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TH7110

315/433MHz FSK/FM/ASK Double-Conversion Superheterodyne Receiver

Melexis Microelectronic Systems  

TH7110

315/433MHz FSK/FM/ASK

Double-Conversion Superheterodyne Receiver

Pin No. Name

22 IN_MIX2

I/O Type

analog

input

23 VCO2_E

analog

output

24 VCO2_B

analog

input

25 VCC_BIAS supply

26 OUT_OA

analog

output

Functional Schematic

IN_MIX2

22

VCO2_B

840Ω

840Ω

20µA

VCC

VCC

47k

24

VEE

VCC

VCO2_E

23

VEE

VCC

VCO2_B

VCC

47k

24

VEE

VCC

VCO2_E

23

VEE

OUT_OA

50Ω

26

Description

external LO2 input port of

MIX2, approx. 1kΩ single-

ended

VCO2 output, emitter of a

bipolar transistor

VCO2 input, base of a bipo-

lar transistor

positive supply of general

bias system and OA

OA output, 40uA current

drive capability

27 OAN

analog

input

OAN

50Ω

27

negative OA input, input

20µA

voltage limited to approx. 0.7

Vpp between pins OAP and

OAN

Datasheet Rev 2.3 July 2001

Page 8 of 22

www.melexis.com

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