News Release

- New Product Information -

2019/05/10
AKM develops RF transceiver with integrated power amplifier for Chinese ETC

Product Name
AK1555
Product Category:
Short Range RF IC
Title
5.9GHz RF Transceiver
Applications
Chinese Electronic Toll Collection system (ETC) car terminal
RF transceiver optimized for On Board Unit (OBU) compliant with GBT 20851-2007
AK1555
AK1555

Description

The proliferation of cars in China has had an increasing impact on traffic congestion and air pollution. Asahi Kasei Microdevices (AKM) has developed the RF transceiver AK1555 for use in ETC terminals in China, using RF analog circuit design and integration technology that has been proven in-vehicle.
The AK1555 has been optimized for Chinese ETC terminals, and has reduced the need for external components by integrating an amplifier. This integration also allows for a wider variety of potential ETC terminal installations.

Features

● Compatible with Chinese ETC standard GBT 20851-2007

The AK1555’s RF transmit power and receive sensitivity specifications meet the GBT 20851-2007 standard.

● Integrated power amplifier (PA) and low noise amplifier (LNA)

With the integration of over +10dBm transmit power and -75dBm (typ.) receive sensitivity amplifiers, external PAs and LNAs are eliminated.
The transmit output and receive sensitivity can be adjusted via configuration register, so the AK1555 can be used for both built-in antenna ETC and antenna-separated ETC.

● High suppression ratio characteristics to co-channel and adjacent channel waves

In Chinese ETC communication, the suppression ratio characteristics of RF transceiver are an important benchmark because the co-channel and adjacent channel signals act as disturbances to the communication channel.
The AK1555 has excellent characteristics, with a co-channel suppression ratio of 8dB (typ.) and adjacent channel suppression ratio of 8dB (typ.).

● Built-in FM0 Modem and FIFO buffer

The AK1555 is capable of switching between an interface with a built-in FM0 modem & FIFO buffer (Frame Data Mode) and an interface without a modem and buffer (Raw Data Mode).
The user may select the appropriate mode depending on the OBU architecture.

● Compatible with AEC-Q100

The AK1555 is compatible with the AEC-Q100 standard, a reliability requirement for automotive electronic components.

Main Specifications

AK1555
5.9GHz RF Transceiver
StandardGBT 20851-2007
Transmitting powerOver +10dBm with built-in power amplifier
Minimum sensitivity-75dBm with built-in low noise amplifier (typ.)
Undesired suppression ratio・Co-channel suppression ratio: 8dB (typ.)
・Adjacent channel suppression ratio: 8dB (typ.)
Modem functionFM0 modem (ASK)
・pre-amble, CRC ,post-amble can be added
Interface・FM0 modem + FIFO buffer (Frame Data Mode)
・without FM0 modem and FIFO buffer (Raw Data Mode)
Standby modeFunction to start the microcomputer only when the signal from ETC gate is detected
Power supply3.15 to 3.45V
Operation temperature-40 to 85°C
AEC-Q100Available
Package32-pin QFN (5.0 x 5.0mm, 0.5mm pitch)
[Notes]
* Information on this page is current on the date of press release.
* AKM is a trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

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