Optoway
BTR-3721G
FEATURES
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BTR-3721G
***********************************************************************************************************************************************************************
(RoHS Compliant)
DESCRIPTION
1550 nm TX / 1310 nm RX , 3.3V / 125 Mbps Single-Fiber Transceiver
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Single Fiber Bi-Directional Transceiver
1550 nm LD Transmitter
1310 nm Receiver
Distance Up to 20 km
Industry Standard 1 x 9 Footprint
Single +3.3 V Power Supply
PECL Differential Inputs and Outputs
0 to 70
o
C Operating Temperature
RoHS Compliant
Wave Solderable and Aqueous Washable
Class 1 Laser International Safety Standard IEC-60825
Compliant
The BTR-3721G series is high performance module for
single fiber communications by using 1550 nm transmitter
and 1310 nm receiver. The transmitter section uses a
multiple quantum well laser and is a class 1 laser
compliant according to International Safety Standard
IEC-60825. The receiver section uses an integrated 1550
nm detector preamplifier (IDP) mounted in an optical
header and a limiting post-amplifier IC. A PECL logic
interface simplifies interface to external circuitry.
LASER SAFETY
This single mode transceiver is a Class 1 laser product. It
complies with IEC-60825 and FDA 21 CFR 1040.10 and
1040.11. The transceiver must be operated within the
specified temperature and voltage limits. The optical ports
of the module shall be terminated with an optical connector
or with a dust plug.
APPLICATIONS
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Fast Ethernet 100 Mb/s Links
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SONET/SDH Equipment Interconnect
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Soldering Temperature
Power Supply Voltage
Input Voltage
Output Current
Symbol
Tstg
Topr
---
Vcc
---
Iout
Min
-40
0
0
GND
0
Max
85
70
260
4.5
Vcc
30
Units
o
C
o
C
o
C
V
V
mA
Notes
10 seconds on leads only
Recommended Operating Conditions
Parameter
Power Supply Voltage
Operating Temperature
Data Rate
Power Supply Current
Symbol
Vcc
Topr
Min
3.13
0
Typ
3.3
125
240
Max
3.47
70
Units
V
o
C
Mb/s
mA
**********************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
Transmitter Specifications (0
o
C < Topr < 70
o
C, 3.13V < Vcc < 3.47V)
Parameter
Optical
Optical Transmit Power
Output Center Wavelength
Output Spectrum Width
Extinction Ratio
Output Eye
Optical Rise Time
Optical Fall Time
Electrical
Data Input Current
–
Low
Data Input Current
–
High
Differential Input Voltage
Data Input Voltage
–
Low
Data Input Voltage -- High
Symbol
Min
Typ
Max
Units
BTR-3721G
Notes
***********************************************************************************************************************************************************************
Po
-14
---
-8
dBm
1
1480
1580
nm
λ
---
---
3
nm
RMS (σ)
∆λ
E
R
8.2
---
---
dB
Compliant with Bellcore GR-253-CORE and ITU recommendation G.957
t
r
2
ns
10% to 90% Values
t
f
2
ns
10% to 90% Values
I
IL
I
IH
V
IH
- V
IL
V
IL
- V
CC
V
IH
- V
CC
-350
350
300
-2.0
-1.1
-1.58
-0.74
µA
µA
mV
V
V
2
2
Notes: 1. Output power is power coupled into a 9/125
µm
single mode fiber.
2. These inputs are compatible with 10K, 10KH and 100K ECL and PECL inputs.
Receiver Specifications (0
o
C < Topr < 70
o
C, 3.13 V < Vcc < 3.47V)
Parameter
Optical
Sensitivity
Maximum Input Power
Signal Detect -- Asserted
Signal Detect -- Deasserted
Signal detect -- Hysteresis
Wavelength of Operation
Electrical
Data Output Voltage
–
Low
Data Output Voltage
–
High
SD Output Voltage -- Low
SD Output Voltage -- High
Symbol
---
Pin
Pa
Pd
Min
---
-8
---
-45
1.0
1260
V
OL
- V
CC
V
OH
- V
CC
V
OL
- V
CC
V
OH
- V
CC
-2.0
-1.1
-2.0
-1.1
Typ
---
---
---
---
---
Max
-32
---
-32
---
4.0
1360
-1.58
-0.74
-1.58
-0.74
Units
dBm
dBm
dBm
dBm
dB
nm
V
V
V
V
Notes
1
Transition: low to high
Transition: high to low
2
3
3
3
3
Notes: 1.Minimum sensitivity and saturation levels at BER 1E-=10 for a 2
23
-1 PRBS.
2. At least 30 dB optical isolation for the wavelength 1480 to 1580 nm.
3. These inputs are compatible with 10K, 10KH and 100K ECL and PECL outputs.
***********************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
CONNECTION DIAGRAM
Receiver Signal Ground 1 (Rx GND)
Receiver Data Out 2 (RD+)
Receiver Data Out Bar 3 (RD−)
Signal Detect 4 (SD)
Receiver Power Supply 5 (Rx Vcc)
Transmitter Power Supply 6 (Tx Vcc)
Transmitter Data In Bar 7 (TD−)
Transmitter Data In 8 (TD+)
Transmitter Signal Ground 9 (Tx GND)
N/C
BTR-3721G
***********************************************************************************************************************************************************************
TOP VIEW
N/C
PIN
1
2
3
4
5
6
7
8
9
Symbol
Rx GND
RD+
RD−
SD
Rx Vcc
Tx Vcc
TD−
TD+
Tx GND
Notes
Directly connect this pin to the receiver ground plane
See recommended circuit schematic
See recommended circuit schematic
Active high on this indicates a received optical signal
+3.3V dc power for the receiver section
+3.3V dc power for the transmitter section
See recommended circuit schematic
See recommended circuit schematic
Directly connect this plan to the trransmitter ground plane
RECOMMENDED CIRCUIT SCHEMATIC
The split-load terminations for ECL signals need to be located at the input of devices receiving those ECL signals. The power
supply filtering is required for good EMI performance. Use short tracks from the inductor L1/L2 to the module Rx Vcc and Tx
Vcc. A GND plane under the module is required for good EMI and sensitivity performance.
***********************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw
3/1/2006 V1.0
Optoway
PACKAGE DIAGRAM
Units in mm
BTR-3721G
***********************************************************************************************************************************************************************
Note:
Specifications subject to change without n
Note:
Specifications subject to change without notice.
***********************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw
3/1/2006 V1.0
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