Single +5V, Fully Integrated,

1.25Gbps Laser Diode Driver

_______________________________________________________________________________________

3

-250mV

250.3mV

38.23ns

200ps/div

EYE DIAGRAM

(622Mbps, LOAD = 25

Ω, NOT FILTERED)

40.23ns

-35mV

265mV

38.14ns

200ps/div

EYE DIAGRAM

(622Mbps, LOAD AT OUT- = 1300nm

LASER WITH 467MHz BESSEL FILTER)*

40.14ns

-250mV

250.3mV

38.13ns

117ps/div

EYE DIAGRAM

(1062Mbps, LOAD = 25

Ω, NOT FILTERED)

39.3ns

-50mV

450mV

38.74ns

117ps/div

EYE DIAGRAM

(1062Mbps, LOAD AT OUT- = 1300nm

LASER WITH 800MHz BESSEL FILTER)*

39.91ns

-35mV

265mV

38.15ns

200ps/div

MAX3261CCJ EYE DIAGRAM

(622Mbps, LOAD AT OUT- = 1300nm

LASER WITH 467MHz BESSEL FILTER)*

40.15ns

-66.2mV

513.7mV

37.78ns

117ps/div

MAX3261CCJ EYE DIAGRAM

(1062Mbps, LOAD AT OUT- = 1300nm

LASER WITH 800MHz BESSEL FILTER)*

38.95ns

100

0

500

MONITOR CURRENT (

µA)

1000

10,000

1000

100,000

1,000,000

0

0

20

40

5

60

3

1

4

2

6

7

8

* LASER = EPITAXX EDL 1300RFC TO-STYLE HEADER

0

0

5

10

15

20

25

8

MODULATION CURRENT (mAp-p)

30

6

4

2

10

12

DIFFERENTIAL INPUT

SWING = 1100 mVp-p

__________________________________________Typical Operating Characteristics

(MAX3261E/D, load at OUT+ and OUT- = 25