MLC8050 데이터 시트보기 (PDF) - Unspecified

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MLC8050

Multi laser controller module MLC8xxx

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4

Features

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1.2.2 General functions

The current modules MLC8xxx are unipolar current sources for laser diodes.

They can be ordered for laser diodes with anode grounded or cathode grounded. The

MLC offers two current ranges.

The different module types operate the same way, they only differ in maximum

current, resolution and accuracy.

(Refer to chapter 1.3, "Technical data" starting on page 5)

The current modules MLC8xxx contain a transimpedance amplifier input for the

monitor diode (input impedance 0 Ω). Both polarities of the monitor diode are

allowed. The monitor diode may be operated either photovoltaic (without bias

voltage) or photoconductive, i.e. with bias voltage (UBIAS = 5V).

All necessary value settings are done by the mainframe operating elements (keypad

and rotational encoder) or via remote control by a computer. Only the laser diode

current limit (hardware limit) has to be set manually as "absolute limit".

In an automated test set-up for different laser diodes no manual settings are

required.

All outputs can operate either in constant current or constant power mode

simultaneously. All outputs are switched on and off together.

With the modules MLC8xxx the laser diode current (constant current mode) or the

monitor diode current (constant power mode) are set with 12 bit resolution.

The monitor diode current is read back with 12 bit, the laser diode current, the limit

for the laser diode current (hardware limit) with 11 bit plus sign.

The built-in mains filter in the mainframe and the careful shielding of the transformer,

the micro processor as well as the module itself will provide an excellent suppression

of noise and ripple.

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© 2010 Thorlabs

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