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Part: IRMT6100
Category:
Description:
Company: Infineon Technologies Corporation
Datasheet: Download IRMT6100 datasheet File size : 52 kB
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SIDE VIEW
IRMS 6100 TOP VIEW IRMT6100
Preliminary
C .116 L .106 (2.95) (2.70)
1.15 Mb/s IrDT 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)
DESCRIPTION IRMS6100/IRMT6100 is an IrDA compliant 1.152 Mb/s infrared data transceiver. Its external Shut Down (SD) feature cuts current consumption to typically less than 0.01 µA. The Shut Down (SD) mode disables the transmit input and tri-states the receiver output with a 500 k pull up. The transmit input is AC coupled, limiting transmit pulse duration to 70 µs, preventing transmitter damage and continuous LED output which also provides protection for eye safety. Selectable LED transmit power (Pin 7) makes it easy for designers to use standard power mode (Pin 7=H) for 1 meter link or low power mode (Pin7=L) for 20 cm link. Absolute Maximum Ratings, TA=25°C (except where noted) Supply Voltage Range, all states, VCC ........ 0.5 to +7.0 V LED Anode Voltage, VCC=0 to 5.5 V, not transmitting, VLEDA ....... 0.5 to +9.0 V LED Anode Voltage, VCC=2.7 to 5.5 V, transmitting, VLEDA ............ 0.5 to VCC +4.0 V Input Current, ICC during transmit, VCC=5.0 V, TxD=VCC (peak)...... 20 mA Output RxD Current ..... 50 mA Storage Temperature, storage or reduced performance, TS ..... 40 to +100°C Ambient Temperature, operating, TA ....25 to 85°C Lead Solder Temperature, 230°C.....<10 s IC Junction Temperature, TJ .. 125°C Average IR LED Current, LED Anode=3.3 V, ILED ...... 100 mA Repetitive Pulsed IR LED Current, <10 µs, ton <20%, LED Anode=3.3 V, ILED(RP) ....... 600 mA Input Voltage: TxD, SD....... 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
IRMS6100
IRMT6100
FEATURES · · · · Fully Compliant with IrDA Specification IrDA Data Rates 9.6 Kb/s to 1.152 Mb/s High Immunity to Fluorescent Light Noise Battery & Power Management Features: Receive 470 µA Typical Shutdown 10 nA Typical Programmable 500 mA/50 mA LED Transmitter for Standard 1.0 m or Low Power (30 cm) Operation Independent LED Anode Supply up to 9.0 V DC Wide Voltage Range 2.7 V to 5.5 V Full Specification High VCC Noise Rejection >100 mVPP Shutdown Tri-States Receiver Output and Disables TxD allowing Bus Interfacing Integrated Protection for Eye Safety-- AC Coupled Transmit Input High DC Ambient Rejection--Operates Outdoors Receiver Latency Less <100 µs Slimline Package: H 4.0 mm x D 4.8 mm x L 9.8 mm
· · · · ·
VCC
LED Power Select GND
2001 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) 440 March 22, 2001-15
Figure 1. Block Diagram
VCC Photodiode Main AMP Lowpass Filter Preamp Recei ve Detector + Recei ver Output
+
VCC Pin 6
Tri-State CMOS Buffer
VCC 500 k RxD
Pin 4
Ambient DC Cancelling AGC & Signal Reference Processor Tx Blanking
Detector Reference Receive Ouput Blanking
Tri-State Control Re gulated Voltage & Current Sources Power Down VCC SD Pin 5
