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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD9705-EB датащи(PDF) 41 Page - Analog Devices |
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AD9705-EB датащи(HTML) 41 Page - Analog Devices |
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41 / 52 page  AD9704/AD9705/AD9706/AD9707 Rev. 0 | Page 41 of 52 DIFFERENTIAL BUFFERED OUTPUT USING AN OP AMP A dual op amp (see the circuit shown in Figure 92) can be used in a differential version of the single-ended buffer shown in Figure 91. The same R-C network is used to form a 1-pole differential, low-pass filter to isolate the op amp inputs from the high frequency images produced by the DAC outputs. The feed- back resistors, RFB, determine the peak differential output voltage by the formula FS FB OUT I R V × = The maximum and minimum voltages out of the amplifier are ) 1 ( B FB REF MAX R R V V + × = OUT MAX MIN V V V − = respectively. The common-mode voltage of the output is determined by the formula 2 OUT MAX CM V V V − = AD9704/AD9705 AD9706/AD9707 IOUTA IOUTB RFB ADA4841 VOUT REFIO 23 21 RS OTCM 19 CF C ADA4841 RFB RB CF RS RB 20 Figure 92. Single-Supply Differential Buffer |
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