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GP2W0110YPS Schematic ( PDF Datasheet ) - Sharp Electrionic

Teilenummer GP2W0110YPS
Beschreibung (GP2W0110YPS / GP2W0114YPS) Low Power Infrared Transceiver
Hersteller Sharp Electrionic
Logo Sharp Electrionic Logo 




Gesamt 14 Seiten
GP2W0110YPS Datasheet, Funktion
GP2W0110YPS/GP2W0114YPS
IrDA Technical Information
Low Power Infrared Transceiver
DESCRIPTION
The SHARP GP2W0110YPS/GP2W0114YPS are
low-power, short-range infrared transceiver modules.
They meet the Mobile Communication Low Power
Option within the IrDA Specification for the 20 cm com-
munication range. When operating at lower supply volt-
ages, these units provide a reliable interface between
logic and IR signals. Applications include through-air,
serial, half-duplex IR wireless data links at rates up to
115 kbit/s and the devices are designed to satisfy the
IrDA Physical Layer Specifications.
The SHARP GP2W0110YPS/GP2W0114YPS
FEATURES
• IrDA Low Power Option Compatibility for Telecom-
munication and Mobile Terminals
infrared transceiver modules contain a high speed,
high efficiency, low power consumption AlGaAs LED,
silicon PIN photodiode, and the low power driven bipo-
lar integrated circuit. The IC contains a LED driver cir-
• Industry Low Volume Package Design for a Low cuit and a receiver that provides the Rx output
Power Transceiver:
– 7.6(W) × 2.65(D) × 2.0(H) mm, 40.28 mm3
Low Power Consumption with Built-in Shut-Down
Mode 0.2 µA (TYP.)
supporting 2.4 kbit/s to 115.2 kbit/s IrDA signals. They
meet the IrDA Low Power Option Communication
Standard link distance of 0.2 m with low power devices
and 0.3 m with standard devices.
The GP2W0110YPS/GP2W0114YPS include a con-
• Low and Wide Range Operating Voltage:
stant-current source in the LED driver circuit that elimi-
– VDD = 2.0 V to 3.6 V, VLEDA = 2.0 V to 6.0 V
nates the need for an external current limiting resistor in
• Soldering Reflow Capable
thewww.DataSheet4U.com LED circuit.
• SMD Lead-less Package Design Provides Flexibility
with either Vertical Mount or Horizontal Mount to PCBs
The IrDA Low Power Option Standard is most suit-
able for telecommunication products and mobile termi-
nals, such as cellular phones, paging devices, and
• Replaces GP2W0102YP, GP2W0104YP, and
PDA-cellular combined multimedia devices. The trans-
GP2W0106YP
• Added Features include Tri-state Output and Split-
voltage Supply Capability
• Fully Compatible with Agilent HSDL 3201
ceiver modules provide wireless data link capability for
cellular phones and pagers, PDAs, or any other IrDA
application already on the market.
The transceiver modules’ receiver electronics oper-
ate at voltages from 2.0 V through 3.6 V without any
• TOP View Version: GP2W0114YPS
performance degradation. The split-voltage supply
allows the LED voltage to come from a separate supply.
APPLICATIONS
• Telecommunication Products
An example is in cell phones where the LED may oper-
ate from the battery and the receiver and logic section
is supplied from a regulated supply at a lower voltage.
– Cellular Phones
This provides manufacturers with the advantage of an
– Pagers
energy saving design in any application field, with alter-
– Smart Phones
• Mobile Products
– PDAs
natives for supply voltage and flexibility for other compo-
nents. The GP2W0110YPS/GP2W0114YPS
transceiver modules have a built-in 0.1 µA Shutdown
mode for those applications that are very conscious
– Electronic Wallets
about current consumption. Additionally, the
– Mini-Notebook PCs
• Imaging Products
– Portable Printers
– Portable Text Scanners
GP2W0110YPS/GP2W0114YPS have a tri-state out-
put, which allow their use in applications where one port
connection may be connected to more than one device.
The included shield is appropriate in applications
where Electro-Magnetic Interference (EMI) is a con-
cern. Infrared energy is immune to EMI, but the receiv-
ing PIN photodiode is somewhat sensitive to EMI. This
is the case in all IR communication devices.
IrDA Technical Information
1






