SM5301AS

NIPPON PRECISION CIRCUITS INC.—1

3-channel Video Buffer with Built-in Wideband Filters

OVERVIEW

The SM5301AS is a video buffer with built-in video signal bandwidth lowpass filter. The filter employs a 5-

order Butterworth lowpass filter configuration. The filter characteristics have been optimized for minimal over-

shoot and flat group delay, it has a variable cutoff frequency and guaranteed driver-stage channel gain differ-

ence and phase difference values.

FEATURES

I

Supply voltage: 5V

± 10%

I

VESA-standard ATSC digital TV RGB/YUV

video filters

I

2-system input/1-system output switching analog

multiplexer function

I

DC voltage level restore sync clamp function

I

Output buffer gain switching function: 0, 6dB

(input-to-output AC signal gain)

I

Channel-to-channel gain difference: 0.5dB (

± 5%

supply voltage variation)

I

Channel-to-channel phase difference: 3.5 degree

I

Output signal harmonic distortion (all channels):

1.5%

I

Cutoff frequency: 5.8 to 37MHz variable

I

Package: 28-pin HSOP (Pb free)

APPLICATIONS

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Set-top boxes

I

Digital television

I

DVD players

I

Projector

ORDERING INFORMATION

PINOUT

(Top view)

PACKAGE DIMENSIONS

(Unit: mm)

Device

Package

SM5301AS

28-pin HSOP

MUXSEL

1

SYNCIN

2

VCC4

3

4

GSR1

5

6

NC

7

8

GSG1

9

10

NC

11

12

28

27

26

25

24

23

22

21

20

19

18

17

VFC

RFC

GND4

VCC1

GND1

VCC2

GND2

VCC3

GND3

13

14

16

15

GSB1

DISABLE

NC

GND

GND

1.3TYP

18.6 ± 0.3

0.8

5.15

0.35 ± 0.05

0.10

0.15 – 0.05

+ 0.1

0 to 10