Preliminary Data Sheet
V23870-Ax311-xx00
(*)
V23870-Ax312-xx00
Bi-Directional Pigtail SFF Transceiver
155 Mb/s, 1550 nm Tx / 1310 nm Rx
(*)
FEATURES
•
Integrated Wavelength Division Multiplexer
(WDM)
•
Bi-Directional Transmission in 2
nd
and 3
rd
optical window
•
Single fiber solution, singlemode fiber pigtail
with different connector options
•
Data rate up to 155 Mbit/s
•
FP Laser Diode with Multi-Quantum Well
structure, wavelength 1550 nm
•
Class 1 Laser Product
•
Incorporated laser driver and PIN-TIA Receiver
with post-amplifier
•
2x5 Small Form Factor Package with
Multisource Footprint
*) Ordering Information
Absolute Maximum Ratings
Operating case temperature
V23870-Ax311-xx00 ....................... 0 to 70
°C
V23870-Ax312-xx00 .................... -40 to 85
°C
Storage Ambient Temperature ................. -40 to 85 °C
Supply voltage .................................................. 3.53 V
Soldering Conditions Temp/Time
Iron Soldering only .................... 400 °C / 10 s
V23870 - Ax31x - xx00
Average Launched Power:
1: -8 ... -14 dBm
3: -3 ... -9 dBm
Temperature Range:
1: 0 ... +70 °C
2: -40 ... +85 °C
Connector:
A: Pigtail Only
B: SC
C: SC/APC 8°
F: MU
H: MU-J
K: LC
Coupling:
(Tx/Rx, Signal Detect)
1: AC/AC, PECL SD
2: DC/DC, PECL SD
5: AC/AC, TTL SD
6: DC/DC, TTL SD
Fiber Optics
JUNE 2002
DESCRIPTION
The Infineon BIDI® transceiver – part of Infineon’s Small Form Factor transceiver family – is based on the Physical
Medium Depend (PMD) sublayer and baseband medium.
Infineon's BIDI-TRX is designed to handle multiple data rates and can be designed into Fast Ethernet, FDDI, Fiber
Channel, ATM-155, SDH STM-1, SONET OC-3, CCTV and other applications as well as different FTTx
applications according to the 100 Mbps EFM standard (IEEE 802.3ah). It is suitable for both, short haul
applications and distances of 20 km and beyond.
The appropriate fiber optic cable is the 9µm singlemode fiber pigtail with different connector options.
The Infineon BIDI transceiver is a single unit comprised of a transmitter, a receiver, WDM filter or beam splitter,
and a singlemode fiber pigtail. This design frees the customer from many alignment and PC board layout
concerns.
This transceiver operates at 155Mb/s from a single power supply (+3.3 V). The full differential data inputs and
outputs are PECL and LVPECL compatible.
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit and receive serial data via a singlemode cable.
Functional Diagram
Fiber Optics
2
V23870-Ax311/2-xx00 BIDI Pigtail SFF transceiver
The receiver component converts the optical serial data into PECL compatible electrical data (RD and RDnot). The
Signal Detect (SD, active high) shows whether an optical signal is present.
The transmitter converts PECL compatible electrical serial data (TD and TDnot) into optical serial data. Data lines
are differentially 100Ω terminated.
The transmitter contains a laser driver circuit that drives the modulation and bias current of the laser diode. The
currents are controlled by a power control circuit to guarantee constant output power of the laser over temperature
and aging.
The power control uses the output of the monitor PIN diode (mechanically built into the laser coupling unit) as a
controlling signal, to prevent the laser power from exceeding the operating limits.
Single fault condition is ensured by means of an integrated automatic shutdown circuit that disables the laser
when it detects laser fault to guarantee the laser Eye Safety.
The transceiver contains a supervisory circuit to control the power supply. This circuit makes an internal reset
signal whenever the supply voltage drops below the reset threshold. It keeps the reset signal active for at least
140 milliseconds after the voltage has risen above the reset threshold. During this time the laser is inactive.
The laser can be disabled by the TxDis input.
Technical Data
The electro-optical characteristics described in the following tables are valid only for use under the recommended
operating conditions.