GP2W0110YPS Datasheet, Funktion
GP2W0110YPS/GP2W0114YPS
Low Power Infrared Transceiver
ELECTRICAL DESIGN APPLICATION TIPS
The only external component needed for the
GP2W0110YPS/GP2W0114YPS is a capacitor for fil-
tering any power supply noise.
Application Circuit and External
Passive Components
The value of the external component CX in these
examples is a nominal 10 µF/6.3 V. However, it should
be adjusted as necessary for power supply noise and
frequency.
VLEDA may be connected to VDD or driven sepa-
rately from a different voltage source that is within the
allowed range. The recommended operating voltage
range for VDD is 2.0 V to 3.6 V, and the operating range
for VLEDA is 2.0 V to 6.0 V.
An example of Split Voltage Source design is shown
in Figure 7. VDD provides power only to the receiver
electronics. This regulated source can be at a lower
potential than VLEDA (the voltage source for the LED).
The VLEDA voltage may be directly driven from the
battery as shown in Figure 7. The VDD associated with
the Receiver interface electronics may be supported by
a power regulator or other device providing an efficient
regulated lower voltage source. This voltage may be as
low as 2.0 V to 3.6 V, and the VLEDA potential may
range from 2.0 Volts to 6.0 Volts.
An alternative is to connect the VLEDA and VDD pins
together as shown in Figure 8. This arrangement
allows the GP2W0110YPS/GP2W0114YPS to be used
in existing applications where both of these voltage
sources are connected. It is footprint and interface
compatible with previous SHARP GP2W0102YP/
GP2W0104YP/GP2W0106YP products.
1234 5678
NC NC VDD GND SD RxD TxD LEDA
+
CX
VDD GND SD RxD TxD LEDA
COMPONENT RECOMMENDED VALUES
CX 10 µF/6.3 V (NOTE)
NOTE: Suitable CX value should be adjusted in accordance
with the noise level and the power supply frequency.
GP2W0110YPS-5
Figure 6. GP2W0110YPS/GP2W0114YPS
Pin Connections
VLEDA
VDD
RxD
TxD
SD
RECEIVER
INTERFACE
ELECTRONICS
GP2W0110YPS-6
Figure 7. Split Voltage Source Example
VLEDA
RxD
TxD
SD
VDD
RECEIVER
INTERFACE
ELECTRONICS
GP2W0110YPS-7
Figure 8. Combining Voltage Sources
6 IrDA Technical Information

6 Page









GP2W0110YPS pdf, datenblatt
GP2W0110YPS/GP2W0114YPS
Low Power Infrared Transceiver
Product Packaging
Many products that use infrared communication
locate their reception component behind dark plastic.
This often fits in with the overall design and coloring
of the product, and has an intentional design purpose
as well.
The photodiode that is used in optical receivers is
sensitive to a variety of light wavelengths, not only the
wavelength intended for reception. Visible light has
many component factors and sources in a room. The
dark plastic used in product faceplates can be formu-
lated to act as a highpass filter, reducing the amount of
visible light and other wavelengths landing on the pho-
todiode and raising the internal noise currents.
The reduction of unwanted wavelengths provides for
a quieter and more sensitive receiver. The wavelength
used for IrDA Data communications is 880 nm. The char-
acteristic of any plastic used in a final product should
keep this in mind and not attenuate this wavelength.
Constructing an Optical Highpass Filter
A simple material for test purposes is to obtain a roll
of 100 ASA color film. Pull the film all of the way out of
the can and expose it to outdoor light for about 5 sec-
onds. Have the film developed, but first inform the per-
son operating the developer what you are doing so that
your intent is understood, and the material is processed
correctly. Otherwise you may be informed that the roll
has been overexposed and the material was therefore
discarded as unusable. The resulting developed nega-
tive stock should be dark and difficult to see through.
Using one or more layers will provide a variable attenu-
ation filter that you can tailor for experimental purposes.
Other light sources may produce different results.
The graph in Figure 16 was produced by exposing the
film to a ‘cool white’ fluorescent lamp for five seconds.
The filter transmission data is excerpted from an article
in Electronic Design, December 2, 1996, written by
David A. Johnson. The response of the material is fairly
steep near 830 nm, and has reasonable pass charac-
teristics above 880 nm.
Figure 16 shows the basic characteristic of the high-
pass filter. The exact position of the slope and increas-
ing response will depend on the material selected and
the light used to expose it. The intent is to supress vis-
ible light, and neighboring wavelengths, and pass the
desired 880 nm.
Other glass and plastic filters are available, and
many vendors carry plastic materials that may be cut,
bent or molded. The key to selecting a plastics vendor
is to ask them about the wavelength characteristics of
their materials. The more they know, the more likely
they will be to help you in a knowledgeable manner
when working on both the industrial design and wave-
length pass characteristics of your IR window.
100
90
80
70
60
50
40
30
20
10
0
300 400 500 600 700 800 900 1,000 1,100
WAVELENGTH IN NM
Figure 16. Optical Highpass Filter
GP2W0110YPS-13
12 IrDA Technical Information

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