable gain
• I
2
C-bus or non-I
2
C-bus mode
• Address selection for 7 devices
• Fast switching.
GENERAL DESCRIPTION
The TDA8443A is a general purpose two-channel switch
for YUV or RGB signals. One channel provides matrixing
from RGB to YUV, which can be bypassed.
The IC is controlled via I
2
C-bus by seven different
addresses or can be used in a non-I
2
C-bus mode. In the
non-I
2
C-bus mode, control of the circuit is achieved by DC
voltages.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage (pin 18) 10.8 12.0 13.2 V
I
P
supply current − 65 90 mA
RGB/YUV channels
Z
19-22
output impedance (pin 19) − 730Ω
Z
20-22
output impedance (pin 20) − 730Ω
Z
21-22
output impedance (pin 21) − 730Ω
B bandwidth −3 dB; mode 0 or 2 − 25 − MHz
+3 dB; mode 0 or 2 − 12 − MHz
±3 dB; mode 1 − 10 − MHz
V
O(p−p)
maximum output amplitude of YUV
signals (peak-to-peak value)
gain × 1 2.1 −−V
gain × 2 4.2 −−V
T
amb
operating ambient temperature 0 − +70 °C
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA8443A DIP24 plastic dual in-line package; 24 leads (600 mil) SOT101-1
