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The PointCharger SE4100 integrates the IF filter, VCO, tank circuitry and LNA into a 4 mm2 package with a typical current draw of 10 mA from a 2.7 V supply. This GPS receiver IC includes an on-chip switchable gain LNA that delivers a low noise figure of 1.3 dB typical, as well as quick recovery from either power saving mode for from RF overload from a local transmitter. The device delivers a digital 4.092 MHz output. When paired with baseband circuits, the whole system consumes less than 120 mW in continuous operation.
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