SM5320A NPC [Nippon Precision Circuits Inc], SM5320A Datasheet - Page 19

• Manufacturer Part Number: SM5320A
• Description: 5-channel Video Buffer with Built-in wideband LPF
• Manufacturer: NPC [Nippon Precision Circuits Inc]

USAGE PRECAUTIONS
Slave Address (4Ah) Setting
When slave address 4Ah is used, the ADS input must be left open circuit. In this case, an external resistor
should be connected as shown in figure 3 to reduce the risk of malfunction in the I
large external spikes or other noise invaded from outside. The recommended value is 10kΩ.
Power Supply Invest Timing
The SM5320A uses 2-type power supply, analog one (VCC1, VCC2, VCC3, VCC4, VCC5) and digital one
(VDD). Therefore all power supply pins should be forced voltage at the same time power supply invested. In
the case analog power supply and digital one are set up separately, composing system the time-lag to makes
short time as standard under 1ms is need. And if voltage of digital power supply comes higher than one of ana-
log power supply, it is necessary to set voltage of digital power supply to make potential difference bellow
250mV as compared with voltage of analog one.
Figure 3. Slave address 4Ah setting
10k
10k
Slave address = 4Ah
SM5320A
VDD
ADS
GND
SEIKO NPC CORPORATION —19
2
C-BUS interface due to