ixld02 IXYS Corporation, ixld02 Datasheet - Page 4

• Manufacturer Part Number: ixld02
• Description: Ixld02si Differential 2a Ultra Fast Laser Diode Driver
• Manufacturer: IXYS Corporation

Pin Configurations And Package Outline
Pin Description
NOTE: Bottom-side heat sinking metalization is connected to ground
1 5 , 1 6,
1 7 , 1 8,
2 5 , 2 6,
1 9 , 2 0.
2 2 , 2 3,
1 3 , 1 4
2 7 , 2 8
P in s
1 ,2 ,
1 0
1 1
1 2
2 1
2 4
3
4
5
6
7
8
9
D G N D
V D D A
G N D A
N a m e
O U T b
G N D O u tp u t g ro u n d p in s de sig n e d fo r lo w in d uc tan c e .
V D D
P D N
O U T
V T T
IPW
R S T
IO P
F IN
IB I
T h is p in is a hig h c u rren t, lo w in d u cta nc e pin de s ig n ed to a cce p t p ea ks
o f 2 A m p s a t 5 V .
T h is is a lo w c u rre n t a n a lo g pow e r in p u t. C irc u it c om p on e n ts s e ns itive
to th e n o is e p re se n t o n V D D in a re su p plied b y th is pin .
T h is p in is th e 1 /2 V D D A in te rna l a na log c om p a ra to r re fe re n ce p o in t.
L o w c u rre n t, lo w n o ise a na log re tu rn . N o ise se ns itive c irc u it
c o m p o n en ts a re re tu rne d h e re.
T h e c u rre n t, I
re s p ec t to I
A c u rren t, I
s w itc h e s, p in 1 9 th rou g h p in 24 . T h e p rog ra m ra tio is 1 :1 0 00 X . T h is
m e a ns a 1 m A c u rre n t w ill p ro du c e 1 A m p . S e e F ig u re 2 .
A c u rren t, I
p u lse w id th , t
I
ze ro . S e e F ig u re 2 fo r t
A T T L h ig h o n this p in w ill p o w e r d o w n th e de vic e s o th a t o n ly le a k ag e
c u rre nt w ill flo w fro m V D D to D G N D . A T T L lo w w ill tu rn o n th e d e vic e
w ith in 3 0 n s . S ee F ig u re 3 .
A s ys tem res e t pin , w h ich in itia lize s th e d e vic e s o th a t it s ta rts in a
p re d e te rm in e d in itial s ta te .
T h is p in is th e re tu rn fo r th e inp u t lo g ic , I
in te rna lly co n ne c te d to th e o the r g ro un d s, A G N D o r G N D , th ro u g h th e
s u bs tra te .
W ith P D N lo w , a p o sitive ed g e o f a T T L c o m p a tib le s ig n a l h ere w ill
p ro d uc e th e pu lse cu rre n t o u tpu t a va ila b le a t th e O U T a n d a
c o m p lem e n t o f it a t O U T b p in s. R e fe r to F ig u re 3 fo r F IN a nd P D N
tim in g .
T ru e la s e r d iod e d rive o u tp u t cu rre n t. D e s ig n ed fo r lo w in d ucta n ce a nd
o u tp u t vo lta ge co m p lian ce to + 1 2 V .
C o m p le m en ta ry las e r d iod e d rive o u tp u t c u rre n t. D e sig n ed fo r lo w
in d uc ta nc e a n d o u tpu t vo lta g e c o m p lia n ce to + 1 2 V .
IPW
a pp ro ac h es I
IO P
IPW
IPW
PW
IB I
, in to th e IO P p in p ro g ram s th e las e r dio d e o u tpu t
, flo w in g into the IPW p in d e te rm in es the o u tp ut c u rren t
c u rre n t to c o m pe n s ate fo r in te rn al d ela ys . S e e F ig u re 2 .
, flo w in g into the IB I pin ac ts a s a ba s eline c urre n t w ith
, w ith res p e c t to I
IB I
b u t le ss tha n I
PW
4
a s a fu nc tion o f I
D e s c rip tio n
IB I
IB I
. If I
, th e pu lse w id th b ec om es n on -
IPW
IB I
= I
, I
IB I
IB I
IO P
, th e p u ls e w id th is 0 . A s
a nd I
, a n d I
IPW
IPW
.
c u rre n ts . It is
IXLD02SI