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SM5302A Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc

Part No. SM5302A
Description  3-channel Video Buffer with Built-in wideband LPF
Download  26 Pages
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Maker  NPC [Nippon Precision Circuits Inc]
Homepage  http://www.npc.co.jp/en
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SM5302A Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc

 
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SM5302A
NIPPON PRECISION CIRCUITS INC.—1
3-channel Video Buffer with Built-in wideband LPF
OVERVIEW
The SM5302A is a 3-channel video buffer with built-in 5th-order lowpass filters. The lowpass filter cutoff fre-
quency range can be linearly controlled from 4.8MHz to 43MHz*1. The lowpass filter supports 480i to 1080i
format, video signal equipment analog input/outputs. For video input systems, the device functions as a next-
stage ADC system anti-aliasing filter. For video output systems, the filter removes video DAC aliasing and
external noise and can drive a maximum of two 75
Ω terminated loads. The cutoff frequency, signal input type,
and output gain switching can be controlled using an I2C*2 control bus, and the I2C slave address can be set by
ADS (3-state input) to allow a maximum of three devices to be used simultaneously.
*1. When the resistor connected to ISET (RISET) is 1.8kΩ.
*2. I2C BUS is a registered trademark of Philips Electronics N.V.
FEATURES
I
Supply voltages
• Analog: 4.75 to 5.25V
• Digital: 3.0 to 5.5V
I
Lowpass filter with linearly adjustable cutoff fre-
quency (256 values)
• Cutoff frequency range: 4.8MHz to 43MHz
(RISET = 1.8kΩ)
I
Filter bypass mode function for display specifica-
tions up to SXGA resolution
• Passband: 80MHz (typ)
I
Half fc mode switch function (CH-2, CH-3) suit-
able for digital component signals
I
2-system input multiplexer function
(switchable using I2C or MUXSEL input)
I
Video input pins can be independently set to sync-
tip clamp/bias/direct inputs
I
Maximum two 75
Ω terminated load drive capability
I
Output gain switching: 0dB/6dB
I
Disable function
≤ 300µA current consumption when disabled
I
Output sag compensation circuit built-in
I
I2C interface control
• Slave address: 90h, 92h, or 94h (up to three
devices can be used simultaneously, selected by
ADS input)
• Data transfer rate: Fast mode (up to 400kbit/s)
I
Operating ambient temperature range: 0 to 70
°C
I
Package: 28-pin HSOP
APPLICATIONS
I
HDTVs
I
LCD TVs
I
PDPs
I
Projectors
ORDERING INFORMATION
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
Device
Package
SM5302AS
28-pin HSOP
VCC2
1
GND1
OUT1B
OUT1A
REF3
REF2
REF1
VDD
SDA
MUXSEL
OUT2A
OUT2B
GND2
VCC3
OUT3A
OUT3B
GND3
IN3B
IN2B
IN3A
IN2A
ISET
VSS
ADS
IN1B
IN1A
SCL
VCC1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1.3TYP
0.8
18.6 ± 0.3
5.15
0.35 ± 0.05
0.10
0.12 M
0.15 − 0.05
+ 0.1
0 to 10 °


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