
16
Agere Systems Inc.
CA16-Type 2.5 Gbits/s DWDM Transponder with
16-Channel 155 Mbits/s Multiplexer/Demultiplexer
Advance Data Sheet
March 2001
Electrical Characteristics
Table 6. Power Supply Characteristics
(Tc = 0 °C to 65 °C)
Table 7. Transmitter Electrical I/O Characteristics
(T
C
= 0 °C to 65 °C, V
CC
= 3.3 V ± 5%)
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.
Parameter
Symbol
V
CC
I
CC
V
TEC
TEC_I
CC
P
DISS
Min
3.13
—
3.0
—
—
Typ
3.3
2000
3.3
0.6
<9
Max
3.47
—
3.5
1200
—
Unit
V
mA
V
mA
W
Supply Voltage
dc Power Supply Current Drain
TEC Voltage
TEC-Only Current Drain
Power Dissipation
Parameter
Symbol
Logic
Min
Typ
Max
Unit
Parallel Input Clock
PIC
LK
P/N
Diff.
LVPECL
—
Diff.
LVPECL
—
—
Diff.
LVPECL
153.90
155.52
157.00
MHz
Parallel Clock in Duty Cycle
Reference Clock Freq. Tolerance
—
40
–20
—
—
60
20
%
TxR
EF
C
LK
P/N
ppm
Reference Clock Input Duty Cycle
Reference Clock Rise and Fall Time
1
Reference Clock Signal Levels
2
:
Differential Input Signal Level,
V
INDIFF
Single-ended Input Sig. Level,
V
INSINGLE
Differential Input Resistance,
R
Input Data Signal Levels:
Input High, V
IH
Input Low, V
IL
Input Voltage Swing,
V
IN
Transmitter Disable Input
3
Transmitter Enable Input
3
Wavelength-Select Voltage:
Channel N Select, V
λ
N
Channel N – 1 Select, V
λ
N–1
Wavelength Deviation Alarm:
Normal Mode, V
NO-ALARM
Wavelength Alarm, V
ALARM
Alarm Setting (active-high)
4
Laser Degrade Alarm:
Normal Mode, V
NO-ALARM
Laser Degraded, V
ALARM
Laser Power Monitor Output
5
Phase Initialization:
Input High, V
IH
Input Low, V
IL
—
30
—
—
—
70
0.5
%
ns
t
R
, t
F
TxR
EF
C
LK
300
150
80
—
—
100
1200
600
120
mV
mV
TxD[0:15]P/N
Diff.
LVPECL
V
CC
– 1.2
V
CC
– 2.0
300
2.0
0
—
—
—
—
—
V
CC
– 0.3
V
CC
– 1.5
—
5.0
0.8
V
V
mV
V
V
TxD
IS
TxE
N
WS
TTL (5 V)
TTL (5 V)
TTL
0
2.0
—
—
0.8
V
CC
V
V
WDEA
TTL
0
4.5
–100
—
—
—
0.3
5
100
V
V
pm
LSRALM
TTL
4.5
0
35
—
—
500
5
0.3
1000
V
V
LPM
PHINIT
Analog
LVPECL
mV
V
CC
– 1.0
V
CC
– 2.3
—
—
V
CC
– 0.57
V
CC
– 1.44
V
V