Smallest bipolar ADCs have internal reference, save over 88% of board space

The MAX11166 and MAX11167 communicate using an SPI-compatible serial interface at 2.5V, 3V, 3.3V, or 5V logic levels and have sample rates of 500ksps and 250ksps, respectively. The serial interface can be used to daisy-chain multiple ADCs for multichannel simultaneous-sampling applications; it also provides a “busy” indicator option for simplified system synchronization and timing. Maxim's proprietary input-charge-pump architecture allows direct sampling of high-impedance sources, eliminating the need for external analog buffers to drive the ADC inputs in some applications.

Key Advantages

High integration: industry's smallest, 16-bit ADCs with integrated reference with buffer and ±5V true biopolar measurement above and below ground using Beyond-the-Rails technology

Excellent analog performance: 92.6dB SNR supports wide-dynamic-range applications with best-in-class linearity (typically ±0.5 LSB INL, ±0.2 LSB DNL) allows precise measurements at half the power of nearest competitors

Ease of design: integrated precision voltage reference with reference buffer and high-impedance input saves power and space.

“Previously, engineers had to measure a true bipolar signal with a good amount of external circuitry,” said Susie Inouye, Research Director at Databeans. “The MAX11166 and MAX11167 family offers a great combination of small size and wide input range, and the internal reference lets engineers simplify their designs.”