AFBR-1012 Transmitter and AFBR-2012 Receiver are de-
signed to transmit/ receive up to 25MBit/s optical data
which are biphase coded (up to 50Mbaud). Both are
packaged in 4-pin transfer molded, low-cost packages
ready for assembly into MOST® plastic fiber optic connec-
tor receptacles.
The transmitter utilizes a 650 nm LED source with inte-
grated optics for efficient coupling into 1mm Polymer Op-
tical Fiber (POF), and the receiver contains a high speed
PIN diode to receive this light.
Input/output data has TTL switching levels, compatible
with MOST® Network Interface Controller ICs.
These optical components are specified for operation
over a -40°C to +95°C temperature range, and meet the
reliability requirements of automotive applications. In the
absence of data activity, the receiver switches to very low
power mode. While in this mode, the PIN diode can sense
new data activity and switch the receiver back to full op-
eration.
Features
Operating @ 3.3V or 5V (+/-5% each) Power supply
Operating temperature range -40°C to +95°C
TTL Data Input/ Output (Logic to Light Function)
Power down mode
During the low power mode a receiver STATUS-pin
indicates if modulated light is received (Light on ->
STATUS = low). The power supply of the whole MOST
device can be switched on with this Status-pin.
Duty Cycle Adjust (DCA), yields to enhanced SP1 input
range
650nm for working in a low attenuation range of PMMA
Fiber
-25dBm guaranteed sensitivity @ 650nm
Fully compliant to “MOST® Specification of Physical
Layer Rev 1.1”
RoHS compliant (Lead free and halogen free)
Lead is flash gold
Low power consumption
Photo current sensing, network activity detection and
Low Power Mode (I
CC
< 10μA)
Additional Low Power Mode (I
CC
< 15μA) for the
transmitter when SP1 input is low
Signal detect and Status Output
Pulse width control
Applications
Optical Transmitter and Receiver for MOST® 50 Mbaud
systems (a full description of the MOST® 50 Mbaud
system is available at www.mostcooperation.com)
Absolute maximum ratings
Parameter
Supply Voltage
[1]
Storage Temperature
Soldering Temperature
(distance to package >3mm; t≤10s)
[2]
Voltage at any PIN
Electrostatic Voltage Capability
[3]
ESD
Symbol
V
CCMax
T
STG
T
S
Min.
-0.5
-40
Max.
6.0
110
260
Units
V
°C
°C
V
kV
-0.5
VCC+0.5
2.0
Notes:
1. Maximum supply voltage without causing damage
2. For more information regarding the solder process see Application Note 5420 (Handling, Storage, Operating and Processing)
3. ESD Capability for all Pins HBM (human body model) according JESD22-A114B
Recommended operating conditions
Parameter
Supply Voltage low
Supply Voltage high
Operating temperature (ambient)
[1]
Symbol
V
CC_l
V
CC_hl
T
A
Min.
3.135
4.75
-40
Max.
3.465
5.25
95
Units
V
V
°C
Notes:
1. For more information see Application Note 5420 (Handling, Storage, Operating and Processing)
All the data in this specification refers to the operating conditions above and over lifetime unless otherwise stated.
Part Number Options
Part Number
AFBR-1012S/AFBR-2012S
AFBR-1012L/AFBR-2012L
AFBR-1012M/AFBR-2012M
Part Description
Transmitter/Receiver – Short Leads
Transmitter/Receiver – Long Leads
Transmitter/Receiver - Medium Leads
Solder Heat Resistance
Lead dip in liquid solder of 260°C for 10 Sec.
acc. JEDEC standard JESD22-B106-C
(for more information see Application Note 5420)
2
AFBR-1012 (Transmitter)
DC Characteristics
Parameter
Low Level Input voltage
High Level Input Voltage
Input Leakage Current
(VCC = 5.0V; VI = 0V or VI =5.0V)
Input Capacitance
Input Resistance
Supply Current Full Power Mode
[1]
Supply Current Low Power Mode
[2]
Symbol
V
IL
V
IH
I
L
C
I
R
I
I
CC
I
LP2
Min.
