Datasheet LA70011M, LA70011 Datasheet (SANYO)

Page 1

Overview

The LA70011 and LA70011M are recording/playback amplifiers for VHS VCR video signals. When used in combination with the LA71000M and LA71500M Series of video signal processing ICs, they permit Y/C recording without current adjustment.

Features

• Connecting the playback amplifier input directly to the head reduces the number of external elements required.

• The recording amplifiers use a fixed-current drive configuration that yields stable recording characteristics even under changing loads. They include built-in automatic gain control circuits.

• Using the same dimensions and pin assignments as the LA70001 and LA70001M permits the use of the same circuit boards as these earlier chips. The LA70011 can also be mounted at the right end of an LA70020 socket.

Package Dimensions

unit: mm

3067-DIP24S

unit: mm

3112-MFP24S

Monolithic Linear IC

22798RM (OT) No. 5710-1/11

SANYO: DIP24S

[LA70011]

SANYO: MFP24S

[LA70011M]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Recording/Playback Amplifier for VHS VCRs

LA70011, 70011M

Ordering number : EN5710A

Parameter Symbol Conditions Ratings Unit

Maximum power supply voltage V

max 7.0 V

Maximum power dissipation Pd max

Ta ≤ 65°C [LA70011] 600 mW Ta ≤ 65°C [LA70011M] 114.3

× 76.1 × 1.6 mm: glass epoxy 500 mW Operating temperature Topr –10 to +65 °C Storage temperature Tstg –40 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended power supply voltage V

5.0 V

Operating power supply voltage range V

op 4.8 to 5.5 V

Operating Conditions at Ta = 25°C

Page 2

No. 5710-2/11

LA70011, 70011M

Parameter Symbol Conditions

Ratings

Unit

min typ max

Playback Mode

Current drain I

CCP

Current flowing into pin 13 44 53 60 mA

SP-L CH1 G

1565962dB

Voltage gain

SP-H CH2 G

= 38 mVp-p, f = 1 MHz

56 59 62 dB

EP-L CH3 G

3565962dB

EP-H CH4 G

4565962dB

Voltage gain difference

∆G

1GVP1 — GVP2–10+1dB

∆G

2GVP3 — GVP4–10+1dB

Intermode gain difference ∆G

3GVP3 — GVP1–10+1dB

CH1 V

NIN1

Ratio of the output from a 1.1 MHz low pass

Converted input noise voltage

CH2 V

NIN2

filter to the output with no input under the

1.0 1.5 µVrms

CH3 V

NIN3

same conditions as those used for measuring

CH4 V

NIN4

voltage gain.

CH1 ∆V

1 Ratios of the output for VIN= 38 mVp-p and

Frequency characteristic

CH2 ∆V

fp2

f = 7 MHz to the voltage gains GVP1, GVP2,

–2.5 0 dB

CH3 ∆V

fp3GVP

3, and GVP4.

CH4 ∆V

fp4

CH1 ∆V

HDP

1 Ratio of the 8 MHz (secondary) component of

Secondary harmonic distortion

CH2 ∆V

HDP2

the output to its 4 MHz (primary) component

–40 –35 dB

CH3 ∆V

HDP3

for VIN= 38 mVp-p and f = 4 MHz.

CH4 ∆V

HDP4

CH1 ∆V

OMP

1 Output level, for f = 1 MHz, at which the ratio

Maximum output level

CH2 ∆V

OMP2

of the 3 MHz (tertiary) component to the

1.0 1.2 Vp-p

CH3 ∆V

OMP3

1 MHz (primary) component is -30 dB.

CH4 ∆V

OMP4

VCR1

Ratio of the output for V

= 38 mVp-p and

–40 –35 dB

Crosstalk SP

f = 4 MHz to G

Ratio of the output for V

= 38 mVp-p and

–40 –35 dB

f = 4 MHz to G

Ratio of the output for V

= 38 mVp-p and

–40 –35 dB

Crosstalk EP

f = 4 MHz to G

Ratio of the output for V

= 38 mVp-p and

–40 –35 dB

f = 4 MHz to G

∆V

ODC

1 CH1 — CH2

∆V

ODC

2 CH3 — CH4

Output DC offset

∆V

ODC

3 CH1 — CH3

–100 0 +100 mV

∆V

ODC

4 CH2 — CH4

∆V

ODC

5 CH1 — CH4

∆V

ODC

6 CH2 — CH3

Envelope detector output pin voltage V

ENV

T6 DC level with no signal input. 0.0 08 1.3 V

ENVSP

T6 DC level at which T7A output level is

2.0 2.5 3.0 V

Envelope detector output pin voltage SP

175 mVp-p for f = 4 MHz.

ENVSP

T6 DC level at which T7A output level is

4.0 4.5 5.0 V

400 mVp-p for f = 4 MHz.

