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Part: IRMS6115
Category:
Description:
Company: Infineon Technologies Corporation
Datasheet: Download IRMS6115 datasheet File size : 52 kB
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IRMS6115 TOP VIEW IRMT6115
C .116 L .106 (2.95) (2.70)
115 Kb/s Infrared Data Transceiver
Dimensions in inches (mm)
E
D
.157 (4.00)
E
D
.190 (4.83)
PIN 1 E=Emitter D=Detector
PIN 1
.138 (3.50) .374 (9.86)
IRMS6115
IRMT6115
IRMS6115
IRMT6115
FEATURES · Compliant with IrDA Specification · Data Rates 9.6 Kb/s to 115 Kb/s, usable up to 576 Kb/s · Wide Range of Supply Voltage 2.4 to 5.5 V · Standby Current 90 µA Typical · Excellent Power Supply Noise Rejection · Tri-State Receiver Output and TxD Disable · AC Coupled Transmit Input: Provides Integrated Protection for Eye Safety · High DC Ambient Rejection · Independent LED Supply, Anode Pin Can Take up to 9.0 V DC when not Transmitting and up to 4.0 V above VCC when Transmitting · Receiver Latency Less than 100 µs · Slimline Package: H 4.0 mm x D 4.8 mm x L 9.8 mm DESCRIPTION With state of the art submicron BiCMOS circuitry, coupled with Infineon optoelectronic expertise, the IRMS6115 and IRMT6115 outperforms its closest rival. The transmit input is AC coupled, limiting transmit pulse duration to 70 µs, preventing transmitter damage and continuous LED output.
Absolute Maximum Ratings, TA=25°C (except where noted) Supply Voltage Range, all states, VCC ........0.5 to +7.0 V LED Anode Voltage, VLEDA VCC=0 to 5.5 V, not transmitting ..0.5 to +9.0 V LED Anode Voltage, VLEDA VCC=2.4 to 5.5 V, transmitting ..... 0.5 to VCC + 4.0 V Input Current ICC VCC=5.0 V, TxD=VCC, transmit ......... 20 mA Output RxD Current ..... 50 mA Storage Temperature, TS..... 25 to +85°C Operating Temperature, TO ....... 25 to +85°C Lead Solder Temperature, Maximum 230°C.. <10 s IC Junction Temperature, TJ ..125°C Average IR LED Current, ILED ......100 mA Repetitive Pulsed IR LED Current, <10 µs, ton <20%, LED Anode=3.3 V, ILED(RP) .......600 mA Input Voltage: TxD...... 0.5 to VCC + 0.5 V RxD Voltage ..... 0.5 to VCC + 0.5 V Table 1. Pin Functions
Pin no. 1 2 3 4 Function IR LEDA IR LEDC TxD RxD Pin no. 5 6 7 8 Function SD VCC *Do not connect GND
*Pin 7 internally grounded
Infineon Technologies, Corp. · Optoelectronics Division · Cupertino, CA (formerly Siemens Microelectronics, Inc.) www.infineon.com/opto · 1-800-777-4363 1
May 7 1999-08
Figure 1. Block Diagram
VCC Pin 6 RxD Pin 4 VCC 500 K Tri-State Buffer Comparator Lowpass Filter 25 kHz to 500 kHz BW DC Amplifier
REF ENB
Ambient Light Supressor SD Pin 5 Regulated Voltage & Current Source TxD Input Disable IR LED Gated Buffer GND Pin 8 2 µA Pull-down AGC & Signal Reference Processor AGC Pin Photodiode
LED Anode Pin 1 LED Cathode Pin 2
TxD Pin 3 Current Limited LED Driver
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/cm (typical) at 2.4 V of DC ambient signal, and up to 1.5 mW/cm2 (peakto-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 environment. 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 1/2 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.
