CA16-Type 2.5 Gbits/sDWDMTransponder 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)
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage
VCC
ICC
3.13
—
3.3
2000
3.3
3.47
—
V
mA
V
dc Power Supply Current Drain
TEC Voltage
VTEC
TEC_ICC
PDISS
3.0
—
3.5
TEC-Only Current Drain
Power Dissipation
0.6
1200
—
mA
W
—
<9
Table 7. Transmitter Electrical I/O Characteristics (TC = 0 °C to 65 °C, VCC = 3.3 V ± 5%)
Parameter
Parallel Input Clock
Symbol
Logic
Min
Typ
Max
Unit
PICLKP/N
Diff.
153.90
155.52
157.00
MHz
LVPECL
Parallel Clock in Duty Cycle
—
—
40
—
—
60
20
%
Reference Clock Freq. Tolerance
TxREFCLKP/N
Diff.
–20
ppm
LVPECL
Reference Clock Input Duty Cycle
—
—
—
30
—
—
—
70
%
1
Reference Clock Rise and Fall Time
tR, tF
0.5
ns
2
Reference Clock Signal Levels :
TxREFCLK
Diff.
Differential Input Signal Level, ∆VINDIFF
Single-ended Input Sig. Level, ∆VINSINGLE
Differential Input Resistance, ∆R
LVPECL
300
150
80
—
—
100
1200
600
120
mV
mV
Ω
Input Data Signal Levels:
Input High, VIH
TxD[0:15]P/N
Diff.
LVPECL VCC – 1.2
VCC – 2.0
—
—
—
VCC – 0.3
VCC – 1.5
—
V
V
mV
Input Low, VIL
Input Voltage Swing, ∆VIN
300
3
Transmitter Disable Input
TxDIS
TxEN
WS
TTL (5 V)
TTL (5 V)
TTL
2.0
0
—
—
5.0
0.8
V
V
3
Transmitter Enable Input
Wavelength-Select Voltage:
Channel N Select, VλN
0
2.0
—
—
0.8
VCC
V
V
Channel N – 1 Select, VλN–1
Wavelength Deviation Alarm:
Normal Mode, VNO-ALARM
Wavelength Alarm, VALARM
Alarm Setting (active-high)4
WDEA
TTL
TTL
0
4.5
–100
—
—
—
0.3
5
100
V
V
pm
Laser Degrade Alarm:
Normal Mode, VNO-ALARM
Laser Degraded, VALARM
LSRALM
4.5
0
—
—
5
0.3
V
V
5
Laser Power Monitor Output
LPM
Analog
35
500
1000
mV
Phase Initialization:
Input High, VIH
Input Low, VIL
PHINIT
LVPECL
VCC – 1.0
VCC – 2.3
—
—
VCC – 0.57
VCC – 1.44
V
V
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 PO tracking (–3 dB = 250 mV, +3 dB = 1000 V).
6. Terminated into 200 Ω to GND and 100 Ω line-to-line.
16
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
