Automotive ICs MLX71121 300 to 930MHz FSK/FM/ASK Receiver Bus ICs IR Temperature • Input frequency ranges: 300 MHz to 470 MHz 610 MHz to 930 MHz • Power supply range: 2.1 V to 5.5 V • Temperature range: -40 °C to +125 °C • Standby current: 50 nA • Operating current: 10.0 mA to 11.1 mA • FSK Input Sensitivity: -107 dBm (433 MHz) • ASK Input Sensitivity: -112 dBm (433 MHz) • Internal IF: 1.8 MHz with 300 kHz 3 dB bandwidth • FM/FSK deviation range: ±10 kHz to ±100 kHz • Maximum data rate: 100 kbps NRZ, 50 kbps bi-phase code • Image rejection: 65 dB 1st IF (with external RF front-end filter) 25 dB 2nd IF (internal image rejection) • Spurious emission: < -54 dBm • Linear RSSI range: > 60 dB • MCU clock frequency: 2.0 MHz to 3.4 MHz CMOS Imaging Technical Data Overview Silicon MEMS • Internal FSK demodulator • Average or peak detection data slicer mode • RSSI output with high dynamic range for signal strength indication • Output noise cancellation filter • MCU clock output • High over-all frequency accuracy • 32 pin Quad Flat No-Lead (QFN 5x5 Quad) RF&RFID • Dual RF input for antenna and frequency diversity, LNA cascading or diff. feeding • Fully integrated PLL-based synthesizer • 2nd mixer with image rejection • Reception of ASK or FSK modulated signals • Wide operating voltage and temperature range • Very low standby current consumption • Low operating current consumption • Internal IF Filter Intelligent Drivers and Actuators Features Hall ICs The MLX71121 is a multi-band, single-channel RF receiver based on a double-conversion super-heterodyne architecture. It can receive FSK and ASK modulated signals. The IC is designed for general purpose applications for example in the European bands at 433MHz and 868MHz or for similar applications in North America or Asia, e.g. at 315MHz or 915MHz. The receiver’s extended temperature and supply voltage ranges make the device a perfect fit for automotive or similar applications where harsh environmental conditions are expected. 14 2 17 SEQ RFSEL PFD VCO 31 LF 30 PKDET _ 25 PDN 21 OA2 DIV 8 CP ENRX 26 20 PDP SW2 RO BIAS 28 15 SLCSEL 7 N2 counter CLKO Hall ICs N1 counter PKDET+ 100k LNA2 VEE TEST NCF DTAO 29 CINT 22 19 23 Applications • • • • • General digital and analog data receiving Tire Pressure Monitoring Systems (TPMS) Remote Keyless Entry (RKE) Wireless access control Low-power telemetry systems • • • • • Home and building automation Alarm and security systems Garage door openers Remote controls Active RFID tags Application Circuits VCC RCL XTAL CLKO RFSEL output XTAL CX VCC ROI 25 TEST 26 CLKO 28 IFSEL 27 DTAO 29 ENRX 30 32 RFSEL 31 7 VEE 8 LNAI2 9 FSK ASK 32L QFN 5x5 6 LNAO2 10 11 12 SLC 19 13 14 15 16 Dual-Channel Application FSK ASK CB1 CP2 CB2 CP1 DFO 18 DF1 17 CF2 CB0 CF3 PDP 20 DF2 16 C6 PDN 21 MLX71121 SLCSEL 15 4 MIXP 5 MIXN IFAN 14 VCC 22 MODSEL DF2 13 CF1 3 LNAO1 IFAP SLCSEL 12 CF2 Bus ICs CP1 RSSI 24 CINT 23 VEE MODSEL 11 CB1 CB3 RSSI CRS 2 VEE MIXO IFAN 10 DF1 17 C4 CB2 C5 1 LNAI1 VCC ROI 25 TEST 26 CLKO 28 IFAP 9 CP2 DFO 18 VEE C9 LNAI2 SLC 19 MIXO 7 VEE CF3 PDP 20 32L QFN 5x5 6 LNAO2 8 PDN 21 L2 VCC C6 DTAO 29 VCC 22 5 MIXN C3 RSSI 24 3 LNAO1 MLX71121 antenna 1 CRS 2 VEE 4 MIXP VCC CB3 RSSI CINT 23 VCC C4 C5 1 LNAI1 ENRX 30 32 C3 L2 RFSEL 31 CX antenna 1 CF1 VCC RCL CLKO ENRX RFSEL LNASEL Silicon MEMS FSK/ASK VCC output ENRX FSK/ASK IFSEL 27 Intelligent Drivers and Actuators FSK DEMOD LO2 ROI LNAI2 8 LO1 18 SW1 IFA 100k IFF MIX2 MIX1 FSK DFO OA1 SLC LNA1 100k 1 VCC LNAI1 32 RF&RFID 100k 100k ASK LNASEL CMOS Imaging 16 DF2 24 DF1 27 13 RSSI 12 IFSEL 11 VEE 10 MIXO 9 VCC MIXP 5 MIXN 4 MODSEL VEE 6 LNAO2 3 LNAO1 Automotive ICs Block Diagram CB0 Single-Channel Application Email Europe and rest of the world: [email protected] Email USA : [email protected] For additional information go to our website at: Email Asia: [email protected] Sept. 2007 IR Temperature Disclaimer: Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical lifesupport or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services. © 2006 Melexis NV. All rights reserved.