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SN10501DGKR Datasheet(PDF) 10 Page - Texas Instruments |
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SN10501DGKR Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 23 page  SN10501 SN10502 SN10503 SLOS408A − MARCH 2003 − REVISED DECEMBER 2003 www.ti.com 10 APPLICATION INFORMATION HIGH-SPEED OPERATIONAL AMPLIFIERS The SN1050x operational amplifiers are a family of single, dual, and triple rail-to-rail output voltage feedback amplifiers. The SN1050x family combines both a high slew rate and a rail-to-rail output stage. Applications Section Contents D Wideband, Noninverting Operation D Wideband, Inverting Gain Operation D Video Drive Circuits D Single Supply Operation D Power Supply Decoupling Techniques and Recommendations D Active Filtering With the SN1050x D Driving Capacitive Loads D Board Layout D Thermal Analysis D Additional Reference Material D Mechanical Package Drawings WIDEBAND, NONINVERTING OPERATION The SN1050x is a family of unity gain stable rail-to-rail output voltage feedback operational amplifiers designed to operate from a single 3-V to 15-V power supply. Figure 33 is the noninverting gain configuration of 2 V/V used to demonstrate the typical performance curves. Voltage feedback amplifiers, unlike current feedback designs, can use a wide range of resistors values to set their gain with minimal impact on their stability and frequency response. Larger-valued resistors decrease the loading effect of the feedback network on the output of the amplifier, but this enhancement comes at the expense of additional noise and potentially lower bandwidth. Feedback resistor values between 1 k Ω and 2 kΩ are recommended for most situations. _ + Rf 1.3 k Ω 49.9 Ω 100 pF 0.1 µF 6.8 µF −VS −5 V Rg 50 Ω Source + VI 100 pF 0.1 µF 6.8 µF + +VS 5 V VO 499 Ω 1.3 k Ω Figure 33. Wideband, Noninverting Gain Configuration WIDEBAND, INVERTING OPERATION Since the SN1050x family are general-purpose, wideband voltage-feedback amplifiers, several familiar operational amplifier applications circuits are available to the designer. Figure 34 shows a typical inverting configuration where the input and output impedances and noise gain from Figure 33 are retained in an inverting circuit configuration. Inverting operation is one of the more common requirements and offers several performance benefits. The inverting configuration shows improved slew rates and distortion due to the pseudo-static voltage maintained on the inverting input. _ + Rg 1.3 k Ω RT 649 Ω 100 pF 0.1 µF 6.8 µF −VS −5 V 50 Ω Source + VI 100 pF 0.1 µF 6.8 µF + +VS 5 V VO CT 0.1 µF Rf 1.3 k Ω RM 52.3 Ω 499 Ω Figure 34. Wideband, Inverting Gain Configuration |
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