UM2455是一颗符合IEEE802.15.4标准的2.4G无线收发器.为了适应更多客户和市场的需求.UBEC推出两颗不同的芯片.UM2460和UZ2400D,特点描述如下:
1， 针对ZigBee等组网或相对高端应用,我们推荐UZ2400D,特点如下：
ISM band 2.405~2.480 GHz operation
IEEE 802.15.4-2006 specification compliance
-95 dBm sensitivity and 3 dBm max. input level
Integrated RSSI ADC and I/Q DACs
Integrated DC-DC converter
High receiver and RSSI dynamic range
1M/2M bps turbo mode supported
Low current consumption, 16 mA in RX and
17.5 mA in TX mode
2.4 uA deep sleep mode
Small 40-pin leadless QFN 6x6 mm2 package
Hardware CSMA-CA mechanism, automatic
ACK response and FCS check
􀂉Programmable ‘Superframe’ construction
􀂉Functionally independent TX FIFOs, including
Hardware security engine (AES-128)
2， 针对简单的点对点或点对多点无线传输应用,我们推荐UM2460，特点如下
Worldwide 2.4GHz ISM band operation
-95/-83/-80 dBm sensitivity @ 250k/1M/2M
On-chip DC-DC converter
16 mA RX and 15 mA TX at 250k bps mode
3.5 uA at deep sleep mode
1 uA at power down mode
Multiple data rates of 250Kbps/1Mbps/2Mbps
24-pin leadless QFN 4x4 mm2 package
Various power saving modes
Simple four-wire SPI interface

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