TA1204AF Datasheet, PDF (8/25 Pages) Toshiba Semiconductor – γ CORRECTION IC FOR LCD TV

PIN
No.
PIN NAME
35 B Clamp Fil.
37 G Clamp Fil.
41 R Clamp Fil.
FUNCTION
Connect B-axis γ input pedestal offset
cancel filter.
Use G-axis pedestal as reference.
Connect G-axis γ input pedestal offset
cancel filter.
Use brightness adjustment voltage as
reference.
Connect R-axis γ input pedestal offset
cancel filter.
Use G-axis pedestal as reference.
38 B In (B)
40 G In (B)
42 R In (B)
Input RGB (B) signal.
In Clamp mode, input via clamp
capacitor.
INTERFACE CIRCUIT
TA1204AF
INPUT / OUTPUT
SIGNAL
DC
100IRE = 0.7V_p-p
Clamp mode
GND pin for block to which power is
39 GND
supplied from V_CC pin.
Connect to 5 and 17 GND pins using
―
―
short thick line.
1 γ-R Cont
43 γ-B Cont
Fine-adjusts R / B-axis γ characteristic.
When left open, biased 3.7V.
When voltage is adjusted to 3.7V, γ
adjustment is typically 78% (at 60%
white input).
DC input
0 to 5V
γ adjustment :
66 to 78%
(at 60% white input)
44 γ-Com Cont
Adjusts common γ characteristic.
Batch-adjusts three axes.
When left open, biased 2.5V.
When voltage is adjusted to 2.5V, γ
adjustment is typically 72% (at 60%
white input).
DC input
0.9 to 4.9V
γ adjustment :
82 to 60%
(at white 60% input)
2001-02-07 8/25