SANYO LA7415 Datasheet

Monolithic Linear IC

No. 5647

VHS VCR Playback Head and Record Amplifiers

Overview

The LA7415 is a record and playback amplifier IC for
VHS format VCR decks. In combination with a Sanyo
LC7420 or LA7430 Series video signal processing IC, the
LA7415 can provide an adjustment-free Y/C record
current.

Features

• Record amplifier: Provides stable recording
characteristics using a fixed-current drive technique that
is resistant to load variations.

• REC-AMP: Includes a built-in AGC circuit.

• Can use the same printed circuit board as the LA7411.

LA7415

Package Dimension

unit: mm

3061-DIP30S

[LA7415]

SANYO: DIP30S

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Allowable power dissipation Pd max Ta ≤ 65 °C 650 W
Operating temperature Topr –10 to +65 °C
Storage temperature Tstg –40 to +150 °C

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Supply voltage V
Operating voltage range V

max 7.0 V

CC

CC

op 4.8 to 5.5 V

CC

5.0 V

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

43097HA(OA) No. 5647-1/12

LA7415

Electrical Characteristics at Ta = 25°C

Ratings

Parameter Symbol Conditions

Input Output T2 T4 T5

[Playback Mode]

Current drain I

SP L CH1 VG

Voltage gain

SP H CH2 VG
EP L CH3 VG

EP H CH4 VG
Voltage gain differential 1 ∆VG
Voltage gain differential 2 ∆VG
Inter-mode gain difference ∆

Equivalent input CH2 V
noise voltage CH3 V

CH1 V

CH4 V

CCP

1 T20A T10A OPEN 0 0 54.0 57.0 60.0 dB

P

2 T23A T10A

P

3 T27A T10A

P

4 T30A T10A OPEN 5.0 2.5 56.0 59.0 62.0 dB

P

1– –VGP1 – VGP2––––10+1dB

P

2– –VGP3 – VGP4––––10+1dB

P

VG

NIN
NIN
NIN
NIN

––VGP3 – VGP1–––123dB

P EP-SP

1 T20A T10A
2 T23A T10A
3 T27A T10A
4 T30A T10A OPEN 5.0 2.5 – 1.1 1.5 µVrms

CH1 ∆Vfp1 T20A T10A
Frequency CH2 ∆Vfp2 T23A T10A
characteristics CH3 ∆Vfp3 T27A T10A

CH4 ∆Vfp4 T30A T10A

CH1 V
Second harmonic CH2 V
distortion CH3 V

CH4 V

CH1 V
Maximum CH2 V
output level CH3 V

CH4 V

1 T20A T10A

HDP

2 T23A T10A

HDP

3 T27A T10A

HDP

4 T30A T10A

HDP

1 T20A T10A

OMP

2 T23A T10A

OMP

3 T27A T10A

OMP

4 T30A T10A OPEN 5.0 2.5 1.0 1.2 – Vp-p

OMP

T15: 5.0 V, T13: OPEN, TRCK HA SW30
T7: OPEN MUTE

Pin 15 influx current OPEN 0 0 24 30 36 mA

= 38 mVp-p,

V

IN

f = 1 MHz

After the 1.1-MHz LPF
V

OUT

VG

1, 2, 3, 4

P

V

= 38 mVp-p

IN

f = 7 MHz

V

OUT

1, 2, 3, 4 output ratio

VG

P

V

= 38 mVp-p

IN

f = 4 MHz
(8-MHz component)/(4-MHz component)

