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FIBER OPTIC RECEIVING MODULE
TORX198
FIBER OPTIC RECEIVING MODULE
WITH ANALOGUE OUTPUT TO
MONITOR OPTICAL FLUX FOR
SIMPLEX DIGITAL SIGNAL
TRANSMISSION
Data rate: DC to 6 Mb / s (NRZ code)
Transmission distance:
Up to 40 m (APF)
TTL Interface
ATC (Automatic Threshold Control)
Circuit is used for stabilized output at a wide
range of optical power level.
Wide Dynamic Range.
Analogue output to monitor optical flux.
1. Maximum Rating (Ta=25°C)
Characteristics Symbol Rating Unit
Storage Temperature Tstg −40 to 85 °C
Operating Temperature Topr −40 to 85 °C
Supply Voltage VCC −0.5 to 7 V
Low Level Output Current IOL 20 mA
High Level Output Current IOH −1 mA
Soldering Temperature Tsol 260 (Note 1) °C
Note 1: Soldering time ≤ 3 s (More than 1 mm apart from the package).
Unit: mm
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2. Recommended Operating Conditions
Characteristics Symbol Min Typ. Max Unit
Supply Voltage VCC 4.75 5.0 5.25 V
High Level Output Current IOH ― ― −60 μA
Low Level Output Current IOL ― ― 1.2 mA
3. Electrical and Optical Characteristics (Ta = 25°C, VCC = 5 V)
Characteristics Symbol Test Condition Min Typ. Max Unit
Data Rate NRZ code (Note 2) DC ― 6 Mb / s
Using APF (Note 3), TOTX197 0.2 ― 40 m
Transmission Distance
Using PCF (Note 4), TOTX196 0.2 ― 1000 m
Pulse Width Distortion (Note 5) Δtw
Pulse width 165 ns
Pulse cycle 330 ns
CL = 10 pF
−55 ― 55 ns
Maximum Receivable Power PMAX 6 Mb / s, APF, TOTX197 (Note 6) −9 ― ― dBm
Minimum Receivable Power PMIN 6 Mb / s, APF, TOTX197 (Note 6) ― ― −28 dBm
APF, PIN = −9 dBm 3.4 3.8 4.5 V
Analogue Output Voltage VOA
APF, PIN = −28 dBm 1.2 1.5 1.9 V
Current Consumption ICC ― 22 40 mA
High Level Output Voltage VOH 4.6 ― ― V
Low Level Output Voltage VOL ― ― 0.5 V
Note 2: High level output when optical flux is received. Low level output when optical flux is not received.
Note 3: All Plastic Fiber (980 / 1000 μm)
Note 4: Plastic Cladding Silica Fiber (200 / 300 μm)
Note 5: Between input of a fiber optic transmitting module and digital output of TORX198.
Note 6: BER ≤ 10−9, valued by peak.
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Example of Typical Characteristics (Note 7)
Note 7: There give characteristic examples, and its values are not guaranteed.
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Note7: There give characteristic examples, and its values are not guaranteed.
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5. Application Circuit
6. Applicable Optical Fiber with Fiber Optic Connectors
(APF)
TOCP100−□□B, TOCP155−□□B, TOCP100P−□□B, TOCP155P−□□B
(PCF)
TOCP100Q−□□B, TOCP150Q−□□B, TOCP100X−□□B, TOCP150X−□□B
CF−1071 series
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7. Precaution on Use
(1) Maximum rating
The maximum ratings are the limit values which must not be exceeded during operation of device.
None of these rating value must not be exceeded. If the maximum rating value is exceeded, the
characteristics of devices may never be restored properly. In extreme cases, the device may be
permanently damages.
(2) Soldering
Optical modules are comprised of internal semiconductor devices. However, in principle, optical
modules are optical components. During soldering, ensure that flux does not contact with the emitting
surface or the detecting surface. Also ensure that proper flux removal is conducted after soldering.
