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PDF LA7567BVA Data sheet ( Hoja de datos )
| Número de pieza | LA7567BVA | |
| Descripción | TV and VCR IF Signal Processor | |
| Fabricantes | Sanyo | |
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Ordering number : ENN7939B
SANYO Semiconductors
DATA SHEET
LA7567BVA
Monolithic Linear IC
TV and VCR IF Signal Processor
(VIF + SIF + SIF converter)
The LA7567BVA is a PAL/NTSC multiformat VIF/SIF IC that adopts a semi-adjustment-free system. The VIF block
adopts a system in which VCO adjustment makes AFT adjustment unnecessary to simplify adjustment. The FM
detector adopts a PLL detection system that supports multi-detection audio. This IC also integrates an SIF converter,
making design of multisystem products easier. The LA7567BVA uses the 5V supply voltage common in multimedia
equipment. In addition, the LA7567BVA also includes a buzz canceller that suppresses Nyquist buzzing for superb
audio quality.
Functions
• VIF block: VIF amplifier, buzz canceller, PLL detector, IF AGC, RF AGC, AFT, equalizer amplifier.
• First SIF block: First SIF amplifier, first SIF detector.
• SIF block: Limiter amplifier, PLL FM detector.
Features
• No AFT or SIF coils are required, making these circuits adjustment free.
• Allows PAL/NTSC multiformat systems to be implemented easily.
• Built-in buzz canceller for excellent audio quality.
• VCC = 5V, low power: 250mW
Specifications
Maximum Ratings at at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Circuit voltage
Circuit current
Allowable power dissipation
VCC max
V13, V17
I6
I10
I24
Pd max
Ta = ≤ 70°C, when mounted on a PCB*
Operating temperature
Storage temperature
Topr
Tstg
*: Printed circuit board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Rated value
6
VCC
–3
–10
–2
600
–20 to +70
–55 to +150
Unit
V
V
mA
mW
°C
°C
Any and all SANYO 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 representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
82905MS OT B8-6590 No.7939-1/20
1 page  
Test Circuits
LA7567BVA
Input Impedance Test Circuit (VIF and first SIF input impedance)
Impedance analyzer
VIF IN
1st SIF IN
24 23 22 21 20 19 18 17 16 15 14 13
LA7567BVA
1 2 3 4 5 6 7 8 9 10 11 12
VCC
No.7939-5/20
5 Page 
LA7567BVA
C5. OSC leakage (OSC leak)
(1) Internal AGC
(2) fp = 38.9MHz CW; 10mV (VIF input)
fs = 33.4MHz CW; 316µV (First SIF input)
(3) Measure the 6MHz component at test point E (MIX output). ..........V6(dBµV)
(4) Measure the 500kHz component at test point E (MIX output). .......V0.5(dBµV)
(5) Perform the following calculation.
Carrier suppression ratio OSCleak(dB) = V6 - V0.5
Note 1)
Note 2)
Unless otherwise specified for VIF test, apply the VCC voltage to the IF AGC and adjust the VCO coil so
that oscillation occurs at 38.9MHz.
Unless otherwise specified, the SW1 must be ON.
No.7939-11/20
11 Page | ||
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