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| OVERVIEW DATA SHEET: BT2577 2.4GHz RF TRANSCEIVER Features * * * * * * * 2.4GHz ISM Band RF Transceiver ETS 300 328 Air Interface complies with FCC Part 15 Rules Power Management for Minimizing Supply Current Power Supply 3.0V + 10% Power Control for TX tranmission Operating Temperature: -40C to +85C General Description The BT2577 is a high-performance transceiver for worldwide 2.4GHz ISM band applications. It includes on-chip features such as the LNA, Modulator / Demodulator, RF VCO, image-rejection mixer and upconversion mixer. The receiver section of the BT2577 contains a Low Noise Amplifier (LNA), a downconverter (image rejection mixer), IF AMP, Limiter, FM demodulator, data slicer, RSSI, and RF Voltage Control Oscillator (VCO). The receiver is designed to require a minimal number of external components and pin count for cost effectiveness. The transmitter section will share the same RF VCO with the receiver, but also includes FSK modulator, upconverter, and power amplifier. The transmitter also requires minimal external components for reducing mass production cost. Since there is no IF or RF PLL included on the BT2577, the design engineer can choose the most appropriate RF-IF PLL to use based upon their unique system power consumption, cost and performance requirements. Keeping the PLL Synthesizer separate from the rest of the RFIC Transceiver also makes it possible to accomplish lower noise, and higher peformance designs, due to the improved isolation between the high and low frequency synthesizer sections and the RX and TX signal conversion chains. TRFIC SH EE T www.betheltronix.com Page 1 of 4 R Functions * Receiver: Low Noise Amplifier (LNA) w/ Gain Control Image Reject RF Mixer RSSI GFSK Demodulator FM (analog)/FSK (digital) output Transmitter: FM/FSK Modulator Upconversion Mixer Power Amplifier with Power Control (9 dBm/ 16dBm) RFICs for 850 - 2400MHz * * * * * 2.4GHz ISM Band Applications Wireless local loop subscriber unit BluetoothTM wireless application products HomeRF TM wireless application products PR Ordering Information BT2577 2.4GHz RF Transceiver BTI, 13825 Cerritos Corporate Dr., Cerritos CA. 90703, U.S.A. Tel (562) 407-0500 Fax (562) 407-0510 sales@betheltronix.com EL I March 9, 2001 M IN A Applications BTI Confidential & Proprietary Information R Y * RF VCO D A TA BT2577 Block Diagram 2.4GHz RF TRANSCEIVER Tx/Rx: 2400-2483.5MHz IF=260MHz BW=1MHz BT2577 DFC22R44P084LHA Mixer Image-Reject Filter Tank LNA IF AMP Limiter RFICs for 850 - 2400MHz Rx: 2.4~2.4835GHz RF VCO RF PLL FM Demodulator Rx/Tx: 2120-2203.5MHz FM Modulator TA Tx: 2.4~2.4835GHz D A TRFIC PR EL I March 9, 2001 M IN A R Y Power Amplifier LNA R Mixer 260MHz BTI Confidential & Proprietary Information SH EE T Discriminator RSSI Data Slicer Rx Data_OUT LPF & ANT. SW Data Slicer_OUT RSSI_OUT IF PLL TxData_IN Gaussian LPF Page 2 of 4 BT2577 Absolute Maximum Ratings Parameters Supply voltage Storage temperature Value 3.0 + 10% -40 to 85 2.4GHz RF TRANSCEIVER Unit V oC Parameter Power supply voltage (Vcc) Min 2.7 Typ 3.0 18.7 31.6 19.8 17.4 Max 3.3 Unit V mA mA mA mA SH EE T Remarks Remarks Remarks Electrical Characteristics Note RFICs for 850 - 2400MHz Power supply current (Rx): Power supply current (Tx): - High power (16dBm) mode: - Low power (9dBm) mode: Power supply current (RFVCO): TX SPECIFICATIONS Parameter Min 2400 Typ 2442 16 9 Max D A Unit Design Specifications TA Note General RF Frequency RF Output Power High Power Mode Low Power Mode DC Current High Power Mode Low Power Mode TRFIC Y R M IN A Min R 31.6 19.8 Typ 2484 MHz dBm dBm mA mA EL I Parameter RX SPECIFICATIONS Max Unit Note General PR RF Frequency IF Frequency 2400 11.4 2442 260 18.7 -23.8 -19.7 -91 -91 2484 23.4 MHz MHz mA dBm dBm dBm dBm Current Consumption Input 1dB Compression Point IIP3 RF Sensitivity RSSI Sensitivity March 9, 2001 BTI Confidential & Proprietary Information Page 3 of 4 2.4GHz RF TRANSCEIVER PACKAGE INFORMATION BT2577 EE T SH PR The information provided herein is believed to be accurate and correct. BethelTronix, Inc. assumes no responsibility for the inaccuracies or use of the information or the use of the described product. BethelTronix, Inc. reserves the right to make changes in circuit design and/ or specifications at any time without further notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third parties. TRFIC R RFICs for 850 - 2400MHz EL I March 9, 2001 M IN (c)Copyright 2001 BethelTronix, Inc. All rights reserved BTI Confidential & Proprietary Information A R Y D A TA Page 4 of 4 |
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