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Details, datasheet, quote on part number:IRM5000D
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Datasheet text preview:
IRM5000D
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 Physical Layer Specification 1.3 · SIR Data Rates 2.4 Kb/s to 115 Kb/s · High EMI Immunity, Eliminates the Need for Shielding · Battery & Power Management Features: Low standby current - 110 µA Typical Shutdown - 2 nA Typical Independent LED Anode Supply--2.7 V up to 9.0 V DC Wide VCC Voltage Range 2.4 V to 5.0 V, operable at 1.8 V at room temperature VCC Noise Rejection >100 mVpp · Shutdown Tri-States Receiver Output and Disables TxD Allowing Bus Interfacing · TxD Echo-Off; RxD is quiet during transmission · Provides Integrated Protection for Eye Safety · High Immunity to Fluorescent Light Noise · High DC Ambient Rejection · Receiver Latency Less than 100 µs · Microline Packaging (H) 2.74 mm x (D) 3.33 mm x (L) 8.96 mm Applications: · Ideal for Battery Operated Hand-held Products · PDAs, PCS Phones, Calculators, Isolated Medical Instruments, Infrared ID or Key Systems DESCRIPTION The Vishay IRM5000D is an IrDA compliant infrared data transceiver. Unlike the IRM5000C, the IRM5000D eliminates receiver RxD output signals while transmitting. The RxD pin is quiet during transmission. This feature is called Echo-Off. The 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. The transmit input is
Document Number: 82589 Revision 05-July-02
D
0.108 (2.74) ±.003 (.08) 0.040 (1.02)
AC coupled, limiting transmit pulse duration to 70 µs, preventing transmitter damage. This also provides integrated protection for eye safety. 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 5.0 V, not transmitting, VLEDA .. 0.5 to +9.0 V LED Anode Voltage, VCC=1.5 to 5.0 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 ...... 20 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, ILED ....... 100 mA Repetitive Pulsed IR LED Current, <10 µs, 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
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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 Pin 2 500 k GND Pin 6 Tx In
Switched current source VCC Transmit IR LED Error amp
LED Anode Pin 1
Current Limited Driver
Theory of operation The IRM5000D 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 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 series resistor be connected at Pin1 (LED Anode) to reduce the thermal dissipation and to lower LED current when VLED is greater than 3.3 V.
Table 2. Microline IRM5000D Truth Table Inputs
SD High Low
Outputs
RxD 500 k pull-up High LED Off On Off
VCC
2.4 to 5.0 V 2.4 to 5.0 V 2.4 to 5.0 V 2.4 to 5.0 V
TxD X=don't care state High Low
Detector X=don't care state
<0.4 µW/cm <4.0 µW/cm
2 2
High Low
Document Number: 82589 Revision 05-July-02
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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 -- 2.4 2.4 -- -- -- -- -- -- -- -- 0.01 110 120 1.7 115.2 5.0
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 Voltage
Maximum LED Anode Voltage
VCC VLEDA ICC1 ICC2 ICC3 ICC5
VCC+4
1.0 -- -- 2.5
VCC=2.4 V to 5.0 V
SD=VCC, VCC=2.7 V to 5.0 V SD=0, VCC=2.7 V no signal
ICC Shut Down Current (Note 1) ICC Standby Current (Average) ICC Receiving Current (Average) ICC Transmitting Current (Average)
VCC=2.7, E=40W/m2 VCC=2.7 V to 3.3 V, No LED resistor VLED=3.0 V DC
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
Sym.
-- -- -- -- -- VOH VOH VOL VOL -- -- -- tr, tf tr, tf
Min.
-- -- 0.8 -- -- -- -- -- -- -- -- -- -- --
Typ.
5.0 500 1.4 35 90 4.3 1.7 0.7 0.3 25 4.0 500 35 60
Max.
-- -- 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=4.0 mA VCC=2.4 V, IOH=1.0 mA VCC=5.0 V, IOL =4.0 mA VCC=2.4 V, IOL=1.0 mA VCC=5.0 V, RxD=0, RxD=VCC VCC=2.4 V, RxD=0, RxD=VCC SD=VCC, VCC=2.0 V to 5.0 V VCC=5.0 V, Load=15 pF VCC=2.0 V, Load=15 pF
Table 5. Receiver Parameters, TA=25°C Parameter Sym.
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 Transmit Receiver Latency (Note 2) Powerup Receiver Latency Output Pulse Width at RxD Small Ripple Power Supply Rejection (Note 3) Large Ripple Power Supply Rejection (Note 3) -- -- EIHmin EEmax -- -- -- tL -- -- -- --
Min.
2.4 15 -- -- -- -- -- -- -- 1.0 -- --
Typ.
-- 20 2.0 500 -- 10 2.5 50 100 1.6 100 200
Max.
115.2 30 4.0 -- 0.3 -- -- 100 150 3.0 -- --
Unit
Kb/s degrees µW/cm
2
Conditions
1.63 µs with Ee=4.0 µW/cm2 to 500 mW/cm2 IrDA Physical Layer specification Bit error Rate=108, 1.63 µs pulse
mW/cm2 Bit error Rate=10 8, 1.63 µs 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 µs µs mV/µs mV/ms 0 to 3.0 mW/cm2 DC ambient input 0 to 2.5 mW/cm2 DC ambient input 1.63µs, 4µW/cm2 to 500mW/cm2 input 100 mVpp triangle wave on VCC 1.0 Vpp triangle wave on VCC
Document Number: 82589 Revision 05-July-02
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