AD606JRZ

AD606 is a complete, monolithic logarithmic amplifier using a 9-stage successive-detection technique. It provides both logarithmic and limited outputs. All scaling parameters are proportional to the supply voltage. This can operate above and below these limits, with reduced linearity, to provide as much as 90dB of conversion range. A second low-pass filter automatically nulls the input offset of the first stage down to the sub microvolt level. Adding external capacitors to both filters allows operation at input frequencies as low as a few hertz. Application includes ultrasound and sonar processing, phase-stable limiting amplifier to 100MHz, received signal strength indicator (RSSI), wide range signal and power measurement.

• Logarithmic amplifier performance
• On-chip low-pass output filter
• Limiter performance
• Adjustable output amplitude
• Low power
• Typical dynamic range is 80dB (at TA=+258°C and supply=+5V)
• Typical output current is 1.2mA (at pins 8 or 9, proportional to VPOS, LADJ grounded)
• Typical slope accuracy is ±5% (untrimmed at 10.7MHz, at TA=+25°C)
• Operating temperature rating range from 0 to +70°C
• 16-lead narrow-body SOIC package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party