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AD7801BRU 데이터시트(PDF) 2 Page - Analog Devices |
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AD7801BRU 데이터시트(HTML) 2 Page - Analog Devices |
2 / 16 page –2– REV. 0 AD7801–SPECIFICATIONS (VDD = +2.7 V to +5.5 V, Internal Reference; CL = 100 pF, RL = 10 k to VDD and GND. All specifications TMIN to TMAX unless otherwise noted.) Parameter B Versions1 Units Conditions/Comments STATIC PERFORMANCE Resolution 8 Bits Relative Accuracy 2 ±1 LSB max Differential Nonlinearity ±1 LSB max Guaranteed Monotonic Zero-Code Error @ +25 °C 3 LSB typ All Zeros Loaded to DAC Register Full-Scale Error –0.75 LSB typ All Ones Loaded to DAC Register Zero-Code Error Drift 100 µV/°C typ Gain Error 3 ±1 % FSR typ DAC REFERENCE INPUT REFIN Input Range 1 to VDD/2 V min/V max REFIN Input Impedance 10 M Ω typ OUTPUT CHARACTERISTICS Output Voltage Range 0 to VDD V min/V max Output Voltage Settling Time 2 µs max Typically 1.2 µs Slew Rate 7.5 V/ µs typ Digital-to-Analog Glitch Impulse 1 nV-s typ 1 LSB Change Around Major Carry Digital Feedthrough 0.2 nV-s typ DC Output Impedance 40 Ω typ Short Circuit Current 14 mA typ Power Supply Rejection Ratio 4 0.0003 %/% max ∆V DD = ± 10% LOGIC INPUTS Input Current ±10 µA max VINL, Input Low Voltage 0.8 V max VDD = +5 V VINL, Input Low Voltage 0.6 V max VDD = +3 V VINH, Input High Voltage 2.4 V min VDD = +5 V VINH, Input High Voltage 2.1 V min VDD = +3 V Pin Capacitance 7 pF max POWER REQUIREMENTS VDD 2.7/5.5 V min/V max IDD (Normal Mode) DAC Active and Excluding Load Current VDD = 3.3 V VIH = VDD and VIL = GND @ 25 °C 1.55 mA max See Figure 6 TMIN to TMAX 1.75 mA max VDD = 5.5 V @ 25 °C 2.35 mA max TMIN to TMAX 2.5 mA max IDD (Power-Down) @ 25 °C1 µA max VIH = VDD and VIL = GND TMIN to TMAX 2 µA max See Figure 18 NOTES 1Temperature ranges are as follows: B Version: –40 °C to +105°C 2Relative Accuracy is calculated using a reduced code range of 15 to 245. 3Gain Error is specified between Codes 15 and 245. The actual error at Code 15 is typically 3 LSB. 4Guaranteed by characterization at product release, not production tested. Specifications subject to change without notice. Figure 1. Timing Diagram for Parallel Data Write t1 t2 t4 t3 t5 t6 t7 t8 CS WR D7-D0 LDAC CLR |
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