ADL5315ACPZ-R7

The ADL5315ACPZ-R7 is a wide input precision high-side Current Mirror featuring a stable and user-adjustable input voltage. It is optimized for use with PIN photodiodes, but its flexibility and wide operating range make it suitable for a broad array of additional applications. Over the 3nA to 3mA range, the current sourced from the INPT pin is accurately mirrored with a 1:1 ratio and sourced from the IOUT output pin. In a typical photodiode application, the output drives a current input logarithmic amplifier to produce a linear-in-dB output representing the optical power incident upon the photodiode. For linear voltage output, a single resistor to ground is all that is required. The photodiode anode can be connected to a high speed transimpedance amplifier for the extraction of the data stream.

• Accurately mirrors input current (1:1 ratio) over 6 decades
• Linearity 1% from 3nA to 3mA
• Stable mirror input voltage
• Voltage held 1V below supply using internal reference or can be set externally
• Adjustable input current limit