User's Manual

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4.5 Connector Sealing in Harsh Environments
If the 9522A is to be used in a harsh environment with exposure to high
humidity or water, the mating of the multi-interface connector must be
further sealed to protect from moisture entry. It is recommended that a
bead of RTV silicone sealant be placed on the connector mating to the
9522A’s multi-interface connector where shown in Figure 6 below. A
material similar to Permatex 16B should be used.
Figure 6: Place a bead of Silicone RTV material along this area all
around the connector mating to the 9522A’s multi-interface connector.
5 Environmental
The environmental specifications of the 9522A are summarized in Table
3 below.
Table 3: Environmental Specifications
6 Electrical Interfaces
The subsections to follow contain interface information for the electrical
interfaces of the 9522A.
6.1 DC Power Interface
6.1.1 DC Power Interface Signal Descriptions
The DC power interface is comprised of the DC power inputs and a
control signal as summarized in Table 4 below. The EXT_PWR and
GND inputs are used to supply DC power to the 9522A. The
EXT_ON_OFF control input is pulled to a GND level to toggle the 9522A
on and off. Note that both pairs of pins should be connected for EXT
PWR and EXT GND.
Table 4: Control/Audio Interface Signal Descriptions
Signal Name Signal Description
EXT_PWR (pin 4 and 16) External power +4.4VDC input
EXT_GND (pin 3 and 17) External power GND input
EXT_ON_OFF (pin 1) Power on/off control input
Parameter Value
Operating Temperature Range -20°C to + 60°C
Operating Humidity Range
≤75% RH
Storage Temperature Range -40°C to + 85°C
Storage Humidity Range
≤93% R
62425_user_guide 3/23/06 1:55 PM Page 5