This IC in a TO92 package is a 3-terminal adjustable current source with a 10000 to 1 range in operating current excellent current regulation & a wide dynamic voltage regulation of 1V to 40V. Current is established with one resistor connected between pins 1 R & 3 -V & no other parts are required. The current is equal to 0.0677V divided by the resistor in ohms i.e. for 1m A R 68andohm at 25C. Currents may be set in the range 1andmicro A to 10m A & regulation is 0.02 per volt. Initial current accuracy is andplusmn 3 typical. Reverse voltages of up to 20V will draw only a few microamps allowing the device to act as a rectifier & current source in AC applications. The current is also directly proportional to the temperature at the rate 0.33 per C. Zero drift operation can be obtained by adding one resistor & one diode. Applications include bias networks surge protection low power reference ramp generation LED driver & temperature sensing. ...

An easily calibrated precision temperature sensor whose operation is similar to a zener diode. The device has a breakdown voltage directly proportional to absolute temperature & has a linear output equal to 10m VC. The device operates over a current range of 400andmicro A to 5m A 1m A recommended & even when uncalibrated has a typical temperature error of only 2C over its operating range. When calibrated the error is 1C. ...

An adjustable 3-terminal negative voltage regulator capable of supplying 1.5A over a range of 1.2V to 37V. It is exceptionally easy to use & requires only two external resistors to set the output voltage. Besides having a higher performance compared with fixed regulators the LM337 offers full overload protection with current limiting thermal overload protection & safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. The adjustment terminal can be bypassed with a capacitor to ground to achieve very high ripple rejection ratios that are difficult to achieve with standard 3-terminal regulators. Output voltage is set by connecting a twin resistor divider between output & circuit ground & connecting the adjustment pin to the junction. A precision current regulator can also be made by connecting a fixed resistor only between the adjustment & output pins & connecting the load to the adjustment pin. The device is available in TO220 package LM337T. Specifications Output voltage 1.2V to 37 V Inputoutput differential voltage 40V max. Operating junction temperature 25 C to 125 CLine regulation 0.01 V Load regulation 0.1 Adjustment pin current 50micro A Reference voltage 1.25V typical Output noise 0.003 of Vout Ripple rejection ratio 65d B Long term stability 0.3 125 C ...

Four independent precision voltage comparators with a typical input offset voltage of 2m V & designed to operate from a single power supply. The input common-mode voltage range

Includes:: ground even though operated from a single power supply voltage. Identical to the 3302 but offering enhanced supply voltage range & voltage gain typically 200. Designed to directly interface with TTL & CMOS & when used with a
- supply will directly interface with MOS logic where the low power drain of the LM339 is a distinct advantage over standard comparators.


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A low power quad version of the 741 op-amp featuring high gain & internal compensation with a total supply current requirement for the IC that is less than a single conventional 741. Each op-amp has a class AB output stage & so has virtually no crossover distortion. Additional features include a low input offset voltage 1m V low input offset current typically 4n A low input bias current typically 30n A & a unity gain bandwidth of 1 M Hz. Channel separation is 120d B with a maximum operating voltage of plusmn 18 Vdc. ...

An audio amp in a 14-pin DIL package that requires very few external components to make a complete 2.5W power amplifier. In most cases however it is advisable to add a Min Res 2.7 Omega & Polyester 0.1micro F in series from pin 8 to ground & an Axial 4.7micro F from pin 1 to ground. High-Output-Crystal-Cartridge Power Amp A 2.5W rms power amp the 380 is shown in the circuit driven by a high output crystal pickup. The IC requires only 4 other components without tone control only two other components simply omit C1 & RV1. ...

A power-amp designed for use in low voltage especially battery-operated applications such as AM-FM radios portable tape cassettes intercoms power invertors etc. For minimum parts count C1 & C2 can be omitted. With pins 1 & 8 open circuit the gain is internally set to 20d B. With a 10micro F capacitor between pins 1 & 8 the gain is increased to 200d B & the gain can be set to anything between these limits by placing a resistor in series with this capacitor. For example a 1k 2 resistor here sets the gain to 50d B. The capacitor on pin 7 sets the power supply rejection ratio from 6d B with no connection to 50d B at 1k Hz with 10micro F. The inputs are referenced to ground while the output is automatically biased to half the supply voltage. Specifications Maximum supply voltage 15 Vdc Quiescent current 4m A Output power with 8 Omega load 325m W 6V supply THD at 125m W with 8 Omega load 0.2 6V supply Bandwidth 300k Hz Input resistance 50k Omega ...

- 4 dual input internally compensated amplifiers designed primarily for single power rail operation
- Current differencing

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An LED driver that will sequentially light ten LEDs when a gradually increasing voltage is applied to pin 5 dot mode or in bar mode all LEDs indicating voltages below input are lit. In dot mode there is a slight overlap so that at no point are all LEDs extinguished. A brightness control will set LED current between 2m A & 30m A. The drivers are stackable & displays with 100 or more LEDs are possible. Supply voltage 3V to 18V. The driver that sets the indication points can be referenced to a wide range of voltages. The LM3914 is available with linear steps. ...