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IRMT6100 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - (IRMS6100 / IRMT6100) IrDT Data Transceiver - Infineon Technologies

भाग संख्या IRMT6100
समारोह (IRMS6100 / IRMT6100) IrDT Data Transceiver
मैन्युफैक्चरर्स Infineon Technologies 
लोगो Infineon Technologies लोगो 
पूर्व दर्शन
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<?=IRMT6100?> डेटा पत्रक पीडीएफ

IRMT6100 pdf
Figure 1. Block Diagram
Photodiode
Preamp
Ambient DC
Cancelling
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AGC
TxD Tx In
Pin 3
GND
Pin 8
500 k
Main
AMP
Lowpass
Filter
+
AGC & Signal
Reference
Processor
Tx
Blanking
Receive Detector
+
Tri-State
CMOS Buffer
VCC
VCC
VCC Pin 6
500 k
RxD
Receiver Output
Pin 4
Detector
Reference
Receive Ouput
Blanking
Tri-State
Control
Regulated
Voltage &
Current
Sources
Power Down
VCC
SD
Pin 5
Power Select
Pin 7
Tx Input
Buffer
Switched
current source
VCC
Transmit
IR LED
LED Anode
Pin 1
LED Cathode
Pin 2
Error
AMP
Current Limited
Driver
Theory of Operation
The IRMS6100/IRMT6100 SlimlineInfrared Data Transceiver
consists of a detector photodiode, an IR LED transmitter, an IC
containing ambient light suppressor and Automatic Gain con-
trol circuitry (AGC).
The ambient light suppressor can cancel up to 10 mW/cm2 at
5.0 V. This will typically allow operation in all but direct sunlight.
The receiver automatic gain control (AGC) circuit normalizes
pulse width despite 120 dB signal range. The AGC also
improves noise immunity while receiving a transmission by
reducing gain so that noise less than 1/2 the peak signal height
will not be detected.
Asserting shutdown powers down the transceiver, and for bus
multiplexing, tri-states the receiver output and disables TxD input.
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 1.4 V will
turn on IR LED transmitter. This pin has a 500 kpulldown. 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 Truth Table
Inputs
SD TxD
detector
High X=dont X=dont care state
care state
Low High
Low
<0.4 µW/cm2 (115 Kb/s)
<1 µW/cm2 (1 Mb/s)
>4 µW/cm2 (115 Kb/s)
>10 µW/cm2 (1 Mb/s)
Outputs
RxD
500 k
pull-up
Undefined
High
Low
LED
Off
On
Off
The transmitter current limit is programmed to the high or low
value by the state of Power Selection pin. If Power Select is low,
low drive current limit is set. If the Power Select is high, high
drive current limit is set.
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
4–41
IRMS6100/IRMT6100
March 22, 2001-15

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भाग संख्याविवरणविनिर्माण
IRMT6100(IRMS6100 / IRMT6100) IrDT Data TransceiverInfineon Technologies
Infineon Technologies


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