EVB71122 Datasheet, PDF(1/32 Page) Melexis Microelectronic Systems – 300 to 930MHz Receiver Evaluation Board Description

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EVB71122 Datasheet, PDF (1/32 Pages) Melexis Microelectronic Systems – 300 to 930MHz Receiver Evaluation Board Description

EVB71122

300 to 930MHz Receiver

Evaluation Board Description

Features

! 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

! Build-in acceptance of input frequency variations

! 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)

! EVB programming software is available on Melexis web site

Ordering Information

Part No. (see paragraph 6)

PRELIMINARY EVB71122C-315-C

EVB71122C-433-C

EVB71122C-868-C

EVB71122C-915-C

Note: SPI mode is default population, ABC mode according to paragraph 4.2

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

General Description

The MLX71122 is a multi-channel RF receiver IC based on a double-conversion super-heterodyne architec-

ture. 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.

39012 71122 01

Rev. 001

Page 1 of 32

EVB Description

Sept/06

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