This part is a kind of semiconductor called AD7944.

Function of this product has PulSAR 15.5 mW ADC.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP AD7944 FEATURES 14-bit resolution with no missing codes Throughput: 2.5 MSPS (TURBO high), 2.0 MSPS (TURBO low) Low power dissipation 15.5 mW at 2.5 MSPS, with external reference 28 mW at 2.5 MSPS, with internal reference INL: ±0.25 LSB typical, ±1.0 LSB maximum SNR 84 dB, with on-chip reference 84.5 dB, with external reference 4.096 V internal reference: typical drift of ±10 ppm/°C Pseudo differential analog input voltage range 0 V to VREF with VREF up to 5.0 V Allows use of any input range No pipeline delay Logic interface: 1.8 V/2.5 V/2.7 V Serial interface: SPI-/QSPI-/MICROWIRE-/DSP-compatible Ability to daisy-chain multiple ADCs with busy indicator 20-lead, 4 mm × 4 mm LFCSP (QFN) APPLICATION DIAGRAM 5V 2.5V 1.8V TO 2.7V 0V TO VREF [ ... ]

AD7944 PDF Datasheet Download