MLX71121CLQ-AAA-000-TU

MLX71120 300 to 930MHz FSK/FM/ASK Receiver Features Application Examples Dual RF input for antenna space and Tire pressure monitoring systems frequency diversity, LNA cascading or (TPMS) differential feeding Remote keyless entry (RKE) Fully integrated PLL-based synthesizer Remote controls nd 2 mixer with image rejection Home and building automation Reception of ASK or FSK modulated Alarm and security systems signals Low power telemetry systems Wide operating voltage and Garage and gate controls temperature ranges General-purpose RF receivers at 300 to Very low standby current consumption 930MHz Low operating current consumption External IF filter for 455kHz or 10.7MHz Pin Description Internal FSK demodulator Average or peak detection data slicer bottom top mode RSSI output with high dynamic range for RF level indication LNAI1 RSSI Output noise cancellation filter VEE CINT LNAO1 VCC MCU clock output MIXP PDN MLX71120 MIXN PDP High over-all frequency accuracy LNAO 2 SLC VEE DFO 32-pin Quad Flat No-Lead Package LNAI 2 DF1 (QFN) Ordering Code Product Code Temperature Code Package Code Option Code Packing Form Code MLX71120 K LQ AAA-000 RE MLX71120 K LQ AAA-000 TU Legend: Temperature Code: K for Temperature Range -40C to 125C Package Code: LQ for QFN Packing Form: RE for Reel, TU for Tube Ordering example: MLX71120KLQ-AAA-000-RE General Description The MLX71120 is a highly-integrated single-channel/dual-band 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 receivers extended temperature and supply voltage ranges make the device a perfect fit for automotive or similar applications where harsh environmental conditions can occur. REVISION 009 - JUNE 16, 2017 3901071120 VCC LNASEL MIXO RFSEL VEE IFAP DTAO IFAN CLKO MODSEL IFSEL SLCSEL DF2 ROIMLX71120 300 to 930MHz FSK/FM/ASK Receiver Contents Features ..................................................................................................................................................... 1 Application Examples ................................................................................................................................. 1 Pin Description ........................................................................................................................................... 1 Ordering Code ............................................................................................................................................ 1 General Description ................................................................................................................................... 1 1. Theory of Operation ............................................................................................................................... 4 1.1. General................................................................................................................................................ 4 1.2. Technical Data Overview.................................................................................................................... 4 1.3. Block Diagram ..................................................................................................................................... 5 1.4. Operating Modes................................................................................................................................ 6 1.5. LNA Selection ...................................................................................................................................... 6 1.6. Mixer Section ...................................................................................................................................... 7 1.7. IF Amplifier .......................................................................................................................................... 7 1.8. PLL Synthesizer ................................................................................................................................... 7 1.9. Reference Oscillator ........................................................................................................................... 8 1.10. Clock Output ..................................................................................................................................... 8 1.11. FSK Demodulator.............................................................................................................................. 8 1.12. Baseband Data Path ......................................................................................................................... 9 1.13. Data Filter ....................................................................................................................................... 10 1.14. Data Slicer ....................................................................................................................................... 10 1.14.1. Averaging Detection Mode ...................................................................................................... 11 1.14.2. Peak Detection Mode .............................................................................................................. 11 1.15. Data Output and Noise Cancellation Filter ................................................................................... 12 2. Frequency Planning .............................................................................................................................. 13 2.1. Calculation of Frequency Settings ................................................................................................... 14 2.2. Standard Frequency Plans ............................................................................................................... 15 2.3. 433/868MHz Frequency Diversity ................................................................................................... 15 3. Pin Definitions and Descriptions ........................................................................................................... 16 4. Technical Data ...................................................................................................................................... 20 4.1. Absolute Maximum Ratings ............................................................................................................. 20 4.2. Normal Operating Conditions .......................................................................................................... 20 4.3. DC Characteristics ............................................................................................................................ 21 REVISION 009 - JUNE 16, 2017 3901071120