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LM4880G-D08-T [UTC]

DUAL 250mW AUDIO POWER AMPLIFIER WITH SHUTDOWN MODE; 具有关断功能双模双250mW的音频功率放大器
LM4880G-D08-T
型号： LM4880G-D08-T
厂家： Unisonic Technologies    Unisonic Technologies
描述：

DUAL 250mW AUDIO POWER AMPLIFIER WITH SHUTDOWN MODE
具有关断功能双模双250mW的音频功率放大器

放大器 功率放大器
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UNISONIC TECHNOLOGIES CO., LTD  
LM4880  
CMOS IC  
DUAL 250mW AUDIO POWER  
AMPLIFIER WITH SHUTDOWN  
MODE  
„
DESCRIPTION  
The UTC LM4880 is a dual audio power amplifier capable of  
delivering typically 250mW per channel of continuous average power  
to an 8Ω load with 0.1% THD+N using a 5V power supply.  
The UTC LM4880 features an externally controlled, low-power  
consumption shutdown mode, as well as an internal thermal  
shutdown protection mechanism.  
The unity-gain stable UTC LM4880 can be configured by external  
gain-setting resistors.  
„
FEATURES  
* No bootstrap capacitors or snubber circuits are necessary  
* Unity-gain stable  
* External gain configuration capability  
„
APPLICATIONS  
* Personal Computers  
* CD-ROM Players  
* Headphone Amplifier  
„
ORDERING INFORMATION  
Ordering Number  
Lead Free  
Package  
Packing  
Halogen Free  
LM4880G-D08-T  
LM4880G-SH2-R  
LM4880G-SH2-T  
LM4880L-D08-T  
DIP-8  
Tube  
Tape Reel  
Tube  
LM4880L-SH2-R  
HSOP-8  
HSOP-8  
LM4880L-SH2-T  
www.unisonic.com.tw  
Copyright © 2012 Unisonic Technologies Co., Ltd.  
1 of 12  
QW-R502-033,C  
LM4880  
CMOS IC  
„
PIN CONFIGURATION  
„
PIN DESCRIPTION  
PIN NO  
PIN NAME  
OUT A  
IN A  
I/O  
DESCRIPTION  
1
2
3
4
O
I
Channel A output  
Channel A audio input  
BYPASS  
GND  
I
Connect to internal voltage divider for middle supply bias  
Ground  
Shutdown mode control input, high active, place LM4880 into shutdown mode,  
when held high  
5
SHUTDOWN  
I
6
7
8
IN B  
OUT B  
VDD  
I
Channel B audio input  
Channel B output  
Supply voltage  
O
UNISONIC TECHNOLOGIES CO., LTD  
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QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
ABSOLUTE MAXIMUM RATINGS (Note 2)  
PARAMETER  
SYMBOL  
VDD  
RATINGS  
6.0  
UNIT  
Supply Voltage  
V
V
V
V
Input Voltage  
VIN  
-0.3 ~ VDD+0.3  
3500  
ESD Susceptibility (Note 3)  
ESD Susceptibility (Note 4)  
Power Dissipation (Note 5)  
Junction Temperature  
Operating Temperature  
Storage Temperature  
ESD  
250  
PD  
TJ  
Internally limited  
150  
℃
℃
℃
TOPR  
TSTG  
-40 ~ +85  
-65 ~ +150  
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.  
Absolute maximum ratings are stress ratings only and functional device operation is not implied.  
2. Absolute Maximum Ratings indicate limits beyond which damage may occur. Operating ratings indicate  
conditions for which the device is functional, but do not guarantee specific performance limits. Electrical  
Characteristics state DC and AC electrical specifications under particular test conditions which guarantee  
specific performance limits. This assumes that the device is within the operating ratings. Specifications are  
not guaranteed for parameters where no limit is given, however, the typical value is a good indication of  
device performance.  
3. Human body model, 100 pF discharged through a 1.5 kΩ resistor.  
4. Machine model, 220 pF ~ 240 pF discharged through all pins.  
5.  
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA,  
and the ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) /θJA or  
the number given in the Absolute Maximum Ratings, whichever is lower. For the UTC LM4880, TJMAX  
=
15℃, and the typical junction-to-ambient thermal resistance is 170℃/W for SOP-8 package and 107℃/W  
for DIP-8 package.  
