SANYO LA7567NM, LA7567N Datasheet

Overview

The LA7567N and LA7567NM are PAL/NTSC multi­format audio VIF/SIF IF ICs that adopt a semi­adjustment-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.

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
adjustment of external inductance unnecessary.

• A PAL/NTSC multi-format audio system can be
constructed easily.

• Built-in buzz canceller for excellent audio performance.

•VCC= 5 V, low power dissipation (250 mW)

Package Dimensions

unit: mm

3067-DIP24S

unit: mm

3112-MFP24S

Monolithic Linear IC

50698RM (OT) No. 5765-1/14

SANYO: DIP24S

[LA7567N]

SANYO: MFP24S

[LA7567NM]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

TV and VCR VIF/SIF IF Signal-Processing Circuit with

PAL/NTSC Multi-Format Audio Support

LA7567N, 7567NM

Ordering number : EN5765

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 6V

Circuit voltage V13, V17 V

CC

V

I6 –3 mA

Circuit current I10 –10 mA

I24 –2 mA

TA ≤ 50°C, Independent IC [LA7567NM] 420 mW

Allowable power dissipation Pd max *: Mounted on a printed circuit board 720 mW

TA ≤ 70°C, Independent IC [LA7567N] 500 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –55 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C

Note: When mounted on a 65 × 72 × 1.6 mm paper/phenolic resin printed circuit board.

No. 5765-2/14

LA7567N, 7567NM

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

5 V

Operating supply voltage range V

CC

op 4.5 to 5.5 V

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions

Ratings

Unit

min typ max

[VIF Block]

Circuit current I5 40.8 48.0 55.2 mA
Maximum RF AGC voltage V14H V

CC

– 0.5 V

CC

V
Minimum RF AGC voltage V14L 0 0.5 V
Input sensitivity V

IN

S1 = OFF 33 39 45 dBµV

AGC range G

R

58 63 dB

Maximum allowable input V

IN

max 95 100 dBµV
No-signal state video output voltage V6 3.0 3.3 3.6 V
Synchronizing signal tip voltage V6 tip 1.15 1.45 1.74 V
Video output level V

O

1.36 1.60 1.84 Vp-p

Black noise threshold voltage V

BTH

0.5 0.8 1.1 V

Black noise clamp voltage V

BCL

1.6 1.9 2.2 V
Video signal-to-noise ratio S/N 48 52 dB
C-S beat IC-S 38 43 dB
Frequency characteristics f

C

6 MHz –3.0 –1.5 dB
Differential gain DG 3.0 6.5 %
Differential phase DP 3 5 deg
No-signal state AFT voltage V13 2.0 2.5 3.0 V
Maximum AFT voltage V13H 4.0 4.4 5.0 V
Minimum AFT voltage V13L 0 0.18 1.00 V
AFT detection sensitivity Sf 20 28 37 mV/kHz
VIF input resistance Ri 38.9 MHz 1.5 kΩ
VIF input capacitance Ci 38.9 MHz 3 pF
APC pull-in range (U) f

PU

0.7 1.5 MHz

APC pull-in range (L) f

PL

–1.5 –0.9 MHz
AFT tolerance frequency 1 dfa1 –300 0 +300 kHz
VCO1 maximum variability range (U) dfu 1.0 1.5 MHz
VCO1 maximum variability range (L) dfl –1.5 –1.0 MHz
VCO control sensitivity B 1.4 2.8 6.0 kHz/mV

[First SIF Block]

Conversion gain VG 22 28 32 dB

5.5 MHz output level S

O

32 70 110 mVrms

First SIF maximum input S

IN

max 50 100 mVrms

First SIF input resistance R

IN

(SIF) 33.4 MHz 2 kΩ

First SIF input capacitance C

IN

(SIF) 33.4 MHz 3 pF

[SIF Block]

Limiting sensitivity Vli (lim) 42 48 54 dBµV
FM detector output voltage V

O

(FM) 5.5 MHz ±30 kHz * 480 680 880 mVrms
AMR rejection ratio AMR 50 60 dB
Total harmonic distortion THD 0.3 0.8 %
SIF S/N S/N (FM) 57 62

[SIF Converter]

Conversion gain VG (SIF) 8 11 14 dB
Maximum output level V max 103 109 115 dBµV
Carrier suppression ratio VGR (5.5) 15 21 dB
Oscillator level V

OSC

35 70 mVp-p
Oscillator leakage OSCleak 14 25 dB
Oscillator stopped current I

4

300 µA

Operating Characteristics at Ta = 25°C, VCC= 5 V, fp = 38.9 MHz

Note: *Insert a resistor and capacitor in series between pin 23 and ground to adjust the level to acquire a wide dynamic range in the FM detector output.

Pin Assignment

Internal Equivalent Circuit and External Components

No. 5765-3/14

LA7567N, 7567NM

Allowable power dissipation, Pd max — W

Ambient temperature, Ta — °C

AC Characteristics Test Circuit

Test Circuit

No. 5765-4/14

LA7567N, 7567NM

Impedance

analyzer

No. 5765-5/14

LA7567N, 7567NM

Application Circuit Diagrams
PAL SPLIT

NT (US) SPLIT