tza3050 NXP Semiconductors, tza3050 Datasheet - Page 15

• Manufacturer Part Number: tza3050
• Description: Tza3050 30 Mbits/s Up To 1.25 Gbits/s Burst Mode Laser Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 14806
Product data sheet
12.1.4 Alarm monitor current
12.1.5 Pulse width adjustment
The I
ground:
The detection level is independent of burst mode timing.
The alarm threshold I
of the MAXMON pin. The current range for I
corresponds with an I
sunk by an external current source or by connecting R
As the detected I
mode timing. The formula can be used as a reference for a mode where signal is always
present.
The pulse width adjustment time is determined by resistor R
The t
resistance ranging from 6.7 k minimum to 20 k maximum
is disabled when the PWA input is short-circuited to ground, the t
PWA function.
I
I
t
PWA
oper(alarm)
MON(alarm)
Fig 6. Typical pulse width adjustment
MAXOP
PWA
=
200
typical range is from 100 ps to +100 ps, which corresponds with an R
=
=
current can be sunk by an external current source or by connecting R
N
N
R
-----------------------------------
MAXOP
MAXMON
PWA
R
MON
PWA
–
10 k
MON(alarm)
MON(alarm)
is an average current, the alarm threshold is a function of the burst
t
V
-------------------- -
R
(ps)
PWA
MAXOP
MAXOP
100
100
V
------------------------- -
R
Rev. 03 — 7 April 2005
MAXMON
MAXMON
0
[ps]
on the monitor current is determined by the source current
from 150 A to 3000 A. The I
30 Mbits/s up to 1.25 Gbits/s burst mode laser driver
6.7
10
MAXMON
R PWA (k )
is from 10 A to 200 A, which
MAXMON
20
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
PWA
(Figure
MAXMON
mgt893
to ground:
:
PWA
6). The PWA function
is 0 ps for a disabled
current can be
TZA3050
PWA
MAXOP
15 of 24
to