MCP2150 Microchip Technology, Inc., MCP2150 Datasheet - Page 22

• Manufacturer Part Number: MCP2150
• Description: The MCP2150 Provides Irda Protocol Handling Plus Bit Encoding/decoding Functionality For Data Terminal Equipment (DTE) Applications in One Low Pincount Device
• Manufacturer: Microchip Technology, Inc.

MCP2150
2.14
The MCP2150 requires an infrared transceiver. The
transceiver can be an integrated solution.
shows a list of common manufacturers of integrated
optical transceivers. A typical optical transceiver cir-
cuit, using a Vishay/Temic TFDS4500, is shown in
Figure
FIGURE 2-12:
The optical transceiver logic can be implemented with
discrete components for cost savings. Care must be
taken in the design and layout of the photo detect cir-
cuit, due to the small signals that are being detected
and their sensitivity to noise. A discrete implementation
of the optical transceiver logic is implemented on the
MCP2120 and MCP2150 Developer’s Kit boards.
DS21655B-page 22
Note:
R13
47
C18
.1 µF
2-12.
+5 V
Optical Transceiver
The discrete optical transceiver implemen-
tation on the MCP2120 and MCP2150
Developer’s Kit boards may not meet the
IrDA specifications for the physical layer
(IrPHY). Any discrete solution will require
appropriate
application.
(To MCP2150
1
2
3
4
TFDS4500
Pin 3)
RXIR
U6
TYPICAL OPTICAL
TRANSCEIVER
CIRCUIT
validation for the
8
7
6
5
22
R11
+5 V
(To MCP2150
Pin 2)
TXIR
Table 2-6
user’s
Preliminary
2.15
The IrDA Standards download page can be found at:
Some common manufacturers of Optical Transceivers
are shown in
TABLE 2-6:
Infineon
Agilent
Vishay/Temic
Rohm
Company
http://www.irda.org/standards/specifications
References
Table
COMMON OPTICAL
TRANSCEIVER
MANUFACTURERS
www.infineon.com
www.agilent.com
www.vishay.com
www.rohm.com
2-6.
Company Web Site Address
2002 Microchip Technology Inc.