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Part: IRMT6118
Category:
Description:
Company: Infineon Technologies Corporation
Datasheet: Download IRMT6118 datasheet File size : 52 kB
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IRMS 6118 TOP VIEW IRMT6118
Preliminary
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)
IRMS6118
IRMT6118
IRMS6118
IRMT6118
FEATURES · · · · · · · · · · · Compliant with IrDA Specification Data Rates 9.6 Kb/s to 115 Kb/s High Immunity to Fluorescent light-noise Very High EMI Immunity, Eliminates the Need for Metal Shielding High DC Ambient Rejection Wide Range of Supply Voltage 2.4 to 5.0 V Standby Current 100 µA Typical Excellent Power Supply Noise Rejection Tri-State Receiver Output and TxD Disable AC Coupled Transmit Input: Provides Integrated Protection for Eye Safety 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
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 ..... 20 mA Storage Temperature, TS ......... 40 to +100°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 GND GND
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DESCRIPTION With state of the art submicron BiCMOS circuitry, coupled with Infineon optoelectronic expertise, the IRMS6118 and IRMT6118 outperforms its closest rival. The transmit input is AC coupled, limiting transmit pulse duration to 70 µs, preventing transmitter damage and continuous LED output.
2001 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) 448 March 21, 2001-19
Figure 1. Block Diagram
Differential Photodiode Pre amp Main amp Lowpass Filter Receive Detector + +
Tri-State CMOS Buffer
VCC 500 k
VCC
VCC Pin 6 RxD Pin 4
Receiver Output Tri-State Control Regulated Voltage & Current Sources Power Down SD
Ambient DC Cancelling
AGC & Signal Reference Processor Tx Blanking
Detector Reference Receive Ouput Blanking
Pin 5
AGC
Tx Input Buffer TxD Pin 3 500 k GND Pin 8 Tx In
Switched current source VCC Transmit IR LED Error amp
LED Anode Pin 1
LED Cathode Pin 2 Current Limited Driver
Theory of operation The IRMS6118/IRMT6118 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 10 mW/cm2 (typical) at 5.0 V of DC ambient signal. This will typically allow operation in all but direct sunlight. 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.
Table 2. Slimline IRMS6118/IRMT6118 Truth Table
Inputs VCC SD TxD Detector Outputs RxD 500 k pull-up LED Off
2.4 V to High X=don't care X=don't care 5.0 V state state 2.4 V to Low High 5.0 V Low <0.4 µW/cm2 <4.0 µW/cm2
Undefined On High Low Off
2001 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) 449
IRMS6118/IRMT6118 March 21, 2001-19
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 2.4 -- -- 65 -- -- Typ. -- -- -- 0.01 110 120 1.7 Max. 115 5.0 VCC+4 1.0 -- -- 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 5.0 V SD=VCC, VCC=2.4 V to 5.0 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 (Avg.) ICC Receiving Current (Avg.) ICC Transmitting Current (Avg.)
Table 4. I/O Parameters
Parameter TxD, SD Input Capacitance TxD Resistance 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 Rise Time Symbol Min. -- -- -- -- -- VIH VIH VIL VIL -- -- -- -- 350 0.8 -- -- -- -- -- -- -- -- -- -- -- Typ. 5.0 500 1.4 35 90 4.3 1.7 0.7 0.3 25 4 500 30 40 Max. -- 650 2.0 100 200 -- -- -- -- -- -- -- -- -- Unit pF k V ns ns V V V V mA mA k ns ns Conditions VCC=2.4 V to 5.0 V TxD=VCC, 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=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=2.4 V, Load=15 pF
tr tr
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 -- -- -- -- -- -- -- -- 1.0 Typ. -- 20 2.0 500 -- 10 2.5 50 50 50 1.63 Max. 115.2 30 4.0 -- 0.3 -- -- 100 100 100 3.0 Unit Kb/s degree µW/cm
2
Conditions 1.63 µs with e=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
mW/cm2 Bit error rate=10 8, 1.63 µs pulse µW/cm2 mW/cm2 VCC=5.0 V mW/cm2 VCC=2.4 V µs µs µs µs 0 to 3 mW/cm2 DC ambient input Following end of TxD pulse 0 to 3 mW/cm2 DC ambient input 1.63 µs, 4 µW/cm2 to 500 mW/cm2 input.
Maximum DC Ambient Irradiance, 5.0 V -- (Note 5) Maximum DC Ambient Irradiance, 2.4 V -- (Note 5) Transmit Receiver Latency (Note 2) RxD Suppression Duration (Note 6) Powerup Receiver Latency Output Pulse Width at RxD tL -- -- --
2001 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) 450
IRMS6118/IRMT6118 March 21, 2001-19
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