ANALOG DEVICES ADL5309-EVALZ Evaluation Board, ADL5309ACBZ, Logarithmic Amplifier

ADL5309-EVALZ is an evaluation board to evaluate the ADL5309 dual, 188dB range, 10pA to 25mA, logarithmic converter. The ADL5309 is comprised of dual monolithic logarithmic transimpedance amplifiers that are optimized for the measurement of low frequency and wide dynamic range signal power in fibre optic systems. The device produces a highly accurate, temperature compensated output voltage proportional to the logarithm of the ratio between the input current at Pin INP and an internally generated reference current. The logarithmic slope and intercept are both factory-trimmed to a nominal value of 200mV/decade and 10pA, respectively. Both can be adjusted through the I2C interface. A digital representation of the OUT1 and OUT2 outputs, along with a digital thermometer, is available through the I2C interface. A 14bit SAR ADC, controlled through the I2C interface, samples the OUT1 channel output, OUT2 channel output, and the digital thermometer output.

• Full featured evaluation board for the ADL5309
• Supports external electrical input or on-board photodiode for optical input
• On-chip or external photodiode bias
• ADC control for VOUT1, VOUT2, and digital thermometer

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