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DAC8580 Datasheet(PDF) 3 Page - Texas Instruments |
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DAC8580 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 21 page www.ti.com DAC8580 SLAS458B – JUNE 2005 – REVISED AUGUST 2005 ELECTRICAL CHARACTERISTICS (continued) All specifications at T A = TMIN to TMAX, +AVDD = +5 V, –AVDD = –5 V, DVDD = +5 V, VREF = 4.096 V, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CL <200 pF, RL = 2 kΩ, to 0.1% FS, 8-V step 0.35 0.65 Settling time (large signal) µs To 0.003% FS, 8-V step 1.0 Settling time (small signal) To 0.003% FS, 100-mV step 0.15 µs Slew rate From 10% to 90% of % FSR 35 V/µs Code-to-code glitch impulse 1 LSB change around major carry 5 mV Code-to-code glitch energy 1 LSB change around major carry 0.5 nV-s Limited by slew-boost circuit operation during 100 mV Overshoot large-signal swings. Digital feedthrough(2) SCLK toggling 0.5 nV-s Voltage output noise Frequency = 100 kHz 20 nV/ √Hz Frequency = 10 kHz 25 nV/ √Hz F = 0.1 Hz to 10 Hz 25 µVp-p Power supply rejection VDD varies ±10% 0.3 mV/V REFERENCE INPUT CHARACTERISTICS Reference input voltage range 3.0 AVDD V Reference input impedance 5 k Ω Reference input capacitance 5 pF Reference multiplying bandwidth Large signal (1 V peak-to-peak) 3 MHz Reference multiplying bandwidth Small signal 10 MHz AC CHARACTERISTICS DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS, –72 Digital filter is OFF DAC output signal (sine wave) frequency = 40 kHz, DAC input update rate = 1 MSPS, –72 –56 dB 2nd Harmonic distortion Digital filter oversampling rate = 16(3) DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS –100 Software calibrated, digital filter is OFF(4) DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS, –72 Digital filter is OFF DAC output signal (sine wave) frequency = 40 kHz, DAC input update rate= 1 MSPS, –72 –56 dB 3rd Harmonic distortion Digital filter oversampling rate = 16(3) DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS, –100 Software calibrated, digital filter is OFF(4) DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS, 72 dB Digital filter is OFF DAC output signal (sine wave) frequency = 40 kHz, Spurious free dynamic range (SFDR) DAC input update rate= 1 MSPS, 56 70 Digital filter oversampling rate =16(3) dB DAC output signal (sine wave) frequency = 1 kHz, DAC input update rate = 192 KSPS, –100 Software calibrated, digital filter is OFF(4) (2) Digital feedthrough error is defined as the area of the impulse injected into the analog output from the digital input, during the toggling of the digital input. (3) No analog filter is used. On-chip digital filter is set at oversampling ratio of 16. High-speed digitizer has 10-MHz input bandwidth. This specification is 100% tested during production. (4) Software calibration requires the user to calibrate the linearity error using a precision digitizer and provide the DAC inputs from a lookup table. 3 |
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