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參數(shù)資料
| 型號： | SM5302AS |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | 3-channel Video Buffer with Built-in wideband LPF |
| 中文描述： | 3通道視頻緩沖器，具有內(nèi)置的寬帶低通濾波器 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大?。?/td> | 503K |
| 代理商： | SM5302AS |
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
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
terminated loads. The cutoff frequency, signal input type,
and output gain switching can be controlled using an I
C
ADS (3-state input) to allow a maximum of three devices to be used simultaneously.
*1.When the resistor connected to ISET (R
ISET
) is 1.8k
.
*2.I
C BUS is a registered trademark of Philips Electronics N.V
*1
. The lowpass filter supports 480i to 1080i
2
*2
control bus, and the I
2
C slave address can be set by
2
FEATURES
I
Supply voltages
Analog: 4.75 to 5.25V
Digital: 3.0 to 5.5V
Lowpass filter with linearly adjustable cutoff fre-
quency (256 values)
Cutoff frequency range: 4.8MHz to 43MHz
I
(R
ISET
=
1.8k
)
I
Filter bypass mode function for display specifica-
tions up to SXGA resolution
Passband: 80MHz (typ)
Half fc mode switch function (CH-2, CH-3) suit-
able for digital component signals
2-system input multiplexer function
(switchable using I
C or MUXSEL input)
Video input pins can be independently set to sync-
tip clamp/bias/direct inputs
Maximum two 75
terminated load drive capability
Output gain switching: 0dB/6dB
Disable function
≤
300
μ
A current consumption when disabled
Output sag compensation circuit built-in
I
C 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)
Operating ambient temperature range: 0 to 70
Package: 28-pin HSOP
I
I
2
I
I
I
I
I
I
2
I
°
C
I
APPLICATIONS
I
HDTVs
LCD TVs
PDPs
Projectors
I
I
I
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
7
9
18.6 ± 0.3
5.15
0.35 ± 0.05
0.10
0.12 M
0
2
0
0.15
0.05
0 to 10 °
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