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BD88420GUL 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BD88420GUL은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 BD88420GUL 자료 제공

부품번호 BD88420GUL 기능
기능 Coupling Capacitorless Headphone Amplifiers
제조업체 ROHM Semiconductor
로고 ROHM Semiconductor 로고


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BD88420GUL 데이터시트, 핀배열, 회로
Headphone Amplifiers
Coupling Capacitorless
Headphone Amplifiers
BD88400GUL,BD88410GUL,BD88415GUL,BD88420GUL
No.11102EAT04
Description
BD88xxxGUL is output coupling capacitorless headphone amplifier. This IC has a negative voltage generator of regulated
type built-in and generates the direct regulated negative voltage from the supply voltage. It is possible to drive headphones
in a ground standard with both voltage of the positive voltage (+2.4V) and the negative voltage (-2.4V). Therefore a
large-capacity output coupling capacitor becomes needless and can reduce a cost, a board area, and the height of the part.
In addition, there is not the signal decrement by the low range to happen by output coupling capacitor and output load
impedance and can output a rich low tone.
Features
1) 2.4V to 5.5V Single-Supply Operation
2) No Bulky DC-Blocking Capacitors Required
3) No Degradation of Low-Frequency Response Due to Output Capacitors
4) Ground-Referenced Outputs
5) Gain setting
BD88400GUL: Variable gain with external resistors
BD88410GUL: -1.0V/V
BD88415GUL: -1.5V/V
BD88420GUL: -2.0V/V
6) Low THD+N
7) Low Supply Current
8) Integrated Negative Power Supply
9) Integrated Short-Circuit and Thermal-Overload Protection
10) Small package
VCSP50L2 (2.1mm x 2.1mm)
Applications
Mobile Phones, Smart Phones, PDAs, Portable Audio Players, PCs, TVs, Digital Cameras, Digital Video Cameras,
Electronic Dictionaries, Voice Recorders, Bluetooth Head-sets, etc
Line up
Type
BD88400GUL
BD88410GUL
BD88415GUL
Supply Supply
Voltage Current
[V] [mA]
Gain
[V/V]
Variable gain
with external
resister
Maximum
Output Power
[mW]
THD+N
[%]
Noise
Voltage
[µVrms]
PSRR
[dB]
2.45.5
2.0
(No signal)
-1.0
-1.5
80 0.006
(VDD=3.3V,RL=16(VDD=3.3V,RL=16
THD+N1%,f=1kHz) Po=10mW,f=1kHz)
10
-80
(f=217Hz)
Package
VCSP50L2
(2.1mm x 2.1mm)
BD88420GUL
-2.0
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/25
2011.03 – Rev. A




