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OPA820 Datasheet(PDF) 3 Page - Texas Instruments |
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OPA820 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 24 page  www.ti.com DAC7811 SBAS337C – APRIL 2005 – REVISED JULY 2007 ELECTRICAL CHARACTERISTICS (continued) VDD = +2.7 V to +5.5 V; IOUT1 = Virtual GND; IOUT2 = 0V; VREF = +10 V; TA = full operating temperature. All specifications –40 °C to +125°C, unless otherwise noted. DAC7811 PARAMETER CONDITIONS MIN TYP MAX UNITS REFERENCE INPUT VREF range –15 15 V Input resistance 8 10 12 k Ω RFB resistance 8 10 12 k Ω LOGIC INPUTS AND OUTPUT(2) Input low voltage VIL VDD = +2.7V 0.6 V VIL VDD = +5V 0.8 V Input high voltage VIH VDD = +2.7V 2.1 V VIH VDD = +5V 2.4 V Input leakage current IIL 10 µA Input capacitance CIL 10 pF INTERFACE TIMING (see Figure 28) Clock input frequency fCLK 50 MHz Clock period tC 20 ns Clock pulse width high tCH 8 ns Clock pulse width low tCC 8 ns SYNC falling edge to SCLK tCSS 13 ns active edge setup time SCLK active edge to SYNC tCST 5 ns rising edge hold time Data setup time tDS 5 ns Data hold time tDH 3 ns SYNC high time tSH 30 ns VDD = +2.7V 25 35 ns SYNC inactive edge to SDO tDDS valid VDD = +5V 20 30 ns POWER REQUIREMENTS VDD 2.7 5.5 V IDD (normal operation) Logic inputs = 0V 5 µA VDD = +4.5 V to +5.5 V VIH = VDD and VIL = GND 0.8 5 µA VDD = +2.7 V to +3.6 V VIH = VDD and VIL = GND 0.4 2.5 µA AC CHARACTERISTICS(2) Output voltage settling time 0.2 µs Reference multiplying BW VREF = 7 VPP, Data = FFFh 10 MHz VREF = 0 V to 10 V, DAC glitch impulse 5 nV-s Data = 7FFh to 800h to 7FFh Feedthrough error VOUT/VREF Data = 000h, VREF = 100kHz –60 dB Digital feedthrough 2 nV-s Total harmonic distortion –105 dB Output spot noise voltage 18 nV/ √Hz (2) Specified by design and characterization; not production tested. 3 Submit Documentation Feedback |
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