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Part: IRMS5000
Category:
Description:
Company: Infineon Technologies Corporation
Datasheet: Download IRMS5000 datasheet File size : 52 kB
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IRMS5000
Microline, 115 Kb/s Data Transceiver
Dimensions in inches (mm)
0.353 (8.96) ±.003 (.08)
0.131 (3.33) ±.008 (.20)
0.193 (4.89)
0.078 (1.98) ±.008 (.20)
E
FEATURES · Compliant with IrDA hysical Layer pecification 1.3 · SIR Data Rates 9.6 Kb/s to 115 Kb/s · High EMI Immunity, Eliminates the Need for Shielding · Battery & Power Management Features: Receive standby - 110 A Typical Shutdown - 10 nA Typical Independent LED Anode Supply--2.7 V up to 9.0 V DC Wide CC oltage Range 2.4 V to 5.5 V, operable at 1.8 V at room temperature CC Noise Rejection >100 mVpp · Shutdown Tri-States Receiver Output and Disables TxD Allowing Bus Interfacing · Provides Integrated Protection for Eye Safety · High Immunity to Fluorescent Light Noise · High DC Ambient Rejection · Receiver Latency Less than 100 s · Microline Packaging (H) 2.74 mm x (D) 3.33 mm x (L) 8.86 mm Applications: · Ideal for Battery Operated Hand-held Products · PDAs, PCS Phones, Calculators, Isolated Medical Instruments, Infrared ID or Key Systems DESCRIPTION The Infineon IRMS5000 is an IrDA compliant infrared data transceiver featuring state of the art BiCMOS circuitry. The Shut Down (SD) feature cuts current consumption to typically less than 0.01 A. The Shut Down (SD) mode disables the transmit input and tri-states the receiver output. The transmit input is AC coupled, limiting transmit pulse duration to 70 s, preventing transmitter damage. This also provides integrated protection for eye safety.
2000 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) OSRAM Opto Semiconductors GmbH & Co. OHG · Regensburg, Germany www.osram-os.com · +49-941-202-7178
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0.108 (2.74) ±.003 (.08) 0.040 (1.02)
Absolute Maximum Ratings, A=25°C (except where noted) Supply Voltage Range, all states, CC ........ 0.5 to +7.0 V LED Anode Voltage, CC=0 to 5.5 V, not transmitting, LEDA ....... 0.5 to +9.0 V LED Anode Voltage, CC=1.5 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 ........25 to +85°C Ambient Temperature, operating, TA ..25 to +85°C Lead Solder Temperature, 240°C..... <10 s Average IR LED Current, LED .......100 mA Repetitive Pulsed IR LED Current, <10 s, ton <20%, LED Anode=3.3 V, ILED(RP) .......500 mA Input Voltage: TxD, Shut Down (SD)....0.5 to VCC +0.5 V RxD Voltage, ...... 0.5 to VCC +0.5 V Table 1. Pin Functions Pin no. Function 1 2 3 IR LEDA TxD RxD
Pin no. 4 5 6
Function SD VCC GND
1
March 26, 2000-00
Figure 1. Block Diagram
Differential Photodiode Pre amp Main amp Lowpass Filter Receive Detector + +
Tri-State CMOS Buffer
VCC 500 k
VCC
VCC Pin 5 RxD Pin 3
Receiver Output Tri-State Control Regulated Voltage & Current Sources Power Down SD
Ambient DC Cancelling
-
Detector Reference Receive Ouput Blanking
Pin 4
AGC
AGC & Signal Reference Processor Tx Blanking
Tx Input Buffer TxD Pi n 2 500 k GND Pi n 6 Tx In
Switched current source VCC Transmit IR LED Error amp
LED Anode Pin 1
Current Limited Driver
Theory of operation The IRMS5000 Microline 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 at 5.0 V. 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) feature is not used. In receive mode, the receiver output (RxD) which normally stays high, will go low for duration of the received 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 transit mode, by asserting the TxD pin above 1/2 VCC will turn on IR LED transmitter. LED Anode (pin 1) can be connected to VCC or an unregulated power supply (not to exceed VCC + 4.0 V). It is recommended that a resistor be connected in serial to set the proper LED current to reduce the thermal dissipation and to lower LED current when VLED is greater than 3.3 V.