2
Table 2. Slimline IRMS6115/IRMT6115 Truth Table
Inputs SD TxD Detector Outputs RxD LED Off On Off X=don't care 500 k pull-up state Undefined 0.4 mW/sr 40 mW/sr High Low
High X=don't care state Low High 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
Electrical Characteristics Table 3. Basic Operating Parameters, TA=25°C (except where noted)
Parameter Supported Data Rate Power Supply Voltage Maximum LED Anode Voltage Symbol Min. -- VCC VLEDA ICC1 ICC1 ICC2 ICC3 9.6 K 2.4 -- -- 65 -- -- Typ. -- -- -- 0.01 80 100 2.0 Max. 115 K 5.5 VCC+4 1.0 90 200 2.5 Unit Kb/s V V µA µA µA mA Conditions 1.63 µs or 3/16 clock period 25°C to +85°C, VCC to VSS VCC=2.4 V to 5.5 V SD=VCC, VCC=2.4 V to 5.5 V no signal, VCC=2.7 V to 3.3 V VCC=2.7 V to 3.3 V VCC=2.7 V to 3.3 V, No LED resistor, VLED=3.0 V DC
ICC Shut Down Current (Note 1) ICC Standby Current (Ave) ICC Receiving Current (Ave) ICC Transmitting Current (Ave) Table 4. I/O Parameters
Parameter TxD, SD input capacitance TxD High Loading TxD Low Loading TxD, SD Input Threshold (Note 1) SD to RxD Tri-State SD to RxD Enable RxD Output High RxD Output High RxD Output Low RxD Ouput Low RxD Short Circuit RxD Short Circuit RxD to VCC Tri-State Impedance RxD Rise Time RxD Fall Time RxD Rise Time RxD Fall Time
Symbol Min. -- -- -- -- -- -- VIH VIH VIL VIL -- -- -- -- 1.0 -- 0.8 -- -- 4.3 1.9 -- -- -- -- 350 12 20 17 30
Typ. 5.0 2.0 -- 1.4 35 90 4.6 2.1 0.22 0.17 48 10 500 18 30 25 45
Max. -- 3.0 0.01 2.0 100 200 -- -- 0.4 0.3 -- -- 650 27 40 40 70
Unit pF µA µA V ns ns V V V V mA mA k ns ns ns ns
Conditions VCC=2.4 V to 5.5 V TxD=VCC, VCC=2.4 V to 5.5 V TxD=0, VCC=2.4 V to 5.5 V VCC=2.4 V to 5.0 V VCC=2.4 V to 5.0 V VCC=2.4 V to 5.0 V VCC=5.0 V, IOH=8 mA VCC=2.4 V, IOH=3 mA VCC=5.0 V, IOL =8 mA VCC=2.4 V, IOL=3.0 mA VCC=5.0 V, RxD=0, RxD=VCC VCC=2.4 V, RxD=0, RxD=VCC VCC=2.4 V to 5.0 V, between RxD to VCC VCC=5.0 V, Load=15 pF VCC=5.0 V, Load=50 pF VCC=2.4 V, Load=15 pF VCC=2.4 V, Load=50 pF
tr tf tr tf
Table 5. Receiver Parameters, TA=25°C (except where noted)
Parameter Maximum Data Rate Receive 1/2 Angle Minimum Signal Detect Irradiance Maximum Signal Detect Irradiance Maximum Signal Irradiance No detect Symbol Min. -- -- EIHmin EEmax -- 9.6 15 -- 500 -- -- -- -- -- -- -- Typ. 115.2 -- 2.0 1000 -- 7.5 4.0 1.0 5.0 2.5 44 Max. 576 -- 4.0 -- 0.3 -- -- 2.0 10 4.0 -- Unit Kb/s degree µW/cm
2
Conditions 4.0 µW/cm2 to 500 mW/cm2 IrDA Physical Layer specification Bit error rate=10 8, 1.63 µs pulse <0.1 pulse per second detect, 1.63 µs VCC=5.0 V
mW/cm2 Bit error rate=10 8, 1.63 µs pulse µW/cm2 mW/cm2
Maximum DC Ambient Irradiance, 5.0 V -- (Note 7) Maximum DC Ambient Irradiance, 2.4 V -- (Note 7) AGC Attack Time (Note 2) AGC Settling (Note 3) Near-Far Receiver Latency (Note 4) AGC Decay Rate (Note 5) -- -- -- --
mW/cm2 VCC=2.4 V µs pulse ms dB/ms 4 µW/cm2 to 500 mW/cm2 4 µW/cm2 to 500 mW/cm2 at 115 Kb/s 0 to 5 mW/cm2 ambient input Following AGC settling at 500 mW/cm2
IRMS6115/IRMT6115 May 7 1999-08
Infineon Technologies, Corp. · Optoelectronics Division · Cupertino, CA (formerly Siemens Microelectronics, Inc.) www.infineon.com/opto · 1-800-777-4363 3
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