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DAC714PG4 数据表(PDF) 7 Page - Texas Instruments |
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DAC714PG4 数据表(HTML) 7 Page - Texas Instruments |
7 / 22 page DAC714 7 SBAS032A www.ti.com FIGURE 1. DAC714 Block Diagram. OUTPUT VOLTAGE SWING The output amplifier of the DAC714 is designed to achieve a ±10V output range while operating on ±11.4V or higher power supplies. GAIN AND OFFSET ADJUSTMENTS Figure 3 illustrates the relationship of offset and gain adjust- ments for a bipolar connected D/A converter. Offset should be adjusted first to avoid interaction of adjustments. See Table I for calibration values and codes. These adjustments have a minimum range of ±0.3%. FIGURE 3. Relationship of Offset and Gain Adjustments. Offset Adjustment Apply the digital input code, 8000H, that produces the maxi- mum negative output voltage and adjust the offset potentiometer or the offset adjust D/A converter for –10V (or 0V unipolar). Shift Register DAC Latch 14 12 +10V Reference 8 6 7 DCOM +V CC ACOM V REF OUT Gain Adjust 4 SDI 5 SDO 16 2 A 0 3 A 1 1 16 CLK CLR 15 – V CC Offset Adjust 13 R BPO 11 R FB2 10 9 V OUT D/A Switches –V CC +2.5V 15k Ω 180 Ω 9750 Ω 250 Ω 10k Ω 10k Ω FIGURE 2. Equivalent Circuit of Digital Inputs. 1k Ω ESD Protection Circuit 6.8V 5pF Digital Input –V CC +V CC + Full Scale All Bits Logic 0 Range of Offset Adjust Offset Adj. Translates the Line Digital Input All Bits Logic 1 Full Scale Range Gain Adjust Rotates the Line – Full Scale MSB on All Others Off Bipolar Offset Range of Gain Adjust ≈ ±0.3% ≈ ±0.3% |
类似零件编号 - DAC714PG4 |
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类似说明 - DAC714PG4 |
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