Datenblatt-Suchmaschine für elektronische Bauteile |
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SA2421DH Datenblatt(PDF) 6 Page - NXP Semiconductors |
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SA2421DH Datenblatt(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product specification SA2421 2.45 GHz low voltage RF transceiver 2000 Mar 13 6 Table 1. Truth Table Chip-En ATT-SW TX–RX Mode LNA Gain RX Mixer TX Mixer and Predriver 0 X X Sleep N/S off off 1 1 0 Receive +14.3 dB on off 1 0 0 Receive –19 dB on off 1 X 1 Transmit N/S off on FUNCTIONAL DESCRIPTION The SA2421 is a 2.45 GHz transceiver front-end available in the TSSOP-24 package. This integrated circuit (IC) consists of a low noise amplifier (LNA) and up- and down-converters. There is an enable/disable switch available to power up/down the entire chip in 1 µs, typically. This transceiver has several unique features. The LNA has two operating modes: 1) high gain mode with a gain = +14.3 dB; and 2) low gain mode with a gain –19 dB. The switch for this option is internal and is controlled externally by high and low logic to the pin. When the LNA is switched into the attenuation mode, active matching circuitry (on-chip) is switched in (reducing the number of off-chip components required). To reduce power consumption when the chip is transmitting, the LNA is automatically switched into a “sleep” mode (internally) without the use of external circuitry. |
Ähnliche Teilenummer - SA2421DH |
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Ähnliche Beschreibung - SA2421DH |
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