Optoway
BTRS-7840C / BTRS-7840C-SP
1310 nm TX / 1490 nm RX , 3.3V / 1250 Mbps
Single-Fiber Transceiver with
3W-TRX
TM
for Video-Overlay
BTRS-7840C
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FEATURES
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Bi-Directional Single-Fiber
3W-TRX
Transceiver
1310 nm DFB LD Transmitter
1490 nm Receiver
1550 nm Enhanced Band Block
20 dB Power Budget At Least
Link distance up to 40 km
Industry Standard 1 x 9 Footprint
Single +3.3 V Power Supply
0 to 70
o
C Operating
2x5 Package with SC Receptacle (BTRS-7840C)
2x5 Package with Pigtail (BTRS-7840C-XPXXX)
LVPECL Differential Inputs and Outputs
LVTTL Signal Detect Output
Wave Solderable and Aqueous Washable
Class 1 Laser International Safety Standard IEC-60825
Compliant
TM
DESCRIPTION
The BTRS-7840 series is high performance module for
single fiber communications by using 1310 nm transmitter
and 1490 nm receiver.
This module is equipped with
3W-TRX
TM
OE device to reject 1.55 um high power
video signal.
The transmitter section uses a multiple
quantum well 1310 nm DFB laser and is a class 1 laser
compliant according to International Safety Standard
IEC-60825. The receiver section is designed to receive 1490
nm and block 1550 nm signal. This feature is suitable for
IEEE 802.3ah and ITU-T 983.3 application. The receiver
section uses an integrated 1490 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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WDM Gigabit Ethernet Links
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SONET/SDH Equipment Interconnect
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Fiber Channel Links
ORDER INFORMATION
P/No.
Bit Rate Distance
(Gb/s)
(km)
1.25
40
TX
(nm)
1310 DFB
RX
(nm)
1490
Voltage
(V)
3.3
Package
Temp
(
o
C)
0 to 70
TX
Power
(dBm)
2 to -3
RX Sens.
(dBm)
-23
Signal
Detect
LVTTL
BTRS-7840C
SC, 2X5
2-PORTS / 3-WAVELENGTH SPLITTER WITH ANALOG PHOTODIODE
P/No.
VS-1550-PDA
Common Port
Reflect Port
Received
Wavelength (nm) Wavelength (nm) Wavelength (nm)
1310+1490 / 1550 1260 to 1500
1550 to 1570
Responsivity
(A/W)
> 0.90
IM2
(dBc)
-70
IM3
(dBc)
-80
Note: 1. BTRS-XXXXX is SC/PC receptacle type package with standard case
2. BTRS-XXXXXE is SC/PC eceptacle type package with extended case
3. BTRS-XXXXX-APBBB is pigtail type package with different connector, A=S is SC connector, A=F is FC connector,
A=T is ST connector, A=L is LC connector, A=M is MU connector; BBB is the length of fiber in cm.
*******************************************************************************************************************************************************************************
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
6/30/2004 V2.0
Optoway
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
3.6
Vcc
30
Units
o
C
o
C
o
C
V
V
mA
BTRS-7840C
Notes
air flow 1m/sec
10 seconds on leads only
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Recommended Operating Conditions
Parameter
Power Supply Voltage
Operating Temperature
Data Rate
Power Supply Current
Symbol
Vcc
Topr
Icc
Min
3.135
0
Typ
3.3
1250
Max
3.465
70
1300
280
Units / Notes
V
o
C / air flow 1m/sec
Mb/s
mA
Transmitter Specifications (0
o
C < Topr < 70
o
C, 3.135V < Vcc < 3. 465V)
Parameter
Optical
Optical Transmit Power
Output Center Wavelength
Output Spectrum Width
Side Mode Suppression Ratio
Extinction Ratio
Output Eye
Optical Rise Time
Optical Fall Time
Relative Intensity Noise
Total Jitter
Electrical
Data Input Current
–
Low
Data Input Current
–
High
Differential Input Voltage
Data Input Voltage
–
Low
Data Input Voltage -- High
Disable Input Voltage -- Low
Disable Input Voltage -- High
Shut Off Time for TxDis
Symbol
Min
Typ
Max
2
1360
1
Units
dBm
nm
nm
dB
dB
ns
ns
dB/Hz
ns
µA
µA
mV
V
V
V
V
ms
Notes
1
-20 dB Width
Po
-3
1260
λ
σ
λ
SMSR
30
E
R
9
Compliant with IEEE 802.3z
t
r
t
f
RIN
TJ
I
IL
I
IH
V
IH
- V
IL
V
IL
- V
CC
V
IH
- V
CC
V
TDIS,L
V
TDIS,H
t
DIS
-350
300
-2.0
-1.1
0
Vcc
–
1.3
1310
0.26
0.26
-120
0.227
20% to 80% Values
20% to 80% Values
2
350
1600
-1.58
-0.74
0.8
Vcc
1
3
3
TX Output Enabled
TX Ouput Disabled
Notes: 1. Output power is power coupled into a 9/125
µm
single mode fiber.
