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CLC1005 Datasheet(PDF) 12 Page - Exar Corporation |
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CLC1005 Datasheet(HTML) 12 Page - Exar Corporation |
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12 / 19 page  © 2007-2015 Exar Corporation 12 / 19 exar.com/CLC1005 Rev 2D CLC1005, CLC1015, CLC2005 Application Information General Description The CLC1005, CLC1015, and CLC2005 are single supply, general purpose, voltage-feedback amplifiers fabricated on a complementary bipolar process using a patented topography. They feature a rail-to-rail output stage and are unity gain stable. Both gain bandwidth and slew rate are insensitive to temperature. The common mode input range extends to 300mV below ground and to 1.2V below Vs. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. The design is short circuit protected and offers “soft” saturation protection that improves recovery time. Figures 1, 2, and 3 illustrate typical circuit configurations for non-inverting, inverting, and unity gain topologies for dual supply applications. They show the recommended bypass capacitor values and overall closed loop gain equations. Figure 4 shows the typical non-inverting gain circuit for single supply applications. + - Rf 0.1 F 6.8 F Output G = 1 + (Rf/Rg) Input +Vs -Vs Rg 0.1 F 6.8 F RL Figure 1: Typical Non-Inverting Gain Circuit + - Rf 0.1 F 6.8 F Output G = - (Rf/Rg) For optimum input offset voltage set R1 = Rf || Rg Input +Vs -Vs 0.1 F 6.8 F RL Rg R1 Figure 2: Typical Inverting Gain Circuit + - 0.1 F 6.8 F Output G = 1 Input +Vs -Vs 0.1 F 6.8 F RL Figure 3: Unity Gain Circuit + - Rf 0.1F 6.8F Out In +Vs + Rg Figure 4: Single Supply Non-Inverting Gain Circuit At non-inverting gains other than G = +1, keep Rg below 1kΩ to minimize peaking; thus for optimum response at a gain of +2, a feedback resistor of 1kΩ is recommended. Figure 5 illustrates the CLC1005, CLC1015 and CLC2005 frequency response with both 1kΩ and 2kΩ feedback resistors. Frequency (MHz) 1 10 100 Rf = 2kΩ Rf = 1kΩ G = 2 RL = 2kΩ Vs = +5V Figure 5: Frequency Response vs. Rf |
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