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SA2420DH Folha de dados(PDF) 2 Page - NXP Semiconductors |
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SA2420DH Folha de dados(HTML) 2 Page - NXP Semiconductors |
2 / 16 page Philips Semiconductors Product specification SA2420 Low voltage RF transceiver — 2.45 GHz 2 1997 May 23 853–1984 18069 DESCRIPTION The SA2420 transceiver is a combined low-noise amplifier, receive mixer, transmit mixer and LO buffer IC designed for high-performance low-power communication systems for 2.4-2.5GHz applications. The LNA has a 2.5dB noise figure at 2.45GHz with 14dB gain and an IP3 intercept of -3dBm at the input. The gain is stabilized by on-chip compensation to vary less than ±0.2dB over the -40 to +85°C temperature range. The wide-dynamic-range receive mixer has a 10.9dB noise figure and an input IP3 of +2.8dBm at 2.45GHz. The nominal current drawn from a single 3V supply is 37mA in transmit mode and 22mA in receive mode. FEATURES • Low current consumption: 37mA nominal transmit mode and 22mA nominal receive mode • Fabricated on a high volume, rugged BiCMOS technology • High system power gain: 22.5dB (LNA + Mixer) at 2.45GHz • TSSOP24 package • Excellent gain stability versus temperature and supply voltage • -10dBm LO input power can be used to drive the mixer • Operates with either full or half frequency LO • Wide IF range: 50–500MHz PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 24 23 22 21 20 19 18 17 16 15 DH Package ATTEN SW Tx/Rx SW GND RF IN/OUT GND GND GND LNA OUT VCC GND GND Rx IF OUT GND LOP LNA IN GND GND Rx IF OUT Tx IF IN Tx IF IN LO SW LOM VCC LO CHIP EN SR00164 Figure 1. Pin Configuration APPLICATIONS • 2.45GHz WLAN front-end (802.11, ISM) ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 24-Pin Plastic Thin Shrink Small Outline Package (Surface-mount, TSSOP) -40 to +85 °C SA2420DH SOT355-1 BLOCK DIAGRAM 4 3 2 15 24 23 22 21 20 7 610 9 8 19 18 17 16 15 LO GND LOP GND VCC RF IN/ OUT GND ATTEN SW CHIP EN GND GND LNA OUT SW GND LNA GND GND 12 11 14 13 LOM LO Tx/Rx SW GND VCC LNA IN Rx IF OUT Rx IF OUT Tx IF IN Tx IF IN RX RX TX BUFFER FREQ. DBLER BPF BPF PRE-DRIVER TX ATTENUATOR SR00165 X2 X1 Figure 2. SA2420 Block Diagram |
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