ETC5064 STMicroelectronics, ETC5064 Datasheet - Page 14

• Manufacturer Part Number: ETC5064
• Description: POWER AMPLIFIER SERIAL INTERFACE CODEC/FILTERWITH RECEIVE
• Manufacturer: STMicroelectronics

ETC5064 - ETC5064-X - ETC5067 - ETC5067-X
APPLICATION INFORMATION
Figure 4 : Typical Asynchronous Application.
POWER SUPPLIES
While the pins at the ETC506X family are well pro-
tected against electrical misure, it is recommended
that the standard CMOS practice be followed, en-
suring that ground is connected to the device before
any other connections are made. In applications
where the printed circuit board may be plugged into
a ”hot” socket with power and clocks already pre-
sent, an extra long ground pin in the connector
should be used.
All ground connections to each device should meet
at a common point as close as possible to the GNDA
pin. This minimizes the interaction of ground return
currents flowing through a common bus impedance.
0.1 F supply decoupling capacitors should be con-
nected from this common ground point to VCC and
VBB as close to the device as possible.
For best performance, the ground point of each
CODEC/FILTER on a card should be connected to
a common card groundin star formation, rather than
via a ground bus. This common ground point should
be decoupled to VCC and VBB with 10 F capaci-
tors.
For best performance, TSx should be grounded if
not used.
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