ASDL-3007-021 Avago Technologies US Inc., ASDL-3007-021 Datasheet - Page 16

• Manufacturer Part Number: ASDL-3007-021
• Description: Infrared Transceivers SIR+RC transceiver
• Manufacturer: Avago Technologies US Inc.

Specifications of ASDL-3007-021

• Wavelength: 885 nm, 875 nm
• Continual Data Transmission: 115.2 Kbit/s
• Transmission Distance: 50 cm
• Radiant Intensity: 19 mW/sr
• Half Intensity Angle Degrees: 30 deg to 60 deg
• Pulse Width: 4 us, 1.6 us
• Maximum Rise Time: 60 ns, 600 ns
• Maximum Fall Time: 60 ns, 600 ns
• Led Supply Voltage: 5.5 V
• Maximum Forward Current: 32 mA
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 7 mm x 2.8 mm x 1.6 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Appendix C: General Application Guide for the ASDL-3007 Infrared IrDA® Compliant 115.2kb/s Transceiver
Description
The ASDL-3007, a wide-voltage operating range infrared
transceiver, is a low-cost and ultra small form factor
device that is designed to address the mobile computing
market such as PDAs, as well as small embedded mobile
products such as digital cameras and cellular phones. It
is spectrally suited to universal remote control transmis-
sion function. It is fully compliant to IrDA 1.4 low power
specification from 9.6kb/s to 115.2kb/s, and support
most remote control codes. The design of ASDL-3007 also
includes the following unique features:
• Spectrally
• Low passive component count;
• Shutdown mode for low power consumption
Figure C1. Mobile Application Platform
Figure C2. PDA Platform
16
Controller
PCMCIA
transmission function;
requirement;
ROM
RAM
Microphone
Speaker
suited
to
Audio Interface
CPU for embedded
RS232C
RF Interface
User Interface
Driver
universal
application
Panel
LCD
remote
COM
Port
Microcontroller
control
Touch
DSP Core
Panel
Selection of Resistor R1
Resistor R1 should be selected to provide the appropri-
ate peak pulse LED current at different ranges of Vcc as
shown on page 4 under “Recommended Application
circuit components”.
Interface to the Recommended I/O chip
The ASDL-3007’s TXD data input is buffered to allow
for CMOS drive levels. No peaking circuit or capacitor
is required. Data rate from 9.6kb/s up to 115.2kb/s is
available at RXD pin. The TXD_RC, pin6, is used to select
the remote control transmit mode. Alternatively, the
TXD_IR, pin3, is used for infrared transmit selection.
Figures C1 and C2 show how ASDL-3007 fits into a mobile
phone and PDA platform respectively.
IR
RC