EVB71122-915-C

EVB71122-915-C Datasheet

EVB71122

Part	Datasheet
EVB71122-915-C	EVB71122-915-C (pdf)

Related Parts	Information
EVB71122-868-C	EVB71122-868-C

PDF Datasheet Preview
EVB71122 300 to 930MHz Receiver Evaluation Board Description Programmable PLL synthesizer 8-channel preconfigured or fully programmable SPI mode Double super-heterodyne receiver architecture with 2nd mixer as image rejection mixer Reception of FSK, FM and ASK modulated signals Low shut-down and operating currents AGC automatic gain control On-chip IF filter Fully integrated FSK/FM demodulator RSSI for level indication and ASK detection 2nd order low-pass data filter Positive and negative peak detectors Data slicer with averaging or peak-detector adaptive threshold 32-pin Quad Flat No-Lead Package QFN EVB programming software is available on Melexis web site Ordering Information Part No. see paragraph 6 PRELIMINARY EVB71122-315-C EVB71122-433-C EVB71122-868-C EVB71122-915-C SPI mode is default population, ABC mode according to paragraph 5 EVB71122-XXX-C with XXX = Reception frequency 315 or 915MHz . **The evaluation board is supplied with a SMA connector. Application Examples General digital and analog RF receivers at 300 to 930MHz Tire pressure monitoring systems TPMS Remote keyless entry RKE Evaluation Board Example Low power telemetry systems Alarm and security systems Active RFID tags Remote controls Garage door openers Home and building automation The MLX71122 is a multi-channel RF receiver IC based on a double-conversion super-heterodyne architecture. It is designed to receive FSK and ASK modulated RF signals either in 8 predefined frequency channels or frequency programmable via a 3-wire serial programming interface SPI . The IC is designed for a variety of applications, for example in the European bands at 433MHz and 868MHz or for the use in North America or Asia, e.g. at 315MHz, 447MHz or 915MHz. Page 1 of 32 EVB Description April/08 EVB71122 300 to 930MHz Receiver Evaluation Board Description Document Content 1 Theory of Operation 4 EVB Data Overview 4 Block Diagram 5 Enable/Disable in ABC Mode 6 Demodulation Selection in ABC 6 Programming Modes 6 Preconfigured Frequencies in ABC Mode 6 2 Functional Description Frequency 7 Calculation of Counter Settings 8 Calculation of LO1 and IF1 frequency for Low Frequency 8 Calculation of LO1 and IF1 frequency for High Frequency 9 PRELIMINARY Counter Setting Examples for SPI 9 Counter Settings in ABC Mode 8+1 Preconfigured 10 PLL Counter Ranges 11 SPI 11 General 11 Read / Write Sequences 12 Serial Programming Interface Timing 12 3 Register Description Register Overview 13 Control Word R0 15 Control Word R1 16 Control Word R2 17 Control Word R3 17 Control Word R4 18 Control Word R5 18 Control Word R6 18 Control Word R7 Read-only 19 4 Application Circuits for SPI Averaging Data Slicer Configured for Bi-Phase Codes 20 Peak Detector Data Slicer Configured for NRZ 22 Board Component Values List SPI 24 5 Application for 8-Channel Preconfigured ABC Mode Averaging Data Slicer Configured for Bi-Phase Codes 25 Board Component Values List ABC mode 27 Page 2 of 32 EVB Description April/08 EVB71122 300 to 930MHz Receiver Evaluation Board Description 6 Evaluation Board Layouts 7 Package Description

PDF Datasheet Preview

EVB71122
300 to 930MHz Receiver Evaluation Board Description
Programmable PLL synthesizer 8-channel preconfigured or fully programmable SPI mode Double super-heterodyne receiver architecture with 2nd mixer as image rejection mixer Reception of FSK, FM and ASK modulated signals Low shut-down and operating currents AGC automatic gain control On-chip IF filter Fully integrated FSK/FM demodulator RSSI for level indication and ASK detection 2nd order low-pass data filter Positive and negative peak detectors Data slicer with averaging or peak-detector adaptive threshold 32-pin Quad Flat No-Lead Package QFN EVB programming software is available on Melexis web site
Ordering Information

Part No. see paragraph 6

PRELIMINARY EVB71122-315-C

EVB71122-433-C

EVB71122-868-C EVB71122-915-C
*SPI mode is default population, ABC mode according to paragraph 5 **EVB71122-XXX-C with XXX = Reception frequency 315 or 915MHz . ***The evaluation board is supplied with a SMA connector.

Application Examples
General digital and analog RF receivers at 300 to 930MHz
Tire pressure monitoring systems TPMS Remote keyless entry RKE

Evaluation Board Example
Low power telemetry systems
Alarm and security systems
Active RFID tags
Remote controls
Garage door openers
Home and building automation

The MLX71122 is a multi-channel RF receiver IC based on a double-conversion super-heterodyne architecture. It is designed to receive FSK and ASK modulated RF signals either in 8 predefined frequency channels or frequency programmable via a 3-wire serial programming interface SPI . The IC is designed for a variety of applications, for example in the European bands at 433MHz and 868MHz or for the use in North America or Asia, e.g. at 315MHz, 447MHz or 915MHz.

Page 1 of 32

EVB Description April/08

EVB71122
300 to 930MHz Receiver Evaluation Board Description

Document Content
1 Theory of Operation
4 EVB Data Overview 4 Block Diagram 5 Enable/Disable in ABC Mode 6 Demodulation Selection in ABC 6 Programming Modes 6 Preconfigured Frequencies in ABC Mode 6
2 Functional Description

Frequency 7 Calculation of Counter Settings 8

Calculation of LO1 and IF1 frequency for Low Frequency 8 Calculation of LO1 and IF1 frequency for High Frequency 9

PRELIMINARY Counter Setting Examples for SPI 9

Counter Settings in ABC Mode 8+1 Preconfigured 10 PLL Counter Ranges 11 SPI 11 General 11 Read / Write Sequences 12 Serial Programming Interface Timing 12
3 Register Description

Register Overview 13 Control Word R0 15 Control Word R1 16 Control Word R2 17 Control Word R3 17 Control Word R4 18 Control Word R5 18 Control Word R6 18 Control Word R7 Read-only 19
4 Application Circuits for SPI

Averaging Data Slicer Configured for Bi-Phase Codes 20 Peak Detector Data Slicer Configured for NRZ 22

Board Component Values List SPI 24
5 Application for 8-Channel Preconfigured ABC Mode

Averaging Data Slicer Configured for Bi-Phase Codes 25 Board Component Values List ABC mode 27

Page 2 of 32

EVB Description April/08

EVB71122
300 to 930MHz Receiver Evaluation Board Description
6 Evaluation Board Layouts 7 Package Description

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived EVB71122-915-C Datasheet file may be downloaded here without warranties.

Datasheet ID: EVB71122-915-C 647781