Product category:
Communications ICs (Wireless)
News Release from: Semtech | Subject: SX1211UHF transceiver
Edited by the Electronicstalk Editorial
Team on 30 August 2007
UHG RF transceiver boosts battery life
The SX1211 is optimised for asynchronous sensor network designs in the unlicensed industrial, scientific and medical (ISM) frequency bands.
Semtech has released the SX1211, a UHF radio frequency (RF) transceiver with the industry's lowest receiver (RX) current consumption (less than 3mA), significantly increasing battery life in wireless sensor network applications The SX1211 is optimised for asynchronous sensor network designs in the unlicensed industrial, scientific and medical (ISM) frequency bands (868-870MHz and 902-928MHz) where low RX power consumption is critical to battery life as the receiver is constantly waking up to sniff for signals
This article was originally published on Electronicstalk on 16 Jul 2001 at 8.00am (UK)
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The SX1211's RX current consumption is up to five times lower than competitive solutions, resulting in up to five years of battery life for sensor applications.
In addition to a low RX current, the device also features a 64byte FIFO buffer that enables more power-efficient batch data transfers between the transceiver and microcontroller.
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Transmit power consumption at + 10dBm is only 25mA.
With support for both frequency-shift keying (FSK) modulation and on-off keying (OOK) modulation, the SX1211 can be used for both new and legacy sensor network designs.
The device supports FSK data rates from 1.56 to 100kbit/s and OOK data rates up to 32kbit/s.
Receiver sensitivity for FSK modulation is -104dBm at 25kbit/s and for OOK is -110dBm at 2kbit/s.
"More automation and security applications are moving to RF with distributed battery powered devices, which is putting more pressure on designers to deliver longer battery life", said Rob Whittaker, Manager, ISM Wireless ProductGroup in Semtech's Advanced Communications and Sensing Business Unit.
"The SX1211 leverages 20 years of low-power RF development to deliver that battery life, along with great signal sensitivity in both FSK and OOK modulation schemes - making it an ideal choice for new or updated designs".
All major RF communication parameters are programmable and can be configured dynamically, with RF output power programmable up to +12.5dBm in eight steps.
The SX1211 operates over a supply voltage range of 2.1V to 3.6V.
It meets regulatory standards for both Europe (ETSI EN 300- 220-1) and North America (FCC parts 15.247 and 15.249), for both digital modulation (DTS) and frequency hopping systems.
The SX1211 is provided in a 5 x 5mm TQFN32 RoHS-compliant package.
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