„
THERMAL DATA  
PARAMETER  
SYMBOL  
RATINGS  
107  
UNIT  
DIP-8  
Junction to Ambient  
Junction to Case  
θJA  
℃/W  
HSOP-8  
DIP-8  
42.3  
37  
θJC  
℃/W  
HSOP-8  
12  
„
OPERATING RATINGS  
PARAMETER  
Supply Voltage  
Temperature Range (TMIN≤TA≤TMAX  
SYMBOL  
VDD  
RATINGS  
2.7 ~ 5.5  
-40 ~ +85  
UNIT  
V
)
TA  
℃
UNISONIC TECHNOLOGIES CO., LTD  
3 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
ELECTRICAL CHARACTERISTICS (Note 1,2)  
(TA=25℃, the following specifications apply for VDD=5V, f=1kHz unless otherwise specified)  
PARAMETER  
Supply Voltage  
SYMBOL  
VDD  
TEST CONDITIONS  
MIN TYP MAX UNIT  
2.7  
5.5  
V
Quiescent Power Supply Current  
Shutdown Current  
IDD  
VIN=0V, IOUT=0A  
3.6  
0.7  
5
6.0 mA  
ISHDN  
VPIN5=VDD  
VIN=0V  
5
µA  
mV  
mW  
mW  
mW  
mW  
%
Output Offset Voltage  
VO(OFF)  
50  
RL=8Ω  
RL=32Ω  
RL=8Ω  
RL=32Ω  
200 250  
85  
THD=0.1%(MAX), f=1KHz  
Output Power  
POUT  
325  
THD+N=10%, f=1KHz  
110  
RL=8Ω, POUT=200mW, f=1KHz  
0.03  
0.02  
50  
Total Harmonic Distortion + Noise  
Power Supply Rejection Ratio  
THD+N  
PSRR  
RL=32Ω, POUT=75mW, f=1KHz  
%
CB=1.0μF, VRIPPLE=200mVRMS, f=100Hz  
dB  
Notes: 1. All voltages are measured with respect to the ground pin, unless otherwise specified.  
2. Absolute Maximum Ratings indicate limits beyond which damage may occur. Operating ratings indicate  
conditions for which the device is functional, but do not guarantee specific performance limits. Electrical  
Characteristics state DC and AC electrical specifications under particular test conditions which guarantee  
specific performance limits. This assumes that the device is within the operating ratings. Specifications are  
not guaranteed for parameters where no limit is given, however, the typical value is a good indication of  
device performance.  
UNISONIC TECHNOLOGIES CO., LTD  
4 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL APPLICATION  
VDD  
CS  
0.1µF  
+
RF  
20kΩ  
Audio  
Input  
8
*CI  
2 IN A  
+
*CO  
-
OUT A  
1
+
RI  
20kΩ  
+
15kΩ  
RL  
50kΩ  
Shutdown  
8Ω or 32Ω  
VDD/2  
5
3
Bias  
Bypass  
+
CB  
1.0µF  
50kΩ  
*CO  
RI  
20kΩ  
Audio  
Input  
+
-
7
OUT B  
15kΩ  
*Ci  
+
IN B  
6
+
RL  
8Ω or 32Ω  
RF  
20kΩ  
GND  
4
Fig. 1 Typical Audio Amplifier Application Circuit  
„
EXTERNAL COMPONENTS DESCRIPTION (Fig. 1)  
COMPONENTS FUNCTIONAL DESCRIPTION  
Inverting input resistance which sets the closed-loop gain in conjunction with RF. This resistor  
also forms a high pass filter with CI at fC = 1/(2πRICI).  
1.  
2.  
RI  
CI  
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also  
creates a high pass filter with RI at fC = 1/(2πRICI).  
3.  
4.  
5.  
RF  
CS  
CB  
Feedback resistance which sets closed-loop gain in conjunction with RI.  
Supply bypass capacitor which provides power supply filtering.  
Bypass pin capacitor which provides half-supply filtering.  
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high  
pass filter with RL at fO = 1/(2πRLCO).  
6.  
CO  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
AUTOMATIC SHUTDOWN CIRCUIT  
VDD  
20kΩ  
0.1µF  
1
AUDIO  
INPUT  
HEADPHONE JACK  
2
3
8
+
100µF  
+
-
UTC  
0.33µF 20kΩ  
LM4880  
RO  
5
VDD  
+
1kΩ  
+
4
RSD  
100kΩ  
RP  
1µF  
1MΩ  
TO CHANNEL B  
OUTPUT(PIN 7)  
VIA COUPLING  
CAPACITOR  
Fig. 2 Automatic Shutdown Circuit  
„
AUTOMATIC SWITCHING CIRCUIT  
VDD  
20kΩ  
AUDIO  
INPUT  
0.1µF  
1
HEADPHONE JACK  
20kΩ  
2
3
+
8
100μF  
+
-
UTC  
0.33µF  
LM4880  
VDD  
5
RO  
1kΩ  
+
4
+
RP  
1MΩ  
1µF  
RSD  
100kΩ  
TO UTC LM4880  
CHANNEL B OUTPUT  
(PIN 7) VIA COUPLING  
CAPACITOR  
20kΩ  
VDD  
0.1μF  
6
20kΩ  
4
3
+
-
5
RL  
8Ω  
LM4861  
0.33µF  
8
+
+
1
1µF  
7
2
Fig. 3 Automatic Switching Circuit  
UNISONIC TECHNOLOGIES CO., LTD  
6 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL CHARACTERISTICS  
UNISONIC TECHNOOGIES CO., LTD  
7 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL CHARACTERISTICS(Cont.)  
