- 您現在的位置：買賣IC網 > PDF目錄30724 > LA7567EV AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 PDF資料下載
參數資料
| 型號： | LA7567EV |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封裝： | 0.275 INCH, SSOP-24 |
| 文件頁數： | 20/21頁 |
| 文件大?。?/td> | 208K |
| 代理商： | LA7567EV |
V15.V16. Differential gain, differential phase . . . [DG, DP]
(1) Internal AGC
(2) fp = 38.9MHz ALP50% 87.5% modulation video signal Vi = 10mVrms
(3) Measure the DG and DP at test point A
V17. No signal AFT voltage . . . . . . . . . . . . . . . . . [V13]
(1) Internal AGC
(2) Measure the DC voltage at the AFT output (B).
V18.V19.V20. Maximum minimum AFT output voltage, AFT detection sensitivity . . . . [V13H, V13L, Sf]
(1) Internal AGC
(2) fp = 38.9MHz
±1.5MHz Sweep = 10mVrms (VIF input)
(3) Maximum voltage: V13H, minimum voltage: V13L
(4) Measure the frequency deviation at which the voltage at test point B changes from V1 to V2.
..........
f
V21.V22. VIF input resistance, Input capacitance . . . . . . . . . . [Ri, Ci]
(1) Referring to the input impedance Test Circuit, measure Ri and Ci with an impedance analyzer.
V23.V24. APC pull-in range. . . . . . . . . . . . . . . . . . [fpu, fpl]
(1) Internal AGC
(2) fp = 33MHz to 44MHz continuous wave; 10mVrms
(3) Adjust the SG signal frequency to be higher than fp = 38.9MHz to bring the PLL to unlocked state.
Note: GThe PLL is assumed to be in unlocked state when a beat signal appears at test point A.
(4) When the SG signal frequency is lowered, the PLL is brought to locked state again. ...........(f1)
(5) Lower the SG signal frequency to bring the PLL to unlocked state.
(6) When the SG signal frequency is raised, the PLL is brought to locked state again. ...........(f2)
(7) Calculate as follows:
fpu = f1 - 38.9MHz
fpl = f2 - 38.9MHz
V25. AFT tolerance frequency . . . . . . . . . . . . . . . [
Fa1]
(1) Internal AGC
(2) SG1:37.9MHz to 40.9MHz variable continuous wave 10mVrmns
(3) Adjust the SG1 signal frequency so that the AFT output DC voltage (test point B) becomes
2.5V; that SG1 signal frequency is f1.
(4) External AGC (Adjust the V17.)
(5) Apply 5V to the IFAGC (pin 17) and then pick up the VCO oscillation frequency from GND, etc. and measure
the frequency
(f2)
(6) Calculate as follows:
AFT tolerance frequency
Fa1 = f2 - f1(kHz)
No.7779-8/21
LA7567EV
mV/kHz
f (kHz)
2000(mV)
Sf =
V13H
V13L
V1 ; 3.5V
V2 ; 1.5V
IF frequency (MHz)
AFT
output
(V)
f
相關PDF資料 |
PDF描述 |
|---|---|
| LA7567EV | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567GM | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567GM | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567GVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567GVA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LA7567GM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with NTSC SPLIT Support |
| LA7567N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
| LA7567NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
| LA75691 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:IF Signal-Processing IC for PAL/NTSC Multichannel Audio TV and VCR Systems |
| LA75694M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Use in TV/VTR Applications IF Signal Processing (VIF/SIF for Hi-Fi) |
發布緊急采購，3分鐘左右您將得到回復。