output ratio

f = 1 MHz
The output level when the third
harmonic in the output is –30 dB

OPEN 0 2.5 54.0 57.0 60.0 dB
OPEN 5.0 0 56.0 59.0 62.0 dB

OPEN 0 0 – 1.1 1.5 µVrms
OPEN 0 2.5 – 1.1 1.5 µVrms
OPEN 5.0 0 – 1.1 1.5 µVrms

OPEN 0 0 –2.5 0 – dB
OPEN 0 2.5 –2.5 0 – dB
OPEN 5.0 0 –2.5 0 – dB
OPEN 5.0 2.5 –2.5 0 – dB
OPEN 0 0 – –40 –35 dB
OPEN 0 2.5 – –40 –35 dB
OPEN 5.0 0 – –40 –35 dB
OPEN 5.0 2.5 – –40 –35 dB
OPEN 0 0 1.0 1.2 – Vp-p
OPEN 0 2.5 1.0 1.2 – Vp-p
OPEN 5.0 0 1.0 1.2 – Vp-p

T23A T10A OPEN 0 0 – –40 –35 dB

CH1 V
Crosstalk SP T30A T10A
(Note 1) T20A T10A

CH2 V

1 T27A T10A

CR

2 T27A T10A

CR

V

= 38 mVp-p,

IN

f = 4 MHz

V

OUT

1, 2

VG

P

OPEN 0 0 – –40 –35 dB
OPEN 0 0 – –40 –35 dB
OPEN 0 2.5 – –40 –35 dB

OPEN 0 2.5 – –40 –35 dB
T30A T10A OPEN 0 2.5 – –40 –35 dB
T23A T10A OPEN 5.0 0 – –40 –35 dB

CH3 V
Crosstalk EP T30A T10A
(Note 1) T20A T10A

CH4 V

3 T27A T10A

CR

4 T27A T10A

CR

V

= 38 mVp-p,

I

f = 4 MHz

V

OUT

3, 4

VG

P

OPEN 5.0 0 – –40 –35 dB
OPEN 5.0 0 – –40 –35 dB
OPEN 5.0 2.5 – –40 –35 dB
OPEN 5.0 2.5 – –40 –35 dB

T30A T10A OPEN 5.0 2.5 – –40 –35 dB

∆V

1 – T10 CH1-CH2

ODC

∆V

2 – T10 CH3-CH4

ODC

∆V

3 – T10 CH1-CH3

Output DC OPEN 5.0 0 –100 0 +100 mV
offset

ODC

∆V

4 – T10 CH2-CH4

ODC

∆V

5 – T10 CH1-CH4

ODC

∆V

6 – T10 CH2-CH3

ODC

OPEN – 0 –100 0 +100 mV
OPEN 0 2.5 –100 0 +100 mV
OPEN – 0 –100 0 +100 mV
OPEN 5.0 2.5 –100 0 +100 mV
OPEN 0 – –100 0 +100 mV

OPEN 0 – –100 0 +100 mV
OPEN 5.0 2.5 –100 0 +100 mV
OPEN 0 0 –100 0 +100 mV
OPEN 5.0 2.5 –100 0 +100 mV
OPEN 0 2.5 –100 0 +100 mV
OPEN 5.0 0 –100 0 +100 mV

Note 1. With the input inductor L (8.2 µH) shorted.

Since the T4 (HA) control switch timing is synchronized with T6 (H-Sync), a T6 trigger (0 - 5 V - 0) must be input before measuring each of these items.

2.

min typ max

Continued on the next page.

Unit

No. 5647-2/12

LA7415

Continued from the preceding page.

Parameter Symbol Conditions

Input Output T2 T4 T5

T15: 5.0 V, T13: OPEN, TRCK HA SW30
T7: OPEN MUTE

Enveloped detector
output pin voltage

Enveloped detector
voltage SP1 T10A: Adjusted to 300 mV p-p

Enveloped detector
voltage SP2 T10A: Adjusted to 600 mV p-p

Enveloped detector
voltage EP1 T10A: Adjusted to 200 mV p-p

Enveloped detector
voltage EP2 T10A: Adjusted to 450 mV p-p

Comparator
output voltage 1 The T3 DC voltage

Comparator
output voltage 2 The T3 DC voltage

Playback mode on switching
transistor on resistance

Playback mode
mode switching

transistor on
resistance

Trick 1 threshold
level

Trick 2 threshold
level

HAPB threshold
level

SW30 threshold
level

[Record Mode]

