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参数资料
| 型号： | TA8795BF |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP60 |
| 封装： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-60 |
| 文件页数： | 11/45页 |
| 文件大小： | 1139K |
| 代理商： | TA8795BF |
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TA8795BF
2001-01-15 19/45
AC Characteristics (Unless otherwise specified, VCC = 5V, Ta = 25°C)
Video Block
TEST CONDITIONS : VCC = 5V, Ta = 25±3°C
SW No. AND VR (VARIABLE RESISTOR) MODE
No.
PARAMETER
SYMBOL
UNIT
MIN
TYP.
MAX
SW1 SW3 SW51 SW54 SW60
CON-
TRAST
BRIGHT-
NESS
SHARP-
NESS
TEST METHOD
1. Adjust the bright VR so that the pin 44 DC voltage is
0.95V.
2. Measure the DC voltage V50 of pin 50.
3. Apply the DC voltage V50 to pin 50.
4. Change the DC voltage V58 of pin 58. Measure V58 at
10% and 90% of the voltage variation range of pin 44
and calculate the balance (Vdip).
V1
Second-order
differential input
dynamic range
Vdip
V
0.13
0.18
0.35
OFF OFF OFF
OFF
Center
Adjust
Center
V2 Minimum output
Vdo1
V
0.55
0.75
0.95
OFF OFF OFF
OFF
Center
Adjust
Center
1. To pin 2, input a signal with a video component
amplitude of 50mVp-p and a three-level chroma signal
with a sync amplitude of 143mVp-p.
2. Set the chroma amplitude of the three-level chroma
signal to the minimum and adjust the bright VR so that
the pin 44 pedestal is 0.95V.
3. Gradually amplify the chroma amplitude of the
three-level chroma signal. Measure the saturation
voltage when the lower side of the chroma amplitude in
the pin 44 output waveform is saturated.
V3 Maximum output
Vdo2
V
1.60
1.75
2.25
OFF OFF OFF
OFF
Center
Adjust
Center
1. To pin 2, input a signal with a video component
amplitude of 50mVp-p and a sine wave (f = 100kHz)
with a sync amplitude of 143mVp-p.
2. Adjust the bright VR so that the pin 44 pedestal is
0.95V.
3. Gradually increase the video component amplitude.
Measure the saturation voltage when the upper side of
the video component amplitude in the pin 44 output
waveform is saturated.
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