BU7831KN-E2 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 20-VFQFN case. This device has 6 channels. For your reference, here are some Fully Integrated Processor functions. It can be used in Consumer Audio. There is a supply of votage within 2.5V~3.3V. -30°C~85°C TA is the temperature range for this device. A chip has 20 terminations. You can find similar parts by searching for the BU7831 family. Chips have 20 pins that can be accessed. It is possible to sort parts based on their consumer IC type using CONSUMER CIRCUIT. It should not be possible to power this part with a voltage lower than 2.5V (Vsup). Voltage can be generated at 3V volts with this device. A maximum supply voltage (Vsup) is reached at 3.3V. In this case, Surface Mount mounts it. 3.7mA controls the supply current.
BU7831KN-E2 Features
With 20-VFQFN channels
operate temperature at the range of -30°C~85°C TA
consumer IC type: CONSUMER CIRCUIT

BU7831KN-E2 Applications
There are a lot of ROHM Semiconductor
BU7831KN-E2 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

Factory Lead Time	8 Weeks
Contact Plating	Copper, Tin
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	20-VFQFN
Number of Pins	20
Operating Temperature	-30°C~85°C TA
Packaging	Tape & Reel (TR)
Published	2005
Pbfree Code	yes
Part Status	Not For New Designs
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	20
Applications	Consumer Audio
HTS Code	8542.39.00.01
Voltage - Supply	2.5V~3.3V
Terminal Position	QUAD
Terminal Pitch	0.5mm
Base Part Number	BU7831
Function	Fully Integrated Processor
Supply Voltage-Max (Vsup)	3.3V
Power Supplies	3V
Supply Voltage-Min (Vsup)	2.5V
Number of Channels	6
Interface	Serial
Supply Current-Max	3.7mA
Consumer IC Type	CONSUMER CIRCUIT
Length	4.2mm
Height Seated (Max)	1mm
Width	4.2mm
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Mfr	Rohm Semiconductor
Series	-
Product Status	Obsolete
Voltage - Supply	2.5V ~ 3.3V
Operating Temperature	-30°C ~ 85°C (TA)
Specifications	-
Supplier Device Package	20-VQFN (4.2x4.2)