package dimensions bottom view typical performance fast settling, wideband operational amplifier general description the spt220 is a wide bandwidth dc-coupled operational ampli- fier that defines the state-of-the-art in high speed op amps. a - 3db bandwidth of dc to 190mhz is achieved using a current feedback architecture design. ultra-fast settling time (8nsec to 0.1%) and slew rate (7000v/ m sec) make the spt220 a superior amplifier for pulsed and digital applications. since thermal tail has been eliminated, the spt220 settles fast and remains solidly at the desired level. flat gain and linear phase (1.2 deviation from linear) from dc to beyond 100mhz help the spt220 to achieve distortion levels uncommonly low relative to conventional op amps. using the spt220 is as easy as adding power supplies and a gain-setting resistor. the result is reliable, consistent perfor- mance because such characteristics as bandwidth and settling time are virtually independent of gain setting. unlike conventional op amp designs where the optimum gain-bandwidth product occurs at a high gain, minimum settling time at a gain of -1, maximum slew rate at a gain of +1, et cetera, the spt220 offers predictable response at gain settings from 1 to 50. this, coupled with consistent performance from unit to unit with no external compensation, makes the spt220 a real time and cost- saver in design and production situations alike. this combination of features makes the spt220 appropriate for a broad range of applications. the wide bandwidth, dc coupling, and fast settling lend themselves well to high speed d to a and flash a to d applications. both receivers and transmitters in optical fiber systems have similar requirements. high gain and phase linearity and corresponding low distortion make the spt220 ideal for many digital communication system applica- tions, such as in the demodulator, where the need for both dc coupling and high frequency amplification creates requirements that are difficult to meet. the spt220 is constructed using thin film resistor/bipolar transis- tor technology, and is available in the following versions: SPT220AIH -25 c to +85 c 12-pin to-8 can. features n -3db bandwidth of 190mhz n 0.1% settling in 8ns n 7000v/ m s slew rate n 1.9ns rise and fall times n low distortion, linear phase n direct replacement for clc220 applications n very high-speed a to d, d to a conversion n high-speed fiber optic systems n baseband and video communications n radar and if processors n very fast risetime pulse amplifiers 4755 forge road, colorado springs, colorado 80907, usa phone: (719) 528-2300 fax: (719) 528-2370 website: http://www.spt.com e-mail: sales@spt.com pulse response
2 10/9/98 spt220 spt220 electrical characteristics (a v = +20,v cc = 15v, r l = 200 w , r f = 1500 w; unless specified) absolute maximum ratings min/max ratings are based on product characterization and simulation. individual parameters are tested as noted. outgoing quali ty levels are determined from tested parameters.
3 10/9/98 spt220 spt220 typical performance characteristics (t a = +25 , a v = +20, v cc = 15v, r l = 200 w ; unless specified)
4 10/9/98 spt220 signal processing technologies, inc. reserves the right to change products and specifications without notice. permission is her eby expressly granted to copy this literature for informational purposes only. copying this material for any other use is strictly prohibited. warning - life support applica tions policy - spt products should not be used within life support systems without the specific written consent of spt. a life support system is a product or sys tem intended to support or sustain life which, if it fails, can be reasonably expected to result in significant personal injury or death.
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