The ATR2820 fully-integrated one-chip 5.8 GHz transceiver ATR2820 has been designed using Atmel's advanced SiGe BICMOS process and combines low power consumption and high frequency. The new device contains a fully-integrated low-IF receiver, VCO, PLL, and a transmit output with 3 dBm output power. It is extremely flexible and can be programmed via a 3-wire serial bus to integrate with any cordless telephone baseband available on the market as well as standard microcontrollers for gaming and other consumer applications. The ATR2820's high data-rate capability (1.152 Mbit/s) allows the support of up to six handsets, using the standard DECT protocol via the same base station, or more than six game pads with a game controller.
The ATR7040 power amplifier boosts the power to the optimum of 25 dBm with a supply voltage of 3.6V. Taking into consideration the lack of an antenna filter and the transmit/receive switch of 2 dB, the coverage distance is about 1600 ft (typically, in free space). The output power can be increased by applying a higher supply voltage.
The new chipset provides excellent technical performance at the lowest manufacturing cost, two key issues in the consumer electronics market. The extremely low current consumption (the average RF module consumes 26.5 mA with one voice link active) allows cordless phone manufacturers to save cost by using smaller capacity batteries. Also, the bill of materials, and thus system costs, are low because very few external components are needed to complete a cordless phone design. The new RF chipset is very production friendly -- no software or mechanical tuning is needed. Simple ISM applications using the ATR2820 as a stand-alone device can be realized on a small 2-layer printed circuit board.
Pricing and Availability
Samples of the ATR2820 in QFN32 (5 x 5 mm) and the ATR7040 PA in QFN16 (3 x 3 mm) packages are available now with pricing starting at US $5.70 for 10k piece quantities.
Footnote
IF = Intermediate Frequency
PA = Power Amplifier
PLL = Phase-Locked Loop
SiGe = Silicon Germanium Technology
VCO = Voltage-Controlled Oscillator
About Atmel
Atmel is a worldwide leader in the design and manufacture of microcontrollers, advanced logic, mixed-signal, nonvolatile memory and radio frequency (RF) components. Leveraging one of the industry's broadest intellectual property (IP) technology portfolios, Atmel is able to provide the electronics industry with complete system solutions. Focused on consumer, industrial, security, communications, computing and automotive markets, Atmel ICs can be found Everywhere You Are(R).
NOTE: Atmel(R), logo and combinations thereof, Everywhere You Are(R) and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.
Information
Product information on Atmel's SiGe transceiver IC ATR2820 and the
high-gain PA ATR7040 may be retrieved at:
http://www.atmel.com/dyn/products/product_card.asp?family_id=660&family_name=C
ordless+Phone+ICs&part_id=4078 (ATR2820)
http://www.atmel.com/dyn/products/product_card.asp?family_id=660&family_name=C
ordless+Phone+ICs&part_id=4077 (ATR7040)
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