전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

BA3842 데이터시트(PDF) 10 Page - Rohm

부품명 BA3842
상세설명  Preset equalizer sound control (P.S.C) IC
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  ROHM [Rohm]
홈페이지  http://www.rohm.com
Logo ROHM - Rohm

BA3842 데이터시트(HTML) 10 Page - Rohm

Back Button BA3842 Datasheet HTML 5Page - Rohm BA3842 Datasheet HTML 6Page - Rohm BA3842 Datasheet HTML 7Page - Rohm BA3842 Datasheet HTML 8Page - Rohm BA3842 Datasheet HTML 9Page - Rohm BA3842 Datasheet HTML 10Page - Rohm BA3842 Datasheet HTML 11Page - Rohm BA3842 Datasheet HTML 12Page - Rohm BA3842 Datasheet HTML 13Page - Rohm  
Zoom Inzoom in Zoom Outzoom out
 10 / 13 page
background image
L : 0V
H : VCC
572
Audio ICs
BA3842F
FCircuit operation
(1)
Operating power supply voltage range
Within the operating power supply voltage range, circuit
functioning is guaranteed as long as the operating tem-
perature range is not exceeded. However, verify carefully
that the voltage, temperature, and component values are
appropriate.
(2)
Control pins and control voltage settings
(1) The DC control range is 0 V to VCC for the preset
equalizer and the dynamic bass boost control pins (pins
18 and 19). Make sure that the voltage applied to these
control pins does not exceed VCC.
(2) Mode switch threshold values are determined by di-
viding resistors between VCC and GND of both the preset
equalizer and bass boost. If the control voltages are di-
vided from the supply voltage of the IC, they will have
greater tolerance with respect to VCC fluctuations.
(3) During mode switching, an abrupt change in the level
of the DC output may occur, causing a sound. In this
case, add the capacitor and resistor indicated in the ap-
plication, or only the capacitor as needed.
4) Here is an example of determining the control pin
voltage setting with the input of three values.
Connect OUT to the control pin.
Regarding the values of the various constants, it is impor-
tant to consider current dissipation and other such prob-
lems. If such a problem should occur, change the
constants and redesign the diode logic.
OUT
C
B
A
0 V
L
L
L
1.3 V
L
L
H
3 V
L
H
L
5 V
L
H
H
7 V
H
L
L
9 V
H
L
H
(3)
Input coupling capacitors
Note that the polarity of the input coupling capacitors will
change depending on the DC voltage to which they are
connected. Set capacitors based on the frequency band
to be used, taking into consideration the fact that the in-
put impedance is 50k
Ω.
(4)
Load resistances
If the values of the load resistors are too small, the output
gain and total harmonic distortion may fluctuate slightly.
Take this into consideration when connecting the subse-
quent stage.
(5)
The dynamic bass boost filter is a multi feedback
active filter which forms the B.P.F.
FO can be changed with the C value.
fO = 1 / [2
π {(R1 //R2) R3 C1 C2}1/2]
Q = 1 / 2
{(R3 /(R1 //R2)}1/2
HO = R3 /{R1
(1
)C1 /C2)1/2}
When R1 = 2.4k
Ω, R2 = 4.3kΩ, R3 = 91kΩ, and C1 = C2 =
0.22
µF,
fO
61Hz
Q
3.8
HO
19
If R1 and R2 are too small, the bass boost characteristics
such as boost gain and crosstalk may change. Keep this
in mind when setting filter values. Furthermore, design
the application so that the bass boost level increments by
5dB from 5 to 20dB when HO = 19.


유사한 부품 번호 - BA3842

제조업체부품명데이터시트상세설명
logo
Rohm
BA3840KV ROHM-BA3840KV Datasheet
146Kb / 8P
   Preset graphic equalizer for headphone stereos
More results

유사한 설명 - BA3842

제조업체부품명데이터시트상세설명
logo
Toshiba Semiconductor
TA2078P TOSHIBA-TA2078P Datasheet
197Kb / 6P
   PRESET EQUALIZER IC
logo
Princeton Technology Co...
PT2381 PTC-PT2381 Datasheet
338Kb / 3P
   4-Mode Preset Equalizer IC?
logo
Silan Microelectronics ...
SC5388 SILAN-SC5388 Datasheet
155Kb / 9P
   5-MODE PRESET EQUALIZER IC
logo
Princeton Technology Co...
PT2388 PTC-PT2388 Datasheet
112Kb / 4P
   5-Mode Preset Equalizer IC???
PT2388 PTC-PT2388_10 Datasheet
308Kb / 9P
   5-Mode Preset Equalizer IC
PT2380 PTC-PT2380 Datasheet
272Kb / 11P
   4 Mode Preset Equalizer IC
PT2381 PTC-PT2381_10 Datasheet
292Kb / 13P
   4-Mode Preset Equalizer IC
logo
Rohm
BH3852S ROHM-BH3852S Datasheet
198Kb / 11P
   Sound control IC
logo
Silan Microelectronics ...
SA2078 SILAN-SA2078 Datasheet
96Kb / 4P
   PRESET EQUALIZER CIRCUIT
logo
Rohm
BH3854AS ROHM-BH3854AS Datasheet
306Kb / 15P
   Serial sound control IC
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com