PC8178 datasheet(4/27 Pages) CEL

4 / 27 page

PIN CONNECTIONS

Pin No.

Pin Name

INPUT

GND

OUTPUT

GND

(Top View)

(Bottom View)

VCC

PIN EXPLANATION

No.

Name

Applied

Voltage

(V)

Voltage

(V)

Note

Function and Applications

Internal Equivalent Circuit

INPUT

−

0.90

Signal input pin. A internal

matching circuit, configured with

resisters, enables 50

Ω connection

over a wide band. This pin must

be coupled to signal source with

capacitor for DC cut.

GND

−

Ground pin. This pin should be

connected to system ground with

minimum inductance. Ground

pattern on the board should be

formed as wide as possible.

All the ground pins must be con-

nected together with wide ground

pattern to decrease impedance

defference.

OUTPUT

Voltage

as same

as VCC

through

external

inductor

−

Signal output pin. This pin is de-

signed as collector output. Due to

the high impedance output, this pin

should be externally equipped with

LC matching circuit to next stage.

For L, a size 1 005 chip inductor

can be chosen.

VCC

2.4 to 3.3

−

Power supply pin. This pin should

be externally equipped with bypass

capacitor to minimize its

impedance.

Note Pin voltage is measured at VCC = 3.0 V.

Data Sheet PU10063EJ02V0DS

µPC8178TK

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