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參數(shù)資料
| 型號： | TA8795BF |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP60 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-60 |
| 文件頁數(shù)： | 13/45頁 |
| 文件大小： | 1139K |
| 代理商： | TA8795BF |
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TA8795BF
2001-01-15 20/45
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
V4 AC gain
Gv1
% IRE
1.8
2.5
3.3
OFF OFF
ON
OFF
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. Measure the output amplitude reflected at pin 44 and
calculate the ratio of the amplitude to the input.
Gv1 = output amplitude / input amplitude (←50mVp-p)
V5
Frequency
characteristics
fs
MHz
2
3
―
OFF OFF OFF
OFF
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. Connect a 1.6V power supply to pin 51.
3. Measure the pin 44 output amplitude V44 (f =
100kHz).
4. Gradually increase the input frequency and measure
the frequency when the pin 44 output frequency
reaches 70% of V44 (f = 100kHz).
V6
Sharpness
Adjustment range
Gfps1
dB
10.0
14.0
―
OFF OFF
ON
OFF
Center
Adjust
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. Measure the pin 44 amplitude when the sharpness VR
is at minimum (V44min) and measure the pin 44
amplitude when the sharpness VR is at maximum
(V44max).Calculate the following equation using the
result of V44min and V44max.
Gfps1 = 20og (V44max / V44min) [dB]
V7
Sharpness
Adjustment gain
Gfps2
dB
6.0
10.0
―
OFF OFF
ON
OFF
Center
Adjust
Maximum
1. To pin 2, input a signal with a video component
amplitude of 50mVp-p and a sine wave (f = 2.4MHz)
with a sync amplitude of 143mVp-p.
2. Adjust the bright VR so that the pin 44 pedestal is
0.95V.
3. Measure the pin 44 amplitude V44 (2.4MHz) and V44
(100k) when a frequency of f = 2.4MHz and 100kHz
are input respectively. Calculate the following equation
using the result of V44 (2.4MHz) and V44 (100kHz).
Gfps2 = 20og (V44 (2.4MHz) / V44 (100k) ) [dB]
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