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DAC7678SPW Fiches technique(PDF) 3 Page - Texas Instruments |
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DAC7678SPW Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 52 page DAC7678 www.ti.com SBAS493A – FEBRUARY 2010 – REVISED AUGUST 2010 ELECTRICAL CHARACTERISTICS At AVDD = 2.7V to 5.5V, External Reference Used, and over –40°C to +125°C, unless otherwise noted. DAC7678 PARAMETER TEST CONDITIONS UNIT MIN TYP MAX STATIC PERFORMANCE(1) Resolution 12 Bits Relative accuracy Measured by the line passing through codes 30 and 4050 ±0.3 ±1 LSB Differential nonlinearity 12-bit monotonic ±0.1 ±0.25 LSB Offset error Extrapolated from two-point line(2), unloaded 0.5 ±4 mV Offset error drift 3 mV/°C Full-scale error DAC register loaded with all '1's ±0.03 ±0.2 % of FSR Full-scale error drift 2 mV/°C Zero-code error DAC register loaded with all '0's 1 4 mV Zero-code error drift 2 mV/°C Gain error Extrapolated from two-point line(2), unloaded ±0.01 ±0.15 % of FSR ppm of Gain temperature coefficient ±1 FSR/°C OUTPUT CHARACTERISTICS(3) Output voltage range 0 AVDD V DACs unloaded, 1/4 scale to 3/4 scale 7 ms Output voltage settling time RL = 1MΩ, CL = 470 pF 12 ms Slew rate 0.75 V/ms RL = ∞ 470 pF Capacitive load stability RL = 2kΩ 1000 pF Code change glitch impulse 1LSB change around major carry 0.15 nV-s Digital feedthrough SCL toggling 1.5 nV-s Power-on glitch RL = ∞ 3 mV Channel-to-channel dc crosstalk Full-scale swing on adjacent channel 0.1 LSB DC output impedance At midscale input 4.5 Ω Short-circuit current DAC outputs shorted to GND 25 mA Power-up time (including settling time) Coming out of power-down mode, AVDD = 5V 50 ms AC PERFORMANCE(3) DAC output noise density TA = +25°C, at zero-code input, fOUT = 1kHz 20 nV/ √Hz TA = +25°C, at midscale input, 0.1Hz to 10Hz (external DAC output noise 3 mVPP reference used) (1) Linearity calculated using a reduced code range; output unloaded. (2) 12-bit: 30 and 4050 (3) Specified by design or characterization; not production tested. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): DAC7678 |
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