DESCRIPTION NECs NE34018 is a low cost gallium arsenide Hetero-Junction FET housed in a miniature (SOT-343) plastic surface mount package. The device is fabricated using ion implantation for improved RF and DC performance, reliability, and uniformity. Its low noise figure, high gain, small size and weight make it an ideal low noise amplifier transistor in the 1- 3 GHz frequency range. The NE34018 is suitable for GPS, PCS, WLAN, MMDS, and other commercial applications. NECs stringent quality assurance and test procedures ensure the highest reliability and performance.
FEATURES • LOW COST MINIATURE PLASTIC PACKAGE (SOT-343) • LOW NOISE FIGURE: 0.6 dB typical at 2 GHz • HIGH ASSOCIATED GAIN: 16.0 dB typical at 2 GHz • LG = 0.6 µm, WG = 400 µm • TAPE & REEL PACKAGING
DESCRIPTION iC-LQNP is a sensor for pulse and alternating light with a monolithically integrated photodiode. The device supersedes conventional photoreceivers, such as those in light barriers, for example. Changes in the photocurrent are amplified whereas the photocurrents caused by background light are electronically suppressed with over 60 dB (at 100 Hz).
FEATURES ♦ Fast response amplifier with on-chip photodiode ♦ High interference immunity due to monolithic design ♦ Active photodiode area of ca. 1 mm² ♦ Suitable for visible light and near infrared ♦ Integrated band-pass filter with 140 kHz center frequency ♦ Maximum gain obtained for pulse light of 1.4 µs and upwards ♦ High LF and DC (ambient) light suppression ♦ Transfer characteristics irrespective of ambient light level ♦ Soft signal and noise limiter with excess ambient light ♦ Fast recovery from flashes ♦ Complementary analogue current source outputs, transimpedance can be set by external resistor ♦ Single 5 to 12 V supply, low power consumption also with bright ambient light ♦ Options: customised COB versions
APPLICATIONS ♦ Receiver for through beam and reflection light barriers with background suppression (sunlight) e.g. for presence detection in power operated gates, doors and windows etc.
FEATURES ♦ Optimised for M-type laser diodes (single supply, case grounded) ♦ CW operation up to 350 mA from a single supply of 3.6 to 15 V ♦ Rapid soft start after power-on ♦ Simple power adjustment via an external resistor ♦ Integrated reverse polarity protection for the iC and laser diode ♦ Strong suppression of transients with small external capacitors; integrated flyback path ♦ Permanent shutdown with excessive temperature and overcurrent (i.e. if the laser diode is damaged or the feedback current path fails) ♦ Two feedback inputs permit all current laser diode types to be used (M/P/N configurations) ♦ Modulation via the feedback inputs possible ♦ Wide monitor current range from 2.5 µA to 6.25 mA
FEATURES ♦ CW operation up to 300 mA from 2.4 to 15 V supply voltage ♦ Rapid soft start after power-on typical within 70 µs ♦ Optimised for N-type laser diodes ♦ Simple output power adjustment via an external resistor (APC) ♦ Power control loop accuracy better than 1.5 % with changes in temperature, supply voltage and load current ♦ Integrated reverse polarity protection for the iC and laser diode ♦ Strong suppression of transients with very small external capacitors; integrated flyback path ♦ Permanent shutdown with excessive temperature and overcurrent (i.e. if the laser diode is damaged or the feedback current path fails) ♦ Two feedback inputs permit all current LD types to be used (N/P/M configurations) ♦ Modulation via the feedback inputs is possible ♦ Wide monitor current range from 2.5 µA to 6.25 mA ♦ Pin compatible to iC-WK and iC-WKL (SO8 package)
FEATURES ♦ Laser diode driver of up to 250 mA ♦ Averaging control of laser power ♦ Protective functions to prevent destruction of laser diode ♦ Laser-current monitor with current or voltage output ♦ Integrated RC oscillator up to 4 MHz ♦ Integrated 16:1 divider for pulse generation in the kHz range ♦ Stable 1:1 pulse duty ratio ♦ Simple adjustment of the laser power via external resistor ♦ Soft-start at power-on ♦ Complementary pulse repetition frequency output for ECL level ♦ Shutdown in case of overtemperature ♦ Single 5 V power supply ♦ Very few external components ♦ iC-VJ for laser diodes with 50 to 500 µA monitor current ♦ iC-VJZ for laser diodes with 0.15 to 1.5 mA monitor current
APPLICATIONS ♦ Transmitter for laser light barriers from 1 to 200 kHz
FEATURES ✦ Dual channel CW operation with up to 750 mA per channel ✦ Up to 1500 mA with both channels combined ✦ 2.8 V to 8 V power supply ✦ Operation with or without µController ✦ Individual enable input per channel ✦ Control loop accuracy better than 1% ✦ Internal programmable logarithmic monitor resistor ✦ Operating point setup with 10 bit logarithmic resolution ✦ ACC or APC mode individually configurable for each channel ✦ A/D converters for analog monitoring ✦ Serial programming interface (SPI or I²C compliant) ✦ Configuration content verification and validation ✦ Laser channel disable with programmable overcurrent threshold ✦ Optimized for N-type laser diodes ✦ Low drop linear regulator for 3.3 V ✦ Low current standby mode ✦ Temperature monitor ✦ Temperature range -40 . . . 85 °C