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Log Amps / Detectors

Analog Devices offers a broad range of logarithmic amplifiers for both RF and IF applications, with the ability to measure signals up to 100 dB dynamic range, from dc to 10 GHz, and accuracies of +/-0.2dB. These products are ideally suited for use in wireless infrastructure, for both Receive Signal Strength Indication (RSSI) and transmit power level detection. In addition the range includes parts optimized for optical power measurement, radar / military applications, low power ASK demodulation and instrumentation.

  • Product Spotlight: ADL5513

  • The ADL5513 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 ADL5513 maintains accurate log conformance for signals up to 4 GHz. The input dynamic range is typically 80 dB (referred to 50 Ω) with error less than ±3 dB and 74 dB with error less than ±1 dB. More ...

  • Product Spotlight: ADL5519

  • The ADL5519 is a dual-demodulating logarithmic amplifier that incorporates two AD8317s. It can accurately convert an RF input signal into a corresponding decibel-scaled output. The ADL5519 provides accurately scaled, independent, logarithmic output voltages for both RF measurement channels. The device has two additional output ports, OUTP and OUTN, that provide the measured differences between the OUTA and OUTB channels. The on-chip channel matching makes the log amp outputs insensitive to temperature and process variations. More ....

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Logarithmic Amplifiers
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Part#
Results: 18
Product DescriptionRF Frequency (MHz)Dynamic Range (dB)Temp Stability (dB)Response Time (ns typ)Voltage Supply (V)Supply Current PackagePrice* (1000 pcs.)
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AD606Limiter Output-80-4004.5 to 5.51316-Lead DIP; 16-Lead SOIC $22.00
AD640Military Specified Part Available -50±110+/- 4.5 to +/- 7.54420-Lead DIP; 20-Lead LCC; 20-Lead PLCC $36.48
AD641Military Specified Part Available -44±110+/- 4.5 to +/- 7.54420-Lead DIP; 20-Lead LCC; 20-Lead PLCC $32.82
AD8302Dual-Channel Gain and Phase Outputs 2,70060±1602.7 to 5.51914-Lead TSSOP $12.14
AD8306Military Specified Part Available 5 to 400100±1732.7 to 5.51616-Lead SOP $14.67
AD8307High Dynamic Range dc to 50092±14002.7 to 5.588-Lead SOIC/DIP $6.07
AD8309Limiter Output 5 to 500100±1672.7 to 6.51616-Lead TSSOP $7.84
AD8310High Dynamic Range dc to 440100±1152.7 to 5.588-Lead SOIC $4.00
AD8311Low Power for Battery Operation 100 to 250050±0.51502.7 to 5.58.5WLCSP $1.27
AD8312Low Power for Battery Operation 50 to 350045±0.5702.7 to 5.54.2WLCSP $1.27
AD8313Industry Standard 100 to 250070±1.25402.7 to 5.5148-Lead uSOIC $7.99
AD8314Industry Standard 100 to 270045±1702.7 to 5.54.58-Lead uSOIC/CSP $1.10
AD8315Low Power for Battery Operation 100 to 250050±11502.7 to 5.58.58-Lead uSOIC $4.00
AD8317Available in Die 1 to 1000055±0.563 to 5.5228-Lead CSP $3.98
AD8318Integrated Temp Sensor 1 to 800070±0.5104.5 to 5.56816-Lead CSP $5.05
AD8319Pin-compatible with AD8317 1 to 1000045±0.563 to 5.5228-Lead CSP $1.77
ADL5513125°C Operation, Broadband 1 to 400080±0.5202.7 to 5.53116-Lead CSP $5.56
ADL5519Dual-Channel AD8317 1 to 1000062±0.563.3 to 5.55632-Lead LFCSP $5.04
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