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Optoelectronic IC/Component Evaluation
Quick Bench-top Evaluation of ICs and Electronic Components
Agilent B2900A Series of Precision
Source/Measure Units facilitates quick
DC evaluation of optoelectronic
components such as optocouplers.
B2912A (front view) B2912A (rear view)
DC evaluation of optoelectronic IC's/components Measurement examples
An optoelectronic IC or component typically consists of an emitting device (like an LED) Example 1: LED forward voltage
and photo detectors (PDs). This arrangement requires the simultaneous DC evaluation This is the most basic optoelectronic device measurement. Only one SMU is used to
of both devices. source and measure the LED. The B2900A's graphical display lets you directly view the
A pair of source/measure units (SMUs) is the ideal choice to make flexible DC IV curve.
measurements on both the LED and PD. Example 2: Input photo diode current transfer ratio
To illustrate this, two measurement examples of an off-the-shelf optocoupler are outlined Measuring how efficiently light is transferred from the LED to the PD is essential for
in this document. optocouplers. In this example, SMU1 is used to source forward current to the LED, while
SMU2 monitors the generated current as it changes the reverse bias voltage across PD1.
Dump to Organize your
Set SMUs for DUT Measurement
USB memory quick report B2912A DUT (HCNR-201)
Quick
Evaluation
Report
1 LED 8
SMU1 V
2 7
A 3 6
What is Quick Bench-top Evaluation?
SMU2
The B2900A series does not require a PC to make measurements on the
bench-top. You can view graphical measurement results on the B2900A and 4 5
PD1 PD2
save the graphs and data to any USB memory device, thereby improving the
efficiency of your bench-top evaluation and debugging. Of course, if you
prefer using a PC to control the B2900A then you can download Agilent's
DUT and SMU setup
Note: HCNR-201 is a product of
free Quick I/V Measurement Software from our website. Avago Technologies
Example 1: LED forward voltage Example 2: Input photo diode current transfer ratio
SMU1 current Cursor aligned to the
swept from 0 maximum value shows
For the B2900A series,
to 25 mA SMU2 voltage swept 46.47