Recommended Operating Conditions
Operating Temperature Range at Case
1
Operating Temperature Range at Case
Power Supply Voltage
Transmitter
Data Input Differential Voltage
Receiver
Input Center Wavelength
λ
C
1270
1350
nm
V
DIFF
250
1600
mV
2
Symbol
T
C
T
C
V
CC
-V
EE
Min.
0
-40
3.1
Typ.
Max.
+70
+85
Unit
°C
°C
V
3.3
3.53
1
2
For V23870-Ax311-xx00
For V23870-Ax312-xx00
Fiber Optics
3
V23870-Ax311/2-xx00 BIDI Pigtail SFF transceiver
Transmitter
Average Launched Power
3
Average Launched Power
4
Emission wavelength center of range
5
Spectral bandwidth (RMS)
Temperature coefficient of emission wavelength
Extinction Ratio (Dynamic)
Jitter (pkpk)
Rise Time (20% - 80%)
6
Fall Time (20% - 80%)
5
Eye diagram
RIN Noise
Reset Threshold
7
Reset Timeout
7
Power on Delay
Shut Off Time for TxDis
Max Tx Supply Current
Symbol
P
out,max
P
out,max
λ
σ
λ
∆λ(T)
ER
J
PP
tR
tF
Min.
-9
-14
1510
Typ.
Max.
-3
-8
Unit
dBm
dBm
nm
nm
nm/K
dB
1550
1590
3.0
0.5
8.5
1
2.5
2.5
ns
ns
ns
ITU G.957 mask pattern
RIN
V
TH
t
RES
t
PWR_ON
t
DIS
I
TX
90
2.5
140
88
2.75
240
111
-120
2.99
560
140
6
135
dB/√Hz
V
ms
ms
ms
mA
For V23870-A331x-xx00 and into single mode fiber, 9
µm
diameter
For V23870-A131x-xx00 and into single mode fiber, 9
µm
diameter
5
P
opt
= P
out,max
at T=25°C
6
Rise and fall times are measured with the OC-3 filter ON
7
Laser power is shut down if power supply is below V
TH
and switch on if power supply is above V
TH
after t
RES
.
3
4
Fiber Optics
4
V23870-Ax311/2-xx00 BIDI Pigtail SFF transceiver
Receiver
Receiving wavelength center of range
8
Sensitivity (Average Power)
9
Saturation (Average Power)
Signal Detect Assert Level
10
Symbol
λ
R
P
IN
P
SAT
P
SDA
P
SDD
P
SDA
-
P
SDD
Min.
1270
Typ.
1310
Max.
1350
-30
Unit
nm
dBm
dBm
-3.0
-30.5
-41
0.5
4
6
dBm
dBm
dB
Signal Detect Deassert Level
11
Signal Detect Hysteresis
Signal Detect Assert Time
Signal Detect Deassert Time
Data Output Differential Voltage
Rise/Fall Time
S/X Ratio
Max Rx Supply Current
13
12
t
ASS
t
DAS
V
DIFF
t
R
; t
F
SX
I
RX
10
60
0.4
0.8
100
350
1.0
1.5
µs
µs
V
ns
dB
130
mA
Module Electro-Optical Characteristics
Optical Isolation
14
Symbol
ORL
Min.
14
Typ.
Max.
Unit
dB
8
9
P
opt
= P
out,max
at T=25°C
Minimum average optical power at which the BER is less than1x10E–10. Measured with a 10
23
–1 NRZ PRBS as recommended by ANSI
T1E1.2, SONET OC-3, and ITU G.957.
10
An increase in optical power above the specified level will cause the SIGNAL DETECT output to switch from a Low state to a High state.
11
A decrease in optical power below the specified level will cause the SIGNAL DETECT to change from a High state to a Low state.
12
AC/AC for data. Load 50Ω to GND or 100Ω differential. For dynamic measurement a tolerance of 50mV should be added.
13
Supply current excluding Rx output load.
14
Source wavelength is 1310 nm, BiDi Tx and Rx is Off
Fiber Optics
5
V23870-Ax311/2-xx00 BIDI Pigtail SFF transceiver
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