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MLX71120 Datasheet, PDF (1/30 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver | |||
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MLX71120
300 to 930MHz
FSK/FM/ASK Receiver
Features
 Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding
 Fully integrated PLL-based synthesizer
 2nd mixer with image rejection
 Reception of ASK or FSK modulated signals
 Wide operating voltage and temperature ranges
 Very low standby current consumption
 Low operating current consumption
 External IF filters 455kHz or 10.7MHz
 Internal FSK demodulator
 Average or peak detection data slicer mode
 RSSI output with high dynamic range for RF level indication
 Output noise cancellation filter
 MCU clock output
 High over-all frequency accuracy
 32-pin Quad Flat No-Lead Package (QFN)
Ordering Information
PRELIMINARY Part Number
MLX71120
Temperature Code
K (-40 °C to 125 °C)
Package Code
LQ (32 L QFN 5x5 Quad)
Delivery Form
73 pc/tube
5000 pc/T&R
Application Examples
 General digital and analog RF receivers
at 300 to 930MHz
 Tire pressure monitoring systems (TPMS)
 Remote keyless entry (RKE)
Pin Description
top
bottom
LNAI1
RSSI
 Low power telemetry systems
 Alarm and security systems
 Active RFID tags
 Remote controls
VEE
LNAO1
MIXP
MIXN
LNAO2
VEE
MLX71120
CINT
VCC
PDN
PDP
SLC
DFO
 Garage door openers
LNAI2
DF1
 Home and building automation
General Description
The MLX71120 is a multi-band, single-channel/dual-channel RF receiver based on a double-conversion
super-heterodyne architecture. It can receive FSK and ASK 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, e.g. at 315MHz or 915MHz. It is also well-suited for narrow-band applications
according to the ARIB STD-T67 standard in the frequency range 426MHz to 470MHz.
The receiverâs extended temperature and supply voltage ranges make the device a perfect fit for automotive
or similar applications where harsh environmental conditions are expected.
39010 71120
Rev. 005
Page 1 of 30
Data Sheet
Feb/08
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