16-Bit, 1.6Msps, Low-Power, Fully Differential SAR ADC

The MAX11901 is a 16-bit, 1.6Msps, single-channel, fully differential SAR ADC with internal reference buffers. The MAX11901 provides excellent static and dynamic performance with best-in-class power consumption that directly scales with throughput. The device has a unipolar differential ±VREF input range. Supplies include a 3.3V supply for the reference buffers, a 1.8V analog supply, a 1.8V digital supply, and a 1.5V to 3.6V digital interface supply.

This ADC achieves 95.2dB SNR and -115dB THD, guarantees 16-bit resolution with no-missing codes and 0.5 LSB INL (max).

The MAX11901 communicates data using a SPI-compatible serial interface. The MAX11901 is offered in a 20-pin, 4mm x 4mm, TQFN package and is specified over the -40°C to +85°C operating temperature range.

Applications

* Automatic Test Equipment * Battery-Powered Equipment * Data Acquisition Systems * Medical Instrumentation * Process Control and Industrial Automation * Telecommunications * Test and Measurement

* High DC/AC Accuracy Provides Better Measurement Quality

* 16-Bit Resolution with No Missing Codes

* ±0.5 LSB INL and ±0.25 LSB DNL Maximum at 16 Bits

* 95.2dB SNR and 95.0dB SINAD at fIN = 10kHz

* -115dB THD at fIN = 10kHz

* High Sampling Rate SAR Architecture Enables Fast Settling and Acquisition

* 1.6Msps Throughput with No Pipeline Delay

* Integration Simplifies Design

* Integrated Reference Buffers, VREF = 2.5V to 3.6V

* ±VREF Unipolar Differential Analog Input Range

* Scalable Ultra-Low Power Supply Reduces Power Consumption

* 9mW at 1.6Msps

* Flexible Low-Voltage Supplies Save Cost

* 1.8V Analog and Digital Core Supply

* 1.5V to 3.6V Digital Interface Supply

* 3.3V REFVDD Reference Buffer Supply

* Flexible, Industry-Standard Serial Interface and Small Package Reduce Size

* SPI-/QSPI™-/MICROWIRE®/DSP-Compatible

* 20-Pin, 4mm x 4mm, TQFN Package