Table 2. Microline IRMS5000 Truth Table Inputs
SD VCC TxD Detector X=don't care state High 2.4 to 5.5 V X=don't care state Low 2.4 to 5.5 V High 2.4 to 5.5 V Low 2.4 to 5.5 V <4.0 µW/cm
2
Outputs
RxD 500 k pull-up Undefined LED Off On Off
<0.4 µW/cm2 High Low
2000 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) OSRAM Opto Semiconductors GmbH & Co. OHG · Regensburg, Germany www.osram-os.com · +49-941-202-7178
IRMS5000
2
March 26, 2000-00
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Electrical Characteristics Table 3. Basic Operating Parameters, TA=25°C (except where noted) Parameter Sym. Min. Typ. Max.
Supported IrDA Data Rate VCC Voltage Maximum LED Anode Voltage ICC Shut Down Current (Note 1) ICC Standby Current (Average) ICC Receiving Current (Average) ICC Transmitting Current (Average) -- VCC VLEDA 9.6 2.4 -- -- 65 -- -- -- -- -- 0.01 110 120 1.7 115.2 5.5
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=2.7 V to 5.5 V SD=0, VCC=2.7 V no signal VCC=2.7, E=40W/m2 VCC=2.7 V to 3.3 V, No LED resistor VLED=3.0 V DC
VCC+4
1.0 130 200 2.5
ICC1 ICC2 ICC3 ICC5
Table 4. I/O Parameters Parameter
TxD, SD input capacitance TxD Input Impedence 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 Imp RxD Rise/Fall Time RxD Rise/Fall Time RxD Rise/Fall Time RxD Rise/Fall Time
Sym.
-- -- -- -- -- VIH VIH VIL VIL -- -- -- tr, tf tr, tf tr, tf tr, tf
Min.
-- 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=2.4 V to 5.5 V TxD=VCC, VCC=2.4 V to 5.5 V VCC=2.4 V to 5.5 V VCC=2.4 V to 5.5 V VCC=2.4 V to 5.5 V VCC=5.0 V, IOH=8.0 mA VCC=2.4 V, IOH=2.0 mA VCC=5.0 V, IOL =8.0 mA VCC=2.4 V, IOL=2.0 mA VCC=5.0 V, RxD=0, RxD=VCC VCC=2.4 V, RxD=0, RxD=VCC SD=VCC, VCC=2.4 V to 5.5 V 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
Table 5. Receiver Parameters, A=25°C (except where noted) Parameter Sym. Min. Typ.
Supported IrDA Data Rate Receive 1/2 Angle Minimum Signal Detect Irradiance Maximum Signal Detect Irradiance Maximum Signal Irradiance No detect Maximum DC Ambient Irradiance 5.0 V Maximum DC Ambient Irradiance 2.4 V AGC Attack Time (Note 2) AGC Settling (Note 3) Near-far Receiver Latency (Note 4) AGC Decay Rate (Note 5) Transmit Receiver Latency (Note 4) RxD Suppression Duration (Note 7) -- -- EIHmin EEmax -- -- -- -- -- -- -- tL -- 9.6 15 -- 500 -- -- -- -- -- -- -- -- -- -- 20 0.7 1000 -- 10 2.5 1.0 2.0 2.5 44 50 50
Max.
115.2 30 2.0 -- 0.3 -- -- 2.0 5.0 4.0 -- 100 100
Unit
Kb/s degrees µW/cm
2
Conditions
1.63 µs with Ee=4.0 W/cm2 to 500 mW/cm2 IrDA hysical Layer specification Bit error Rate=10 8, 1.63 s pulse
mW/cm2 Bit error Rate=10 8, 1.63 s pulse µW/cm2 < 0.1 pulse per second detect, 20 kHz-- 200 kHz square wave <100 ns rise/fall
mW/cm2 VCC=5.0 V mW/cm2 VCC=2.4 V µs pulse ms dB/ms µs µs Ee=4.0 µW/cm2 to 500 mW/cm2 Ee=4.0 µW/cm2 to 500 mW/cm2 at 115 Kb/s 0 to 5.0 mW/cm ambient input Following AGC settling at 500 mW/cm2 0 to 3.0 mW/cm2 DC ambient input Following end of TxD pulse
2000 Infineon Technologies Corp. · Optoelectronics Division · San Jose, CA www.infineon.com/opto · 1-888-Infineon (1-888-463-4636) OSRAM Opto Semiconductors GmbH & Co. OHG · Regensburg, Germany www.osram-os.com · +49-941-202-7178
IRMS5000
3
March 26, 2000-00
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