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IRMT6115 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - (IRMS6115 / IRMT6115) Infrared Data Transceiver - Infineon Technologies

भाग संख्या IRMT6115
समारोह (IRMS6115 / IRMT6115) Infrared Data Transceiver
मैन्युफैक्चरर्स Infineon Technologies 
लोगो Infineon Technologies लोगो 
पूर्व दर्शन
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<?=IRMT6115?> डेटा पत्रक पीडीएफ

IRMT6115 pdf
Figure 1. Block Diagram
VCC
Pin 6
RxD
Pin 4
VCC
500 KTri-State
Buffer
Comparator
ENB
SD
Pin 5
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Regulated Voltage
& Current Source
TxD Input
Disable
DC Amplifier
Lowpass
Filter
25 kHz to
REF 500 kHz
BW
AGC & Signal
Reference
Processor
AGC
Ambient
Light
Supressor
Pin
Photodiode
TxD
Pin 3
GND
Pin 8
2 µA
Pull-down
Gated
Buffer
IR LED
Current Limited
LED Driver
LED
Anode
Pin 1
LED
Cathode
Pin 2
Theory of operation
The IRMS6115/IRMT6115 Slimline—Infrared Data Transceiver
consists of a detector photodiode, an IR LED transmitter, an IC
containing ambient light suppressor, and Automatic Gain control
circuitry (AGC).
The ambient light suppressor can cancel up to 4.0 mW/cm2 (typ-
ical) at 2.4 V of DC ambient signal, and up to 1.5 mW/cm2 (peak-
to-peak) at 120 Hz AC ambient.
The AGC in the IC is to keep the system output constant by
varying the gain to accommodate a wide range of input signals.
It also provides noise immunity in the high noise ambient envi-
ronment.
For normal operation of the transmit and receiver modes, the
Shut Down (SD) pin should be held low. It is recommended
that this pin be connected to GND if Shut Down (SD) mode is
not used.
In receive mode, the receiver output (RxD) which normally
stays high, will go low for duration of the receive pulses. It is a
push-pull CMOS driver capable of driving a standard CMOS or
TTL load. No external pull-up or pull-down resistor is required.
In transmit mode, by asserting the TxD pin above 12 VCC will
turn on IR LED transmitter. At the LED Anode (pin 1) connect
this pin to VCC or unregulated power supply (not to exceed
VCC + 4.0 V), through a resistor to set the proper LED current to
reduce the thermal dissipation and to lower LED current.
Table 2. Slimline IRMS6115/IRMT6115 Truth Table
Inputs
Outputs
SD TxD
Detector
RxD
LED
High X=don’t care X=don’t care 500 kpull-up
state
state
Off
Low High
Undefined
On
Low
0.4 mW/sr High
Off
40 mW/sr Low
Infineon Technologies, Corp. • Optoelectronics Division • Cupertino, CA (formerly Siemens Microelectronics, Inc.)
www.infineon.com/opto • 1-800-777-4363
2
IRMS6115/IRMT6115
May 7 1999-08

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डाउनलोड[ IRMT6115 Datasheet.PDF ]


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