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DAC122K5 数据表(PDF) 3 Page - Texas Instruments |
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DAC122K5 数据表(HTML) 3 Page - Texas Instruments |
3 / 26 page DAC1220 www.ti.com...................................................................................................................................... SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009 ELECTRICAL CHARACTERISTICS All specifications at TMIN to TMAX, AVDD = DVDD = +5V, fXIN = 2.5MHz, VREF = +2.5V, and 16-bit mode, unless otherwise noted. DAC1220E PARAMETER CONDITIONS MIN TYP MAX UNIT ACCURACY Monotonicity 16 Bits Monotonicity 20-bit mode 20 Bits Linearity error ±15(1) ppm of FSR Unipolar offset error and gain error(2) ±60 ppm of FSR Unipolar offset error drift(3) 1 ppm/°C Bipolar zero offset error(2) VOUT = VREF ±15 ppm of FSR Bipolar zero offset drift(3) 1 ppm/°C Gain error(2) ±150 ppm of FSR Gain error drift(3) 2 ppm/°C Power-supply rejection ratio (PSRR) at DC, dB = –20log( ΔVOUT/ΔVDD) 60 dB ANALOG OUTPUT Output voltage(4) 0 2 × VREF V Output current 0.5 mA Capacitive load 500 pF Short-circuit current ±20 mA Short-circuit duration GND or VDD Indefinite DYNAMIC PERFORMANCE Settling time(5) To ±0.012% 1.8 2 ms 20-bit mode, to ±0.003% 15 ms Output noise voltage 0.1Hz to 10Hz 1 μVRMS REFERENCE INPUT Input voltage 2.25 2.5 2.75 V Input impedance 100 k Ω DIGITAL INPUT/OUTPUT Logic family TTL-compatible CMOS Logic levels (all except XIN) VIH 2.0 DVDD + 0.3 V VIL –0.3 0.8 V VOH IOH = –0.8mA 3.6 V VOL IOL = 1.6mA 0.4 V Input-leakage current ±10 μA XIN frequency range (fXIN) 0.5 2.5 MHz Offset binary two's complement Data format User-programmable or straight binary POWER-SUPPLY REQUIREMENTS Power-supply voltage 4.75 5.25 V Supply current Analog current 360 μA Digital current 140 μA Analog current 20-bit mode 460 μA (1) Valid from AGND + 20mV to AVDD – 20mV. (2) Applies after calibration. (3) Recalibration can remove these errors. (4) Ideal output voltage; does not take into account gain and offset error. (5) Valid from AGND + 20mV to AVDD – 20mV. Outside of this range, settling time can be twice the value indicated. For 16-bit mode, C1 = 2.2nF, C2 = 0.22nF; for 20-bit mode, C1 = 10nF, C2 = 3.3nF. Copyright © 1998–2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): DAC1220 |
类似零件编号 - DAC122K5 |
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类似说明 - DAC122K5 |
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