TRSL-7350W Datasheet, PDF (3/5 Pages) Optoway Technology Inc – 3.3V / 1550 nm / 1.25 Gbps SFF LC 2X10 SINGLE-MODE TRANSCEIVER

Optoway
TRSL-7350W / TRSL-7350AW
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ANALOG DIAGNOSTICS FUNCTIONS
Parameter
Symbol
Min
Typ
Max
Units
Notes
Transmitter
Laser Bias Current Monitor
Bmon+, Bmon-
0
Vcc
V
1
Monitor Photodiode Current Monitor Pmon+,Pmon-
0
Vcc
V
2
Receiver
Received Photocurrent
Rpd
0
1
mA
3
Photodiode Responsivity
R
0.5
0.9
1.0
A/W
Applied Voltage at VpdR pin
Vpd
2.4
Vcc
V
3
Notes: 1. PIN 17 and 18 provide an analog voltage output proportional to the laser bias current, based on the following
formula: Ibias = V (Bmon+ - Bmon-) / 10 Ω. See below the equivalent circuit.
2. PIN 19 and 20 provide an analog voltage output proportional to the monitor photodiode current, based on the
following formula: Imon = V (Pmon+ - Pon-) / 200Ω. See below the equivalent circuit.
3. PIN 1 is used to monitor the received photocurrent. It must be connected to a positive voltage within the specified
above. The received power is given by the photocurrent multiplied by the photodiode responsivity.
VCC
VCC
LD
I bias
3K
10ohm
3K
bias
circuit
BM+
BM-
I mon
Monitor PD
3K
200ohm
3K
Pmon+
RX PD
Pmon-
Vpdr
I pd
control
circuit
T
Analog Monitoring Function Connections
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: [phone]
Fax: [phone]
E-mail: [e-mail] http: // www.optoway.com.tw 6/30/2004 V2.0