What is ams' IC used in a small wearable scanner?
Published2015.10.07 18:18First up is the compact and lightweight Bluetooth® RAIN (UHF) RFID reader called the 1153, which measures 10.2cm x 5.5cm x 5.6cm and weighs just 157g and comes with a palm strap.
Therefore, it can be easily worn on the user's hand or other objects, and can also be attached as an anchor point to a tablet computer.
And its long battery life makes it convenient for retail, healthcare, data tracking, laundry, and delivery workers.
The main limitations faced by the 1153 Leader development team during design were performance, size, and power consumption.
The ams AS3993 reader IC selected by Technology Solutions is housed in a 7mm x 7mm QFN48 package. It operates from a low supply voltage of 2.7V and is compatible with the 1,130mAh lithium polymer battery in the 1153 reader. In normal mode, the AS3993 draws just 65mA.
Designers at Technology Solutions have been striving to integrate a complete RFID reader into a wearable form factor. The high integration of the AS3993 enabled them to overcome design limitations. The AS3993 integrates an RF front-end and RFID protocol control circuitry, enabling a complete EPC Class 1 Gen2 RFID system to be implemented simply by adding an external 8-bit microcontroller.
At 1153, the AS3993 provides read and write capabilities for ISO18000-6C UHF transponders. The AS3993 also includes support for ISO18000-6A/B in transponder mode.
With selectable receive sensitivity down to -90dBm and an integrated power amplifier and 20dBm transmit power (output), the AS3993 provides the 1153 with a very wide link budget for robust performance even in challenging operating conditions. The 1153 is specified with a read range of up to 2m and a write range of up to 1m.
“We chose the AS3993 because our requirements for efficient Read performance with very low power consumption were a clear justification for choosing the ams AS3993,” said Dr. David Evans, Managing Director of Technology Solutions.
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