ROHM BD3881FV

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Structure :
Silicon Monolithic Integrated Circuit
Product :
Audio sound controller
Type :
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
VDD
5
Power Supply Voltage
VEE
-5
Pd
850※
Power Dissipation
Operating Temperature
Topr
－20～＋75
Storage Temperature
Tastg
－55～＋125
※Over Ta＝25C, derating at the rate of 8.5mW/C.
When installed on the standard board (Size: 70×70×1.6mm).
Unit
V
mW
℃
℃
Operating Voltage Range
Unit
Symbol
Limit
VDD
3.5～4.75
V
VEE
-4.75～-3.5
V
(It must function normally at Ta = 25℃)
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
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Electrical characteristics
GENERAL
(Ta = 25C, VDD = 4.5V, VEE = -4.5V, f = 1kHz, Vin = 50mVrms, Rg = 600,
RL = 10kΩ, Input Selector = Ach, Volume=0dB, Bass=0dB, Treble=0dB, unless otherwise noted.)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
VDD Circuit Current
IQVDD
-
3.0
8.0
VEE Circuit Current
IQVEE
-8.0
-3.0
-
0.6
0.8
-
Vrms
THD(Vout) =1%, BPF = 400～30kHz
Volume = -24dB
Vaim
Bch Maximum Input Voltage
Vbim
Cch Maximum Input Voltage
Vcim
Maximum Input Voltage TP
Vimtp
0.6
0.8
-
Vrms
THD(Vout)=1%, BPF = 400～30kHz
GAIN = 10dB
Input Selector = TP
Maximum Output Voltage
Vom
2.2
2.5
-
Vrms
THD = 1%, BPF = 400～30kHz
Voltage Gain
Gv
26
28
30
dB
Gv = 20log(Vout/Vin)
Channel Balance
CB
-1.5
0
1.5
dB
CB = Gv1-Gv2
Total Harmonic Distortion Ratio
THD
-
0.02
0.1
％
Output Noise Voltage ＊
Vno
-
12
20
μVrms
Residual Noise Voltage ＊
Vmno
-
12
20
μVrms
CT
70
85
-
dB
8
10
12
dB
－
-110
-70
dB
Voltage Gain A
Gva
Voltage Gain B
Gvb
RECODING
EQ
INPUT
Voltage Gain C
PLAY BACK
EQ
Vin = 0Vrms
Ach Maximum Input Voltage
Cross-talk between Channels *
VOLUME
mA
CTab1
Cross-talk between Selectors A2ch→B2ch *
CTab2
Cross-talk between Selectors B1ch→C1ch *
CTbc1
Cross-talk between Selectors B2ch→C2ch *
CTbc2
Cross-talk between Selectors C1ch→A1ch *
CTca1
Cross-talk between Selectors C2ch→A2ch *
CTca2
Output Impedance
Rsout
－
－
50
Ω
Voltage Gain RC
Gvrc
38
40
42
dB
Maximum Output Voltage RC
Vomrc
2.2
2.5
-
Vrms
Input Conversion Noise Voltage RC
Vnorc
-
1.5
3.0
μVrms
Vtr
2
4
-
V/μS
Gvtp
44
46
48
dB
Maximum Output Voltage TP
Vomtp
2.2
2.5
-
Vrms
Input Conversion Noise Voltage TP
Vnotp
-
1.1
2.0
μVrms
Volume Maximum Input Voltage
Vimv
2.2
2.5
―
Vrms
Volume Input Impedance
Rvin
Voltage Gain TP
CT = 20log(Vin/Vout)
BPF = IHF-A, Rg = 0Ω
Gvc
Cross-talk between Selectors A1ch→B1ch *
Slew Rate RC
BPF = 400-30KHz
Volume = 0dB～-84dB
BPF = IHF-A, Rg=0Ω
Input Point = Pin7, Pin8
Volume = 0dB～-84dB
BPF = IHF-A, Rg=0Ω
Input Point = Pin7, Pin8
Rg = 0Ω, BPF = IHF-A
Vin=500mVrms
f=10kHz
THD=1%, BPF=400～30kHz
Rg = 0Ω, BPF = IHF-A
f=10kHz
