MAX3120 PART. MAX3120EUA 0 C to +70 C. 0 C to +70 C 8 SO MAX3120CSA. MAX3120ESA -40 C to +85 C 8 SO TOP VIEW MAX3120. Maxim Integrated Products 1

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1 ; Rev 0; 10/98 µ µ µ PART CUA CSA EUA TEMP. RANGE 0 C to +70 C 0 C to +70 C -40 C to +85 C ESA -40 C to +85 C 8 SO PIN-PACKAGE 8 µmax 8 SO 8 µmax +3.3V V CC V CC SHDN TOP VIEW CS LED SCLK TX TXD LEDC DIN DOUT MAX3 TXD V CC GND LEDC PGND RX PINC PINC 4 mmax/so 5 SHDN GND GND PGND PIN DIODE Maxim Integrated Products 1

2 ABSOLUTE MAXIMUM RATINGS (Referred to GND) V CC V to +6V TXD, SHDN, LEDC V to +6V V to (V CC + 0.3V) PGND V to +0.1V PINC...10mA Continuous LEDC Current...200mA Repetitive Pulsed LEDC Current (<90µs, duty cycle <20%)...500mA Continuous Power Dissipation (T A = +70 C) µmax (derate 4.1mW/ C above +70 C)...330mW SO (derate 5.88mW/ C above +70 C)...471mW Operating Temperature Ranges C_A...0 C to +70 C E_A C to +85 C Junction Temperature C Storage Temperature Range C to +160 C Lead Temperature (soldering, 10sec) C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V CC = +3.0V to +5.5V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C and V CC = +3.3V.) PARAMETER DC CHARACTERISTICS Supply Current Shutdown Supply Current LOGIC S (TXD, SHDN) Input Logic Threshold Low Input Logic Threshold High Input Leakage Current Input Capacitance LOGIC () Output Voltage Output Rise and Fall Time IR RECEIVER Supported Data Rates Equivalent Input Noise Current Input Current Sensitivity Ambient DC Current Rejection Shutdown Time Shutdown Disable Time IR Receiver Output Pulse Width SYMBOL I CC I CC(SHDN) V IL V IH I LEAK C IN V OL V OH t r, t f I NOISE T A = +25 C, SHDN = V CC (Note 1) T A = +25 C, SHDN = GND (Note 1) V CC = 5.0V I SINK = 200µA I SOURCE = µa C LOAD = 50pF (Note 2) (Note 3) V CC = 5.0V Delay until I CC < 1µA CONDITIONS Delay until maximum IR receiver data rate is valid MIN TYP MAX V CC - V CC Data rate = 2.4kbps 1 90 Data rate = 115.2kbps UNITS µa µa V V µa pf V ns kbps na RMS ma µa µs µs µs 2

3 ELECTRICAL CHARACTERISTICS (continued) (V CC = +3.0V to +5.5V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C and V CC = +3.3V.) PARAMETER IR TRANSMITTER SYMBOL CONDITIONS MIN TYP MAX UNITS Transmitter Rise Time t r 10% to 90% of 200mA drive current ns Transmitter Fall Time t f 90% to 10% of 200mA drive current ns Transmitter Output Resistance I OUT = 200mA V CC = 5.0V Ω Off-Leakage Current µa Note 1: All supply current measurements are made under the following conditions: no load at all outputs, input voltages at GND or V CC, no PIN diode input current. Note 2: Equivalent input current noise is calculated by dividing the output noise of the transimpedance amplifier by the midband transimpedance gain. Note 3: Sensitivity is measured with an IrDA-compliant input signal, where the data rate is within the Supported Data Rate, rise/fall times are less than 600ns, and pulse widths are between 1.41µs and 3/16 of the baud rate. (T A = +25 C, unless otherwise noted.) RLEDC (W) LED DRIVER ON-RESISTANCE vs. TEMPERATURE I LEDC = ma V CC = 5V TOC01 SUPPLY CURRENT (ma) SUPPLY CURRENT vs. TEMPERATURE V CC = 5V V CC = 3V TOC TEMPERATURE ( C) TEMPERATURE ( C) SUPPLY CURRENT vs. SUPPLY VOLTAGE TOC LEDC VOLTAGE vs. LEDC CURRENT PULSED AT 20% DUTY CYCLE toc04 SUPPLY CURRENT (ma) VLEDC (mv) V CC = 5V SUPPLY VOLTAGE (V) LEDC CURRENT (ma) 3

4 (T A = +25 C, unless otherwise noted.) CURRENT REJECTION (ma) AMBIENT PHOTODIODE CURRENT REJECTION vs. SUPPLY VOLTAGE SUPPLY VOLTAGE (V) TOC05 PULSE WIDTH (ms) toc08 PULSE WIDTH vs. DISTANCE TRANSMITTER POWER = 200mW/sr PULSE WIDTH = 78ms TEMIC BPV22NF DISTANCE (cm) TOC06 PULSE WIDTH (ms) PULSE WIDTH vs. DISTANCE TRANSMITTER POWER = 200mW/sr PULSE WIDTH = 1.63ms TEMIC BPV22NF DISTANCE (cm) toc09 TOC07 2ms/div, 115.2kbps AT 1cm DISTANCE, ms/div, 2400bps AT 1cm DISTANCE, toc10 toc11 2ms/div, 115.2kbps AT 10cm DISTANCE, ms/div, 2400bps AT 10cm DISTANCE, 4

5 (T A = +25 C, unless otherwise noted.) toc12 toc13 2ms/div, 115.2kbps AT 1m DISTANCE, ms/div, 2400bps AT 1m DISTANCE, 1 TXD 2 V CC 3 GND 4 PINC 5 SHDN 6 PGND 7 LEDC 8 5

6 GND TXD LEDC BIAS SHDN V CC BANDPASS FILTER ± ± ± µ V PGND PINC I PIN = (4mW/cm )(0.075cm )(1.8)(0.95) (0.6A/W) = 291nA µ ± ± R SET = VCC -VLED -VLEDC ISET 6

7 µ TRANSISTOR COUNT: 256 8LUMAXD.EPS 7

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