Single chip FSK Transceiver ML5805 from RF Parts Australia
Variable Data Rate FSK Transceiver ML5805
RF Micro Devices (RFMD), represented by RF Parts Australia , has released a single chip fully integrated frequency shift keyed (FSK) transceiver, ML5805, which is developed for a variety of applications operating in the 5.725GHz to 5.850GHz ISM band. The ML5805 is mode selectable for operation with digital cordless phones (DSSS or DECT) and higher data rate streaming applications like wireless audio and video.
The ML5805 contains a dual-conversion low-IF receiver with all channel selectivity on chip. IF filtering, IF gain, and demodulation are performed on-chip, eliminating the need for any external IF filters or production tuning. A post detection filter and a data slicer are integrated to complete the receiver.
The ML5805 uses an adjustment-free closed loop modulator, which modulates the on-chip VCO with filtered data. The ML5805 includes an up conversion mixer, a buffer/pre-driver, and a power amplifier to produce a typical output power of +21dBm. A fully integrated fractional synthesizer is used in both receive and transmit modes. Power supply regulation is included in the ML5805, providing circuit isolation and consistent performance over supply voltages between 2.8-3.6V.
The features of the ML5805 include the following:
- Selectable data rates: 576Kbps, 1.152Mbps, 1.536Mbps, 1.755Mbps, 2.048Mbps
- Fractional-N synthesizer with 30Hz resolution
- Low IF receiver eliminates external IF filters
- Fully integrated digital FIR Tx data filter, IF filters, FM discriminator, and RX data filter
- Self-calibrating VCO filters (No tuning needed)
- -97dBm sensitivity (0.1% BER) with integrated LNA
- Operating modes: DSSS-DCT, DECT, 2.048Mbps
- +21dBm output power
- Embedded wireless microcontroller
- Simple 3-wire control interface
- Outputs: TR PIN Diode or FET switch
- Analog RSSI output: 35mV/dB
- 40-pin 6x6 QFN package
The applications of the ML5805 are:
- DSSS and WDCT cordless phones
- Wireless game controllers
- Wireless headsets
- Wireless PC peripherals
- Automatic meter reading
- Security systems
- Home networking
- Telemetry
- Point-of-Sale/vending equipment
- Portable wireless data applications
25-Jun-2008