
17
Agere Systems Inc.
Advance Data Sheet
March 2001
CA16-Type 2.5 Gbits/s DWDM Transponder with
16-Channel 155 Mbits/s Multiplexer/Demultiplexer
Electrical Characteristics
(continued)
1. 20% to 80%.
2. Internally biased and ac-coupled.
3. The transmitter is normally enabled and only requires an external voltage to disable.
4. The WDEA alarm becomes active when the optical wavelength deviates from the nominal center wavelength by more than 100 pm.
5. Set at 500 mV at nominal optical output power. Provides linear P
O
tracking (–3 dB = 250 mV, +3 dB = 1000 V).
6. Terminated into 200
to GND and 100
line-to-line.
Table 8. Receiver Electrical I/O Characteristics
(Tc = 0 °C to 65 °C, Vcc = 3.3 V ± 5%)
1. Terminated into 330
to ground.
2. 20% to 80%, 330
to ground.
Table 7. Transmitter Electrical I/O Characteristics
(T
C
= 0 °C to 65 °C, V
CC
= 3.3 V ± 5%) (continued)
Parameter
Symbol
Logic
Min
Typ
Max
Unit
Phase Error
5
:
Output High, V
OH
Output Low, V
OL
Line Loopback Enable:
Active-low:
Input High, V
IH
Input Low, V
IL
Diagnostic Loopback Enable:
Active- low:
Input High, V
IH
Input Low, V
IL
Parallel Output Clock
6
:
Output High, V
OH
Output Low, V
OL
Differential Voltage Swing,
V
DIFF
S-E Voltage Swing,
V
SINGLE
PHERR
LVPECL
V
CC
– 1.2
V
CC
– 2.2
—
—
V
CC
– 0.65
V
CC
– 1.5
V
V
L
LOOP
LVTTL
2.0
0
—
—
V
CC
+ 1.0
0.8
V
V
D
LOOP
LVTTL
2.0
0
—
—
V
CC
+ 1.0
0.8
V
V
PC
LK
P/N
Differential
LVPECL
V
CC
– 1.15
V
CC
– 1.95
800
400
—
—
—
—
V
CC
– 0.6
V
CC
– 1.45
1900
950
V
V
mV
mV
Parameter
Symbol
Logic
Min
Typ
Max
Unit
Parallel Output Clock:
Output High, V
OH
Output Low, V
OL
POC
Lk
Duty Cycle
Output Data Signal Levels
1
:
Output High, V
OH
Output Low, V
OL
RxQ[0:15] Rise/Fall Time
2
POC
LK
P/N
Differential
LVPECL
V
CC
– 1.3
V
CC
– 2.0
—
—
V
CC
– 0.7
V
CC
– 1.4
V
V
—
—
40
—
60
%
RxQ[0:15]P/N
Differential
LVPECL
V
CC
– 1.3
V
CC
– 2.0
—
—
V
CC
– 0.7
V
CC
– 1.4
V
V
—
—
—
—
1.0
ns
Frame Pulse:
Output High, V
OH
Output Low, V
OL
Loss-of-Signal Output:
Output High, V
OH
Output Low, V
OL
Out-of-Frame Input:
Input High, V
IH
Input Low, V
IL
Frame Enable Input
Input High, V
IH
Input Low, V
IL
FP
LVPECL
V
CC
– 1.3
V
CC
– 2.0
—
—
V
CC
– 0.7
V
CC
– 1.4
V
V
LOS
LVTTL
2.4
0
—
—
V
CC
0.4
V
V
OOF
LVTTL
2.0
0.0
—
—
TTL V
CC
+ 1.0
0.8
V
V
FRAMEN
LVTTL
2.0
0.0
—
—
TTL V
CC
+ 1.0
0.8
V
V