Figure 10.LD Equivalent circuit for simulating of DC coupled flip chip mounted laser driver and laser diode. The capacitors and

inductors represent paratisiv elements of the connections. Best performance is achieved with chipR=10 W in bias.

Data Sheet Rev.: 11

GD16521

Page 5 of 13

IM

IB

*2

*3

VCC

IMB

chipR(0~50ohm)

chip R

(0~15ohm)

chipC(0~0.1 uF)

note1 : Chip component constants mean available range.

This circuit is applied to all temperature range.

note2 : on-chip stray elements

note3 : on-chip R, if necessary

chip R equivalent circuit

0.1 nH

0.1 nH

0.6 nH

0.3 nH

0.7 nH

6 ohm 1.0 V

0.1 nH

0.05 pF

LDD IC

LDD

0.05 pF

0.02 pF

0.02 pF

0.10 pF

0.02 pF

3pF

0.10 pF

0.05 pF

0.04 pF

0.02 pF

R

0.04 pF

chip C equivalent circuit

0.04 pF

C

0.1 ohm

0.01 nH

0.04 pF

0.1 nH