CXA2050S
Pin
No.
Symbol
Equivalent circuit
Description
Analog/digital (dual-purpose) RGB signal
inputs.
The input signals are input via capacitors.
When using analog input, input a 0.7Vp-p
signal (no sync, 100 IRE); when using
digital input, input a signal of at least
1.5Vp-p (Vth = 1.2V).
The display level is 78 IRE. When using
digital input, digital input is selected
regardless of the YS2 setting.
100µA
200
23
24
25
23 R2IN
24 G2IN
25 B2IN
30k
In addition, the VM output is turned off.
These pins are clamped to 5.7V at the
burst timing of the signal input to the
HSIN input (Pin 53).
26
SVCC2
Power supply for RGB block.
Sample-and-hold for R, G and B AKB.
Connect to GND via a capacitor.
When not using AKB (manual CUTOFF
mode), R, G and B cut-off voltage can be
controlled by applying a control voltage to
each pin. The control voltage is 4.5 ± 1V.
200
27
29
31
27 RSH
29 GSH
31 BSH
200
28 ROUT
30 GOUT
32 BOUT
R, G and B signal outputs.
2.5Vp-p is output during 100% white
input.
28
30
32
12k
1.1mA
Input the signal converted from the CRT
beam current (cathode current Ik) to a
voltage via a capacitor. The V blanking
part is clamped to 2.7V at the V retrace
timing.
1k
The input for this pin is the reference
pulse return, and the loop operates so
that the Rch is 1Vp-p and the G and Bch
are 0.81Vp-p. The G and Bch can be
varied by ±0.5V by the bus CUTOFF
control. When not using AKB, this pin
should be open.
IKIN
33
33
50µA
– 7 –
SONY [ SONY CORPORATION ]
