AD8317 PDF Datasheet


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Description

This is Log Detector / Controller. FEATURES Wide bandwidth: 1 MH- to 10 GH- High accuracy: ±1.0 dB over temperature 55 dB dynamic range up to 8 GH- ± 3 dB error Stability over temperature: ±0.5 dB Low noise measurement, controller output, VOUT Pulse response time: 6 ns, 10 ns (fall, rise) Small footprint, 2 mm × 3 mm LFCSP Supply operation: 3.0 V to 5.5 V @ 22 mA Fabricated using high speed SiGe process APPLICATIONS RF transmitter PA setpoint control and level monitoring Power monitoring in radio link transmitters RSSI measurement in base stations, WLANs, WiMAX, and radars GENERAL DESCRIPTION The AD8317 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device can be used in either measurement or controller modes. The AD8317 maintains accurate log conformance for signals of 1 MH- to 8 GH- and provid.