AD8309 5-500MHz 100dB Detector Logarithmic Amplifier Power Meter
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SKU: U2I-BG-1336065
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Description
Product description:
The AD8309 is a 500 MHz detector logarithmic amplifier based on successive detection techniques for Received Signal Strength Indication (RSSI) and Phase Detection in cellular base stations, radars and other radio transceiver applications. The device offers 100 dB of dynamic range with ± 0.4 dB accuracy over the mid-80 dB range and operating frequencies up to 500 MHz. The logarithmic output is proportional to the logarithm of the input signal and provides a 0.4 V to 2.5 V DC signal over a 100 dB input range. The device also offers limiter output that amplifies the input signal by 100 dB and provides a stable, limited output with a maximum phase deviation of ± 100 ps. This limiter output is useful for demodulating FSK and PSK modulated signals. The AD8309 operates from a single 2.7 V to 5.5 V DC power supply and typically consumes 20 mA and is available in a 16-lead plastic TSSOP package.
Technical characteristics
Complete multi-level log-amplitude IF amplifier 100 dB Dynamic Range: -78 dBm to +22 dBm (Re 50 O) Programmable Limiter Gain and Output Current Differential Outputs to 10 mA, 2.4 V pp Total Gain: 100 dB, Bandwidth: 500 MHz Constant phase (typical delay deviation: 680 ps) Power-on time: 500 ns, Sleep current: <1 mA RSSI scaling does not vary with temperature and supply voltage: Slope: 20 mV / dB, Intercept: -95 dBmRSSI Linearity: ± 0.4 dB (to 200 MHz) Single Supply: +2.7 V to +6.5 V, Current: 16 mA (typ) Fully differential input, input resistance (RIN) = 1 KΩ, CIN = 2.5 pF
Package included:
1 x AD8309 5-500MHz 100dB Detector Logarithmic Amplifier
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