HSDL-3211-021 Avago Technologies US Inc., HSDL-3211-021 Datasheet - Page 13

• Manufacturer Part Number: HSDL-3211-021
• Description: Infrared Transceivers Short Distance 3V M IR
• Manufacturer: Avago Technologies US Inc.

Specifications of HSDL-3211-021

• Wavelength: 875 nm, 880 nm
• Continual Data Transmission: 1.152 Mbit/s
• Transmission Distance: 50 cm
• Radiant Intensity: 45 mW/sr
• Half Intensity Angle Degrees: 30 deg
• Pulse Width: 4 us, 1.6 us
• Maximum Rise Time: 25 ns, 40 ns
• Maximum Fall Time: 25 ns, 40 ns
• Led Supply Voltage: 0 V to 6.5 V
• Maximum Forward Current: 150 mA
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 8 mm x 3 mm x 2.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Appendix C: General Application Guide for the HSDL-3211
Description
The HSDL-3211, a low-cost and
small form factor infrared trans-
ceiver, 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
fully compliant to IrDA 1.4 low
power specification from 9.6 kb/s
to 1.152 Mb/s, and supports
HP-SIR and TV Remote modes.
Figures 15. Mobile phone platform.
DE-MODULATOR
TRANSCEIVER
MOD/
MICROPHONE
SPEAKER
AUDIO INTERFACE
USER INTERFACE
RF INTERFACE
The design of the HSDL-3211 also
includes the following unique
features:
• Low passive component count.
• Shutdown mode for low power
• Interface to input/output logic
Selection of Resistor R1
Resistor R1 should be selected to
provide the appropriate peak
pulse LED current over different
ranges of Vcc as shown in the
table below.
Recommended R1
5.6Ω
consumption requirement.
circuits as low as 1.8V
MICROCONTROLLER
DSP CORE
Vled
3.0 V
CONTROLLER
IR
Intensity
45 mW/sr
ASIC
HSDL-3211
Interface to Recommended I/O chips
The HSDL-3211’s TXD data input
is buffered to allow for CMOS
drive levels. No peaking circuit or
capacitor is required. Data rate
from 9.6 kb/s up to 1.152 Mb/s is
available at the RXD pin.
The block diagram below shows
how the IR port fits into a mobile
phone and PDA platform.
Minimum Peak Pulse
LED Current
150 mA