AD7858BRZ

AD7858BRZ 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 part powers up with a set of default conditions and can operate as a read-only ADC. It is capable of a 200KHz throughput rate. The input track-and-hold acquires a signal in 500ns and features a pseudo-differential sampling scheme. The AD7858 voltage range is 0 to VREF with straight binary output coding. The input signal range is to the supply and the part is capable of converting full-power signals to 100KHz. Applications include battery-powered systems (personal digital assistants, medical instruments, mobile communications), pen computers, instrumentation and control systems, high-speed modems.

• System and self-calibration with autocalibration on power-up
• Signal to noise + distortion ratio is 71dB minimum at (AVDD = DVDD = +3.0V to +5.5V)
• Total harmonic distortion is -78dB maximum at (VIN = 10KHz sine wave, fSAMPLE = 200KHz (100KHz))
• Integral nonlinearity is ±1LSB max at (2.5V external reference VDD = 3V, VDD = 5V)
• Total unadjusted error is ±1LSB typical at (AVDD = DVDD = +3.0V to +5.5V)
• Analog input capacitance is 20pF typical at (AVDD = DVDD = +3.0V to +5.5V)
• Unipolar offset error is ±5LSB maximum at (AVDD = DVDD = +3.0V to +5.5V)
• Analog leakage current is ±1µA maximum at (AVDD = DVDD = +3.0V to +5.5V)
• Channel-to-channel isolation is -90dB typical at (VIN = 25KHz, AVDD = DVDD = +3.0V to +5.5V)
• Operating temperature range from -40°C to +85°C, 24-lead small outline package

Notes

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