LT1328_15 Datasheet, PDF (1/12 Pages) Linear Technology – 4Mbps IrDA Infrared Receiver

FEATURES
s _{SIR, FIR and 4ppm Compatible}
s _{Low Frequency Ambient Rejection Loop}
s _{Supply Current: 2mA}
s _{8-Lead MSOP and SO Packages}
s _{5V Single Supply Operation}
s _{Optional High Frequency Noise Rejection}
U
APPLICATIONS
s _{IrDA Applications}
s _Sharp/Newton
s _{TV Remote}
s _{Noncontact Telemetry}
s _{Wireless Slave for Photographic Flash}
s _{Keyless Entry}
s _{Optical Data Transfer}
s _{Infrared Home Control Systems}
LT1328
4Mbps IrDA
Infrared Receiver
DESCRIPTION
The LT^®1328 is a photodiode receiver that supports IrDA^®
data rates up to 4Mbps as well as other modulation
methods such as Sharp ASK and TV remote control. The
LT1328 MSOP contains all the necessary circuitry to
convert current pulses from an external photodiode to a
digital TTL output while rejecting unwanted lower fre-
quency interference. The LT1328 plus five external com-
ponents is all that is required to make an IrDA compatible
receiver.
Power requirements for the LT1328 are minimal—a single
5V supply and 2mA of quiescent current. Internal high-
pass filtering attenuates interfering signals such as sunlight,
incandescent and fluorescent lamps and is selectable at
Pin 7 for low or high data rates. The LT1328’s ease of use
and flexibility make it an ideal solution for numerous other
photodiode receiver applications. The LT1328 is available
in the SO-8 as well as the tiny MSOP for size-critical
applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
IrDA is a registered trademark of the Infrared Data Association.
TYPICAL APPLICATIONS N
LIGHT IN
TEMIC
BPV22NF
IrDA Receiver
D1
C1
10nF
C4
330pF
HIGH: SIR
C6 LOW: FIR AND 4ppm
LT1328
1000pF
1
IN
8
V_BIAS
2
7
FILTER MODE
(OPTIONAL)
OPTIONAL
SHUTDOWN
CIRCUIT
3
FILTER
SWITCH
V_CC
6
4
5
GND DATA
C2
4.7µF
5V
TP0610L*
5V
TTL
DATA OUT
ENABLE
*SILICONIX
1328 TA01
IrDA Transmitter
V_CC
C5
4.7µF
TRANSMIT
INPUT
R1
100Ω
R2
10k
*HEWLETT PACKARD
D2
HSDL-4220*
R3
3.9Ω
1/2W
Q3
2N7002
1328 TA02
1