TH71221 datasheet(8/44 Pages) MELEXIS

tên linh kiện	TH71221

Giải thích chi tiết về linh kiện	FSK/FM/ASK Transceiver

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TH71221

27 to 930MHz

FSK/FM/ASK Transceiver

39010 071221

Page 8 of 44

Data Sheet

Rev. 009

Nov/15

Pin No.

Name

I/O Type

Functional Schematic

Description

FS0/SDEN

input

frequency select input / seri-

al data enable input

VEE_DIG

ground

ground of serial port and

control logic

FS1/LD

input /

output

frequency select input / lock

detector output

VCC_PLL analog I/O

VCO open-collector output,

connection to VCC or exter-

nal LC tank

TNK_LO

analog I/O

VCO open-collector output,

connection to external LC

tank

analog I/O

charge pump output, con-

nection to external loop filter

VEE_PLL

ground

ground of PLL frequency

synthesizer

PS_PA

analog I/O

power-setting input

OUT_PA

output

power amplifier open-

collector output

FS0/SDEN

VEE

VCC

120

VEE

VCC

FS1/LD

120

VEE

VCC_PLL

VCC

VEE

VCOCUR

6.3pF

VEE

TNK_LO

120

6.5k

VCC

VEE

VCC

120

PS_PA

10µA

VEE

VCC

OUT_PA

20p

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