AD8307ARZ Datasheet

Logarithmic Amplifiers


The AD8307ARZ is the first logarithmic amplifier made available in an 8-lead (SOIC-8) package. It is a complete 500 MHz monolithic demodulating logarithmic amplifier based on the progressive compression (successive detection) technique, providing a dynamic range of 92 dB to ±3 dB law-conformance and 88 dB to a tight ±1 dB error bound at all frequencies up to 100 MHz. It is extremely stable and easy to use, requiring no significant external components. A single-supply voltage of 2.7 V to 5.5 V at 7.5 mA is needed, corresponding to an unprecedented power consumption of only 22.5 mW at 3 V. A fast acting CMOS-compatible control pin can disable the AD8307 to a standby current of less than 150 μA. AD8307ARZ Features • Complete multistage logarithmic amplifier• 92 dB dynamic range: –75 dBm to +17 dBm to –90 dBm using matching network• Single supply of 2.7 V minimum at 7.5 mA typ• DC to 500 MHz operation, ±1 dB linearity• Slope of 25 mV/dB, intercept of −84 dBm• Highly stable scaling over temperature• Fully differential dc-coupled signal path• 100 ns power-up time, 150 μA sleep current AD8307ARZ Applications • Conversion of signal level to decibel form• Transmitter antenna power measurement• Receiver signal strength indication (RSSI)• Low cost radar and sonar signal processing• Network and spectrum analyzers (to 120 dB)• Signal level determination down to 20 Hz• True decibel ac mode for multimeters


[{"Name":"Number of Channels","Value":"1"},{"Name":"Bandwidth","Value":"900 MHz "},{"Name":"Input Offset Voltage","Value":"50 uV "},{"Name":"Input Voltage Range (Max)","Value":"5.5 V "},{"Name":"Operating Supply Voltage","Value":"2.7 V to 5.5 V "},{"Name":"Supply Current ","Value":"8 mA "},{"Name":"Operating Temperature Range ","Value":"- 40 C to + 85 C "},{"Name":"Mounting Style","Value":"SMD/SMT "},{"Name":"Package / Case ","Value":"SOIC-8"},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information


Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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