-0.3
2.0
Typ.
Max.
0.8
VCC+0.3
+/-20
7
Units
V
V
μA
pF
kΩ
mA
μA
2
25
15
Notes:
1. The current through the LED and therefore the optical output power and overall power consumption depends on the settings of R
EXT
.
The nominal value for R
EXT
is 15k. With R
EXT
= 30k the optical output power is about -3dB of the nominal value.
Important: The external resistor of R
EXT
must be within the range of 13.5kΩ to 33kΩ. For values out of this range functionality may not be given over the
whole temperature range and the device lifetime.
2. If the transmitter is in full power mode it is switched OFF 1ms (max) after Tx DATA is low. If the transmitter is in low power mode it is switched ON
6ms (max) after Tx Data transmission starts.
AC Electrical Characteristics
Parameter
Power Up Time
Data Power Down Time
Symbol
T
PU
T
PD
Min.
Typ.
0.016
0.01
Max.
6
1.0
Units
ms
ms
Optical Signal Characteristics 45.158Mbaud (44.1kHz)
(22.5 MBit/s MOST Data, V
CC
= 3.135 … 3.465V or 4.75 … 5.25V, R
EXT
= 15kOhm)
Parameter
Peak wavelength
Temperature coefficient λPEAK
Spectral Bandwidth (FWHM)
Average Output Power coupled into plastic fiber
[1]
Average Output Power coupled into plastic fiber
(if R
EXT
= 13.5k is used instead of R
EXT
=15k)
[1]
Optical Output Power “Light off ”
[2]
Optical Rise Time (20% - 80%)
[4]
Optical Fall Time (80% - 20%)
[4]
Extinction Ratio
[4,6]
Pulse Width Variation
[3,4,5]
Average Pulse Width Distortion
[3,4]
Data Dependent Link Jitter
[3,4]
Uncorrelated Link Jitter
[3,4]
Positive Overshoot within 0UI … 2/3UI
[4,6]
Negative Overshoot within -1UI … -1/4UI
[4,6]
High Level Signal Ripple between 2/3UI and 3/4UI
Symbol
λ
Peak
TC
λ
Delta
λ
P
opt
P
opt
P
OFF
t
r
t
f
r
e
t
PWV
t
APWD
t
DDJ
t
UJ
Min.
630
Typ.
650
0.16
20
Max.
685
30
-2.0
-1.5
-50
Units
nm
nm/K
nm
dBm
dBm
dBm
ns
ns
dB
ns
ns
ns
ns
%
%
%
-8.0
-7.5
-5.2
-4.7
2.5
3.5
10
20.0
-1.4
0.2
0.05
-20
-10
-10
15
5.98
5.98
24.29
1.4
0.77
0.33
40
20
10
Notes:
1. Average value when transmitting modulated light @signal timing parameters. The output power coupled into plastic fiber Popt is measured with
a large area detector at the end of 30cm POF fiber with a NA = 0.5 which is ideally coupled to the transmitter
2. Average value when signal on Tx_Data is low
3. The electrical input signal has to fulfill the following requirements: t
pwv(min)
= 20.1ns, t
pwv(max)
= 24.1ns, t
tAPWD(min)
= -1.5ns and t
tAPWD(max)
=
1.5ns, t
DDJ(max)
= 0.22ns, t
UJ(max)