Some optical modules come with a protective cap. The protective cap is used to avoid malfunction
when the optical module is not in use. Note that it is not dust or waterproof.
As mentioned before, optical modules are optical components. Thus, in principle, soldering where
there may be flux residue and flux removal after soldering is not recommended. Toshiba recommend
that soldering be performed without the optical module mounted on the board. Then, after the board
has been cleaned, the optical module should be soldered on to the board manually.
If the optical module cannot be soldered manually, use non−halogen (chlorine−free) flux and make
sure, without cleaning, there is no residue such as chlorine. This is one of the ways to eliminate the
effects of flux. In such a cases, be sure to check the devices’ reliability.
(3) Noise resistance
It is believed that the use of optical transfer devices improve noise resistance. In theory, optical fiber
is not affected by noise at all. However, receiving modules which handle signals whose level is
extremely small, are susceptible to noise.
TOSLINK improve noise resistance to use a conductive case. However, the current signal output by
the optical receiving modules’ photodiode is extremely small. Thus, in some environments, shielding
the case may not achieve sufficient noise resistance.
First systems which incorporate TOSLINK, Toshiba recommend testing using the actual device to
check its noise resistance.
Use a simple noise filter on TOSLINK fiber optic transceiving module’s power line. If the ripple in the
power supply used is significant, reinforce the filter.
The optical module is to be used in an area which is susceptible to radiated noise, increase the
shielding by covering the optical module and the power line filter with a metallic cover.
(4) Vibration and shock
This module is plastic sealed and has its wire fixed by resin. This structure is relatively resistant to
vibration and shock. In actual equipment, there are sometime cases in which vibration, shock, or
stress is applied to soldered parts or connected parts, resulting in lines cut. A care must be taken in
the design of equipment which will be subject to high levels of vibration.
(5) Attaching the fiber optic receiving module
Solder the fixed pins (pins 4 and 5) of the fiber optic receiving module TORX198 to the printed circuit
board in order to fix it to the board.
(6) Shielding and wiring pattern of fiber optic receiving modules
To shield, connect the fixed pins (pins 5 and 6) of fiber optic transceiving module TORX198 to the
GND.
Where the fiber optic receiving module uses conductive resin, be careful that the case does not touch
wiring (including land).
To improve noise resistance, shield the optical module and the power line filter using a metallic cover.
(7) Solvent
When using solvent for flux removal, do not use a high acid or high alkali solvent. Be careful not to
pour solvent in to the optical connector ports. If solvent is inadvertently poured in to them, clean it off
using cotton tips.
(8) Protective cap
When the TORX198 is not in use, attach the protective cap.
(9) Supply voltage
Use the supply voltage within the recommended operating condition (VCC = 5 ± 0.25 V). Make sure
that supply voltage does not exceed the maximum rating value of 7 V, even for an instant.
(10) Output
If the receiver output is at low and is connected to the power supply, or if the output is high and is
connected to GND, the internal IC may be destroyed.
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(11) Soldering condition
Solder at 260°C or less for no more than three seconds.
(12) Precautions when disposing of devices and packing materials.
When disposing devices and packing materials, follow the procedures stipulated by local regulations
in order to protect the environment against contamination.
When devices are disposed of, worker safety and protection of the environment must be taken into
account.
(13) Precautions during use
Toshiba is continually working to improve the quality and the reliability of their products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical
sensitivity and their vulnerability to physical stress. It is the responsibility of the buyer, when
utilizing Toshiba products, to observe standards of safety, and to avoid situations in which the
malfunction or failure of a Toshiba product could cause loss of human life, bodily injury or damage to
property.
When developing equipment, please ensure that Toshiba products are used within the specified
operating ranges set forth in the most recent product specifications. Also, please keep in mind the
precautions and conditions set forth in the Toshiba Semiconductor Reliability Handbook.
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RESTRICTIONS ON PRODUCT USE 20070701-EN
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
TOSHIBA or the third parties.
• Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
