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Transceiver has embedded LDO

Posted: 22 Aug 2008     Print Version  Bookmark and Share

Keywords:transceiver IC  transmission distance  FSK transceiver  working frequency 

AMIC Communication Corp. (AMICCOM) has introduced A7125, a 2Mbps data rate and 2.4GHz transceiver IC with an ideal transmission distance within 50m. The new device is an ultra low power wireless FSK transceiver with working frequency 2400~2483MHz ISM band.

Users just need to set up one register to change working frequency. Integrating the design of Multi Channels (∼40) and Clear Channel Indication, frequency hopping is easy to implement. The control interface of A7125 is SPI, through SPI, it is easy to program TX power, Read/Write FIFO, access 8-bit Digital RSSI, data rate and etc. The deivce's unique Strobe Command is used to control A7125 built-in State Machine, users just need to send single command via SPI for packet transmission.

A7125 has embedded LDO, its operating range is from 2.0V to 3.6V, TX power could be set from -10dBm to 3dBm with high Rx sensitivity -90 dBm. If data rate is programmed to only 1Mbps, the Rx sensitivity could be lower than -92dBm. In addition, AMICCOM could support reference design of A7125+External PA (20dBm/10dBm) for longer distance applications.

A7125 has not only features of self-calibration mechanism, but also supports operation options of Auto RSSI Measurement, Data Whitening, Packet Correction (FEC and CRC), high precision clock output for MCU crystal sharing, FIFO mode and Direct Mode. A7125 has no SAW filter and Balun required for module design but only few external passive components needed. Users can also consider A7125 built-in thermal sensor, battery detector and 8bits ADC for flexible applications.

A7125 is the best choice of short range wireless data/audio/video streaming. Based on 2Mbps data rate plus lower power architecture, A7125 is very tie-in with Baby Monitor, Wireless Earphone/Speaker, Wireless Mice/ Keyboard, Home Security, RF remote control, Game Pad and Toys.

From market segment point of view, A7125's RX sensitivity is better than commercial ones. This chip not only combines advantages with other competitor's 2.4GHz RF ICs, but also supports four kinds of low cost crystals (6M/8/12M/16M). Based on its unique cost structure, A7125 could be a suitable choice for huge wireless applications in high performance, low power consumption and low cost targets.

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