la7567b Sanyo Semiconductor Corporation, la7567b Datasheet

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la7567b

Manufacturer Part Number
la7567b
Description
Tv And Vcr Vif/sif If Signal-processing Circuit With Pal/ntsc Multi-format Audio Support
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

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Ordering number : EN6099
Overview
The LA7567B and LA7567BM are PAL/NTSC multi-
format audio VIF/SIF IF ICs that adopt a semi-
adjustment-free system. The VIF block adopts a technique
that makes AFT adjustment unnecessary by adjusting the
VCO, thus simplifying the adjustment steps in the
manufacturing process. PLL detection is adopted in the
FM detector to support multi-format audio detection. A
built-in SIF converter is included to simplify multi-format
system designs. A 5-V power-supply voltage is used to
match that used in most multimedia systems. In addition,
these ICs also include a buzz canceller to suppress Nyquist
buzz and provide high audio quality. The LA7567B and
LA7567BM feature improvements over the LA7567N and
LA7567NM in the audio and video signal-to-noise ratios
and the video signal amplitude.
Functions
[VIF]
• VIF amplifier • PLL detector • BNC • RF AGC
• EQ amplifier • AFT • IF AGC • Buzz canceller
[First SIF]
• First SIF • First SIF detector • AGC
[SIF]
• Multi-format SIF converter • Limiter amplifier
• PLL FM detector
Features
• Both AFT and SIF inductors built in, thus making
• A PAL/NTSC multi-format audio system can be
• Built-in buzz canceller for excellent audio performance.
• V
adjustment of external inductance unnecessary.
constructed easily.
CC
= 5 V, low power dissipation (250 mW)
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
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
TV and VCR VIF/SIF IF Signal-Processing Circuit with
PAL/NTSC Multi-Format Audio Support
Package Dimensions
unit: mm
3067A-DIP24S
unit: mm
3112A-MFP24S
(0.71)
24
1
0.9
1.78
24
1
0.48
LA7567B, 7567BM
21.0
12.5
[LA7567BM]
0.35
[LA7567B]
0.95
1.0
13
12
40703AS (OT) No. 6099-1/15
13
12
(0.75)
Monolithic Linear IC
0.15
SANYO: MFP24S
SANYO: DIP24S

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la7567b Summary of contents

Page 1

... A 5-V power-supply voltage is used to match that used in most multimedia systems. In addition, these ICs also include a buzz canceller to suppress Nyquist buzz and provide high audio quality. The LA7567B and LA7567BM feature improvements over the LA7567N and LA7567NM in the audio and video signal-to-noise ratios and the video signal amplitude ...

Page 2

... VCO1 maximum variability range (U) VCO1 maximum variability range (L) VCO control sensitivity LA7567B, 7567BM Symbol Conditions V max CC V13, V17 I6 I10 I24 Ta ≤ 70°C, Independent IC : LA7567B Ta ≤ 50°C, Independent IC : LA7567BM Pd max *: Mounted on a printed circuit board Topr Tstg Symbol Conditions 38.9 MHz CC ...

Page 3

... LA7567B, 7567BM Symbol Conditions LA7567B VG LA7567BM LA7567B S O LA7567BM S max IN R (SIF) 33.4 MHz IN C (SIF) 33.4 MHz IN Vli (lim) 5.5 MHz ±30 kHz *: LA7567B V (FM) O 5.5 MHz ±30 kHz *: LA7567BM AMR THD S/N (FM) VG (SIF) V max VGR (5.5) V OSC OSCleak DET OUT 800 23 FM FILTER ...

Page 4

... Internal Equivalent Circuit and External Components RFAGC AUDIO OUT PUT 5 620 BPF 6 MHz 330 LA7567B, 7567BM VR SAW ( 400 400 VIDEO OUT IF IN PUT RF AGC ...

Page 5

... MIX EQ HPF AMP VIDEO 330 OUT CONV.OUT ( Impedance analyzer VIF IN 1st SIF LA7567B, 7567BM 1st SIF AGC OUT ( F ) AFT OUT ( 1st AMP 1st AFT DET VCO 9 ...

Page 6

... LIM AMP MIX HPF BPF 330 NT (US) SPLIT 5 OUT DET LIM AMP MIX HPF BPF 330 LA7567B, 7567BM IN PUT TSF5315 SAW ( S ) SAW ( P ) GND VIF RF IF AMP AGC AGC AGC VIDEO DET HPF HPF EQ AMP ...

Page 7

... AF OUT DET LIM AMP BPF 330 NT (US) INTER 5 OUT DET LIM AMP BPF 330 LA7567B, 7567BM IN PUT TSF1137 SAW ( S ) SAW ( P ) GND VIF RF IF AMP AGC AGC AGC VIDEO DET HPF HPF MIX ...

Page 8

... When the RF AGC circuit is not used: Leave pins 14 and 21 open. Insert a 0.01-µF capacitor between pin 21 and ground for oscillation prevention DET LIM AMP MIX HPF LA7567B, 7567BM IN PUT TSF5315 SAW ( S ) SAW ( P ) GND VIF ...

Page 9

... Providing this external resistor stops the 500-kHz oscillator and allows the converter to be used as an amplifier. • Use the shortest distance possible when decoupling and ground. LA7567B, 7567BM Description 4 200 CC Equivalent circuit 1 ...

Page 10

... A and the loop gain is reduced. When unlocked and during weak field reception, the VCO is 9 APC FILTER controlled by loop B and the loop gain is increased. For this APC filter we recommend 150 to 390 Ω 0.47 µF LA7567B, 7567BM Description Equivalent circuit 6 ...

Page 11

... SAW filter and the IC to neutralize the 15 1st SIF INPUT SAW filter output capacitance and the IC input capacitance. • When used in an intercarrier system: This pin (pin 15) may be left open. LA7567B, 7567BM Description to tuner Equivalent circuit ...

Page 12

... AGC speed, and other characteristics. • VIF amplifier input. The input circuit is a balanced circuit, and the input circuit 18 VIF input constants are 1.5 kΩ GND LA7567B, 7567BM Description 18 19 Equivalent circuit INTER/SPLIT SW LO=INTER 16 A12040 A12041 A12042 Continued on next page ...

Page 13

... FM Detector output degraded. If this problem occurs, add a resistor between pin 24 and ground. R1 ≥ 5.1 kΩ • For applications that support mono: Create an external deemphasis circuit LA7567B, 7567BM Description 22 Forms a chrominance killer trap. A12044 R2 Equivalent circuit 4 ...

Page 14

... Picture SAW filter TSF1137U (SPLIT) Sound SAW filter (INTER) Toko Co., Ltd. 2-1-17 Higashi-yukigaya, Ohta-ku, Tokyo, Japan TEL: +81-3-3727-1167 LA7567B, 7567BM SAW filter characteristics The high band is extended With the Tuning Set to the Vicinity of S and 45.75 MHz 0.12 ø 0.12 ø ...

Page 15

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of April 2003. Specifications and information herein are subject to change without notice. LA7567B, 7567BM PS No. 6099-15/15 ...

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