Dual Simultaneous Sampling, 20-Bit, 1Msps, Differential SAR ADC

The MAX11960 is a 20-bit, 1Msps, dual simultaneous sampling, fully differential SAR ADC with internal reference buffers. The MAX11960 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 99dB SNR and -123dB THD, guarantees 20-bit resolution with no-missing codes and 5 LSB INL (max).

The MAX11960 communicates data using a SPI-compatible serial interface. The MAX11960 is offered in a 32-pin, 5mm × 5mm, TQFN package and is specified over the -40°C to +85°C operating temperature range.

Applications

* Automatic Test Equipment * Data Acquisition Systems * Encoder and Resolver in Motion Control * Medical Instrumentation * Process Control and Industrial Automation * Redundant Measurement * Telecommunications

* 20-Bit Resolution with No Missing Codes

* 1Msps Throughput with No Pipeline Delay

* 18mW at 1Msps, Ultra-Low Power Consumption

* ±1.5 LSB INL, Over Temperature

* ±1 LSB DNL Maximum at 20 Bits

* 99dB SNR at fIN = 10kHz

* 99dB SINAD at fIN = 10kHz

* -123dB THD at fIN = 10kHz

* ±VREF Unipolar Differential Analog Input Range

* VREF = 2.5V to 3.6V

* Integrated Reference Buffers

* 1.8V Analog and Digital Core Supply

* 3.3V REFVDD Reference Buffer Supply

* 1.5V to 3.6V Digital Interface Supply

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

* -40°C to +85°C Operation*

* 32-Pin, 5mm × 5mm, TQFN Package