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AD7808BR Datasheet(PDF) 3 Page - Analog Devices |
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AD7808BR Datasheet(HTML) 3 Page - Analog Devices |
3 / 28 page Parameter B Grade1 Units Comments STATIC PERFORMANCE MAIN DAC Resolution 10 Bits Relative Accuracy ±4 LSB max Gain Error ±3 % FSR max Bias Offset Error2 ±60 mV max DAC Code = 0.5 Full Scale Zero-Scale Error ±35 mV max DAC Code = 000H for Offset Binary Monotonicity 9 Bits and 200H for Twos Complement Minimum Load Resistance 2 k Ω min Coding SUB DAC Resolution 8 Bits Differential Nonlinearity ±0.125 LSB typ Refers to an LSB of the Main DAC ±0.5 LSB max OUTPUT CHARACTERISTICS Output Voltage Range3 VBIAS ± 15/16 × V BIAS V Twos Complement Coding VBIAS/16 to 31/16 × V BIAS V Offset Binary Coding Voltage Output Settling Time to 10 Bits 4 µs max Typically 1.5 µs Slew Rate 2.5 V/ µs typ Digital-to-Analog Glitch Impulse 1 nV-s typ 1 LSB Change Around the Major Carry Digital Feedthrough 0.5 nV-s typ Digital Crosstalk 0.5 nV-s typ Analog Crosstalk ±0.2 LSB typ DC Output Impedance 2 Ω typ Power Supply Rejection Ratio 0.002 %/% typ ∆V DD ± 10% DAC REFERENCE INPUTS REF IN Range 1.0 to VDD/2 V min to V max REF IN Input Leakage ±1 µA max Typically ±1 nA DIGITAL INPUTS Input High Voltage, VIH @ VDD = 5 V 2.4 V min Input High Voltage, VIH @ VDD = 3.3 V 2.1 V min Input Low Voltage, VIL @ VDD = 5 V 0.8 V max Input Low Voltage, VIL @ VDD = 3.3 V 0.6 V max Input Leakage Current ±10 µA max Input Capacitance 8 pF max Input Coding Twos Comp/Binary REFERENCE OUTPUT REF OUT Output Voltage 1.23 V nom REF OUT Error ±8 % max REF OUT Temperature Coefficient –100 ppm/ °C typ REF OUT Output Impedance 5 k Ω nom POWER REQUIREMENTS VDD (AVDD and DVDD) 3/5.5 V min to V max IDD (AIDD Plus DIDD) Excluding Load Currents Normal Mode 18 mA max VIH = VDD, VIL = DGND System Standby (SSTBY) Mode 250 µA max VIH = VDD, VIL = DGND Power-Down ( PD) Mode @ +25 °C1 µA max VIH = VDD, VIL = DGND TMIN–TMAX 3 µA max Power Dissipation Excluding Power Dissipated in Load Normal Mode 99 mW max System Standby (SSTBY) Mode 1.38 mW max Power-Down ( PD) Mode @ +25 °C 5.5 µW max TMIN–TMAX 16.5 µW max NOTES 1Temperature range is – 40 °C to +85°C. 2Can be minimized using the Sub DAC. 3V BIAS is the center of the output voltage swing and can be VDD/2, Internal Reference or REFIN as determined by MX1 and MX0 in the channel control register. Specifications subject to change without notice. (AVDD and DVDD = 3.3 V 10% to 5 V 10%; AGND = DGND = 0 V; Reference = Internal Reference; CL = 100 pF; RL = 2 k to GND. Sub DAC at Midscale. All specifications TMIN to TMAX unless otherwise noted.) AD7808/AD7809–SPECIFICATIONS AD7804/AD7805/AD7808/AD7809 REV. A –3– |
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