ADL5308
Description
The ADL5308 is a logarithmic transimpedance amplifier optimized for wide dynamic range signal level monitoring in fiber optic systems. It produces an accurate, temperature-compensated output voltage proportional to the logarithm of the ratio between the input current at pin INP, and a reference current.
Key Features
- Fast transient response (IPD stepped from 220 µA to 10 nA)
- Rise/fall time: <2.4 µs
- 2 dB Electrical (1 dB optical) settling time: <3.5 µs
- Flat Frequency Response/No Undershoot
- Bandwidth: 970 kHz at IINP = 10 nA
- Accurately trimmed logarithmic response
- Logarithmic slope: 200 mV/dec
- Logarithmic conformance error: ±0.2 dB at 25°C (IINP from 10 nA to 1 mA)
- Ratio input for direct optical gain measurements
- Comparator with adjustable hysteresis and latch enable
