Next generation of 10G SFP transceiver module
World's smallest hot pluggable optical fiber transceiver
Features:
o Data rate up to 10.32 Gbps
o Duplex LC connector
o Small form factor (45 % of SFP)
o Hot pluggable
o SMT mount process compatible
o 10Gb Ethernet compliant
o 8x Fibre Channel compliant
o 850 nm multimode transmission
o Full SFF8472 diagnostic monitoring
o CML inputs and outputs
o TTL signal detect indicator
o Single 3.3 V power supply
o Class 1 laser product (EN60825-1)
o RoHS compliant
Applications & Industries:
Compliant with:
o Rack to rack
o IEEE802.3ae 10G BASE-SW/SR
o Data Centers
o 10G Fiber Channel 1200-m5-SN-I and 1200-M6-SN-I standard
o Premise
o 8.5G Fiber Channel 800-m5-SN-I and 800-M6-SN-I standard
o Switches and Routers
o 4.25G Fiber Channel 400-m5-SN-I and 1400-M6-SN-I standard
o Military
o 2.125G Fiber Channel 200-m5-SN-I and 200-M6-SN-I standard
o Avionics
o 1.06625G Fiber Channel 100-m5-SN-I and 100-M6-SN-I std.
o Oil & Gas
o IEEE802.3z Gigabit Ethernet Standard
o Broadcast
o SFF8472 diagnostic monitoring interface Duplex LC
µSFP - 10Gbps hot pluggable optical fiber transceiver
The µSFP pluggable optical fibre transceiver is a compact solution for 1 Gbps to 10 Gbps optical fibre
datalinks using a duplex LC connector interface. It comes in space saving package offering very small
footprint (approx. 14 x 21 mm) and low height (11.4 mm).
10G Form Factor Comparation: µSFP vs standard SFP
The µSFP transceiver is fully compliant with IEEE802.3ae 10G BASE-SW/SR and 800-M5/6-SN-I 8.5G Fibre
Channel standards. Backwards compatible with and supports 1G Ethernet and 1x/2x/4x Fibre Channel
standards. Its electrical interface is full compatible with SFP/SFP+ specification, enabling seamless
integration in existing designs.
µSFP transmitter employs 850 nm vertical cavity surface emitting laser (VCSEL) and a receiver with a PIN
photodiode. Data input and output ports employs CML differential signalling with back termination on the
device. The µSFP transceiver supports full-featured two-wire SFF8472 diagnostic monitoring protocol,
offering the ability to monitor real-time parameters of the SFP such as optical output power, optical input
power, temperature, laser bias current, and transceiver supply voltage. In addition, µSFP offers separate
hardware control signals for rate selection and Tx disabling, as well as signal lines for reporting Tx fault and
LOS conditions.
For easy manufactutring µSFP comes with connector compatible with standard pick-and-place SMT
assembly process. Its metal case is soldered to the PCB, which ensures smooth sliding and secure latching
of transceiver device, even in higher vibrations applications. It is possible to remove µSFP transceiver during
operation and to replace it with other device just by using a simpistic extraction tool.
Data rates: 1.0625 Gbps – 10.32 Gbps
µSFP - 10Gbps hot pluggable optical fiber transceiver
Interfacing the Transceiver
µSFP transceiver support the 2-wire communication protocol as defined in the SFF-8471.
The Standard SFP+ ID provides access to identification that describes the transceiver's capabilities,
standard interfaces, manufacturer, and other information.
Base Address A0h
Byte
Address
0 - 95
96 - 127
Content
Serial Transceiver ID as Defined in
SFP MSA
Transceiver Specific
Read Only
128 - 255
Reserved
Base Address A2h
Byte
Address
0 - 55
56-95
96-119
120 - 127
128 - 247
248 - 255
Content
Alarm & Warnings
Thresholds & Limits
External calibration constants (not
used)
Values from real time diagnostic
monitoring
Reserved
Customer specific, writable area
Reserved
Digital Diagnostic Functions
Additionally transceiver provide enhanced digital diagnostic monitoring interface, which allows real-time
access to the device operating parameters such as transceiver temperature, laser bias current, transmitted
optical power, received optical power and transceiver supply voltage. It also defines a sophisticated system
of alarm and warning flags, which alerts end-user when particular parameters are outside of factory set
normal range.
Alarm/Warning threshold
A2h address
0-1
2-3
4-5
6-7
8-9
10-11
12-13
14-15
16-17
18-19
20-21
22-23
24-25
26-27
28-29
30-31
32-33
34-35
36-37
38-39
Description
Temperature High Alarm
Temperature Low Alarm
Temperature High Warning
Temperature Low Warning
Voltage High Alarm
Voltage Low Alarm
Voltage High Warning
Voltage Low Warning
Tx Bias High Alarm
Tx Bias Low Alarm
Tx Bias High Warning
Tx Bias Low Warning
Tx Power High Alarm
Tx Power Low Alarm
Tx Power High Warning
Tx Power Low Warning
Rx Power High Alarm
Rx Power Low Alarm
Rx Power High Warning
Rx Power Low Warning
Unit
deg
deg
deg
deg
V
V
V
V
mA
mA
mA
mA
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Value
75
-5
70
0
3..63
2.97
3.465
3.134
102
22
102
22
3.5
14.4
0.5
8.4
3.5
-17.8
0.5
-13.8
µSFP - 10Gbps hot pluggable optical fiber transceiver
Block Diagram
µSFP - 10Gbps hot pluggable optical fiber transceiver
Absolute Maximum Ratings
PARAMETER
SYMBOL
MIN
MAX
UNITS
Storage Temperature
TS
-40
100
C
Supply Voltage
Vcc
-0.3
4.0
V
Input Voltage
VIN
-0.3
4.0
V
-0.3V
VCC + 0.3V
VCC - 1V
VCC + 0.3V
v
VCC - 2.5V
VCC - 0.5V
v
-1
5
mA
40
mA
Voltage Range at TX_DISABLE,
TX_FAULT, LOS
Voltage Range at ROUT+, ROUTVoltage at TIN+, TINCurrent Range into FAULT, LOS
Current into ROUT+, ROUT-
Recommended Operating Conditions
PARAMETER
SYMBOL
MIN
MAX
UNITS
Case operating Temperature
Tc
-40
75
C
Supply Voltage
Vcc
2.97
Supply Current
Icc
3.6
V
230
mA
Receiver Electro-optical Characteristics
PARAMETER
Optical Input Powermaximum
Operating Center
Wavelength
Differential Output Voltage
SYMBOL
CONDITIONS
MIN
PIN
λc
840
VDIFF
TYP.
