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DAC8718 Datasheet(PDF) 8 Page - Texas Instruments |
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DAC8718 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 60 page DAC8718 SBAS467A – MAY 2009 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS: Single-Supply (continued) All specifications at TA = TMIN to TMAX, AVDD = +32V, AVSS = 0V, IOVDD = DVDD = +5V, REF-A and REF-B = +5V, gain = 6, AGND-x = DGND = 0V, data format = straight binary, and OFFSET-A = OFFSET-B = AGND, unless otherwise noted. DAC8718 PARAMETER CONDITIONS MIN TYP MAX UNIT DACs in the same group 10 nV-s DAC-to-DAC crosstalk(10) DACs among different groups 1 nV-s Digital crosstalk(11) 1 nV-s Digital feedthrough(12) 1 nV-s TA = +25°C at 10kHz, gain = 6 200 nV/ √Hz Output noise TA = +25°C at 10kHz, gain = 4 130 nV/ √Hz 0.1Hz to 10Hz, gain = 6 20 μVPP Power-supply rejection(13) AVDD = +33V to +36V 0.05 LSB ANALOG MONITOR PIN (VMON) Output impedance(14) TA = +25°C 2 k Ω Three-state leakage current 100 nA AUXILIARY ANALOG INPUT Input range AVSS AVDD V Input impedance TA = +25°C 2 k Ω (AIN-x to VMON) Input capacitance(15) 4 pF Input leakage current 30 nA REFERENCE INPUT Reference input voltage 1.0 5.5 V range(16) Reference input dc impedance 10 M Ω Reference input capacitance(15) 10 pF DIGITAL INPUT(15) IOVDD = +4.5V to +5.5V 3.8 0.3 + IOVDD V High-level input voltage, VIH IOVDD = +2.7V to +3.3V 2.3 0.3 + IOVDD V IOVDD = +1.7V to 2.0V 1.5 0.3 + IOVDD V IOVDD = +4.5V to +5.5V –0.3 0.8 V Low-level input voltage, VIL IOVDD = +2.7V to +3.3V –0.3 0.6 V IOVDD = +1.7V to 2.0V –0.3 0.3 V CLR, LDAC, RST, CS, and SDI ±1 μA Input current USB/BTC, RSTSEL, and GPIO-n ±5 μA CLR, LDAC, RST, CS, and SDI 5 pF Input capacitance USB/BTC and RSTSEL 12 pF GPIO-n 14 pF (10) DAC-to-DAC crosstalk is the glitch impulse that appears at the output of one DAC as a result of both the full-scale digital code and subsequent analog output change at another DAC. It is measured with LDAC tied low and expressed in nV-s. (11) Digital crosstalk is the glitch impulse transferred to the output of one converter as a result of a full-scale code change in the DAC input register of another converter. It is measured when the DAC output is not updated, and is expressed in nV-s. (12) Digital feedthrough is the glitch impulse injected to the output of a DAC as a result of a digital code change in the DAC input register of the same DAC. It is measured with the full-scale digital code change without updating the DAC output, and is expressed in nV-s. (13) The analog output must not be greater than (AVDD – 0.5V). (14) 8k Ω when VMON is connected to Reference Buffer A or B, and 4kΩ when VMON is connected to Offset DAC-A or -B. (15) Specified by design. (16) Reference input voltage ≤ DVDD. 8 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): DAC8718 |
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