BD88420GUL pdf, 반도체, 판매, 대치품
BD88400GUL,BD88410GUL,BD88415GUL,BD88420GUL
Technical Note
Electrical characteristic curves – General Items (Reference data)
Unless otherwise specified, Ta=25, SGND=PGND=0V, SHDNLB=SHDNRB=SVDD, C1=C2=2.2µF,
Input coupling capacitor=1µF, RL=No Load * In BD88400GUL the input resister(Ri)=10kΩ, feedback resister(Rf)=10kΩ.
1u
100n
SHDNLB=0V
SHDNRB=0V
4.0
SHDNLB=VDD
SHDNRB=0V
3.0 * This caracteristics has
hysteresis (40mV typ) by
UVLO.
4.0
SHDNLB=VDD
SHDNRB=VDD
3.0 * This caracteristics has
hysteresis (40mV typ) by
UVLO.
10n 2.0 2.0
1n 1.0 1.0
0.1n
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Supply Voltage [V]
Fig.1 Standby Current vs.
Supply Voltage
0
SHDNLB=VDD
-0.5 SHDNRB=VDD
No Load
-1
-1.5
-2
-2.5
-3
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply Voltage [V]
Fig.4 Negative Voltage vs.
Supply Voltage
0
-10
VDD=2.4V
Ripple = 100mVp-p
-20 BPF
-30
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
100k
Frequency [Hz]
Fig.7 PSRR vs. Frequency
(VDD=2.4V)
0
-10 VDD=2.4V
-20
VOUT = 200mVp-p
RL=32Ω
-30 BPF
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
Frequency [Hz]
Fig.10 Crosstalk vs.
Frequency (VDD=2.4V)
100k
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
0.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Supply Voltage [V]
Fig.2 Monaural Operating
Current vs. Supply Voltage
200
180
SHDNLB=SHDNRB
=L->H
160 VSS 90% Setup time
140 No Load
120
100
80
60
40
20
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply Voltage [V]
Fig.5 Setup time vs.
Supply Voltage
0
-10
VDD=3.3V
Ripple = 100mVp-p
-20 BPF
-30
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
100k
Frequency [Hz]
Fig.8 PSRR vs. Frequency
(VDD=3.3V)
0
-10 VDD=3.3V
-20
VOUT = 200mVp-p
RL=32Ω
-30 BPF
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
Frequency [Hz]
Fig.11 Crosstalk vs.
Frequency (VDD=3.3V)
100k
4/25
0.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Supply Voltage [V]
Fig.3 Stereo Operating
Current vs. Supply voltage
120
100
RL=16Ω, in phase
RL=16Ω, out of phase
80
60
RL=32Ω, in phase
40 RL=32Ω, out of phase
THD+N-40dB
20 20kHz LPF
Stereo
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Supply Voltage [V]
Fig.6 Maximum power vs.
Supply Voltage
0
-10
VDD=5.5V
Ripple = 100mVp-p
-20 BPF
-30
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
100k
Frequency [Hz]
Fig.9 PSRR vs. Frequency
(VDD=5.5V)
0
-10 VDD=5.5V
-20
VOUT = 200mVp-p
RL=32Ω
-30 BPF
-40
-50
-60
-70
-80
-90
-100
10 100 1k
10k
Frequency [Hz]
Fig.12 Crosstalk vs.
Frequency (VDD=5.5V)
100k
2011.03 – Rev. A

4페이지










BD88420GUL 전자부품, 판매, 대치품
BD88400GUL,BD88410GUL,BD88415GUL,BD88420GUL
Electrical characteristic curves – BD88400GUL (Reference data)
0 VDD=3.3V
f=1kHz
-20 BPF
RL=32Ω
-40
RL=16Ω
-60
-80
-100
-120
-120 -100 -80 -60 -40 -20
0
Input Voltage [dBV]
Fig.34 Output Voltage vs.
Input Voltage (VDD=3.3V)
100
10
1 In phase
0.1 VDD=3.3V
20kHz-LPF
0.01 f=1kHz
Stereo
RL=32Ω
0.001
1n 100n
Out of phase
10u 1m
100m
Output Power [W]
Fig. 37 THD+N vs. Output
Power (VDD=3.3V, RL=32Ω)
0
VDD=3.3V
-20 Input connect
to the ground
-40 with 1uF
-60
-80
-100
-120
-140
10 100 1k 10k
Frequency [Hz]
Fig.40 Noise Spectrum
(VDD=3.3V)
100k
10
8 VDD=3.3V, Po=10mW
6
Ri=10kΩ, Input coupling
capacitor = 1.0uF
4
2 RL=16Ω
0
-2 RL=32Ω
-4
-6
-8
-10
10 100 1k 10k
100k
Frequency [Hz]
Fig.35 Gain vs. Frequency
(VDD=3.3V)
100
VDD=3.3V
10
RL=16
20kHz-LPF
Stereo (in phase)
1 Po=0.1mW
Po=1mW
0.1
0.01
0.001
Po=10mW
10 100 1k 10k 100k
Frequency [Hz]
Fig.38 THD+N vs. Frequency
(VDD=3.3V, RL=16Ω)
Technical Note
100
10
1 In phase
0.1 VDD=3.3V
20kHz-LPF
0.01 f=1kHz
Stereo
RL=16Ω
0.001
1n 100n
Out of phase
10u 1m
100m
Output Power [W]
Fig.36 THD+N vs. Output
Power (VDD=3.3V, RL=16Ω)
100
VDD=3.3V
10
RL=32
20kHz-LPF
Stereo (in phase)
1
Po=1mW
0.1
Po=0.1mW
0.01
0.001
Po=10mW
10 100 1k 10k 100k
Frequency [Hz]
Fig. 39 THD+N vs. Frequency
(VDD=3.3V, RL=32Ω)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
7/25
2011.03 – Rev. A

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부품번호상세설명 및 기능제조사
BD88420GUL

Coupling Capacitorless Headphone Amplifiers

ROHM Semiconductor
ROHM Semiconductor

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