sm5307b Seiko NPC Corp., sm5307b Datasheet - Page 8

• Manufacturer Part Number: sm5307b
• Description: 3-channel Video Buffer
• Manufacturer: Seiko NPC Corp.

FUNCTIONAL DESCRIPTION
Filter Select and Filter-bypass Mode
The SM5307A 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.
Input Multiplexer
The SM5307A is mounted the two input multiplexer for each channels. The MUXSEL pin selects the input
signals.
Disable Mode Function
The SM5307A has the disable mode function. When DISABLE pin set to “H”, The SM5307A operation
becomes disable mode. In disable mode operation, current consumption becomes up to 2mA and video signal
input and output pins are setting high-impedance.
FC1
H
H
L
L
Control pins
Control pin
Control pin
DISABLE
MUXSEL
H
H
L
L
FC2
H
H
L
L
CH-1
IN1A
IN1B
SM5307A operation
Filter-bypass mode
Normal operation
Selected input
Disable mode
Filter mode
SD1 mode
SD2 mode
HD mode
CH-2
IN2A
IN2B
CH-3
IN3A
IN3B
SM5307A
6.75MHz
13.5MHz
80MHz
30MHz
CH-1
Filter passband (typ)
3.375MHz
6.75MHz
15MHz
80MHz
CH-2
3.375MHz
6.75MHz
15MHz
80MHz
CH-3
SEIKO NPC CORPORATION —8