Atmel Rolls Out New Low-Power RF Remote Control ASK/FSK Transceiver

9/3/2003 - Atmel® Corporation (Nasdaq: ATML) announced the availability of the new RF data control transceiver ATA5811/12. This new device is designed for automotive and other mobile Remote Keyless Entry (RKE) and Passive Entry Go (PEG) systems that will benefit from the new devices' extremely low current consumption and small size, which are mandatory requirements for small, battery-driven applications such as a car key. In addition, the new transceiver can also be used for a broad range of further transceiver RF links were low power consumption and an effective system solution are required, such as energy metering, home automation, alarm and telemetry systems.

The ATA5811 is designed for 433 to 435 and 868 to 870 MHz, whereas the ATA5812 operates at 314 to 316 MHz. Both transceivers are pin- and functionally identical. The ATA 5811/12's current consumption is both in receive and in transmit mode as low as 10.5 mA (3 V/ Tx with 5 dBm). This enables portable applications to be powered by a single Li-cell for smaller designs with extended lifetime.

This new device also exhibits excellent system performance: high sensitivity in ASK (e.g. -116.5 dBm at 2.4 kBaud) and FSK mode (e.g. -109.5 dBm at 2.4 kBaud), a PAE of nearly 40%, adjustable output power of up to +10 dBm for long-distance operation, a high selectivity and a high blocking plus low intermodulation due to the receiver module's low-IF architecture. Thanks to the transmitter module's closed-loop Fractional-N synthesizer, the transceiver features high PLL bandwidth and excellent isolation between PLL and PA.

"Since our new transceivers are bi-directional devices with half-duplex functionality, RF Remote Control systems will reach a next step of increased security and convenience." Torsten Mann, Marketing Director for Automotive and Control Products at Atmel, explains. "Imagine a PEG car system realized with these new devices. You will not need to use a key, push on a button or plug in a card to open the car and start the engine. Just touch the car's door, then the key fob/ card will wake-up, the transceiver, implemented on the PEG card, will start to communicate with the car, and the car opens. This communication between car and card will be on an extremely high security level, based on interlocked hopping codes and crypted protocols."

Samples of the transceivers ATA 5811/12 in QFN48 (7 x 7 mm) packages are available now. Pricing starts at 3.90 US$ (10 k).

ASK = Amplitude Shift Keying
FSK = Frequency Shift Keying
IF = Intermediate Frequency
Li = Lithium
PA = Power Amplifier
PAE = Power-Added Efficiency
PEG = Passive Entry Go
PLL = Phase-Locked Loop
RKE = Remote Keyless Entry About Atmel

About Atmel
Founded in 1984, Atmel Corporation is headquartered in San Jose, California with manufacturing facilities in North America and Europe. Atmel designs, manufactures and markets worldwide, advanced logic, mixed-signal, nonvolatile memory and RF semiconductors. Atmel is also a leading provider of system-level integration semiconductor solutions using CMOS, BiCMOS, bipolar SiGe, and high-voltage BCDMOS process technologies.

Atmel® and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries.

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