AS3412 datasheet(46/84 Pages) AMSCO

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Page 46

ams Datasheet

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[v1-00] 2016-Apr-06

AS3412 − Detailed Description

Figure 59:

Production Trim Box

Production Trim Box: This block diagram shows the connection of the Trim Box enabling the audio inputs to

become a trim input for mass production.

With this new system, there is no need for mechanical

potentiometers any more. Up to now, operators in production

use screw drivers to fine tune the ANC performance of each

headset. The disadvantage of this is reliability and cost of

potentiometers. Additionally, operators are not always precise

in their work, thus yielding inconsistent results. With the new

production trimming system from ams there are no mechanical

potentiometers required. The operator connects a 3.5mm audio

jack to a trimming box and this box enables the audio input of

the headset to become the ANC tuning input. This new feature

also helps industrial designers of headset because there are no

more considerations concerning leakage holes for the old

mechanical trimming. Thus, the headset can be fully assembled

and ready for the ANC test system at the end of the

manufacturing process. The trim box can be easily controlled

with an RS232 interface so it is also possible to create fully

automated trimming systems. For further details please contact

our local sales office; they can provide you with source code

examples and application notes.

LINR

TRSCL/BPR

MUTE

TRSDA/BPL

3 x

PROM

to HPH

Application Trim Box

AS3412

LINL

AS3412 Datasheet(PDF) 46 Page - ams AG