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SM5320A Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc

Part # SM5320A
Description  5-channel Video Buffer with Built-in wideband LPF
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM5320A Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc

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SM5320A
SEIKO NPC CORPORATION —1
5-channel Video Buffer with Built-in wideband LPF
OVERVIEW
The SM5320A is a 5-channel video buffer with built-in 5th-order lowpass filters. The HD block lowpass filter
cutoff frequency range can adjust from 4.10MHz to 42.7MHz*1 by 256 steps. 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 reduces video DAC aliasing
and external noise and can drive up to 300
Ω terminating resistance. The cutoff frequency and signal input type
can be controlled using an I2C-BUS*2, and the I2C slave address can be set by ADS (3-state input) to allow up
to three SM5320A on the same bus. The output gain can be varied in the range of 0dB
± 2.1dB (max step:
0.15dB) for each Y/C block and HD block individually using the I2C-BUS.
*1. When the resistor connected to ISET (RISET) is 1.8kΩ.
*2. I2C-BUS is a registered trademark of NXP B.V.
FEATURES
I
Supply voltages
• Analog: 4.75 to 5.25V
• Digital: 3.0 to 5.5V
I
Lowpass filter with adjustable cutoff frequency
(256 steps) (CH-1 to CH-3)
• Cutoff frequency range: 4.10MHz to 42.7MHz
(RISET = 1.8kΩ)
I
Filter bypass mode function for display specifica-
tions up to SXGA resolution (CH-1 to CH-3)
• Passband: 80MHz (typ)
I
Half fc mode switch function suitable for compo-
nent signals (CH-2, CH-3)
I
Video input pins can be independently set to sync-
tip clamp/bias inputs (CH-1 to CH-3)
I
Filter passband (
± 1.5dB): 6MHz (CH-Y/C)
I
Up to 300
Ω terminating resistance drive capability
I
Output gain: 0dB
± 2.1dB (max step: 0.15dB)
I
Power-down function
≤ 500µA current consumption when power-down
I
I2C-BUS interface control
• Slave address: 48h, 49h, or 4Ah
(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 VSOP
APPLICATIONS
I
HDTVs
I
LCD TVs
I
PDPs
I
Projectors
ORDERING INFORMATION
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
Device
Package
SM5320AV
28-pin VSOP
1
15
14
28
CIN
YIN
VCC4
VDD
SDA
SCL
GND6
VCC5
NC
ISET
GND1
IN3
IN2
IN1
ADS
REF
GND2
OUT1
VCC1
OUT2
GND3
OUT3
VCC2
GND4
YOUT
VCC3
COUT
GND5
0.675TYP
9.8 ± 0.2
0.22 - 0.05
+ 0.1
0.12 M
0.10
0.15 − 0.05
+ 0.1
0.65
0 to 10 °


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