- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30725 > LA76818A (SANYO SEMICONDUCTOR CO LTD) AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP54 PDF資料下載
參數(shù)資料
| 型號(hào)： | LA76818A |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP54 |
| 封裝： | 0.600 INCH, DIP-54 |
| 文件頁(yè)數(shù)： | 2/44頁(yè) |
| 文件大小： | 289K |
| 代理商： | LA76818A |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)
LA76818A
No.8047-10/44
5. Before measurement, adjust the DAC as follows.
Parameter
Test point
Input signal
Adjustment
Video
Level DAC
46
SG6, 80dB
Set the output level at pin 46 as close to 2.0Vp-p as possible.
VIF Block Test Conditions
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
Maximum RF AGC
voltage
VRFH
4
SG1
80dB
Measure the DC voltage at pin 4.
RF.AGC = "000000"
Minimum RF AGC
voltage
VRFL
4
SG1
80dB
Measure the DC voltage at pin 4.
RF.AGC = "111111"
(@DAC =
0)
RFAGC0
4
Obtain the input level at which the DC voltage at
pin 4 becomes 4.5V.
RF.AGC = "000000"
RF AGC
Delay Pt
(@DAC =
63)
RFAGC63
SG1
Obtain the input level at which the DC voltage at
pin 4 becomes 4.5V.
RF.AGC = "111111"
Input sensitivity
Vi
46
SG6
Using an oscilloscope, observe the level at pin 46
and obtain the input level at which the waveform's
p-p value becomes 1.4Vp-p.
No-signal
video output voltage
VOn
46
No signal
Set IF AGC = “1” and measure the DC voltage at
pin 46.
Sync signal tip level
VOtip
46
SG1
80dB
Measure the DC voltage at pin 46.
Video output
amplitude
VO
46
SG6
80dB
Using an oscilloscope, observe the level at pin 46
and measure the waveform’s p-p value.
Video S/N
S/N
46
SG1
80dB
Measure the noise voltage at pin 46 with an RMS
voltmeter through a 10kHz to 5.0MHz band-pass
filter. Vsn
20Log (1.43/Vsn).
C-S beat level
IC-S
46
SG1
SG2
SG3
Input a 80dB
SG1 signal and measure the
DC voltage at pin 3. V3
Mix SG1 = 74dB
, SG2 = 64dB, and SG3 =
64dB
to enter the mixture in the VIF IN. Apply V3
to pin 3 from an external DC power supply. Using a
spectrum analyzer, measure the difference
between pin 46’s 4.43MHz component and
1.07MHz component.
Differential gain
DG
46
SG5
80dB
Using a vector scope, measure the level at pin 46.
Differential phase
DP
46
SG5
80dB
Using a vector scope, measure the level at pin 46.
Maximum AFT
output voltage
VAFTH
10
SG4
80dB
Set and input the SG4 frequency to 37.9MHz to be
input. Measure the DC voltage at pin 10 at that
moment.
Minimum AFT
output voltage
VAFTL
10
SG4
80dB
z
Set and input the SG4 frequency to 39.9MHz to be
input. Measure the DC voltage at pin 10 at that
moment.
AFT detection
sensitivity
VAFTS
10
SG4
80dB
z
Adjust the SG4 frequency and measure frequency
deviation
f when the DC voltage at pin 10
changes from 1.5V to 3.5V.
VAFTS = 2000/
f [mV/kHz]
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA76835NM | AM/FM, AUDIO/VIDEO DEMODULATOR, PQFP80 |
| LA76835NM | AM/FM, AUDIO/VIDEO DEMODULATOR, PQFP80 |
| LA7685J | SPECIALTY CONSUMER CIRCUIT, PDIP64 |
| LA7688B | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP52 |
| LA7688 | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP52 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA76820 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:單片多制式TV處理集成電路 |
| LA76828N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:電視小信號(hào)處理芯片 |
| LA76828N-A-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA76832N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC I2C Bus Control IC |
| LA76835NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC I2C Bus Control IC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。