AD7858LARSZ

AD7858LARSZ is a high-speed, low-power, 12bit ADC. This ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. This 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. The input track-and-hold acquires a signal in 500ns and features a pseudo-differential sampling scheme. This device's 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, and high-speed modems.

• System and self-calibration with autocalibration on power-up
• Flexible serial interface: 8051/SPI™/QSPI™/µP compatible, 6.85mW power dissipation
• Signal to noise + distortion ratio is 70dB min at (AVDD = DVDD = +3.0V to +5.5V)
• Total harmonic distortion is -78dB max at ( VIN = 10KHz sine wave, fSAMPLE = 200KHz (100KHz))
• Total unadjusted error is ±1LSB typical at (AVDD = DVDD = +3.0V to +5.5V)
• Analog input leakage current is ±1µA max at (AVDD = DVDD = +3.0V to +5.5V)
• Analog input capacitance is 20pF typical 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)
• REFOUT tempco is 20ppm/°C typical at (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