SM5307C Datasheet, PDF (8/12 Pages) Nippon Precision Circuits Inc – 3-channel Video Buffer

SM5307C
FUNCTIONAL DESCRIPTION
Filter Select and Filter-bypass Mode
The SM5307C is mounted the 5th-order lowpass filter (LPF), and is possible to use changing four modes of
SD1, SD2, HD and filter-bypass mode for corresponding to input video signal. The filter mode changes with
the FC1 and FC2 pins.
Control pins
FC1
FC2
L
L
H
L
L
H
H
H
Filter mode
SD1 mode
SD2 mode
HD mode
Filter-bypass mode
Filter passband (typ)
CH-1
CH-2
CH-3
6.75MHz 6.75MHz 6.75MHz
13.5MHz 13.5MHz 13.5MHz
30MHz
30MHz
30MHz
80MHz
80MHz
80MHz
Input Multiplexer
The SM5307C is mounted the two input multiplexer for each channels. The MUXSEL pin selects the input
signals.
Control pin
MUXSEL
L
H
CH-1
IN1A
IN1B
Selected input
CH-2
CH-3
IN2A
IN3A
IN2B
IN3B
Disable Mode Function
The SM5307C has the disable mode function. When DISABLE pin set to “H”, The SM5307C operation
becomes disable mode. In disable mode operation, current consumption becomes up to 2.5mA and video signal
input and output pins are setting high-impedance.
Control pin
DISABLE
L
H
SM5307C operation
Normal operation
Disable mode
SEIKO NPC CORPORATION —8