MLX71122_16 Datasheet, PDF (10/59 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71122
300 to 930MHz FSK/FM/ASK Receiver
Datasheet
2. Pin Definitions and Descriptions
2.1. Pin Schematics
Pin No.
1
31
Name
VEELNA
LNAI
I/O Type
ground
analog
input
3
LNAO
analog
output
2
VCCANA supply
4
VEEIF
ground
5
MIXN
analog
input
6
MIXP
analog
input
7
SPISEL
CMOS
input
8
RSSI
analog
output
9
MODSEL CMOS
input
Functional Schematic
VCC
LNAI
31
bias
VEE
VEELNA
1
VEE
LNAO
3
bias
VCC
VCC
Description
ground of LNA core
LNA input, approx.
27 single-ended
LNA open-collector output,
to be connected to external
LC tank that resonates at RF
positive supply of
LNA, MIX1 MIX2, IFF, IFA,
FSK DEMOD, OA1, OA2,
PKDET+, PKDET- and BIAS
negative supply of
LNA, MIX1 MIX2, IFF, IFA,
and FSK DEMOD
mixer 1 negative input
MIXN
5
VEE
390µA
VEE
VCC
MIXP
6
mixer 1 positive input
SPI select input
SPISEL
120
7
RSSI
8
VEE
VCC
120
120
25k
VEE
VCC
I (Pi)
ASK
FSK _SW1
MODSEL
120
9
RSSI output, approx. 25k
demodulation select input
(FSK or ASK demodulation)
VEE
REVISION 014 – AUGUST, 2016
390 10 71122 01
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