Analog Devices / Maxim Integrated MAX11902 Low-Power Fully Differential SAR ADC
Analog Devices Inc. MAX11902 Low-Power Fully Differential SAR ADC is an 18-bit, 1Msps, single-channel, fully differential SAR analog-to-digital converter with internal reference buffers. The MAX11902 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 98.9dB SNR and -123dB THD, guarantees 18-bit resolution with no-missing codes and 1.5 LSB INL (max). The MAX11902 communicates data using an SPI-compatible serial interface.
Features
- High DC/AC accuracy provides better measurement quality
- 18-Bit resolution with no missing codes
- ±1.5 LSB INL and ±0.5 LSB DNL maximum at 18 bits
- 98.9dB SNR and 98.8dB SINAD at fIN = 10kHz
- -125dB SFDR and -123dB THD at fIN = 10kHz
- High sampling rate SAR architecture enables fast settling and acquisition
- 1Msps throughput with no pipeline delay
- Integration simplifies design
- Integrated reference buffers
- ±VREF Unipolar differential analog input range
- Scalable ultra-low power supply reduces power consumption
- 6.7mW at 1Msps
- Scale as 6.7μW/ksps
- 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
Applications
- Test and measurement
- Automatic test equipment
- Medical instrumentation
- Process control and industrial automation
- Data acquisition systems
- Telecommunications
- Battery-powered equipment
Published: 2014-10-22
| Updated: 2023-04-13