Anyone has experience of using LDX-3620 constant current source to drive DFB laser diode. DFB-LD is working fine on voltage source (1.5v, 22mA) but when I try to operate on current source ,it does not give any output.
I am using pin 1 and 2 (shorted) , cathode (pin 4 ) and and anode (pin 8), pins of the current source (LDX-3620). How can I get rid of this problem??
Datasheet of LDX-3620
https://www.artisantg.com/info/PDF__494C585F4C4458333632305F4D616E75616C.pdf
Datasheet of DFB-LD
http://www.hanaluminous.com/spec/LD%20Coaxial/LDB4xxA-4Cx(1550_DFB_2.5G).pdf
Thanks