SANYO LA7337 Datasheet

Monolithic Linear IC

Ordering number : N5288A

13097 HA (OT) No. 5288-1/7

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

SECAM-Format VCR

Chroma Signal-Processing Circuit

LA7337

Overview

The LA7337 is an IC that implements SECAM-format
VCR signal processing in a single chip. It incorporates
band-pass filters and a SECAM discrimination circuit on
chip and features automatic adjustment of the bell filter for
a reduced number of external components and adjustment­free circuit operation.

Features

• All required filters, except for the bell filter,
incorporated on chip.

• Automatic adjustment of the bell filter f0parameter

• Built-in SECAM discrimination circuit

Functions

•4.3-MHz and 1.1-MHz band-pass filters, limiter, AGC (in
playback mode)

• Divide-by-four circuit, 4× frequency multiplier circuit,

2.2-MHz band-pass filter

• Bell filter f0automatic adjustment circuit, SECAM
discrimination circuit

• Sync gate

Package Dimensions

unit: mm

3063-DIP28S

SANYO: DIP28S

[LA7337]

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 7V
Allowable power dissipation Pd max Ta ≤ 70°C 600 mW
Operating temperature Topr –15 to +70 °C
Storage temperature Tstg –40 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

5V

Operating supply voltage range V

CC

op 4.8 to 5.5 V

Operating Conditions at Ta = 25°C

No. 5288-2/7

LA7337

Parameter Symbol Conditions

Ratings

Unit

min typ max

Record mode current drain I

CCR

V5 = V6 = 0 V, V16 = 0 V, S27 = composite

50 70 90 mA

sync., S15 = color bar signal

4.3-MHz band-pass filter characteristics (1) V

F4C

V6 = 5 V, V16 = 0 V, S27 = composite sync.

145 180 215 mVp-p

S15 = sine wave (200 mVp-p, f = 4.286 MHz)
As above, except S15 = sine wave

4.3-MHz band-pass filter characteristics (2) G

F4L1

(200 mVp-p, f = 1.1 MHz), taking V

F4C

as the –30 –20 dB

reference (0 dB)
As above, except S15 = sine wave

4.3-MHz band-pass filter characteristics (3) G

F4L2

(200 mVp-p, f = 2.2 MHz), taking V

F4C

as the –10 –5 dB

reference (0 dB)
As above, except S15 = sine wave

4.3-MHz band-pass filter characteristics (4) G

F4H

(200 mVp-p, f = 7.5 MHz), taking V

F4C

as the –30 –20 dB

reference (0 dB)
V5 = V6 = 0 V, V16 = 0 V, SW21B = on,

Record mode bell filter center frequency (1) F

BLR1

S15 = sine wave (200 mVp-p, f = 4 to 5 MHz), 4.243 4.286 4.329 MHz
S27 = composite sync.

Record mode bell filter center frequency (2) F

BLR2

As above, except V5 = 4 V. 4.493 4.536 4.579 MHz
V5 = V6 = 0 V, V16 = 0 V, SW21B = on,

Record mode bell filter characteristics (1) V

BLRC

S15 = sine wave (200 mVp-p, f = FBLR1), 200 250 300 mVp-p
S27 = composite sync.

As above, except S15 = sine wave

Record mode bell filter characteristics (2) G

BLRL

(200 mVp-p, f = 3.8 MHz), taking V

BLRC

as –14 –11 –8 dB

the reference (0 dB)
As above, except S15 = sine wave

Record mode bell filter characteristics (3) G

BLRH

(200 mVp-p, f = 4.8 MHz), taking V

BLRC

as –14 –11 –8 dB

the reference (0 dB)
V5 = V6 = 0 V, S15 = a SECAM color bar

Record mode killer operating level G

KLR

signal (variable level), V16 = 0 V, SW21B = on,

–28 –23 –18 dB

V23 = 3.4 V, V24 = 3.7 V, S27 = composite sync.
SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V,

Record equalization center frequency (1) F

EQR1

S21 = sine wave (200 mVp-p, f = 4 to 5 MHz),

1.0608 1.0715 1.0822 MHz

SW21A = SW21B = on, S27 = composite sync.

