PC13180FC 查看數據表（PDF） - Motorola => Freescale

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PC13180FC

LOW POWER DC - 1.8 GHz LNA / MIXER and VCO

Motorola => Freescale 

2 Pin Connections

Table 13. Pin Function Description

Pin

Symbol/

Type

Equivalent Internal Circuit

1

GNDLNA

2

RFIN

1

2

RF in

3

Bias

LNA output

to balun

T/R

3

GNDLNA

1.7 mA

48 VCCLNA

48

VCC

6.8 pF

4

EPAEN

VCC

VCC

4

Sequence

Manager Control

or SPI Control

NOTE: VCC = VCCRF

Pin Connections

Description

GNDLNA, Negative supply

GNDLNA is the ground for the

LNA.

RFIN

RFIN is the RF input to the

LNA. The LNA is a bipolar

cascode design. The input is

the base of the common

emitter transistor. Minimum

external matching is required

to optimize the input return loss

and gain. The cascode output

drives the primary of an

on-chip balun single-ended.

GNDLNA, Negative supply

GNDLNA is the ground for the

LNA.

VCCLNA, Positive supply

VCCLNA is taken to the

incoming positive battery or

regulated dc voltage through a

low impedance trace on the

PCB. It is decoupled to

GNDLNA at the pin of the IC.

EPAEN

External PA enable is a digital

output which can be used to

enable an external PA. It can

be controlled via SPI or placed

under sequence manager

control. This output can also be

used to control an external T/R

switch requiring

complementary drive.

MOTOROLA

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