MIX2007 [MAXIM]
3W Mono Class-D Audio Power Amplifier; 3W单声道D类音频功率放大器
| 型号： | MIX2007 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 3W Mono Class-D Audio Power Amplifier |
| 文件： | 总8页 (文件大小：375K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIX2007
3W Mono Class-D Audio Power Amplifier
Description
Features
Output Power：
The MIX2007 is a high efficiency，filter-less 3W
Mono class-D audio power amplifier. The high
power output stage suitable for portable devices.
－3W (VDD=5.0V, RL =4Ω，THD+N=10%)
Supply Voltage : 2.5V to 5.5V
Low Noise and Low distortion
Low Pop noise
The filter-less architecture and the few external
components for operation save the board space
and cost.
Shutdown current less than 1uA
Over temperature protection
Application
The MIX2007 features shutdown and mute control
functions. The Over temperature protection
function and Low POP noise make system design
more flexibility.
Bluetooth devices
Mini-Speaker USB Speaker
2.0 / 2.1 Speaker
The MIX2007 is available in SOP8 package .
Typical Application
Pin Configuration
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
1 / 8
MIX2007
3W Mono Class-D Audio Power Amplifier
Block Diagram
Pin Descriptions
Pin
1
Symbol
SD
I/O Descriptions
Shutdown Control Pin (low for active)
I
No connection
2
NC
Analog reference bypass capacitor
Negative Audio Input
Audio Negative Output
VDD
3
BYPASS
-IN
I/O
I
4
5
OUTN
VDD
O
6
GND
7
GND
OUTP
Audio Positive Output
8
O
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
2 / 8
MIX2007
3W Mono Class-D Audio Power Amplifier
Ordering Information
Order Number
Package
Marking
MIX2007
XXXXXXX
Packing
2500pcs/reel
100pcs/tube
MIX2007
SOP8
Absolute Maximum Ratings
VDD
VI
Supply voltage
Input voltage
-0.3V to 6V
-0.3V to VDD+0.3V
-40°C to 85°C
-40°C to 125°C
-65°C to 150°C
300°C, 5sec
TA
Operation free-air temperate range
Operation free-air junction temperature
Storage temperature range
TJ
TSTG
TSLD
Soldering temperature
Recommended Operating Conditions
MIN
MAX
UNIT
V
VDD
VIH
VIL
Supply Voltage
SD Input High Level
SD Input Low Level
VDD
2.5
2
5.5
VDD=5.0V
VDD=5.0V
V
0.6
V
Thermal Information
Parameter
Symbol
Package
MAX
UNIT
Thermal Resistance(Junction to Ambient)
θJA
SOP8
115
°C/W
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
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MIX2007
3W Mono Class-D Audio Power Amplifier
Electrical Characteristics
(VDD =5V, Gain=20dB, RL =8Ω, T =25°C, unless otherwise noted.)
Symbol
Parameter
Test Conditions
MIN TYP MAX UNIT
VIN
Supply Power
2.5
-
5.5
V
VDD=5.0V
VDD=3.6V
VDD=5.0V
VDD=3.6V
VDD=5.0V
VDD=3.6V
VDD=5.0V
VDD=3.6V
3
THD+N=10%,f=1KHZ,RL=4Ω
THD+N=1%,f=1KHZ,RL=4Ω
THD+N=10%,f=1KHZ,RL=8Ω
THD+N=1%,f=1KHZ,RL=8Ω
W
1.55
2.5
W
W
W
%
1.28
1.72
0.9
PO
Output Power
1.4
0.75
0.02
0.02
0.013
0.013
20
VDD=5.0V, PO=1W, RL=4Ω
VDD=3.6V, PO=0.5W, RL=4Ω
VDD=5.0V, PO=0.5W, RL=8Ω
VDD=3.6V, PO=0.25W, RL=8Ω
f=1KHz
Total Harmonic Distortion
Plus Noise
THD+N
f=1KHz
Ri=30K
f=1KHz
%
GV
Gain
dB
dB
Power-supply ripple
rejection
PSRR
VDD=4.2V ±200mVp-p
65
VDD=5.0V,Vo rms=1V,
GV=20dB
SNR
Signal-to-Noise Ratio
f=1KHz
-85
dB
A-weighting
NoA-weighting
f=1KHz
60
80
-92
90
85
4
VDD=5.0V,Input floating with
Vn
Dyn
η
Output Noise
Dynamic range
Efficiency
μV
dB
%
CIN=0.1μF
VDD=5.0V,THD=1%
RL=8Ω, Po=1.5W
RL=4Ω, Po=2.5W
VDD=5.0V
f=1KHz
IQ
Quiescent Current
No Load
mA
VDD=3.0V
2.7
ISD
Shutdown Current
Offset Voltage
Oscillator frequency
Startup time
－
VDD=2.5V to 4.2V
VIN=0V, VDD=5V
VSD=3.3V
1
μA
mV
khz
mS
Vos
Fosc
Tst
10
650
15
Bypass capacitor =10nF
OTP
OTH
180
40
No Load, Junction
Temperature
VDD=5.0V
°C
－
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
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MIX2007
3W Mono Class-D Audio Power Amplifier
Typical Operating Characteristics
(VDD =5V, Gain=20dB, RL =8Ω, T =25°C, unless otherwise noted.)
