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BD3812F-E2 Arkusz danych(PDF) 7 Page - Rohm

Numer części BD3812F-E2
Szczegółowy opis  2ch Electronic Volume
Download  10 Pages
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Producent  ROHM [Rohm]
Strona internetowa  http://www.rohm.com
Logo ROHM - Rohm

BD3812F-E2 Arkusz danych(HTML) 7 Page - Rohm

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Technical Note
7/9
www.rohm.com
2010.06 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
BD3812F
Notes for use
(1) Numbers and data in entries are representative design values and are not guaranteed values of the items.
(2) Although we are confident in recommending the sample application circuits, carefully check their characteristics further
when using them. When modifying externally attached component constants before use, determine them so that they
have sufficient margins by taking into account variations in externally attached components and the Rohm LSI, not only for
static characteristics but also including transient characteristics.
(3) Absolute maximum ratings
If applied voltage, operating temperature range, or other absolute maximum ratings are exceeded, the LSI may be
damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you think of a case in
which absolute maximum ratings are exceeded, enforce fuses or other physical safety measures and investigate how not
to apply the conditions under which absolute maximum ratings are exceeded to the LSI.
(4) VEE potential
Make the VEE pin voltage such that it is the lowest voltage even when operating below it. Actually confirm that the
voltage of each pin does not become a lower voltage than the VEE pin, including transient phenomena.
(5) Thermal design
Perform thermal design in which there are adequate margins by taking into account the allowable power dissipation in
actual states of use.
(6) Shorts between pins and misinstallation
When mounting the LSI on a board, pay adequate attention to orientation and placement discrepancies of the LSI. If it is
misinstalled and the power is turned on, the LSI may be damaged. It also may be damaged if it is shorted by a foreign
substance coming between pins of the LSI or between a pin and a power supply or a pin and a GND.
(7) Operation in strong magnetic fields
Adequately evaluate use in a strong magnetic field, since there is a possibility of malfunction.
(8) Serial control
For the CL and DA terminals, the patterned and other wirings should be routed not to cause interference with the
analog-signal-related lines.
(9) About power ON/OFF
(a) At power ON/OFF, a shock sound will be generated and, therefore, use MUTE on the set.
(b) When turning on power supplies, VEE and VCC should be powered on simultaneously or VEE first;
then followed by VCC. If the VCC side is started up first, an excessive current may pass VCC through VEE.
(10) Function switching
For the functions except master volume, use MUTE on the set.
(11) Reduction of switching noise when changing volume from -3dB to -4dB
In order to reduce switching noise when changing volume from -3dB to -4dB, after switching the switch of -4dB step,
change the switch of -1dB step by -1dB.


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