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TH71101

315/433MHz FSK/ASK Receiver

Melexis Microelectronic Systems  

TH71101

315/433MHz

FSK/ASK Receiver

Pin No. Name

21 RSSI

I/O Type

analog

output

22 VEE_BIAS ground

23 OUTP

analog

output

24 OUTN

analog

output

25 VEE_RO

26 RO

ground

analog

input

27 VCC_PLL supply

28 ENRX

digital

input

Functional Schematic

RSSI

21

I (Pi)

50Ω

36k

OUTP

OUTN

23

24

50Ω

20µA

20µA

50k

RO

26

30p

30p

ENRX

1.5k

28

Description

RSSI output, for RSSI and

ASK detection, approx.

36kΩ output impedance

ground of general

bias system and OA

FSK positive output, output

impedance of 100kΩ to

300kΩ

FSK negative output, output

impedance of 100kΩ to

300kΩ

ground of DIV, PFD, RO

and charge pump

RO input, Colpitts type

oscillator with internal feed-

back capacitors

positive supply of DIV, PFD,

RO and charge pump

mode control input,

CMOS-compatible with

internal pull-down circuit

29 LF

analog I/O

LF

29

30 VEE_LNA ground

32 VCC_LNA supply

200Ω

400Ω

4p

39010 71101

Rev. 018

Page 8 of 21

charge pump output and

VCO1 control input

ground of LNA biasing

positive supply of

LNA biasing

Data Sheet

Jun/13

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