Current drain I
AGC amplifier

output level
Inter-mode gain

difference
AGC amplifier control

characteristics 1
AGC amplifier control

characteristics 2
AGC amplifier frequency

characteristics

AGC amplifier second
harmonic distortion

AGC amplifier maximum
output level

AGC amplifier muting
attenuation

V

ENV

V

ENVSP1

V

ENVSP2

V

ENVEP1

V

ENVEP2

V

COMP1

V

COMP2

R

17 P-17

PON

18 P-18

R

PON

21 P-21 OPEN 5.0 – – 4.0 6.0 Ω

R

PON

R

24 P-24

PON

26 P-26

R

PON

29 P-29 OPEN 0 – – 4.0 6.0 Ω

R

PON

T8 The T8 DC voltage with no input OPEN 0 0 0 0.4 0.8 V

T20A T8

T20A T8

T27A T8

T27A T8

T20A T3

T20A T3

f = 4 MHz

f = 4 MHz

f = 4 MHz

f = 4 MHz

f = 4 MHz, V

f = 4 MHz, V

= 38 mVp-p

IN

= 38 mVp-p

IN

The difference in the DC measurement
for 1-mA and 2-mA influx currents

The difference in the DC measurement
for 1-mA and 2-mA influx currents

TR1-1 T2 Normal → Trick1 * – – 3.2 – 5.0 V
TR1-2 T2 Trick1 → Normal * – – 1.2 – 2.8 V
TR2-1 T2 Normal → Trick2 * – – 0.0 – 0.8 V
TR2-2 T2 Trick2 → Normal * – – 1.2 – 2.8 V
HAP-1 T4 SP → EP – * – 1.8 – 5.0 V

HAP-2 T4 EP → SP – * – 0.0 – 1.4 V
SW30-1 T5 Lch → Hch – – * 1.2 – 5.0 V
SW30-2 T4 Hch → Lch – – * 0.0 – 0.8 V

