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DAC7634EB Datasheet(PDF) 20 Page - Texas Instruments |
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DAC7634EB Datasheet(HTML) 20 Page - Texas Instruments |
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20 / 33 page ![]() www.ti.com V OUT V OUTA Sense V OUTA AGND V SS V REFL AB Sense V REFL AB V REFH AB V REFH AB Sense V OUTB Sense V OUTB 48 47 46 45 44 43 42 41 40 39 DAC7634 +2.5V +V OPA2350 98k Ω +0.050V 2k Ω V OUT 1000pF 1000pF 2200pF +V 100 Ω 2200pF 100 Ω L has been chosen to be 50 mV to allow for current sinking voltage drops across the 100- Ω resistor and the output stage of the buffer operational amplifier. NOTE: V REF 0000 H 2000 H 4000 H 6000 H 8000 H Digital Input Code A000 H C000 H E000 H FFFF H 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 0000 H 2000 H 4000 H 6000 H 8000 H Digital Input Code A000 H C000 H E000 H FFFF H 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 +2.5V +V +1.25V +V V OUT V OUTA Sense V OUTA AGND V SS V REFL AB Sense V REFL AB V REFH AB V REFH AB Sense V OUTB Sense V OUTB 48 47 46 45 44 43 42 41 40 39 DAC7634 OPA2350 V OUT 1000pF 1000pF 2200pF +V 100 Ω 100 Ω 2200pF DAC7634 SBAS134B – JULY 2004 – REVISED DECEMBER 2005 Figure 53. Single-Supply Buffered Reference With a Reference Low of 50 mV (1/2 DAC7634) Figure 54. Integral Linearity and Differential Linearity Figure 55. Integral Linearity and Differential Linearity Error Curves for Figure 53 Error Curves for Figure 56 Figure 56. Single-Supply Buffered Reference With VREFL = 1.25 V and VREFH = 2.5 V (1/2 DAC7634) 20 |
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