ENVEP

T6 DC level at which T7A output level is

2.0 2.5 3.0 V

Envelope detector output pin voltage EP

125 mVp-p for f = 4 MHz.

ENVEP

T6 DC level at which T7A output level is

4.0 4.5 5.0 V

300 mVp-p for f = 4 MHz.

Comparator output voltage

COMP

1 T2 DC level for VIN= 38 mVp-p and f = 4 MHz. 0.4 0.7 V

COMP

2 T2 DC level for VIN= 38 mVp-p and f = 4 MHz. 4.5 4.8 V

SW-Tr on resistance during playback

PON

DC difference for 1 and 2 mA current inputs. 4 6 Ω

PON

TR1-1 Normal → Trick1 : *13.25.0V

Trick threshold level

TR1-2 Trick1 → Normal 1.2 2.8 V TR2-1 Normal → Trick2 : *10.00.8V TR2-2 Trick2 → Normal 1.2 2.8 V

Operating Characteristics at Ta = 25°C

Continued on next page.

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No. 5710-3/11

LA70011, 70011M

Parameter Symbol Conditions

Ratings

Unit

min typ max

HA playback threshold level

HAP-1 SP →EP : *11.75.0V HAP-2 EPSP 0.0 1.3 V

SW30 threshold level

SW30-1 Lch → Hch : *11.25.0V SW30-2 Hch → Lch 0.0 0.8 V

Recording Mode

Current drain I

CCR

Current input at pin 13. 52 59 66 mA

RSP

Output level for VIN= 400 mVp-p and

127 135 143 mVp-p

REC AGC AMP output level

f = 4 MHz.

REP

104 111 119 mVp-p

Intermode gain difference ∆GVR VRSP/VREP 1.4 1.7 2.0 dB

∆V

AGC

1-SP

Output level divided by V

RSP

or V

REP

for

0.5 1.0 dB

REC AGC AMP control characteristic

∆V

AGC

1-EP

f = 4 MHz and VIN= 700 mVp-p.

∆V

AGC

2-SP

Output level divided by V

RSP

or V

REP

for

–1.0 –0.5 dB

∆V

AGC

2-EP

f = 4 MHz and VIN= 100 mVp-p.

REC AGC AMP frequency characteristic

∆V

FRS

Ratio of f = 7 MHz output to f = 1 MHz output

–1 0 +1 dB

∆V

FRE

for VIN= 400 mVp-p. *2

∆V

HDRS

Ratio of the 8 MHz (secondary) component of

REC AGC AMP secondary primary distortion

∆V

HDRE

the output to its 4 MHz (primary) component –45 –40 dB for V

= 400 mVp-p and f = 4 MHz.

REC AGC AMP maximum output level

∆V

MOSP

Output level, for f = 4 MHz, at which the

20 22 mApp

∆V

MOEP

secondary distortion is –35 dB.

REC AGC AMP muting attenuation

∆V

MRS

Output level divided by V

RSP

or V

REP

for

–45 –40 dB

∆V

MRE

f = 4 MHz and VIN= 400 mVp-p.

∆V

CYS

Output ratio (4M ± 629k)/4M for

REC AGC AMP cross modulation relative level

∆V

CYE

VIN= 400 mVp-p and f = 4 MHz at T9A and –45 –40 dB V

= 2.4 Vp-p and f = 629 kHz at T10A.

HA REC threshold level

-1 SP → EP : *11.75.0V

-2 EP → SP 0.0 1.3 V

REC MUTE threshold level

MUTE-1 MUTE OFF → MUTE ON *11.22.8V MUTE-2 MUTE ON → MUTE OFF 3.2 5.0 V

REC PB threshold level

PB-REC PB → REC *11.25.0V REC-PB REC → PB 0.0 0.8 V

Continued from preceding page.

Notes:* Before measuring the items under Playback Mode, input a 0 to 5.0 V trigger pulse to T5 (H-SYNC), the pin from which the LA70011 takes its T3

(HA) control switch timing.

* The resistance between pins 13 and 14 must be accurate to within 1.0%. *1. These are voltage application points. *2. Apply a DC voltage of approximately 1.8 V to the AGC wave detector filter pin (pin 15) to fix the AGC amplifier gain. *3. Apply a DC voltage to the REC-CUR-Adj pin (pin 12) and adjust the output level.

Page 4

No. 5710-4/11

LA70011, 70011M

Pin Descriptions

Pin Number Pin Name Standard DC Voltage (V) Equivalent Circuit Notes

1 TRICK-H

2 COMP-OUT EP > SP ENV High

H: min. 4.5 V L: max. 0.7 V

REC Open

3 HA (EP/SP)

3.0 V

1.0 V

Trick1

NORMAL

Trick2

1.0 V

4 SW30

1.0 V

Hch

Lch

5 H-SYNC

1.5 V

SYNC

Continued on next page.

