MLX71121_15 Datasheet, PDF (1/29 Pages) Melexis Microelectronic Systems – FSK/OOK Receiver

MLX71121
300 to 930MHz
FSK/OOK Receiver
Features
 Two RF inputs for antenna diversity, LNA cascading or differential feeding
 Integrated IF filter
 Integrated FSK and OOK demodulator
 Fully integrated PLL-based synthesizer
 Wide operating voltage
 Very low standby current consumption
 Low operating current consumption
 Average and peak detection data slicer mode
 Analog RSSI output with high dynamic range
 Noise cancellation filter
 MCU clock output
 High frequency accuracy
 32-pin QFN package
Ordering Code
Product Code
MLX71121
Temperature Code
K
Package Code
LQ
Option Code
AAA-000
Legend:
Temperature Code:
Package Code:
Packing Form:
Ordering example:
K for Temperature Range -40°C to 125°C
LQ for QFN
RE for Reel
MLX71121KLQ-AAA-000-RE
Packing Form Code
RE
Application Examples
 Automotive RKE
 TPMS
 Smart metering (AMR)
 Home and building automation
 Consumer remote controls
 Alarm and security systems
 Low power telemetry systems
 Garage and door openers
Pin Description
top
bottom
LNAI1
VEE
LNAO1
MIXP
MIXN
LNAO2
VEE
LNAI2
MLX71121
RSSI
CINT
VCC
PDN
PDP
SLC
DFO
DF1
General Description
The MLX71121 is a highly-integrated single-channel/dual-band RF receiver based on a double-conversion
super-heterodyne architecture. It can receive FSK and OOK modulated signals. The IC is designed for gen-
eral purpose applications for example in the European bands at 433MHz and 868MHz or for similar applica-
tions in North America or Asia, for example at 315MHz or 915MHz.
39010 71121
Rev. 012
Page 1 of 29
Data Sheet
Mar/15