PGA4311UA/1KG4 Overview
There is also an accompanying case included with this set. There is a recommendation that it should be mounted with a Surface Mount type mount. The file is embedded in a 28-SOIC (0.295, 7.50mm Width) case. This device has 4 channels. For your reference, here are some Volume Control functions. It can be used in Automotive Audio, Musical Instruments, Professional Audio. There is a supply of votage within ±4.75V~5.25V. -40°C~85°C TA is the temperature range for this device. A chip has 28 terminations. You can find similar parts by searching for the PGA4311 family. Refer to the following specifications for the device: 31.5dB ~ -95.5dB. Chips have 28 pins that can be accessed. Voltage can be generated at +-5V volts with this device. A maximum supply voltage (Vsup) is reached at 5.25V. In this case, Surface Mount mounts it.
PGA4311UA/1KG4 Features
With 28-SOIC (0.295, 7.50mm Width) channels
operate temperature at the range of -40°C~85°C TA

PGA4311UA/1KG4 Applications
There are a lot of Texas Instruments
PGA4311UA/1KG4 Audio Special Purpose applications.

AV/DVD Receiver, AV Amplifier
Car or Mobile Audio System
Digital Television
Musical Instruments
Recording Systems
High-End Audio/Sound Card for PC
Replacement of DIR1703
Other Applications Requiring S/PDIF Receiver
Audio Differential Line Drivers
Audio Mix Consoles

Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295, 7.50mm Width)
Number of Pins	28
Weight	730.794007mg
Operating Temperature	-40°C~85°C TA
Packaging	Tape & Reel (TR)
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	2 (1 Year)
Number of Terminations	28
ECCN Code	EAR99
Applications	Automotive Audio, Musical Instruments, Professional Audio
Voltage - Supply	±4.75V~5.25V
Terminal Position	DUAL
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Base Part Number	PGA4311
Function	Volume Control
Supply Voltage-Max (Vsup)	5.25V
Power Supplies	+-5V
Number of Channels	4
Interface	SPI
Specifications	31.5dB ~ -95.5dB
Length	17.905mm
Height Seated (Max)	2.65mm
Width	7.5mm
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free