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부품번호 | BM28720MUV 기능 |
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기능 | 20W+20W Full Digital Speaker Amplifier | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 30 페이지수
Datasheet
Middle Power Class-D Speaker Amplifier series
20W+20W
Full Digital Speaker Amplifier
with built-in DSP
BM28720MUV
General Description
BM28720MUV is a Full Digital Speaker Amplifier with
built-in DSP (Digital Sound Processor) designed for
Flat-panel TVs in particular for space-saving and
low-power consumption, delivers an output power of
20W+20W. This IC employs Bipolar, CMOS, and
DMOS (BCD) process technology that eliminates
turn-on resistance in the output power stage and
internal loss due to line resistances up to an ultimate
level. With this technology, the IC can achieve high
efficiency. In addition, the IC is packaged in a compact
reverse heat radiation type power package to achieve
low power consumption and low heat generation and
eliminates necessity of external heat-sink up to a total
output power of 40W. This product satisfies both needs
for drastic downsizing, low-profile structures and many
function, high quality playback of sound system.
Key Specifications
■ Supply voltage (VCC)
■ Speaker output power
(VCC=18.5V, RL=8Ω)
■ THD+N
10V to 24V
20W+20W (Typ.)
0.07 [%] (Typ.)
Applications
■ Flat Panel TVs (LCD, OEL)
■ Home Audio
■ Desktop PC
■ Amusement equipments
■ Electronic Music equipments, etc.
Package
VQFN032V5050
W(Typ) x D(Typ) x H(Max)
5.00mm x 5.00mm x 1.00mm
Features
■ This IC includes the DSP (digital sound processor)
for Audio signal processing for Flat TVs.
12 Band/ch BQ, 3 Band DRC, Pre-Scaler,
Channel Mixer, Fine Master Volume,
Hard Clipper, Level Meter etc.
■ This IC has one input systems of digital audio
interface. (No needs of Master Clock)
- I2S / LJ / RJ format
- LRCLK: 32k/44.1k/48KHz
- BCLK: 32fs / 48fs / 64fs
- SDATA: 16 / 20 / 24bit
■ This IC has one output systems of digital audio
interface.
- I2S format
- SDATA: 16 / 20 / 24bit
■ With wide range of power supply voltage.
■ The monaural output that can reduce the number of
external parts can be used.
■ With high efficiency and low heat dissipation
contributing to miniaturization, slim design, and also
power saving of the system.
■ Eliminates pop-noise generated during the power
supply on/off. High quality muting performance is
realized by using the soft-muting technology.
■ This IC is built-in with various protection functions
for highly reliability design.
- High temperature protection
- Under voltage protection
- Output short protection
- DC voltage protection
- Clock stop protection
■ Small package
Typical Application Circuit
SP ch1
(Lch)
SP ch2
(Rch)
VQFN032V5050
MCU
Digital
Audio
Source
Figure 1. Typical application circuits
○Product structure:Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has not designed protection against radioactive rays
1/75
TSZ02201-0C1C0E900060-1-2
10.Jun.2016 Rev.003
BM28720MUV
Electrical Characteristics
(Unless otherwise specified Ta=25℃, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1kHz, RL=8Ω,
DSP : Through, fs=48kHz, Snubber circuit for output terminal : Rsnb=5.6Ω, Csnb=680pF)
Item
Total circuit
Circuit current 1
(Normal mode)
Circuit current 2
(Reset mode)
Open-drain terminal
Low level voltage
Regulator output voltage 1
Regulator output voltage 2
High level input voltage
Low level input voltage
Input current
(Input pull-up terminal)
Input current
(Input pull-down terminal)
Input current
(SCL, SDA terminal)
Input current
(SCL, SDA terminal)
Speaker amplifier output
Maximum output power 1
Limit
Symbol
Unit
Min Typ Max
Conditions
ICC1 - 45 90 mA Pin 17, 24, No load
IDD1 - 9 19 mA Pin 10, -infinity dBFS input, No load
ICC2 - 10 40 μA Pin 17, 24, No load
RSTX=0V, MUTEX=0V
Pin 10, -infinity dBFS input, No load
IDD2 - 2.5 7.0 mA
RSTX=0V, MUTEX=0V
VERR
VREG_G
VREG15
VIH
VIL
IUP
-
4.9
1.3
2.5
0
-150
-
5.7
1.5
-
-
-100
0.8
6.5
1.7
3.3
0.8
-50
V Pin 13, IO=0.5mA
V Pin 27
V Pin 7
V Pin 1 - 5, 9, 11, 29 -32
V Pin 1 - 5, 9, 11, 29 -32
μA Pin 2 – 4 VIN = 0V
IDN 35 70 105 μA Pin 1, 29, 30, VIN = 3.3V
IIL -1 0 - μA Pin 31, 32, VIN = 0V
IIH - 0 1 μA Pin 31, 32, VIN = 3.3V
VCC=13V,THD+N=10%
PO1
- 10 - W (Note 7)
Maximum output power 2
VCC=18.5V,THD+N=10%
PO2
- 20 - W (Note 7)
Total harmonic distortion 1
THD1
- 0.07 -
%
PO=1W, AES17
(Note 7)
Crosstalk 1
CT1 60 80
-
dB
VCC=13V, PO=1W, A-weighted
(Note 7)
Output noise voltage 1
VNO1
-
80
-
μVrms
-infinity dBFS input, A-weighted
(Note 7)
fPWM1
- 256 - kHz fs=32 kHz
PWM sampling frequency
fPWM2
- 352.8 -
kHz fs=44.1 kHz
fPWM3
- 384 - kHz fs=48 kHz
(Note 7) These items show the typical performance of device and depend on board layout, parts, and power supply.
The standard value is in mounting device and parts on surface of ROHM’s board directly.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
4/75
TSZ02201-0C1C0E900060-1-2
10.Jun.2016 Rev.003
4페이지 BM28720MUV
Typical Performance Curves
Speaker output(Ta=25℃, VCC=18V, DVDD=3.3V, RSTX=3.3V, MUTEX=3.3V, f=1kHz,
DSP : Through, fs=48kHz, Snubber circuit for output terminal : Rsnb=5.6Ω, Csnb=680pF)
Measured by ROHM designed 4 layer board.
45
RL=6Ω
40
35
30
THD+N=10%
25
THD+N=1%
20
15
10
5
0
6 8 10 12 14 16 18 20 22 24 26 28 30
VCC [V]
Figure 12.
Output voltage - Power voltage (RL=6Ω)
3.5
RL=6Ω
3
VCC=18V
2.5
2
1.5
1
0.5
0
0 10 20 30 40
Output Pow er [W/CH]
Figure 13.
Output power - Current consumption (RL=6Ω)
45
RL=4Ω
40
35
30
25
THD+N=10%
20
THD+N=1%
15
10
5
0
6 8 10 12 14 16 18 20 22 24 26 28 30
VCC [V]
Figure 14.
Output Voltage – Power Voltage (RL=4Ω)
3.5
RL=4Ω
3
VCC=18V
2.5
2
1.5
1
0.5
0
0 10 20 30 40
Output Pow er [W/CH]
Figure 15.
Output power - Current consumption (RL=4Ω)
※Dotted line means internal dissipation is over package power.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
7/75
TSZ02201-0C1C0E900060-1-2
10.Jun.2016 Rev.003
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부품번호 | 상세설명 및 기능 | 제조사 |
BM28720MUV | 20W+20W Full Digital Speaker Amplifier | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |