IC-NZN_14 Datasheet, PDF (2/17 Pages) IC-Haus GmbH – N-TYPE LASER DIODE DRIVER

iC-NZN
N-TYPE LASER DIODE DRIVER
Rev C1, Page 2/17
DESCRIPTION
Laser diode pulse driver iC-NZN allows CW opera-
tion of laser diodes and spike-free switching with de-
fined current pulses up to 155 MHz. The optical out-
put power of the laser diode is set-up by means of an
external resistor (RMD/PMD). For laser current con-
trol without a monitor diode, the laser current moni-
tor at pin IMON is utilised. For high pulse frequen-
cies the device can be switched into controlled burst
mode. A previously settled operating point is main-
tained throughout the burst phase.
An averaging current monitor can be set by means of
an external resistor at pin RSI. When the current limit
is reached, overcurrent is signalled at NERR and the
current from pin LDA is limited to the pre-set value
but the iC is not shut down. There is an additional
current limitation in pin LDK that prevents the iC from
overpowering the laser diode.
Setting pin NSLP low, the iC enters a low consump-
tion sleep-mode (< 50 µA typ.).
PACKAGING INFORMATION QFN24 4 mm x 4 mm to JEDEC
PIN CONFIGURATION
24 23 22 21 20 19
1
18
2
17
3
16
NZN
4
code...
15
5
...
14
6
13
7 8 9 10 11 12
PIN FUNCTIONS
No. Name Function
1 VDD Power Supply
2 AVG Enable Averaging Control
3 MD APC setup, monitor input
4 IMON Laser Current Monitor
5 CID Enable Pulldown Current at CI
6 EP Positive LVDS/TTL switching input
7 EN Negative LVDS switching input
8 TTL Enable TTL input
9 VSY Sync Output Supply Voltage
10 SYN Sync Output
11 RGND Reference Ground
12 RVDD Reference (P-type laser diodes)
13 LDK Laser Diode Cathode
14 AGND Analog ground
15 CIS Power Control Capacitor sense
16 CI Power Control Capacitor
17 LDA Laser Diode Anode
18
n/c
19 RSI Current Monitor Setup
20 REGE Control Enable
21 GND Ground
22 NSLP Not Sleep-Mode
23 NERR Error Output
24
n/c
The Thermal Pad is to be connected to a Ground Plane (GND) on the PCB.
Only pin 1 marking on top or bottom defines the package orientation ( NZN label and coding is subject
to change).