AGC
Power Select Pin 7 LED Anode Pin 1
Tx Input Buffer TxD Pin 3 GND Pin 8 Tx In
Switched current source VCC Transmit IR LED Error AMP
LED Cathode Pin 2 Current Limited Driver
500 k
Theory of Operation The IRMS6100/IRMT6100 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). at The ambient light suppressor can cancel up to 10 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 k pulldown. 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. mW/cm2 Table 2. Slimline Truth Table
Inputs SD High Low TxD X=don't care state High Low 4 µW/cm2 (115 Kb/s) >10 µW/cm2 (1 Mb/s)
2
Outputs detector X=don't care state 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) 441
IRMS6100/IRMT6100 March 22, 2001-15
ELECTRICAL CHARACTERISTICS Table 3. Basic Operating Parameters, TA=25°C (except where noted)
Parameter Supported IrDA Data Rate VCC Voltage Maximum LED Anode Voltage ICC Shut Down Current (Note 1) ICC Standby Current ICC Receiving Current ICC Transmitting Current, Saturated Driver (Average) Symbol Min. -- VCC VLEDA ICC1 ICC2 ICC3 ICC4 9.6 2.7 -- -- 375 -- -- Typ. -- -- -- 0.01 470 650 3.0 Max. 1152 5.5 VCC+4 1.0 585 -- 4.5 Unit Kb/s V V µA µA µA mA Conditions 3/16 clock period or 1/4 clock >115 Kb/s 0 to 70°C VCC to VSS VCC=1.5 V to 5.5 V SD=VCC VCC=2.7 V to 5.5 V SD=0 VCC=2.7 V to 5.0 V no signal 4.0 µW/cm2 576 Kb/s 15 pF load VCC=5.0, LED I=400 mA
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 Output Low RxD Short Circuit RxD Short Circuit RxD to VCC Tri-State Impedance RxD Rise/Fall Time RxD Rise/Fall Time RxD Rise/Fall Time RxD Rise/Fall Time Symbol Min. -- -- -- -- -- VIH VIH VIL VIL -- -- -- -- -- -- -- -- 350 0.8 -- -- 4.3 1.5 -- -- -- -- 350 12 20 24 42 Typ. 5.0 500 1.4 35 90 4.6 1.7 0.22 0.17 40 8.0 500 18 30 36 63 Max. -- 650 2.0 100 200 -- -- 0.4 0.3 -- -- 650 27 40 55 94 Unit pF k V ns ns V V V V mA mA k ns ns ns ns Conditions VCC=2.7 V to 5.5 V TxD=VCC VCC=2.7 V to 5.5 V VCC=2.7 V to 5.0 V VCC=2.7 V to 5.0 V VCC=2.7 V to 5.0 V VCC=5.0 V Ioh=8.0 mA VCC=2.7 V Ioh=2.0 mA VCC=5.0 V Iol=8.0 mA VCC=2.7 V Iol=2.0 mA VCC=5.0 V RxD=0 RxD=VCC VCC=2.7 V RxD=0 RxD=VCC SD=VCC VCC=2.0 V to 5.0 V between RxD to VCC VCC=5.0 V Load=15 pF VCC=5.0 V Load=50 pF VCC=2.7 V Load=15 pF VCC=2.7 V Load=50 pF
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 -- -- 15 -- 500 -- -- -- -- -- Typ. 1.15 -- 5.0 1000 -- 30 10 300 2.0 Max. -- -- 10 -- 0.3 -- -- 1000 5.0 Unit Mb/s degrees µW/cm
2
Conditions 200 ns 4.0 µW/cm2 to 500 mW/cm2 IrDA Physical Layer specification Bit error Rate=10 8 217 ns pulse
mW/cm2 Bit error Rate=10 8 217 ns pulse W/cm2 < 0.1 pulse per second detect, 20 kHz to 200 kHz square wave <100 ns rise/fall
Maximum DC Ambient Irradiance 5.0 V -- Maximum DC Ambient Irradiance 2.7 V -- AGC Attack Time (Note 2) AGC Settling (Note 3) -- --
mW/cm2 VCC=5.0 V mW/cm2 VCC=2.7 V µs pulse 4.0 µW/cm2 to 500 mW/cm2 4.0 µW/cm2 to 500 mW/cm2 217ns pulse
2001 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) 442
IRMS6100/IRMT6100 March 22, 2001-15
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