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BD3881FV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD3881FV
기능 Audio sound controller
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BD3881FV 데이터시트, 핀배열, 회로
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Structure :
Product :
Type :
Silicon Monolithic Integrated Circuit
Audio sound controller
BD3881FV
Feature :
1.Dual built-in recording and playing preamplifiers for cassette tapes
Less external components allows a compact size of the set.
2.The shock sound at power-ON/OFF is absorbed by both power sources.
The reference voltage of signal systems is designed to be a ground level so that
low offset voltage and low noise are achieved.
Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Limits
Power Supply Voltage
VDD
VEE
5
-5
Power Dissipation
Pd
850※
Operating Temperature
Topr
-20~+75
Storage Temperature
Tastg
-55~+125
※Over Ta=25C, derating at the rate of 8.5mW/C.
When installed on the standard board (Size: 70×70×1.6mm).
Operating Voltage Range
Symbol
Limit
VDD 3.5~4.75
VEE -4.75~-3.5
(It must function normally at Ta = 25℃)
Unit
V
V
Unit
V
mW
Application example
Note that ROHM cannot provide adequate confirmation of patents.
The product described in this specification is designed to be used with ordinary electronic equipment or devices (such as
audio-visual equipment, office-automation equipment, communications devices, electrical appliances, and electronic toys).
Should you intend to use this product with equipment or devices which require an extremely high level of reliability and the
malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace
machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales
representative in advance.
REV. C




BD3881FV pdf, 반도체, 판매, 대치품
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Pin number・Pin name
Pin number Pin name
1 PB1N
2 PB1P
3 PB2P
4 PB2N
5 PB2O
6 PB1O
Pin number
7
8
9
10
11
12
Pin name
VOLIN1
VOLIN2
GND
TRE1
TRE2
VDD
Pin number
13
14
15
16
17
18
Pin name
CONT
VEE
BAS2
OUT2
BAS1
OUT1
Pin number
19
20
21
22
23
24
Pin name
INA1
INA2
INB1
INB2
INC1
INC2
Pin number
25
26
27
28
Pin name
REC2O
REC2N
REC1N
REC1O
Cautions on use
1About operating voltage range and operating temperature range
Within the Operating Voltage Range and the Operating Temperature Range, while basic circuit
functional operations are supposed to be guaranteed, the standard values of the electrical
characteristics are guaranteed only when used under the specific conditions defined within these
ranges. Thus, the users must verify those conditions before setting constants, elements, voltages, and
temperatures. Note that the conditions of power dissipation are also affected with temperatures.
2About power on reset
A built-in circuit for performing initialization inside the IC at power-ON is provided. In the case of the
set design, however, to be on the safe side, it is recommended that data shall be sent to all the
addresses as initial data at power-ON and, until this sending operation is completed, the mute shall be
applied.
Function
Initial Condition
Input Selector
MUTE
REC Output
REC MUTE
Karaoke
Stereo
Volume
Treble Gain
-dB
0dB
Bass Gain
0dB
3About 1-wire serial control
As the CONT terminal is designed for inputting a high-frequency digital signal, the wiring and layout
patterns should be routed not to cause interference with the analog-signal-related lines.
4About power ON/OFF
Shock sound absorbing measures at power ON/OFF are implemented on 5pin, 6pin, 16pin, 18pin, 25pin,
and 28pin. When booting up power supplies, the VEE side should be booted a little bit earlier than the
other side. If the VDD side is booted up first, an excessive current may pass VDD through VEE. When
booting off the power supply, the VDD side should be booted off a little bit earlier than the other side.
Note that, at this time, voltage change passing through the GND level may produce an abnormally large
current.
5About function switching
On switching between the Volume, Bass, Treble, and REC Mute functions, the action has been taken to
absorb such switching shock sound. For the other function switching operations, a combined use of
MUTE is recommendable. As measures against the switching shock sound of Karaoke, the bias
resistances on 19pin through 24pin should be set to 10kor less.
REV. C

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부품번호상세설명 및 기능제조사
BD3881FV

Audio sound controller

Rohm
Rohm

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