Record equalization center frequency (2) F

EQR2

As above, except V6 = 4 V 1.0788 1.0895 1.1002 MHz
SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V,

Record equalization characteristics (1) V

EQRC

S21 = sine wave (200 mVp-p, f = FEQR1 × 4),

65 85 105 mVp-p

SW21A = SW21B = on, S27 = composite sync.

Record equalization characteristics (2) G

EQRL

As above, except S21 = sine wave (200 mVp-p,

8 11 14 dB

f = 3.8 MHz), taking V

EQRC

as the reference (0 dB)

Record equalization characteristics (3) G

EQRH

As above, except S21 = sine wave (200 mVp-p,

8 11 14 dB

f = 4.8 MHz), taking V

EQRC

as the reference (0 dB)

SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V,

Record chrominance signal output level V

OR

S15 = sine wave (200 mVp-p, f = 4.4 MHz), 80 110 140 mVp-p
SW21B = on, S27 = composite sync.

Record chrominance signal output unnecessary

As above, except measure the 2.2 MHz

spectrum (1)

GSR1 component in the T11 signal. Taking V

OR

as –30 –20 dB

the reference (0 dB).

Record chrominance signal output unnecessary

As above, except measure the 3.3 MHz

spectrum (2)

GSR2 component in the T11 signal. Taking V

OR

as –30 –20 dB

the reference (0 dB).
V5 = V6 = 0 V, V16 = 5 V, S27 = composite

Playback mode current drain I

CCP

sync., S13 = sine wave 60 80 100 mA
(50 mVp-p, f = 1.0715 MHz)

V6 = 5 V, SW8B = on, V16 = 5 V,

AGC control characteristics (1) V

AGC

S27 = composite sync., S13 = sine wave 90 120 150 mVp-p
(50 mVp-p, f = 1.0715 MHz)

As above, except S13 = sine wave

AGC control characteristics (2) G

AGC1

(100 mVp-p, f = 1.0715 MHz) –1 0 +1 dB
Taking V

AGC

as the reference (0 dB).

As above, except S13 = sine wave

AGC control characteristics (3) G

AGC2

(25 mVp-p, f = 1.0715 MHz) –1 0 +1 dB
Taking V

AGC

as the reference (0 dB).

V6 = 5 V, SW14 = on, V14 = V14R,

1.1-MHz band-pass filter characteristics (1) G

F1L

S13 = sine wave (50 mVp-p, f = 500 kHz),

–3 0 +3 dB

V16 = 5 V, S27 = composite sync., taking
VAGC as the reference (0 dB).

As above, except S13 = sine wave

1.1-MHz band-pass filter characteristics (2) G

F1H1

(50 mVp-p, f = 2.2 MHz) –30 –20 dB
Taking V

AGC

as the reference (0 dB).

As above, except S13 = sine wave

1.1-MHz band-pass filter characteristics (3) G

F1H2

(50 mVp-p, f = 3.3 MHz) –35 –25 dB
Taking V

AGC

as the reference (0 dB).

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

Continued on next page.

No. 5288-3/7

LA7337

Continued from preceding page.

Parameter Symbol Conditions

Ratings

Unit

min typ max

V6 = 0 V, SW8B = on, SW14 = on,

Playback equalization center frequency (1) F

EQP1

V14 = V14R, S13 = sine wave

1.0608 1.0715 1.0822 MHz

(50 mVp-p, f = 1 to 1.2 MHz), V16 = 5 V,
S27 = composite sync.

Playback equalization center frequency (2) F

EQP2

As above, except V6 = 4 V 1.0788 1.0895 1.1002 MHz
V6 = 0 V, SW8B = on, SW14 = on,

Playback equalization characteristics (1) V

EQPC

V14 = V14R, S13 = sine wave

120 150 180 mVp-p

(50 mVp-p, f = FEQP1), V16 = 5 V,
S27 = composite sync.

