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PDF LA75694M Data sheet ( Hoja de datos )
| Número de pieza | LA75694M | |
| Descripción | IF Signal Processing | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : ENA0251
LA75694M
Monolithic Linear IC
For Use in TV/VTR Applications
IF Signal Processing
(VIF/SIF for Hi-Fi)
Overview
The LA75694M is a PAL/NTSC split Support VIF/SIF for Hi-Fi signal-processing IC that makes the minimum number
of adjustments possible. The system is designed so that VCO adjustment makes AFT adjustment unnecessary, thus
simplifying the adjustment steps in endproduct manufacturing. PLL detection is adopted in the FM detector, allowing
the LA75694M to support multichannel detection for the audio signal. In addition, it also incorporates a buzz canceller
that suppresses Nyquist buzz for improved audio quality.
Functions
• VIF Block: VIF Amplifier, Buzz Canceller, BNC, PLL Detector, IF AGC, RF AGC, AFT, Equalizer Amplifier
• 1st SIF Block: 1st SIF Amplifier, 1st SIF Detector, AGC
• SIF Block: HPF, MIX, 500kOSC
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Circuit voltage
Circuit current
Allowable power dissipation
VCC max
V13, V17
I6
I10
Pd max
Ta ≤ 50°C, Independent IC
Mounted on a board. ∗
Operating temperature
Topr
Storage temperature
Tstg
∗ When mounted on a 65×72×1.6mm3 paper phenol board.
Ratings
6
VCC
-3
-10
420
720
-20 to +70
-55 to +150
Unit
V
V
mA
mA
mW
mW
°C
°C
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Recommended supply voltage
Operating voltage
VCC
VCC op
Conditions
Ratings
5
4.5 to 5.5
Unit
V
V
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
92706 / 42406 MS OT B8-6166 No.A0251-1/10
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Test Conditions
LA75694M
V1. Circuit current [I5]
(1) Internal AGC
(2) Input a 45.75MHz 10mVrms continuous wave to the VIF input pin.
(3) RF AGC Vr MAX
(4) Connect an ammeter to the VCC and measure the incoming current.
V2.V3. Maximum RF AGC voltage, Minimum RF AGC voltage [V14H, V14L]
(1) Internal AGC
(2) Input a 45.75MHz 10mVrms continuous wave to the VIF input pin.
(3) Adjust the RF AGC Vr (resistor value max.) and measure the maximum RF AGC voltage. ····· F
(4) Adjust the RF AGC Vr (resistor value min.) and measure the minimum RF AGC voltage. ····· F
V4. Input sensitivity [Vi]
(1) Internal AGC
(2) fp = 45.75MHz 400Hz 40% AM (VIF input)
(3) Turn off the S1 and put 100kΩ through.
(4) VIF input level at which the 400Hz detection output level at test point A becomes 0.35Vp-p.
V5. AGC range [GR]
(1) Apply the VCC voltage to the external AGC, IF AGC (pin 17).
(2) In the same manner as for the V4 (input sensitivity), measure the VIF input level at which the detection output
level becomes 0.35Vp-p. ····· Vil
(3) GR = 20log
Vil
Vi
dB
V6. Maximum allowable input [Vi max]
(1) Internal AGC
(2) fp = 45.75MHz 15kHz 78% AM (VIF input)
(3) VIF input level at which the detection output level at test point A is video output (VO) ±1dB.
V7. No-signal video output voltage [V6]
(1) Apply the VCC voltage to the external AGC, IF AGC (pin 17).
(2) Measure the DC voltage of VIDEO output (A).
V8. Sync. signal tip voltage [V6tip]
(1) Internal AGC
(2) Input a 45.75MHz 10mVrms continuous wave to the VIF input pin.
(3) Measure the DC voltage of VIDEO output (A).
V9. Video output level [VO]
(1) Internal AGC
(2) fp = 45.75MHz 15kHz 78% AM Vi = 10mVrms (VIF input)
(3) Measure the peak value of the detection output level at test point A. (Vp-p)
No.A0251-5/10
Datasheet pdf - http://www.DataSheet4U.net/
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