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REF5050 Datasheet(PDF) 20 Page - Texas Instruments |
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REF5050 Datasheet(HTML) 20 Page - Texas Instruments |
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20 / 43 page  2 k Output Amplifier CAPP VOUTP VOUTN CAPN Current DAC 1 nF 1 nF 2 k DAC1282 SBAS490 – DECEMBER 2011 www.ti.com OUTPUT FILTER (CAPP, CAPN) The CAPP and CAPN pins are the connections for two external capacitors, one capacitor connects to CAPP and VOUTP and the other capacitor connects to CAPN and VOUTN. The capacitors are required to filter the DAC sampling noise. The capacitor values are 1 nF; capacitors with low voltage coefficients should be used (C0G ceramic or film). As seen in Figure 36, the external capacitors form an analog low-pass filter with the internal feedback resistors. After step changes to the data in the sine, dc, and digital data modes, the settling of the DAC and the analog filter is 100- µs typical, as shown in Figure 46. In pulse mode, the filter is internally disabled, yielding shorter settling time. Figure 36. Output Filter 20 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): DAC1282 |
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