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AM-1435 Datasheet(PDF) 3 Page - DATEL, Inc. |
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AM-1435 Datasheet(HTML) 3 Page - DATEL, Inc. |
3 / 4 page (R1) x (R4) R1 + R4 R2 = TYPICAL CONNECTION AND COMPENSATION The typical connection diagram (above) shows the AM-1435 in a unity- gain inverting configuration. When used in any conventional operational- amplifier configuration, the AM-1435 (as a non-inverting amplifier) requires a noise gain of at least two (noise gain = 1 + R4/R1). The 2pF compensation capacitor, C1, at pin 3 is required for stable operation when the noise gain is less than 10. Compensation for bias current is provided by R2 and its value is determined by the formula: The offset adjust potentiometer R3 and the compensation capacitor C4 are optional. Note, however, that C4 should be implemented when driving capacitive loads to prevent oscillation of the output stage. Operation of the AM-1435 at low impedances requires careful attention to include the feedback resistor as a part of the total output load. Figure 2. Typical Connection Diagram OFFSET ADJUST (OPT.) +15V –15V + 1 2 13 14 12 7 3 8 500 W 1k W + + + 1µF R1 C1 C2 1µF C3 1µF C4 (OPT.) INPUT R2 2pF R3 R4 OUTPUT AM-1435 6 5 4 – 1k W 1k W Figure 3. Gain and Phase vs. Frequency (Uncompensated) -20 0 20 40 60 80 100 120 100 200 500 1k 10k 100k 1M 10M 100M 180° 140° 100° 60° 40° 0° FREQUENCY (Hz) PHASE ANGLE GAIN Figure 4. Gain and Phase vs. Frequency (Compensated 2pF) -20 0 20 40 60 80 100 120 100 200 500 1k 10k 100k 1M 10M 100M 0° 20° 60° 100° 140° 180° FREQUENCY (Hz) PHASE ANGLE GAIN DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com AM-1435 Ultra-Fast, Wideband Operational Amplifiers MDA_AM-1435.C02 Page 3 of 4 |
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Descripción similar - AM-1435 |
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