Datasheet LA7337 Datasheet (SANYO)

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Page 1

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

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

Operating supply voltage range V

op 4.8 to 5.5 V

Operating Conditions at Ta = 25°C

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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

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

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

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.

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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

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

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

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)

SCMR1

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

Record mode SECAM discriminator

SCMR2

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

characteristics (2)

Continued on next page.

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LA7337

[Record/playback mode settings]

Pin 16 = low → record mode Pin 16 = high → playback mode

[Bell filter offset adjustment]

Increasing the pin 6 voltage increases the 1.1-MHz bell filter center frequency (f0). Increasing the pin 5 voltage increases the 4.3-MHz bell filter center frequency (f0).

[Test mode settings]

The IC enters test mode if pin 6 is set to 5 V. The pin 5, 11, 17, and 26 outputs behave as follows in this mode. Pin 5: The 4.43-MHz VCO output appears (However, note that a load of about 1 kΩ is required between this pin and

VCC.) Pin 11: The 1.1-MHz band-pass filter output appears. Pin 17: The 4.3-MHz band-pass filter output appears. Pin 26: The BGP (used for SECAM discrimination, playback AGC, and record killer) can be monitored.

Standard Input Signal Levels

Continued from preceding page.

Parameter Symbol Conditions

Ratings

Unit

min typ max

Playback mode phase detector output

V5 = V6 = 0 V, SW8B = on, V16 = 5 V,

difference voltage (1)

SCPD1

S27 = composite sync., S13 = sine wave 150 180 mV (50 mVp-p, f = 1.0625/1.1016 MHz)

Playback mode phase detector output

SCPD2

As above, except S13 = sine wave

100 mV

difference voltage (2) (50 mVp-p, f = 627 kHz) Playback mode SECAM discriminator

SCMP1

V16 = 5 V, SW23 = SW24 = On 4.5 V

characteristics (1) Playback mode SECAM discriminator

SCMP2

V16 = 5 V, SW23 = SW24 = On 0.5 V

characteristics (2) SECAM discriminator comparator

TCOMP

SW25 = On 3.2 3.5 3.8 V

threshold voltage Record/playback control threshold voltage V

TRP

2.3 2.5 2.7 V

V16 = 0 V, SW25 = on, V25 = 3 V,

Forced SECAM mode threshold voltage V

THSM

S27 = composite sync., S15 = sine wave 4 V (200 mVp-p, f = 4.286 MHz)

V16 = 0 V, SW25 = on, V25 = 4 V,

Forced mute mode threshold voltage V

THMM

S27 = composite sync., S15 = sine wave 1 V (200 mVp-p, f = 4.286 MHz)

Reference voltage V

REG

4.1 4.3 4.5 V

REC-IN (pin 15) The 200 mVp-p ID component PB-IN (pin 13) 50 mVp-p

Internal filter group delay times (reference values)

1.1 MHz BPF 460 ns (PB) 430 ns (REC)

2.2 MHz BPF 180 ns

4.3 MHz BPFA 230 ns

4.3 MHz BPFB 170 ns

[Muting control table]

Voltage applied to pin 1 Output signal mode (pins 17 and 11)

4 V or higher Forced SECAM

Open AUTO (Uses the output of the internal discriminator)

1 V or lower Forced mute mode

Page 5

Block Diagram

No. 5288-5/7

LA7337

Page 6

No. 5288-6/7

LA7337

Test Circuit Diagram

Note: Use an FET probe when measuring T8, T21, and BGP.

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No. 5288-7/7

LA7337

This catalog provides information as of January, 1997. Specifications and information herein are subject to change without notice.

■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss.

■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:

➀

Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use:

➁

Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.

■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. 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.

Test Circuit Diagram