Applications Information

POWER SUPPLIES

While the pins of the TP3060 family are well protected

against electrical misuse it is recommended that the stan-

dard CMOS practice be followed ensuring 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

present 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 01 mF supply decou-

pling capacitors should be connected from this common

possible

For best performance the ground point of each CODEC

FILTER on a card should be connected to a common card

ground in ‘‘STAR’’ formation rather than via a ground bus

Note

See Application Note 370 for further details

Typical Asynchronous Application

TLH5070 – 5

Note 1

R2

Note 2

R4

FIGURE 4

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