Logarithmic amplifier for wide-dynamic-range signal conditioning
The LOG114AIRGVT: It converts input currents or voltages over multiple decades into a linearized output voltage, making it the natural choice for photodiode front-ends, optical power monitoring, and any application where the signal spans a wide dynamic range. The -3 dB bandwidth is 5 MHz and the slew rate is 5 V/µs, so it handles modulated optical signals up into the low-MHz region without losing the log conformance. Input bias current is 5 pA, which keeps the error negligible when working with photodiode currents in the nanoamp range.
Supply range, offset, and output drive
Input offset voltage is 100 µV. Supply current is 10 mA.
Temperature range — indoor and controlled environments
The operating temperature range is -5°C to 75°C.
ROHS3 compliant.