= 0.10ns
4. Characterized with Avago Characterization Boards
5. Limits for 2UI are 42.2 … 46.4ns and for 3UI they are 64.3 … 68.5ns.
6. Top and Base level measured at least over 10UIs.
3
Optical Signal Characteristics 49.152Mbaud (48kHz)
(24.576 MBit/s MOST Data, V
CC
= 3.135 … 3.465V or 4.75 … 5.25V, R
EXT
= 15k)
Parameter
Peak wavelength
Temperature coefficient λPEAK
Spectral Bandwidth (FWHM)
Average Output Power coupled into plastic fiber
[1]
Average Output Power coupled into plastic fiber
(if R
EXT
= 13.5k is used instead of R
EXT
=15k)
[1]
Optical Output Power “Light off ”
[2]
Optical Rise Time (20% - 80%)
[4]
Optical Fall Time (80% - 20%)
[4]
Extinction Ratio
[4,6]
Pulse Width Variation
[3,4,5]
Average Pulse Width Distortion
[3,4]
Data Dependent Link Jitter
[3,4]
Uncorrelated Link Jitter
[3,4]
Positive Overshoot within 0UI … 2/3UI
[4,6]
Negative Overshoot within -1UI … -1/4UI
[4,6]
High Level Signal Ripple between 2/3UI and 3/4UI
Symbol
λ
Peak
TC
λ
Delta
λ
P
opt
P
opt
P
OFF
t
r
t
f
r
e
t
PWV
t
APWD
t
DDJ
t
UJ
Min.
630
Typ.
650
0.16
20
Max.
685
30
-2.0
-1.5
-50
Units
nm
nm/K
nm
dBm
dBm
dBm
ns
ns
dB
ns
ns
ns
ns
%
%
%
-8.0
-7.5
-5.2
-4.7
2.5
3.5
10
18.4
-1.28
0.2
0.05
-20
-10
-10
15
5.49
5.49
22.3
1.28
0.71
0.31
40
20
10
Notes:
1. Average value when transmitting modulated light @signal timing parameters. The output power coupled into plastic fiber Popt is measured with
a large area detector at the end of 30cm POF fiber with a NA = 0.5 which is ideally coupled to the transmitter
2. Average value when signal on Tx_Data is low
3. The electrical input signal has to fulfill the following requirements: t
pwv(min)
= 18.4ns, t
pwv(max)
= 22.3ns, t
tAPWD(min)
= -1.28ns and t
tAPWD(max)
=
1.28ns, t
DDJ(max)
= 0.2ns, t
UJ(max)
= 0.09ns
4. Characterized with Avago Characterization Boards
5. Limits for 2UI are 38.72 … 42.66ns and for 3UI they are 59.06 … 63.01ns.
6. Top and Base level measured at least over 10UIs.
Want to visit exhibitions and technical conferences of industry-leading companies?Want to listen to technical reports, workshops and keynote speeches?Want to receive free tickets worth 2,000 yuan ?
We...
Once launched, the 6410 development board of Liyutai has received wide attention from all walks of life and is favored by new and old customers, thanks to its unique design concept. Its design focuses...
I want to write a GRBL host computer, but I don't know what the protocol is, and the GRBL code is too complicated to read.
As for the control transmission instructions, it is OK, that is, sending mult...
I have an STM32 F407 discovery, and I want to try serial communication, but I haven't been able to adjust it after an entire afternoon... It doesn't seem to be a difficult thing, but I can't solve it....
[color=#333333] At present, wireless technology is widely used in many automation industries in China. Various large-scale industrial sites have widely adopted the independently developed and promoted...
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
The Portable Digital Data Acquisition System (PDDAS) uses LabVIEW Real-Time and PXI to control the wind tunnel test and record air pressure data from 128 different channels.
"The LabVIEW Real-...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
My colleague and I spent the day chatting in the hotel bar. We had met with several customers. We were both wondering how come these engineers we were meeting knew almost nothing about analog techn...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
In the analysis of electronic circuits, static analysis (also known as DC analysis) is the basis of circuit analysis. However, it is well known that electronic components are nonlinear, so the anal...[Details]
RS-422 and RS-485 are both serial data interface standards, which were developed and published by the Electronic Industries Association (EIA). RS-422 defines a balanced communication interface with a ...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Describe how to meet the challenges of complexity with a modern wiring design toolset. Option codes and expressions can simulate the variables of an automotive project. A full-featured tool suite c...[Details]
Integrated technical exchanges
京公网安备 11010802033920号
EEWORLD
