參數(shù)資料
型號(hào)： FOA2322A
廠商： INFINEON TECHNOLOGIES AG
英文描述： 3.2 Gbi t /s Laser Driver IC for Telecom and Datacom Applications
中文描述： 3.2陸基攔截噸/ s的電信和數(shù)據(jù)通信應(yīng)用激光驅(qū)動(dòng)器集成電路
文件頁(yè)數(shù)： 26/37頁(yè)
文件大小： 542K
代理商： FOA2322A
FOA2322A
Pin Description
Preliminary Data Sheet
22
2001-05
3
Pin Description
Table 6
Pin Definitions and Functions
Signal Name Function
D / DN
Explanation
Differential data input. D corresponds to O and DN
to ON current output. With a high level at D and a
low level at DN modulation current is drawn by O
and ON is inactive. With a low level at D and a high
level at DN modulation current is drawn by ON and
O is inactive. Both inputs are prebiased to internal
V
BBD
. The input termination is 100
.
Differential clock input for input data latch. The
input termination is 100
.
A low level at CSELN enables the data input latch
(clocked mode), a high level or an open input
disables the data input latch (nonclocked mode). It
has an internal pull-up-resistor of about 10 k
.
These output signals drive the modulation current
switched by D / DN data inputs.
The modulation controller characteristic can be set
to an i-controller with an external capacitor at
CMOD to
V
EE
and the time constants are
adjustable in mode 2. Let open if mode 1 is used.
Base of the output current mirror 1:10. For normal
application it can be leave open if not used.
With an external capacitor at CISM to
V
CC
the
delay time for detection of a bad duty cycle data
input situation can be increased. If the input signal
monitor is not used CISM has to be pulled down by
25 k
resistor to
V
EE
.
With an external capacitor at CILM to
V
CC
the
delay time for detection of static data input situation
can be increased. If the peak detector is not used
CILM has to short to
V
CC
.
HWA is an open collector output (indicator output).
A low level is generated whenever a bad duty cycle
data input situation is detected by the input signal
monitor circuit or if the supply voltage is lower than
the
V
CC
reset. Let open if not used.
Differential Input
CLK / CLKN
Differential Input
CSELN
Logic Input
O / ON
Differential Current
Output
Control
CMOD
VMOD
Output
CISM
Control
CILM
Control
HWA
Logic Output
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