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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 Definition and Description

Pin No. Name

1 VREF

I/O Type

analog

output

Functional Schematic

VREF

1

60k

Description

reference voltage output,

approx. 1.23V

2 VEE_LNAC ground

3 GAIN_LNA analog

input

5k

IN_LNA

42

GAIN_LNA

3

400Ω

OUT_LNA

4

ground of LNA core

(cascode)

VEE_LNAC

2

LNA gain control (CMOS

input with hysteresis)

4 OUT_LNA analog

output

5k

IN_LNA

42

OUT_LNA

4

LNA open-collector output,

to be connected to external

LC tank that resonates at RF

VEE_LNAC

2

5 VEE_LNA ground

6 IN_MIX1

analog

input

IN_MIX1

6

7 CAP_MIX1 analog I/O

CAP_MIX1

7

LNA biasing ground

MIX1 input, approx. 33Ω

13Ω

single-ended

13Ω

500µA

40µA

330Ω

connection for MIX1 block-

ing capacitor

Datasheet Rev 2.3 July 2001

Page 5 of 22

www.melexis.com

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