MAX11270 24-Bit ADC

By Maxim Integrated 84

MAX11270 24-Bit ADC

Maxim Integrated's MAX11270 is a 24-bit delta-sigma ADC that achieves excellent 130 dB SNR while dissipating an ultra-low 10 mW. Sample rates up to 64 ksps allow both precision DC and AC measurements. Integral nonlinearity is guaranteed to 4 ppm maximum. The THD is -122 dB. The MAX11270 communicates via an SPI-compatible serial interface and is available in a small 24-pin TSSOP package.

The MAX11270 offers a 6.5 nV/ noise programmable gain amplifier with gain settings between 1x to 128x. Optional buffers are also included to provide isolation of the signal inputs from the switched capacitor sampling network. This allows the MAX11270 to be used with high-impedance sources without compromising available dynamic range.

The MAX11270 operates from a single 2.7 V to 3.6 V analog supply, or split ±1.8 V analog supplies, allowing the analog input to be sampled below ground. The digital supply range is 2.0 V to 3.6 V, allowing communication with 2.5 V, 3 V, or 3.3 V logic.


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