The PDA-750 is a low noise, high gain, Transimpedance Amplifier current meter that is designed to provide a direct digital readout of the current generated from a photodiode, photo multiplier, or similar current source. It provides for digital entry of detector responsivity in units of Amps/Watt which enables it to be used as a sensitive, high precision optical power meter. It also incorporates a digitally controlled bias source (from -14 to+14 volts) that may be switched to be in series with the detector under test. This permits in-circuit detector biasing as well as easy measurement of detector leakage currents. A serial port is supplied that allows the user to both control the unit and log data.
Key Benefit
8 Decade Dynamic Range
Less than 1 pA noise
1 part in 20,000 Resolution
Analog output voltage proportional to current input
Full scale input range of +/- 20 nA to +/- 20 mA
Variable bias is digitally selectable from - 14V to + 14V
