dtr-sm2-lc-cwdm OPLINK Communications Inc., dtr-sm2-lc-cwdm Datasheet - Page 4

• Manufacturer Part Number: dtr-sm2-lc-cwdm
• Description: 3.3 Volt 2x10 Lc Connector Oc-3 & Oc-12 Single Mode Transceivers
• Manufacturer: OPLINK Communications Inc.

Transmitter Electrical Interface
Receiver Electrical Interface
Electrical Power Supply Characteristics
Application Notes
Transmitter: When the DATA+ input is at logic HIGH and
DATA- input is at logic LOW, the Laser Diode is ON; and vice
versa. The transmitter is normally enabled (i.e. when the TX
DISABLE control input is not connected). When the TX
DISABLE control input voltage is higher than V
laser is turned off independent of the input data.
The transmitter incorporates an Average Power Control (APC)
loop to stabilize the transmitter average optical output power
against temperature variation. The APC loop always acts to
keep the transmitter average optical output power at a
constant value. Therefore, when the input data is all
continuous “zeroes” or all continuous “ones”, the transmitter
optical output power is a constant level equal to the nominal
average optical output power (not at the “OFF” level or at
the “ON” level).
Receiver: Both differential DATA+ and DATA- outputs are
LV-PECL levels requiring proper termination (see
recommended interface circuit). For optimum performance,
both outputs should be terminated in the same manner, even
if only one is used.
The Signal Detect circuit monitors the level of the incoming
optical signal and generates a logic LOW signal when
insufficient photocurrent is produced. If the SIGNAL
DETECT output is LV-TTL level, no termination is required.
21737-0087, Rev. B
06-12-2003
Input HIGH Voltage
Input LOW Voltage
Data Input Current - HIGH
Data Input Current - LOW
Differential Bias Monitor Voltage
Differential Back Facet Monitor Voltage
Output HIGH Voltage (LV-PECL)
Output LOW Voltage (LV-PECL)
Output HIGH Voltage (LV-TTL)
Output LOW Voltage (LV-TTL)
Output Current
1
Supply Voltage
Supply Current
1
Transmitter Disable Voltage
Transmitter Enable Voltage
With 50 ohm terminated to V
Supply current does not include termination resistor current.
1
Parameter
DTR-xxx-SM2-LC-CWDM & DTR-xxx-SM2-LS-CWDM
Parameter
Parameter
CC
- 2 volts.
RX
TX
(T
1
1
a
= 25°C)
(over Operating Case Temperature, V
(over Operating Case Temperature, V
CC
- 1.3 V, the
V
V
Symbol
Symbol
Symbol
BM+
FM+
I
I
V
CC,TX
CC,RX
V
V
V
V
V
V
V
V
I
I
I
DIS
EN
OH
OH
CC
H
OL
OL
O
IH
L
- V
- V
IL
BM-
FM-
(over Operating Case Temperature, V
4
If the SIGNAL DETECT output is LV-PECL level, a termination
resistor of 160 ohms to GND is required.
Interface circuit: The power supply line should be well-filtered.
All 0.1 µF power supply bypass capacitors should be as close
to the DTR transceiver module as possible. The two front GND
posts (mounting studs) should be grounded to Circuit Ground
or Chassis Ground. The Transmitter has internal 50 ohm
termination (see interface circuit below).
+3.3 V
VPD
V
V
+
Note: If SIGNAL DETECT is LV-PECL, a termination resistor of 160 ohm to GND is required
+3.3 volt
Minimum
V
V
Minimum
Minimum
10
CC
CC
ferrite inductor
VCC
CC
CC
1 H coil or
SIGNAL DETECT
(see Note below)
0.02
3.13
ferrite inductor
0.1
µ
0.5
2.0
2.4
- 1.165
- 1.810
+
1 H coil or
- 1.10
- 1.95
0
10
0
-
-
-
TX DISABLE
-
-
µ
100
circuit ground
0.1
0.1
Capacitor values in F, Resistor values in ohm
+
CC
10
11
DTR-xxx-SM2-LC
13
8
1
2,3,6
= 3.13 to 3.47V)
Typical
Typical
Typical
CC
0.1
MOUNTING
chassis
ground
POSTS
100
3.3
80
75
7
= 3.13 to 3.47V)
-
-
-
-
-
-
-
-
-
-
-
-
12,16
14
15
10
9
µ
130
CC
82
V
V
= 3.13 to 3.47V)
Maximum
Maximum
Maximum
V
V
130
50 ohm line
50 ohm line
50 ohm line
82
CC
CC
CC
CC
0.12
3.47
150
V
V
120
100
0.8
0.8
- 0.880
- 1.475
25
- 0.70
- 1.50
CC
-
CC
-
130
82
130
82
RXDATA+
RXDATA -
TXDATA+
TXDATA -
Units
Units
Units
0.1
mV
µA
µA
mA
mA
mA
V
V
V
V
V
V
V
V