ADS8904BRGER

具有内部基准电压缓冲器、内部 LDO 和增强型 SPI 接口的 20 位、250kSPS、单通道 SAR ADC 24-VQFN -40 to 125

The ADS8900B, ADS8902B, and ADS8904B ADS890xB belong to a family of pin-to-pin compatible, high-speed, high-precision successive-approximation-register SAR analog-to-digital convertors ADCs with an integrated reference buffer and integrated low-dropout regulator LDO. These devices support unipolar, fully differential, analog input signals with ±1-ppm INL and 104.5-dB SNR specifications under typical operating conditions.

The integrated LDO enables single-supply operation with low power consumption. The integrated reference buffer supports burst-mode data acquisition with 20-bit precision for the first sample. External reference voltages in the range 2.5 V to 5 V are supported, offering a wide selection of input ranges without additional input scaling.

The integrated multiSPI digital interface is backward-compatible to the traditional SPI protocol. Additionally, configurable features simplify board layout, timing, and firmware, and support high throughput at lower clock speeds. The multiSPI digital interface allows for easy interface with a variety of microcontrollers, digital signal processors DSPs, and field-programmable gate arrays FPGAs.

The ADS890xB family is offered in a space-saving, 4-mm × 4-mm, VQFN package, and is specified over the extended temperature range of –40°C to +125°C.