SM6453AB Datasheet, PDF (12/12 Pages) Nippon Precision Circuits Inc – 3-wire Serial Data Volume Control for Headphone Amplifiers IC

SM6453AB
Auto-gain Control
The output level from the bass boost circuit can be controlled to prevent the output from exceeding a value
VREF1 [V] + 0.55 [Vpeak].
The output clip level margin is increased when bass boost is ON.
Mute Function (MUTEN)
Mute is ON when MUTEN = “L”. The mute setting is also controlled by microcontroller data. A pull-down
resistor can be added to prevent malfunction.
Power-down Function (PDN)
Power-down function is ON when PDN=“L”. A pull-down resistor can be added to prevent malfunction.
Beep Signal Input/Output (BEEPI, BEEPLO, BEEPRO)
The beep output circuit operates when MUTEN = “L”. The beep output is a fixed-current output on BEEPLO
and BEEPRO.
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome
Koto-ku, Tokyo 135-8430, Japan
Telephone: [phone]
Facsimile: [phone]
http://www.npc.co.jp/
Email: [e-mail]
NP0024AE 2001.02
NIPPON PRECISION CIRCUITS—12