MAX1400CAI+

The MAX1400CAI+ is a +5V, 18bit, low-power, multichannel, oversampling (sigma-delta) ADC in 28 pin SSOP package. This ADC uses a sigma-delta modulator with a digital decimation filter to achieve true 16bit accuracy at an output data rate of 480sps. The user-selectable decimation factor of the digital filter allows the conversion resolution to be reduced in exchange for a higher output data rate. The modulator sampling frequency may be optimized for either lowest power dissipation or highest throughput rate. The MAX1403 operates from +5V. It offers three fully differential input channels that may be independently programmed with a gain between +1V/V and +128V/V. It can compensate an input-referred DC offset up to 117% of the selected full-scale range. These three differential channels may also be configured to operate as five pseudo differential input channels. Two additional, fully differential system-calibration channels are provided for gain and offset error correction.

• Supply voltage range is 4.75V to 5.25V
• Operating temperature range from 0°C to 70°C
• Low quiescent current of 250μA in operating mode and 2μA in power-down mode
• SPI/QSPI compatible 3-wire serial interface
• Operates with +5V analogue supply and +3V or +5V digital supply
• External access is provided to the multiplexer output to facilitate additional signal processing

Applications

Signal Processing, Portable Devices

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