AIS339 Overview
48-QFN is how it's packaged.It is designed with 18 Bits.This electrical device supplies/analog voltage 2.7V ~ 3.6V, which converts alternative voltage (AC voltage) to regulated direct voltage (DC voltage), providing regulated DC power to drive devices.Its supply voltage is 2.7V ~ 3.6V.48-TQFN (5x5) is its device package supplier.
AIS339 Features

AIS339 Applications
There are a lot of Storm Interface
AIS339 AFE applications.

CMOS Image sensors for mobile applications
Medical Instrumentation and medical imaging
Music recording
Digital signal processing
Scientific instruments
Rotary encoder
Displaying
Transducer
Microcontrollers.
Digital Storage Oscilloscope

Mounting Type	Surface Mount
Package / Case	48-QFN
Supplier Device Package	48-TQFN (5x5)
Package	Tape & Reel (TR)
Mfr	AIStorm, Inc
Product Status	Active
Series	-
Number of Channels	5
Number of Bits	18
Voltage - Supply, Analog	2.7V ~ 3.6V
Voltage - Supply, Digital	2.7V ~ 3.6V