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DAC7552IRGTTG4 Folha de dados(PDF) 3 Page - Texas Instruments |
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DAC7552IRGTTG4 Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 24 page DAC7552 www.ti.com SLAS442D – JANUARY 2005 – REVISED JUNE 2011 ELECTRICAL CHARACTERISTICS (continued) VDD = 2.7 V to 5.5 V, VREF = VDD, RL = 2 kΩ to GND; CL = 200 pF to GND; all specifications –40°C to 105°C, unless otherwise specified PARAMETER TEST CONDITIONS MIN TYP MAX UNITS OUTPUT CHARACTERISTICS(2) Output voltage range 0 VREF V Output voltage settling time RL = 2 kΩ; 0 pF < CL < 200 pF 5 µs Slew rate 1.8 V/ µs Capacitive load stability RL = ∞ 470 pF RL = 2 kΩ 1000 Digital-to-analog glitch impulse 1 LSB change around major carry 0.1 nV-s Channel-to-channel crosstalk 1-kHz full-scale sine wave, –100 dB outputs unloaded Digital feedthrough 0.1 nV-s Output noise density (10-kHz offset 120 nV/rtHz frequency) Total harmonic distortion FOUT = 1 kHz, FS = 1 MSPS, –85 dB BW = 20 kHz DC output impedance 1 Ω Short-circuit current VDD = 5 V 50 mA VDD = 3 V 20 Power-up time Coming out of power-down mode, 15 VDD = 5 V µs Coming out of power-down mode, 15 VDD = 3 V REFERENCE INPUT VREF Input range 0 VDD V Reference input impedance VREFA and VREFB shorted together 50 k Ω VREFA = VREFB = VDD = 5 V, 100 250 VREFA and VREFB shorted together Reference current µA VREFA = VREFB = VDD = 3 V, 60 123 VREFA and VREFB shorted together LOGIC INPUTS(2) Input current ±1 µA VIN_L, Input low voltage IOVDD ≥ 2.7 V 0.3 IOVDD V VIN_H, Input high voltage IOVDD ≥ 2.7 V 0.7 IOVDD V Pin capacitance 3 pF POWER REQUIREMENTS VDD,, IOVDD (3) 2.7 5.5 V IDD(normal operation) DAC active and excluding load current VDD = 3.6 V to 5.5 V 300 440 VIH = IOVDD and VIL = GND µA VDD = 2.7 V to 3.6 V 250 400 IDD (all power-down modes) VDD = 3.6 V to 5.5 V 0.2 2 VIH = IOVDD and VIL = GND µA VDD = 2.7 V to 3.6 V 0.05 2 POWER EFFICIENCY IOUT/IDD ILOAD = 2 mA, VDD = 5 V 93% (2) Specified by design and characterization, not production tested. For 1.8 V < IOVDD < 2.7 V, It is recommended that VIH = IOVDD, VIL = GND. (3) IOVDD operates down to 1.8 V with slightly degraded timing, as long as VIH = IOVDD and VIL = GND. Copyright © 2005–2011, Texas Instruments Incorporated 3 |
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