AD7854ARZ

AD7854ARZ is a high speed, low power, 12bit ADC. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and has a number of power-down options for low power applications. The device input voltage range is 0 to VREF (unipolar) and –VREF/2 to +VREF/2, centered at VREF/2 (bipolar). The coding is straight binary in unipolar mode and twos complement in bipolar mode. Input signal range is to the supply and the part is capable of converting full-power signals to 100KHz. It is used in applications such as battery-powered systems (personal digital assistants, medical instruments, mobile communications), pen computers, instrumentation and control systems, high speed modems.

• Signal to noise + distortion ratio is 70dB minimum at (AVDD = DVDD = +3.0V to +5.5V)
• Total harmonic distortion is -7dB max at (VIN = 10KHz sine wave, fSAMPLE = 200KHz)
• Integral nonlinearity is ±1LSB maximum at (5V reference VDD = 5V)
• Unipolar offset error is ±3LSB maximum at (AVDD = DVDD = +3.0V to +5.5V)
• Input capacitance is 20pF typical at (AVDD = DVDD = +3.0V to +5.5V)
• Input impedance is 150Kohm typical at (AVDD = DVDD = +3.0V to +5.5V)
• 15mW low power dissipation, system and self-calibration
• Operating temperature range from -40°C to +85°C
• 28-lead small outline package

注意

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party