MAX
UNITS
5
dBm
860
nm
285
mV
Receiver Loss of Signal
Assert Time
(off to on)
tA,RX_LOS
2.3
80
µs
Receiver Loss of Signal
Assert Time
(on to off)
tD,RX_LOS
2.3
80
µs
µSFP - 10Gbps hot pluggable optical fiber transceiver
Transmitter Electro-optical Characteristics
PARAMETER
Output Optical Power
(50/125mm fiber, NA=0.20)
(62.5/125mm fiber, NA=0.275)
SYM.
CONDITIONS
MIN
TYP.
MAX
UNITS
-1.4
dBm
860
nm
Pout
-9
Center Wavelength
λc
840
Spectral Width (RMS)
∆λ
Pout=0.5 mW
10.3125Gb/s mod.
0.4
nm
Relative Intensity Noise
Max. Pout TX-DISABLE
Asserted
RIN
10.3125Gb/s mod.
130
dB/Hz
Differential Input Voltage
850
Poff
Vdiff
Data rate = 1.0625Gbps to
4.25Gbps
Data rate = 4.25Gbps to
10.32Gbps
0.2
2.4
0.075
0.8
Vp-p
t_off
Time from rising edge of
DISABLE input
signal to IBIAS = IBIASOFF
and IMOD = IMODOFF
1
µs
TX_DISABLE Negate Time
t_on
Time from fal l ing edge of
DISABLE to IBIAS
and IMOD at 90% of steady
state when
FAULT = 0 before reset
500
µs
Time to initialize, include reset
of
TX_FAULT
t_init
Time from power-on or
negation of FAULT
using DISABLE
100
ms
TX_FAULT from fault to
assertion
t_fault
Time from fault to FAULT on,
CFAULT 20pF,
RFAULT = 4.7k
10
µs
TX_DISABLE time to start reset
t_reset
Time DISABLE must be held
high to reset FAULT
TX_DISABLE Assert Time
5
µs
µSFP - 10Gbps hot pluggable optical fiber transceiver
Eye Diagrams
1G
10G
µSFP - 10Gbps hot pluggable optical fiber transceiver
Mechanical Specifications
µSFP - 10Gbps hot pluggable optical fiber transceiver
PCB Layout
µSFP - 10Gbps hot pluggable optical fiber transceiver
Pin Descriptions
PIN
NAME
FUNCTION
Mode-Select Input, TTL/CMOS. Set the MSEL pin or MODE_SEL bit (set by
the 3-wire digital interface)
to logic-high for high-bandwidth mode. Setting MSEL and MODE_SEL logiclow for high-gain mode.
The MSEL pin is internally pulled down by a 75k resistor to ground
Loss-of-Signal Output, Open Drain. The default polarity of LOS is high when
the level of the input
signal is below the preset threshold set by the SET_LOS DAC. Polarity of the
LOS function can be
inverted by setting LOS_POL = 0. The LOS circuitry can be disabled by setting
the bit LOS_EN = 0.
N.C.
1
RATE_SEL0
2
LOS
3
C2CK
4
C2D
5
TX_FAULT
6
TX_DISABLE
7
SCL
N.C.
Transmitter Fault Output, Open Drain. Logic-high indicates a fault condition.
FAULT remains high
even after the fault condition has been removed. A logic-low occurs when the
fault condition has
been removed and the fault latch has been cleared by the DISABLE signal.
Transmitter Disable Input, TTL/CMOS. Set to logic-low for normal operation.
Logic-high or open
disables both the modulation and bias current. Internal ly pul led up by an 8k
resistor to VCC.
I2C Serial clock.
8
SDA
I2C Serial data.
9
MOD_DEF0
10
11
12
13
14
15
16
17
VCC_RX
GND
GND
GND
VCC_TX
GND
GND
ROUT_P
Power Supply. Provides supply voltage to the receiver block.
Ground
Ground
Ground
Power Supply. Provides supply voltage to the transmitter block.
Ground
Ground
Non inverted Receive Data Output, CML. Back-terminated for 50 Ω load.
18
19
20
21
ROUT_N
GND
GND
TIN_P
Inverted Receive Data Output, CML. Back-terminated for 50Ω load.
Ground
Ground
Non inverted Transmit Data Input, CML
22
TIN_N
23
GND
Module Absent, connected to GND in the module.
Inverted Transmit Data Input, CML
Ground
µSFP - 10Gbps hot pluggable optical fiber transceiver
µSFP - 10Gbps hot pluggable optical fiber transceiver