T15: 5.0 V, T2: OPEN, REC HA SW30
T6: 5.0 V, T7: 5.0 V Adj2 MUTE

The pin 15 influx current OPEN 0 0 44 55 66 mA
f = 4 MHz

V

= 200 mVp-p

IN

RSP/VREP

f = 4 MHz, V
The output level/V

f = 4 MHz, V
The output level/V

f = 1 MHz, 7 MHz, VIN= 100 mVp-p
The 7 MHz/1 MHz output ratio

f = 4 MHz, V

= 400 mVp-p

IN

RSP, EP

= 100 mVp-p

IN

RSP, EP

= 200 mVp-p

IN

The (8 MHz component)/(4 MHz component)
output ratio

f = 4 MHz, The output level for which
the second harmonic is –35 dB

f = 4 MHz, VI = 200 mVp-p
The output level/V

RSP, EP

∆
∆
∆
∆

∆V
∆V

∆V
∆V

V
V

∆VG

V

AGC

V

AGC

V

AGC

V

AGC

∆V

∆V

∆V
∆V

CCR

RSP
REP

FRS
FRE

HDRS

HDRE

OMRS
OMRE

MRS
MRE

T11A T21A
T11A T26A

––V

R

1-SP

T11A T21A

1-EP

T11A T26A

2-SP

T11A T21A

2-EP

T11A T26A
T11A T21A
T11A T26A

T11A T21A
T11A T21A
T11A T21A

T11A T26A
T11A T21A
T11A T26A

ratio

ratio

ratio

Ratings

min typ max

Unit

OPEN 0 0 2.1 2.6 3.1 V

OPEN 0 0 4.5 4.8 5.0 V

OPEN 5.0 0 2.0 2.6 3.0 V

OPEN 5.0 0 4.5 4.8 5.0 V

5.0 0 0 – 0.4 0.7 V

5.0 5.0 0 4.5 4.8 – V

– – – – 4.0 6.0 Ω
– – – – 4.0 6.0 Ω

OPEN 5.0 – – 4.0 6.0 Ω
OPEN 0 – – 4.0 6.0 Ω

T2 T4 T5

OPEN 0 0 147 156 165 mVp-p
OPEN 5.0 0 116 123 130 mVp-p

– – – 1.30 2.05 2.80 dB

OPEN 0 0 – 0.5 1.0 dB
OPEN 5.0 0 – 0.5 1.0 dB
OPEN 0 0 –1.0 –0.5 – dB
OPEN 5.0 0 –1.0 –0.5 – dB
OPEN 0 0 –1.0 –0.0 +1.0 dB
OPEN 5.0 0 –1.0 –0.0 +1.0 dB

OPEN 0 0 – –45 –40 dB
OPEN 5.0 0 – –45 –40 dB

Adj. 0 0 20 22 – mAp-p

Adj. 5.0 0 20 22 – mAp-p
OPEN 0 5.0 – –45 –40 dB
OPEN 5.0 5.0 – –45 –40 dB

Continued on the next page.

No. 5647-3/12

Continued from the preceding page.

Parameter Symbol Conditions

[Record Mode]

LA7415

Input Output T2 T4 T5

T15: 5.0 V, T2: OPEN, REC HA SW30
T6: 5.0 V, T7: 5.0 V Adj2 MUTE

Ratings

min typ max

Unit

AGC amplifier
relative cross
modulation level

Record mode
mode switching
transistor on
resistance

HA record
threshold level

Record MUTE
threshold level

Record/playback
threshold level

Notes 3. Measure with a DC voltage of about 1.8 V applied to the AGC detector filter pin (pin 12) and with the AGC amplifier gain fixed.

4. Adjust the output level by applying a DC voltage to T13 (REC CUR.Adj2)

5. Use a resistor with a ±1.0% tolerance between pins 14 and 15.

∆V

∆V

R
R
R
R
R
R

HAR-1 T4 SP → EP – *–1.8 – 5.0 V

HAR-2 T4 EP → SP – *–0.0 – 1.4 V
MUTE-1 T5 MUTE OFF → ON – – * 3.4 – 5.0 V
MUTE-2 T5 MUTE ON → OFF – – * 0.0 – 3.0 V

SW REC/PB

T10A T21A

CYS

T11A T26A

CYE

17 P-17 OPEN 5.0 – – 4.0 6.0 Ω

RON

18 P-18

RON

21 P-21

RON

24 P-24

RON

26 P-26 OPEN 0 – – 4.0 6.0 Ω

RON

29 P-29 OPEN 0 – – 4.0 6.0 Ω

RON

T10A: f = 629 kHz, VIN= 360 mVp-p
T11A: f = 4 MHz, VIN= 200 mVp-p
(4 MHz ±629 kHz)/(4 MHz)
output ratio

The difference in the DC
measurement for 1-mA
and 2-mA influx currents

T7: control voltage – – – 2.2 – 5.0 V

OPEN 0 0 – –45 –40 dB

OPEN 5.0 0 – –45 –40 dB

OPEN 0 – – 4.0 6.0 Ω
OPEN 5.0 – – 4.0 6.0 Ω
OPEN 5.0 – – 4.0 6.0 Ω

Usage Notes

1. Control Pin Logic

RF SW, REC MUTE: pin 5

Record/playback mode switching: pin 7

Playback mode
If the pin 5 DC voltage is < 1.0 V: Lch
If the pin 5 DC voltage is > 1.0 V: Hch
Record mode
If the pin 5 DC voltage is < 3.2 V: Muting will be off
If the pin 5 DC voltage is > 3.2 V: Muting will be on

If the pin 7 DC voltage is < 2.0 V: Playback mode
If the pin 7 DC voltage is > 2.0 V: Record mode

No. 5647-4/12