Engineers can achieve the industry's highest resolution and fastest sampling rate at the lowest power with the MAX11905, a 20-bit, 1.6Msps successive approximation register (SAR) analog-to-digital converter (ADC) from Maxim Integrated Products, Inc.
Typically, when engineers require high-precision data conversion, they turn to a delta-sigma ADC. However, to produce high precision and wide dynamic range, those ADCs must consume at least 100mW of power. In contrast, the MAX11905 SAR ADC consumes only 9mW—a 91% power savings.
With this power savings comes very high (20-bit) precision and the fastest sampling (1.6Msps) rate available. The MAX11905 also integrates internal reference buffers, which reduces cost and time to market, and saves up to 50% space compared to competitive discrete solutions. With this versatility, the MAX11905 is ideal for a wide range of applications, including process control, automatic test equipment, medical instrumentation, and battery-powered devices.
Features:
－ 20-Bit Resolution with No Missing Codes
－ 1.6Msps Throughput with No Pipeline Delay
－ 9mW at 1.6Msps, Ultra-Low Power Consumption
－ ±6 LSB INL, ~5ppm Over Temperature
－ ±1 LSB DNL Maximum at 20 Bit
－ 98.3dB SNR at fIN = 10kHz
－ 98.1dB 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?-/MICROWIRER-/DSP-Compatible
－ -40°C to +85°C Operation
－ 20-Pin, 4mm × 4mm, TQFN Package