As above, except S13 = sine wave

Playback equalization characteristics (2) G

EQPL

(50 mVp-p, f = 950 kHz), taking V

EQP

as the –14 –11 –8 dB

reference (0 dB).
As above, except S13 = sine wave

Playback equalization characteristics (3) G

EQPH

(50 mVp-p, f = 1.2 MHz), taking V

EQP

as the –14 –11 –8 dB

reference (0 dB).
SW1 = on, V1 = 5 V, V5 = V6 = 0 V,

Playback bell center frequency (1) F

BLP1

SW8A = SW8B = on, V16 = 5 V,

4.243 4.286 4.329 MHz

S27 = composite sync., S8 = sine wave
(200 mVp-p, f = 1 to 1.2 MHz),

Playback bell center frequency (2) F

BLP2

As above, except V5 = 4 V 4.493 4.536 4.579 MHz
SW1 = on, V1 = 5 V, V5 = V6 = 0 V,

Playback bell characteristics (1) V

BLPC

SW8A = SW8B = on, S8 = sine wave

65 85 105 mVp-p

(200 mVp-p, f = FBLP × 1/4), V16 = 5 V,
S27 = composite sync.

As above, except S8 = sine wave

Playback bell characteristics (2) G

BLPL

(200 mVp-p, f = 950 kHz), taking V

BLPC

as 8 11 14 dB

the reference (0 dB).
As above, except S8 = sine wave

Playback bell characteristics (3) G

BLPH

(200 mVp-p, f = 1.2 MHz), taking V

BLPC

as 8 11 14 dB

the reference (0 dB).
SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 5 V,

Playback chrominance signal output level V

OP

S13 = sine wave (200 mVp-p, f = 1.1 MHz), 130 160 190 mVp-p
SW8B = on, S27 = composite sync.

Playback chrominance signal output

As above, except measure the 2.2 MHz

unnecessary spectrum (1)

GSP1 component in the T17 signal. Taking V

OP

as –25 –15 dB

the reference (0 dB).

Playback chrominance signal output

As above, except measure the 3.3 MHz

unnecessary spectrum (2)

GSP2 component in the T17 signal. Taking V

OP

as –20 –10 dB

the reference (0 dB).

CLK input level V

CLK

f = 4.433619 MHz 100 200 800 mVp-p

Synchronizing signal input threshold level V

THS

1.8 2 2.2 V

SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V,

Record mode sync gate start time (muting off) T

RGB

S15 = sine wave (200 mVp-p, f = 4.286 MHz), –0.3 +0.2 +0.7 µs
SW21B = on, S27 = composite sync.

Record mode sync gate start time (muting on) T

RGBM

As above, except SW2 = on 1.5 2 2.5 µs

Record mode sync gate release time T

RGE

As above 4.5 5.0 5.5 µs

Record mode mute setting resistance VTSP2 10 20 30 kΩ

SW1 = on, V5 = V6 = 0 V, SW8B = on,

Playback mode sync gate start time T

PGB

S13 = sine wave (50 mVp-p, f = 1.0715 MHz), 1.5 2 2.5 µs
V16 = 5 V, S27 = composite sync.

Playback mode sync gate release time T

PGE

As above 4.5 5.0 5.5 µs

BGP start time T

BGB

V5 = 0 V, V6 = 5 V, SW21B = on, V16 = 0 V,

6.0 6.5 7.0 µs

S27 = composite sync.

BGP amplitude T

BGW

As above 2.0 2.5 3.0 µs

SECAM discriminator output resistance R26 SW25 = on, V25 = 5 V 7 10 13 kΩ
Record mode SECAM discriminator

V5 = V6 = 0 V, V16 = 0 V, SW21B = on,

characteristics (1)

V

SCMR1

S27 = composite sync., S15 = SECAM color 4.5 V
bar signal

Record mode SECAM discriminator

V

SCMR2

As above, except S15 = PAL color bar signal 0.5 V

characteristics (2)

Continued on next page.