iC-NZP

P-TYPE LASER DIODE DRIVER

Rev C1, Page 10/15

M-Type diodes

ECI

VDD

NCID

-

MD

+

INPUT INTERFACE

GND

100 nF..

CIS

CI

LVDS/TTL

RSI

&

RSI

RMD

ECI

OverCurrent

CI

1

OUTPUT DRIVER

..10 nF..

9kΩ

i(RSI)x540

VSY

&

REGE

..300mA

+

CVDDA

VDD

REF

TTL

EN

PMD

LDA

T.PAD

NSLP

SYN

M

&

PMD

M

VDD

RVDD

x280

RSI

iC-NZP

CVDD

GND

OUTPUT MONITOR

NERR

0.68..

RGND

EP

RMD

IMON

&

VDD

LDA MONITOR

-

OverTemp.

1

AVG

100 nF..

1

Bandgap, Reference, Overtemp

VDDL

VDDA

1

..300mA

Low V(LDA)

+3..+5.5V

CI

Figure 4: Circuit example for M-type laser diodes (case grounded)

N-Type diodes

Although this type of laser diodes are supported by

iC-NZP, it’s strongly recommended to use iC-NZN in-

stead, since in this configuration all the pulses at LDA

will be coupled directly to pin MD due to monitor photo

diode’s internal capacitance. Thus making an accurate

control much more difficult.

RVDD

GND

CIS

TTL

RSI

VDDL

RSI

RMD

AVG

REGE

ECI

N

RMD

1

T.PAD

9kΩ

1

EP

x280

VDD

CVDDA

ECI

LVDS/TTL

CVDD

-

EN

&

NCID

NERR

LDA

Bandgap, Reference, Overtemp

LDA MONITOR

VDDA

IMON

OUTPUT DRIVER

REF

CI

RGND

MD

OverCurrent

PMD

+3..+5.5V

VDD

PMD

+

11

100 nF..

N

CI

NSLP

CI

RSI

&

-

OverTemp.

VDD

SYN

VSY

..300mA

+

VDD

Low V(LDA)

INPUT INTERFACE

&

0.68..

OUTPUT MONITOR

100 nF..

..300mA

i(RSI)x540

..10 nF..

iC-NZP

GND

&

Figure 5: Circuit example for N-type laser diodes