AD8401 Analog Devices, AD8401 Datasheet
AD8401
Related parts for AD8401
AD8401 Summary of contents
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... Analog input bandwidth is 200 kHz, and DAC output volt- age settling time is less than 4 s, making the AD8401 capable of controlling servo loops with speed and precision. The 8-bit data interface provides both read and write operation for parallel bus interfaces to microcontrollers and DSP proces- sors ...
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... AD8401–SPECIFICATIONS ADC ELECTRICAL CHARACTERISTICS Parameter Symbol STATIC PERFORMANCE Resolution N Total Unadjusted Error TUE Relative Accuracy INL Differential Nonlinearity DNL Offset Error V OSE Full-Scale Error A E Full-Scale DYNAMIC PERFORMANCE Signal-to-Noise Ratio SNR Total Harmonic Distortion THD Intermodulation Distortion IMD ...
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... L L Min Typ Max 8 2 –1 +1 –1 +1 –2 +2 –2.5 +2.5 –3 +3 –4 +4 –0.5 +0.5 –0.2 +0 +2.5 0.8 2.4 – AD8401 Units Bits LSB LSB LSB LSB LSB LSB LSB LSB LSB ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD8401 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... INT goes high on the rising edge RD. It will also be forced high when RESET is asserted. External Clock Input Pin. Accepts a TTL CMOS input logic levels. Analog ADC Ground Four Analog Inputs Address input that controls multiplexer. See Table I for address decode. –5– AD8401 DICE CHARACTERISTICS ...
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... An on-chip bandgap is provided as a voltage reference to both the DAC and the ADC. This reference is internal to the AD8401 and is not accessible to the user laser trimmed for both absolute accuracy and temperature coefficients. The refer- ence is internally buffered by a separate control amplifier for both the DAC and ADC to improve isolation between the converters ...
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... CLOCK The AD8401 uses an external clock that is TTL CMOS compatible. The external clock speed is 5 MHz and the duty cycle may vary from 30% to 70%. The external clock can be continuously operated between conversions. DIGITAL INTERFACE: ADC TIMING AND CONTROL Two basic ADC operating modes are available with the AD8401 ...
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... AD8401 An active low pulse, at any time, on the RESET pin asynchro- nously forces all DAC register bits to zero. The DAC output voltage becomes zero volts and stays at that value until a new data word is loaded into the DAC register with a new WR com- mand. The equivalent input logic for the DAC register loading is shown in Figure 9 ...
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... Figure 17. DAC Output Swing vs. Load Resistance 100 Figure 18. DAC Output Slew Rate Positive Transition 135 UNITS Figure 19. DAC Output Slew Rate Negative Transition 400 500 –9– AD8401 GND 100 1k 10k LOAD RESISTANCE – ...
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... AD8401 500mV 100 + + 1000pF TIME – /DIV Figure 20. DAC Output Swing with Capacitive Load Figure 22. Power Supply Rejection Ratio vs. Frequency 10.0 9.5 9.0 8.5 8.0 7 7.0 6.5 6.0 –50 Figure 21. Supply Current vs. Temperature OUTPUT = FULL SCALE 200mV ...
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... ADC. Therefore, to ensure correct operation of the ADC, the DAC register should not be updated while the ADC is converting. The AD8401 is configured for an input range of +3.0 volts Full Scale. The nominal transfer characteristic for this range is plot- ted in Figure 23. The output coding is natural binary with one LSB equal to 11 ...
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... AD8401 ADDRESS BUS AD899 Figure 24. AD8401 Interface to the AD899 Read-Channel Hard Disk Drive Circuit 0.0118 (0.30) 0.0040 (0.10) V (+5.0V AD8401 T/H IN 8-BIT ADC RESET CONTROL LOGIC INT BUSY DGND OUTLINE DIMENSIONS Dimensions shown in inches and (mm). ...