2. Measured with a 2
7
-1 PRBS.
3. These inputs are compatible with 10K, 10KH and 100K ECL and LVPECL inputs.
*******************************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
E-mail: sales@optoway.com.tw
Fax: 886-3-5979737
http: // www.optoway.com.tw
6/30/2004 V2.0
Optoway
Receiver Specifications (0
o
C < Topr < 70
o
C, 3.135 V < Vcc < 3.465V)
Parameter
Optical
Sensitivity
Maximum Input Power
Signal Detect -- Asserted
Signal Detect -- Deasserted
Signal detect -- Hysteresis
Wavelength of Operation
Optical Return Loss
Electrical
Data Output Voltage Swing
SD Output Voltage -- Low
SD Output Voltage -- High
Signal Detect Assert Time
Signal Detect Deassert Time
Symbol
---
Pin
Pa
Pd
Min
---
-3
---
-31
1.0
1480
20
0.575
0
2.0
Typ
---
---
---
---
---
Max
-23
---
-23
---
1500
Units
dBm
dBm
dBm
dBm
dB
nm
dB
V
V
V
µs
µs
BTRS-7840C
Notes
1
Transition: low to high
Transition: high to low
2,3
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ORL
V
OH
–
V
OL
V
OL
V
OH
AS
MAX
ANS
MAX
0.930
0.8
Vcc+0.3
100
300
OFF to ON
ON to OFF
Notes: 1. Minimum sensitivity and saturation levels at BER 1E-12 for a 2
7
-1 PRBS.
2. At least 30 dB optical isolation for the wavelength 1260 to 1360 nm.
3. At least 30 dB optical isolation for the wavelength 1550 to 1600 nm.
CONNECTION DIAGRAM
PIN
1
2
3
4
5
6
7
8
9
10
MS
Symbol
V
EE
r
V
CC
r
SD
RD−
RD+
V
CC
t
V
EE
t
TxDis
TD+
TD-
MS
Notes
Directly connect this pin to the receiver ground plane
+3.3V dc power for the receiver section
Active high on this indicates a received optical signal.
Receiver Dataout Bar. See recommended circuit schematic
Receiver Dataout. See recommended circuit schematic
+3.3V dc power for the transmitter section
Directly connect this plan to the transmitter ground plane
Transmitter Disable. Connect this pin to +3.3V TTL logic
“1”
to disable module
To enable module connect to TTL logic low
“0”
Transmitter Data In. See recommended circuit schematic
Transmitter Data In Bar. See recommended circuit schematic
Mounting Studs. Connect to Chassis Ground
*******************************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
E-mail: sales@optoway.com.tw
Fax: 886-3-5979737
http: // www.optoway.com.tw
6/30/2004 V2.0
Optoway
RECOMMENDED CIRCUIT SCHEMATIC
depend on customer's PHY
terminate and bias inside Transceiver module
TD-
Z=50R
LVPECL
BTRS-7840C
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Vcc3.3V
TD+
Z=5OR
130R
10
9
8
7
6
TXDis(LVTTL)
130R
1uH
Vcc3.3V
TD-
TD+
TDis
Veet
Vcct
10nF
10uF
1uH
10nF
10uF
PHY DEVICE
BTRS-7XXXC
1
2
3
4
5
10nF
10uF
Vcc3.3V
Veer
Vccr
SD
RD-
RD+
RD+
100R
Z=50R
LVPECL
RD-
Z=5OR
depend on customer's PHY
SD
TO LVTTL STAGE
PACKAGE DIAGRAM
Units in mm
1) SC Receptacle
A) Standard Case
*******************************************************************************************************************************************************************************
OPTOWAY TECHNOLOGY INC.
No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
E-mail: sales@optoway.com.tw
Fax: 886-3-5979737
http: // www.optoway.com.tw
6/30/2004 V2.0
Optoway
BTRS-7840C
B) Extended Case
BTRS-7840C
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BTRS-7840CE
2) Pigtail
BTRS-7840C-SP50
Note: Length L is 50± 3 cm. Other pigtail’s length is available upon request.
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
E-mail: sales@optoway.com.tw
Fax: 886-3-5979737
http: // www.optoway.com.tw
6/30/2004 V2.0
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