DTR-1250-SM2-LC-H3-M OPLINK [OPLINK Communications Inc.], DTR-1250-SM2-LC-H3-M Datasheet - Page 3

• Manufacturer Part Number: DTR-1250-SM2-LC-H3-M
• Description: 3.3V 2x10 LC connector SFF Gigabit Ethernet 1300 & 1550 nm Laser Transceivers
• Manufacturer: OPLINK [OPLINK Communications Inc.]

Transmitter Electrical Interface
Receiver Electrical Interface
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 thenominal average optical output
power (not at the “OFF” level or at the “ON” level).
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
Transmitter Disable Voltage
Transmitter Enable Voltage
With 50 ohm terminated to V
10 Ω
I
b
VCC
LD
3 ΚΩ
3 ΚΩ
GND
Parameter
Parameter
BM +
CC
BM
DTR-1250-SM2-LC & DTR-1250-SM2-LS
- 2 volts.
-
(T
1
1
200 Ω
I
a
mon
= 25°C)
(over Operating Case Temperature Range)
(over Operating Case Temperature Range)
CC
VCC
PD
- 1.3 V, the
3 ΚΩ
3 ΚΩ
V
V
Symbol
Symbol
FM+
BM+
GND
V
V
V
V
V
V
V
V
I
I
I
DIS
EN
OH
OH
H
OL
OL
O
L
IH
- V
- V
IL
BM-
FM-
FM +
FM
3
Receiver: Both differential DATA+ and DATA- outputs are LV-
PECL levels requiring proper termination (see recommended
interface circuits). 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. If the SIGNAL DETECT
output is LV-PECL level, a termination resistor of 160 ohms to
GND is required.
V
V
-
Minimum
Minimum
V
V
CC
CC
CC
CC
0.02
2.4
0.5
2.0
- 1.165
- 1.810
- 1.10
- 1.95
0
0
-
-
-
Pin Assignments
PIN
10 RD+ ( RX DATA OUT+)
2
3
4
5
6
7
8
9
1
VPD
RX GND
RX GND
N/C
N/C
RX GND
V
SD (RX SIGNAL
DETECT)
RD- ( RX DATA OUT-)
CC
RX
FUNCTION
Typical
Typical
100
-
-
-
-
-
-
-
-
-
-
-
-
PIN
20 FM + (FACET MONITOR +)
12 TX GND
13 TX DISABLE
14 TD+ (TX DATA IN +)
15 TD- (TX DATA IN -)
16 TX GND
17 BM - (BIAS MONITOR -)
18 BM + (BIAS MONITOR +)
19 FM - (FACET MONITOR -)
11 V
V
V
Maximum
Maximum
V
V
CC
CC
CC
CC
CC
0.12
150
V
V
0.8
0.8
- 0.880
- 1.475
25
TX
- 0.70
- 1.50
-
CC
-
CC
21737-0283, Rev.A
FUNCTION
06-25-03
Units
Units
mV
mA
µA
µA
V
V
V
V
V
V
V