THD+N vs Output Power
THD+N vs Output Power
20
10
20
10
RL=8ohm Gain=20dB
VDD= 3.6V , 4.2V , 5V
RL=4ohm Gain=20dB
VDD= 3.6V , 4.2V , 5V
5
5
2
1
2
1
0.5
0.5
%
%
0.2
0.1
0.2
0.1
0.05
0.05
0.02
0.01
0.02
0.01
1m 2m 5m 10m
100m
500m 1
2
4
1m 2m 5m 10m 20m
100m
500m 1
2
W
W
THD+N VS FREQUENCY
Frequency Response
+22
+20
+18
0.5
RL=8ohm Gain=20dB
Vo=1Vp-p
0.2
0.1
d
B
g
0.05
%
+16
+14
A
0.02
0.01
RL=8ohm Gain=20dB
Cin=0.1uF Rin=30K
+12
0.005
20
50 100 200 500 1k 2k
Hz
5k
20k
20
50 100 200 500 1k 2k
Hz
5k
20k
NOISE FLOOR FFT
-40
-60
RL=8ohm Gain=20dB
d
B
V
-80
-100
-120
10 20
50 100 200 500 1k 2k
Hz
5k 10k 20k
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
5 / 8
MIX2007
3W Mono Class-D Audio Power Amplifier
Analog Reference Bypass Capacitor
(CBYP
Application Information
)
The Analog Reference Bypass Capacitor (CBYP) is
the most critical capacitor and serves several
important functions. During start-up or recovery
from shutdown mode, C determines the rate at
which the amplifier starts up. The second function
is to reduce noise caused by the power supply
coupling into the output drive signal. This noise is
from the internal analog reference to the amplifier,
which appears as degraded PSRR and THD+N.
A ceramic bypass capacitor (CBYP ) with values of
0.47μF to 1.0μF is recommended for the best
noise performance. Increasing the bypass
capacitor reduces clicking and popping noise from
power on/off and entering and leaving shutdown.
Input Resistors (RI)
The input resistors (RI) set the gain of amplifier
according to the below equation:
ୖ
ୖ୍
( )
Gain = 2 X
Rf is 150KΩ and the RI is the external input resistor.
For example, if you put a 30KΩ resistor at the
input stage. The gain is below:
ଶꢀ୶ꢀଵହΩ
ଷΩ
Gain =
= 10( )= 20dB
Please place the input resistor very close to the
MIX2007 for better noise performance.
Input Capacitors (Ci )
Shutdown operation
The input capacitor and input resistor from a
high-pass filter with the corner frequency, fc,
determined in below equation:
The MIX2007 employs a shutdown function which
consumption less than 1uA current to save the
standby time. The SHDN input terminal should
ଵ
fc =
be pull low during normal operation when the
amplifier is in use.
(ଶୖ୧େ୧)
The value of input capacitor is important to
consider as it directly affects the bass (low
frequency) performance of the circuit.
Below equation is used to solve the input coupling
capacitance.
Thermal Protection
Thermal protection on the MIX2007 prevents
damage to the device when the internal die
temperature exceeds 180C. There is a ±30C
tolerance on this trip point from device to device.
Once the die temperature exceeds the thermal set
point, the device enters into the shutdown state
and the outputs are disabled. This is not a latched
fault. The thermal fault is cleared once the
temperature of the die is reduced by 30C. The
device begins normal operation at this point with
no external system intervention.
ଵ
CI =
(ଶୖ୧ୡ)
The capacitors should have tolerance of ±10% or
better, because any mismatch in capacitance
causes an impedance mismatch at the corner
frequency.
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
6 / 8
MIX2007
3W Mono Class-D Audio Power Amplifier
封装图（SOP8）
Millimeter(mm)
Symbol
Inch
min
max
min
max
A
A1
A2
b
1.350
0.100
1.350
0.330
0.170
4.700
3.800
5.800
1.750
0.250
1.550
0.510
0.250
5.100
4.000
6.200
0.053
0.004
1.550
0.013
0.006
0.185
0.150
0.228
0.069
0.010
0.061
0.020
0.010
0.200
0.157
0.244
c
D
E
E1
e
1.27(BSC)
0.050(BSC)
0.016 0.050
L
0.400
1.270
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
7 / 8
MIX2007
3W Mono Class-D Audio Power Amplifier
IMPORTANT NOTICE
Shanghai Mixinno Microelectronics and its subsidiaries (Mixinno) reserves the right to make
corrections, modifications, enhancements, improvements, and other changes to its products and to
this document without any notice. The information contained in this document has been carefully
checked and is believed. However, Mixinno shall assume no responsibilities for inaccuracies and
make no commitment to update or to keep the information contained in this document.
Mixinno products are designed only for commercial and normal industrial applications. And are not
authorized for use in life support equipment where a failure of which could lead to death, personal
injury or environmental or property damage. Use of the products in such application is at the
customer’s own risk and expense. Mixinno is not responsible or liable for any incidental which may
result from misapplication or improper use or operation of the product.
It is an unfair and deceptive business practice that resale of Mixinno products or services with
statements different from or beyond the parameters stated by Mixinno for that product or service.
Mixinno is not responsible or liable for any such statements.
There are some probabilities with the products fail. However, Mixinno does its best to improve the
quality and reliability of the products.
Shanghai Mixinno Microelectronics Co., Ltd
Rev 1.2 Mar.2013
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