Input Selector = TP
THD=1%, BPF=400～30kHz
Input Selector = TP
Rg=2.2kΩ, BPF=IHF-A, Gv=20dB
THD(Vout)=1%, BPF=400～30kHz
Volume ATT=-24dB
14
20
26
kΩ
Control Range
Control Step 1
Control Step 2
Setting Error 1
Setting Error 2
Vr
-87
-84
-81
dB
BPF = IHF-A
Sv1
Sv2
Ev1
Ev2
-2
-3
2
4
0
0
2
3
dB
dB
dB
dB
Volume Maximum Attenuation *
ATTm
－
-118
-90
dB
0dB to –36dB
-36dB to –84dB
0dB to –72dB
-76dB to –84dB
Volume=-∞, BPF=IHF-A, Vin=3Vrms,
ATT=20log(Vout/Vin)-18dB
Volume
Volume
Volume
Volume
Volume
REV. C
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Parameter
Symbol
TREBLE
BASS
Bass Boost Control Range
Gbbr
Min.
Limit
Typ.
Max.
+18
+21
+24
Unit
Conditions
f = 70Hz, Vin = 5mVrms
BASS = +21dB
dB
Bass Control Step
SBC
-
3
-
dB
Bass Setting Error (0dB～12dB)
EBS1
-2
0
2
dB
Bass Setting Error (15dB～21dB)
EBS2
-3
0
3
dB
Treble Boost Control Range
Gｔbr
+12
+14
+16
dB
Treble Control Step
STC
-
2
-
dB
Treble Setting Error
ETS
-2
0
2
dB
f = 70Hz,
Vin = 5mVrms
f = 10kHz, Vin = 5mVrms
TREBLE = +14dB (fc=300Hz)
f = 10kHz
Vin = 5mVrms
※ The operational amplifier for PB should be used with the gain of 10dB or above.
※ For measurement, VP-9690A (Average value wave detection, Effective value display) IHF-A filter by Matsushita
Communication Industrial is used.
※ Phase relation between Input/Output signal terminals is Equiphase.
※ Not designed for radiation resistance.
Outline dimension・Marking dimension
BD3881FV
Lot. No.
SSOP-B28 (Unit：mm)
Block Diagram
28
27
26
25
24
23
REC1O REC1N REC2N REC2O INC2
22
INC1
21
INB2
20
INB1
19
INA2
18
INA1
17
OUT1
BAS1
16
15
OUT2 BAS2
BASS
BASS
20k
18dB
9.3k
TREBLE
VOLUME
Logic Control
18dB
20k
TREBLE
VOLUME
9.3k
PB１N
1
PB1P
2
PB2P
3
PB2N
4
PB2O
5
VOLIN1 VOLIN2 GND
PB1O
6
7
8
9
REV. C
TRE1
10
TRE2
11
VDD
12
CONT
13
VEE
14
Unit: Resistance = Ω
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Pin number・Pin name
Pin number
Pin name
Pin number
Pin name
Pin number
Pin name
Pin number
Pin name
Pin number
Pin name
1
2
3
4
5
6
PB1N
PB1P
PB2P
PB2N
PB2O
PB1O
7
8
9
10
11
12
VOLIN1
VOLIN2
GND
TRE1
TRE2
VDD
13
14
15
16
17
18
CONT
VEE
BAS2
OUT2
BAS1
OUT1
19
20
21
22
23
24
INA1
INA2
INB1
INB2
INC1
INC2
25
26
27
28
REC2O
REC2N
REC1N
REC1O
Cautions on use
1．About 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.
2．About 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
REC Output
Karaoke
Volume
Treble Gain
Bass Gain
MUTE
REC MUTE
Stereo
-dB
0dB
0dB
3．About 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.
4．About 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.
5．About 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 10k or less.
REV. C
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
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R1120A