TH71112(2001) 데이터 시트보기 (PDF) - Melexis Microelectronic Systems

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TH71112
(Rev.:2001)

868/915MHz FSK/FM/ASK Receiver

Melexis Microelectronic Systems  

TH71112

868/915MHz

FSK/FM/ASK Receiver

Pin No. Name

21 RSSI

I/O Type

analog

output

22 VEE_BIAS ground

23 OUTP

analog

output

24 OUTN

analog

25 VEE_RO

26 RO

ground

analog

input

27 VCC_PLL supply

28 ENRX

digital

input

Functional Schematic

RSSI

21

50Ω

I (Pi)

36k

Description

RSSI output, for RSSI and

ASK detection, approx.

36kΩ output impedance

OUTP

OUTN

23

24

50Ω

20µA

50k

RO

26

30p

30p

ground for general bias

system and OA

FSK/FM positive output,

output impedance of

100kΩ to 300kΩ

FSK/FM negative output,

20µA

output impedance of

100kΩ to 300kΩ

ground of dividers, PFD and

RO

RO input, Colpitts type

oscillator with internal feed-

back capacitors

ENRX

1.5k

28

positive supply of RO, DIV,

PFD and charge pump

mode control input

(CMOS Input)

29 LF

analog

output

LF

200Ω

29

400Ω

4p

30 VEE_LNA ground

32 VCC_LNA supply

charge pump output and

VCO1 control input

LNA biasing ground

positive supply of LNA

biasing

TH71112 Data Sheet

3901071112

Page 7 of 20

Nov. 2001

Rev. 005

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