Features • Fully Integrated TX/RX with 2.9 GHz TX VCO for 5.8 GHz Applications Using a Frequency Doubler • Supply Voltage Range 3.4V to 4.6V • TX Preamplifier with 0 dBm Output Power at 2.9 GHz • Ramp-signal Generator for Power Ramping and Power Control of External SiGe Power 2.9/5.8 GHz WDCET/ISM Single-chip Transceiver Amplifier • Fast Settling Synthesizer (1.728 MHz Channel Spacing at 5.8 GHz) • Supports Multiple Reference Clocks (10.368 MHz/13.824 MHz) Benefits • • • • • Extended Battery Operating Time Low Current Consumption Very Small 7 × 7 mm Package Few Low Cost External Components No Mechanical Tuning Required ATR2808 1. Description The ATR2808 is an RF IC for low-power applications in the 5.8 GHz ISM band. The QFN 48-packaged IC is a complete transceiver including image rejection mixer, IF amplifier, FM demodulator, baseband filter, RSSI, TX preamplifier, power-ramping generator for power amplifiers, integrated synthesizer, fully integrated VCO and gaussian data filter for TX. Figure 1-1. Summary Block Diagram DEMOD MIXER IF_IN OUT IF_TANK IF AMP 1 IR MIXER CF TANK IF AMP 2 RF_IN BB_OUT DEMOD BB FILTER RAMP_OUT RAMP_SET RAMP GEN D/A RAMP D/A DEMOD DAC RSSI RSSI GF VCO TX / RX SWITCH TX_DATA PC PD f TX_OUT 3-WIRE BUS CLOCK DATA ENABLE CTRL LOGIC RX_ON TX_ON PU_RX/TX PU_PLL :n TX DRIVER VCO REG AUX REG RC CP VREG_VCO VS_VCO VREG VS_REG OLE GND_VCO PU_REG REG_CTRL VTUNE f :n CP LD REF_CLK I_CPSW Rev. 4693ES–DECT–03/06 Note: This is a summary document. A complete document is available under NDA. For more information, please contact your local Atmel sales office. 2. Ordering Information Extended Type Number Package Remarks ATR2808-PLQ QFN 48 Taped and reeled 3. Package Information 2 ATR2808 4693ES–DECT–03/06 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. 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