參數(shù)資料
型號(hào)： TA8795BF
元件分類： 消費(fèi)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(yè)數(shù)： 31/45頁(yè)
文件大?。?/td> 1139K
代理商： TA8795BF
TA8795BF
2001-01-15 37/45
Sync Block
TEST CONDITIONS : VCC = 5V, Ta = 25±3°C
SW AND VR MODE
No.
PARAMETER
SYMBOL
UNIT
MIN
TYP.
MAX
SW10 SW12 SW13 SW47
TEST METHOD
D1
Horizontal
oscillation
frequency
fH
V
15.584 15.734 15.884
―
OFF
―
Measure the frequency of pin 6.
fHmax
16.384 16.484
―
D2
Horizontal
frequency variable
range
fHmin
kHz
―
14.984 15.084
―
ON
OFF
―
1. Connect a variable voltage supply VAFC to pin 12.
2. Vary the VAFC between 2 and 5V and measure the maximum and
minimum frequency of pin 6 during the variation.
D3
Horizontal
oscillation control
sensitivity
βH
Hz /
mV
7.0
10.0
13.0
―
ON
OFF
―
1. Connect a variable voltage supply VAFC to pin 12.
2. Measure the pin 6 frequency f (3V) when VAFC is 3V and
measure the pin 6 frequency f (4V) when VAFC is 4V.
3. βH = (f (4V) f (3V) / 1000) [Hz / mV]
D4
Horizontal
oscillation start
voltage
VON1
V
―
2.8
3.3
―
Do not connect a 5V
power supply (VCC).
1. To pin 14, connect a variable voltage supply VCC’.
2. Increase the VCC’ voltage and measure the pin 14 voltage when
pin 11 generates an oscillation waveform.
D5
Horizontal output
start voltage
VON2
V
―
2.8
3.3
―
Do not connect a 5V
power supply (VCC).
1. To pin 14, connect a variable voltage supply VCC’.
2. Increase the VCC’ voltage and measure the pin 14 voltage when
pin 6 has horizontal output.
D6
Horizontal output
pulse width
WH
s
4.7
5.0
5.3
1. To pin 13, input a 300mVp-p horizontal sync signal via a 1F
capacitor.
2. Observe the waveform on pin 6.
D7
Horizontal output
pulse delay
τH
s
0.30
0.45
0.65
ON
―
D8
Horizontal output
saturation level
VHS
V
―
0.2
0.4
―
1. Observe the pin 6 waveform and read the lowest voltage.
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