Sanyo LA75676V-S Specifications

Ordering number : ENN6277

22802TN (OT) No. 6277-1/13

Overview

The LA75676V-S is an NTSC intercarrier VIF/SIF IC that
adopts a semi-adjustment-free structure. In particular, it
uses VCO adjustment to make AFT adjustment
unnecessary and thus simplifies the overall adjustment
process. A PLL-based technique is adopted for FM
detection. The 5 V supply voltage provides compatibility
with other multimedia systems. In addition it achieves
high audio quality by incorporating a built-in buzz
canceller that suppresses Nyquist buzz.

Functions

[VIF]

• VIF amplifier • PLL detector • RF AGC• EQ amplifier

• AFT • IF AGC • Buzz canceller
[SIF]

• Limiter amplifier • PLL FM detector

Features

• No AFT or SIF coils are used, thus eliminating
adjustments.

• Excellent audio performance due to the built-in buzz
canceller.

•VCC= 5 V and a low power dissipation of 250 mW.

Package Dimensions

unit: mm

3175B-SSOP24

1

7.6

7.8

0.5

5.6

0.1

1.5max

24

0.65

0.22

(0.33)

0.15

(1.3)

SANYO: SSOP24 (275 mil)

[LA75676V-S]

LA75676V-S

SANYO Electric Co.,Ltd. Semiconductor Company

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

VIF/SIF IF Signal-Processing Circuit

for TV and VCR Products

Monolithic Linear IC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

100

0

200

300

400

500

600

–20 0 20 40 60 70 80 100

Pd max — Ta

When mounted on a 114.3 × 76.1 × 1.6 mm3 glass epoxy printed circuit board

Ambient temperature, Ta — °C

Allowable power dissipation, Pdmax — W

No. 6277-2/13

LA75676V-S

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 6 V

Circuit voltage V13, V17 V

CC

V

I6 –3 mA

Circuit current I10 –10 mA

I14 –2 mA
Allowable power dissipation Pd max Ta ≤ 70°C, *: Mounted on a PCB. 400 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –55 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C

*: Stipulated PCB: 114.3 x 76.1 x 1.6 mm3, glass epoxy printed circuit board

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

5 V

Operating 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 33 41 49 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 32 38 44 dBµV

AGC range G

R

58 63 dB

Maximum allowable input V

IN

max 95 100 dBµV
No-signal video output voltage V6 3.5 3.8 4.1 V
Sync signal tip voltage V6 tip 0.9 1.2 1.5 V
Video output level V

O

1.7 2.0 2.3 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 beating 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 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 28 40 52 mV/kHz
VIF input resistance R

IN

45.75 MHz 1.5 kΩ

VIF input capacitance C

IN

45.75 MHz 3 pF

APC pull-in range (U) f

PU

1.3 2.0 MHz

APC pull-in range (L) f

PL

–2.0 –1.4 MHz
AFT tolerance frequency 1 dfa 1 –150 0 +150 kHz
VCO 1 maximum variability range (U) dfu 1.5 2.0 MHz
VCO 1 maximum variability range (L) dfl –2.0 –1.5 MHz
VCO control sensitivity B 1.3 2.7 5.4 kHz/mV

Electrical Characteristics at Ta = 25°C, VCC= 5.0 V, fp = 45.75 MHz

Continued on next page.

No. 6277-3/13

LA75676V-S

Continued from preceding page.

Note: If a wider FM detector output dynamic range is desired, insert a resistor and a capacitor in series between pin 23 and ground to adjust the level.

Pin Assignment

Parameter Symbol Conditions

Ratings

Unit

min typ max

[SIF Block]

Limiting sensitivity Vli (lim) 39 45 51 dBµV
FM detection output voltage V

O

(FM) 4.5 MHz ± 25 kHz *

1

400 520 660 mVrms
AMR rejection ratio AMR 50 60 dB
Total harmonic distortion THD 0.3 0.8 %
SIF signal-to-noise ratio S/N (FM) 59 64 dB

4.5 MHz output level Vsout SIF IN 80 dBµV 87 94 101 dBµV

SIF INPUT

BIAS FILTER

SIF OUT

1

2

3

24

FM DET OUT

23

FM FILTER

22

BPF-OUT

4

NC

5

V

CC

VIDEO OUT

6

LA75676V-S

EQ FILTER

EQ INPUT

APC FILTER

VIDEO DET OUT

VCO COIL

VCO COIL AFT OUT

7

8

9

10

11

12 13

21

RF AGC VR

20

GND

19

VIF INPUT

18

VIF INPUT

17

1st AGC FILTER

16

2nd AGC FILTER

15

2nd AGC FILTER

14

RF AGC OUT

Top view

A13264

Internal Equivalent Circuit and External Circuits

No. 6277-4/13

LA75676V-S

SAW(P

)

+

+

+

VCO
COIL

5.6kΩ

330Ω

150Ω

2.2kΩ

330Ω

10kΩ

-

B

300Ω

1kΩ

1kΩ

1kΩ

1kΩ

1kΩ

1kΩ

120kΩ

120kΩ

1.8kΩ

2kΩ

30kΩ

1kΩ10kΩ

500Ω

100Ω

10kΩ

200Ω

9.2kΩ

1.2kΩ

1.2kΩ

1kΩ

1kΩ 1kΩ

4.7kΩ

2.2kΩ

200Ω

10kΩ

4kΩ

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9 10 11 12

1µF

0.47µF

1µF

0.01µF

VIDEO

OUT

0.01µF

0.01µF

1µF

0.047µF

0.01µF

330pF

0.01µF

0.01µF

AUDIO

OUTPUT

RFAGC

VR

RF AGC

OUTPUT

IF

INPUT

GND

R

BPF

AFT

OUTPUT

V

CC

V

V

V

V

1V

4.5MHz

A13265

Note: Resistor R must have a value of 560 Ω or larger.