UNISONIC TECHNOLOGIES CO., LTD  
8 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL CHARACTERISTICS(Cont.)  
UNISONIC TECHNOLOIES CO., LTD  
9 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL CHARACTERISTICS(Cont.)  
Channel Separation  
Output Attenuatin in Shutdown Mode  
0.0  
-20.00  
-40.00  
-60.00  
0.0  
10.00  
20.00  
30.00  
40.00  
50.00  
60.00  
70.00  
80.00  
90.00  
100.0  
RL=8Ω  
0dB=1.3Vrms  
RL=8Ω  
VDD=5.0V  
VPIN3=5.0V  
POUT=200mW  
0dB=200mW  
GV=1  
CB=1.0µF  
Channel B to A  
Channel A to B  
RI=RF=10kΩ  
-80.00  
-100.0  
-120.0  
-140.0  
RI=10kΩ  
RF=20kΩ  
RI=RF=20KΩ  
20  
1k  
10k 20k  
100  
20  
100  
1k  
Frequency (Hz)  
10k 20k  
Frequency (Hz)  
Noise Floor  
Power Supply Rejection Ratio  
VPIN3=2.5V(FORCED)  
1m  
100µ  
10µ  
70  
RL=8Ω  
GV=1  
BW<22kHz  
60  
50  
40  
30  
20  
VDD=5.0V  
V
RIPPLE=200mVRMS  
10  
0
0dB=200mVRMS  
CB=0.1µF  
100  
RL=8Ω  
1µ  
20  
100  
1k  
10k 20k  
10  
1k  
10k  
100k  
Frequency (Hz)  
Frequency (Hz)  
Open Loop Frequency Response  
Supply Current vs Supply Voltage  
100  
80  
60  
40  
20  
0
225  
180  
135  
90  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0.0  
VPIN5=0V  
RL=∞  
Gain  
Phase  
45  
0
3.0  
10  
100  
1k  
10k 100k 1M 10M 100M  
2.5  
3.5  
4.0  
4.5  
5.0  
5.5  
Frequency (Hz)  
Supply Voltage (V)  
UNISONIC TECHNOLOGIES CO., LTD  
10 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
„
TYPICAL CHARACTERISTICS(Cont.)  
Frequency Response vs. Output Capacitor Size  
Frequency Response vs. Output Capacitor Size  
5.0000  
5.0000  
GV=-1, CI=10µF  
GV=-1, CI=10µF  
RI=20kΩ, RL=8Ω  
RI=20kΩ, RL=32Ω  
0.0  
-5.000  
-10.00  
-15.00  
-20.00  
0.0  
-5.000  
-10.00  
-15.00  
-20.00  
CO=220µF  
CO=470µF  
CO=1000µF  
CO=2200µF  
CO=47µF  
CO=100µF  
CO=220µF  
CO=470µF  
20  
10k  
100k  
10k  
100k  
100  
1k  
Frequency (Hz)  
20  
100  
1k  
Frequency (Hz)  
Frequency Response vs Input Capacitor Size  
Typical Application Frequency Response  
5.0000  
0.0  
5.0000  
0.0  
i
CI=0.1µF  
CI=0.1µF  
CO=470µF  
-5.000  
-5.000  
-10.00  
-15.00  
-20.00  
CI=0.22µF  
CI=0.47µF  
CI=1.0µF  
CI=1.0µF  
CO=470µF  
-10.00  
-15.00  
-20.00  
GV=-1  
GV=-1  
RI=20kΩ  
RL=8Ω  
RI=20kΩ  
COUT=10000µF  
RL=8Ω  
100  
1k  
100  
1k  
20  
10k  
100k  
20  
10k  
100k  
Frequency (Hz)  
Frequency (Hz)  
Typical Application Frequency Response  
5.0000  
0.0  
CI=1.0µF  
-5.000  
-10.00  
-15.00  
-20.00  
CO=220µF  
CI=0.1µF  
CO=220µF  
GV=-1  
RI=20kΩ  
RL=32Ω  
10k  
100k  
20  
100  
1k  
Frequency (Hz)  
UNISONIC TECHNOLOGIES CO., LTD  
11 of 12  
QW-R502-033,C  
www.unisonic.com.tw  
LM4880  
CMOS IC  
UTC assumes no responsibility for equipment failures that result from using products at values that  
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or  
other parameters) listed in products specifications of any and all UTC products described or contained  
herein. UTC products are not designed for use in life support appliances, devices or systems where  
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in  
whole or in part is prohibited without the prior written consent of the copyright owner. The information  
presented in this document does not form part of any quotation or contract, is believed to be accurate  
and reliable and may be changed without notice.  
UNISONIC TECHNOLOGIES CO., LTD  
12 of 12  
QW-R502-033,C  
www.unisonic.com.tw  

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