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No. 5710-5/11

LA70011, 70011M

Continued from preceding page.

Pin Number Pin Name Standard DC Voltage (V) Equivalent Circuit Notes

6 ENVDET-OUT

7 PB-OUT

GND

9 REC-Y-IN

REC

See relevant documents.

REC

1.7

2.1

REC

4.0

3.7

10 REC-C-IN

11 REC/MUTE/PB

REC

4.0

3.7

3.0 V

1.0 V

REC

MUTE

Continued on next page.

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No. 5710-6/11

LA70011, 70011M

Continued from preceding page.

Pin Number Pin Name Standard DC Voltage (V) Equivalent Circuit Notes

REC-CURRENT-

ADJ2

REC

2.5 V

REC-CURRENT-

ADJ1

REC

5.0

4.5

16 19 21 24

17 22

REC-AGC-FILT

SP L-IN

SP H-IN

EP L-IN

EP H-IN

REC SP OUT

EP OUT

REC

2.1

1.6

4.1

Continued on next page.

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No. 5710-7/11

LA70011, 70011M

Continued from preceding page.

Usage Notes Control Pin Logic Switching Trick Mode with Pin 1

GND < pin 1 level - DC < 1.0 V: TRICK2

1.0 V < pin 1 level - DC < 3.0 V: NORMAL

3.0 V < pin 1 level - DC < 5.0 V: TRICK1

NORMAL Mode Two channels selected with pin 3 (EP/SP): ON Envelope comparator: OFF

TRICK1 and TRICK2 Modes All four channels: ON Envelope comparator: OFF

Difference between TRICK1 and TRICK2 modes (See the Block Diagram.) TRICK1 is a special playback mode using the following path

Envelope comparator OUT (pin 2) → Servo (microcontroller) → Pin 3 (HA) → HA-SW

TRICK2 provides SP searching

Envelope comparator OUT → HA-SW

HA-SW (EP/SP mode switch): Pin 3

GND < pin 3 level - DC < 1.5 V: SP mode

1.5 V < pin 3 level - DC < 5 V: EP mode

Pin Number Pin Name Standard DC Voltage (V) Equivalent Circuit Notes

18 23

PB FILT

REC

2.5

Page 8

Synchronization of HA Switching Timing during Playback with H-SYNC Signal

During playback, the LA70011’s video circuits synchronize the HA-SW switching timing shown in the following figure with the H-SYNC signal from pin 5. (Other EP/SP switching takes place in real time.)

Comparator Output: Pin 2

EP envelope > SP envelope: High (min. 4.0 V) EP envelope < SP envelope: Low (max. 0.7 V)

H-SYNC Input: Pin 5

Pin 5 level - DC > 1.5 V: H-SYNC interval

Playback: — Determines timing of HA switching (EP/SP) — Determines timing of special playback

Recording: — Serves as gate pulse for REC-AGC-AMP SYNC unit

REC/REC-MUTE/PB Switching: Pin 11

GND < pin 11 level - DC < 1.0 V: PB mode

1.0 V < pin 11 level - DC < 3.0 V: REC mode, REC-MUTE

3.0 V < pin 11 level - DC < 5.0 V: REC mode

No. 5710-8/11

LA70011, 70011M

Page 9

Envelope Detector Characteristic: Pin 6 The LA70011 includes a built-in playback signal envelope detector circuit for use in automating tracking adjustment.

REC AMP Gain Control The LA70011 eliminates recording current adjustment by adding an automatic gain control circuit to the recording amplifier. It is also possible to change the recording current with the following methods.

REC-CURRENT-ADJ2 Open The internal bias forces the DC level at pin 12 to 1/2 VCC(that is, approximately 2.5 V), and RO1 determines the recording current.

Design values RO1 = 1.5 kΩ = 16.0 mA (SP) (per channel) RO1 = 1.5 kΩ =12.7 mA (EP)

REC-CURRENT-ADJ2 Used Applying a DC control voltage between 1 and 4 V to pin 12 adjusts the figure determined by RO1 between –6.0 dB and +3.5 dB.

No. 5710-9/11

LA70011, 70011M

REC-CURRENT (mAp-p) design values

Pin 6 level - detector DC level (V)

Pin 7 level - playback output level (mVp-p)

Envelope detector voltage characteristic

EP, with 18kΩ resistor on pin 6

SP, with 18kΩ resistor on pin 6

Page 10

Note: One possible circuit for applying this voltage is the following, which provides 9 modes between 1 and 4 V.

No. 5710-10/11

LA70011, 70011M

Page 11

PS No. 5710-11/11

LA70011, 70011M

Block Diagram

This catalog provides information as of February, 1998. 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.