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MAX9730_10

更新时间： 2022-11-18 00:11:25
品牌 Logo 应用领域
美信 - MAXIM 放大器功率放大器
页数 文件大小 规格书
12页 188K
描述
2.4W, Single-Supply, Class G Power Amplifier

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MAX9730_10 数据手册

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2.4W, Single-Supply, Class G Power Amplifier  
MAX9730  
ELECTRICAL CHARACTERISTICS (continued)  
(V  
= V  
= V  
= 3.6V, V  
= V  
= 0V, R  
= R = 10kΩ, R  
= R  
= 10kΩ, R = 100kΩ, C1 = 4.7µF, C2 =  
FB-  
FS  
IN+  
IN-  
FB+  
CC  
CPVDD  
SHDN  
GND  
CPGND  
10µF; speaker load resistors (R ) are terminated between OUT+ and OUT-, unless otherwise stated; T = T  
to T  
, unless other-  
MAX  
L
A
MIN  
wise noted. Typical values are at T = +25°C.) (Notes 1, 2)  
A
PARAMETER  
Voltage Gain  
SYMBOL  
CONDITIONS  
MIN  
TYP  
12  
MAX  
UNITS  
A
(Notes 4, 7)  
11.5  
12.5  
dB  
V
V
V
V
V
V
V
V
V
V
= 5V  
2.4  
1.67  
1.25  
0.8  
7.1  
5.9  
5.1  
4.2  
6.5  
CC  
CC  
CC  
CC  
CC  
CC  
CC  
CC  
CC  
= 4.2V  
= 3.6V  
= 3.0V  
= 5V  
THD+N = 1%, f = 1kHz,  
R = 8Ω  
L
Continuous Output Power  
P
V
W
OUT  
= 4.2V  
= 3.6V  
= 3.0V  
= 5V  
f = 1kHz, 1% THD+N,  
Z = 1µF + 10Ω  
L
Output Voltage  
V
RMS  
OUT  
V
V
V
= 4.2V  
= 3.6V  
= 3.0V  
5.4  
4.7  
3.8  
77  
CC  
CC  
CC  
f = 10kHz, 1% THD+N,  
Z = 1µF + 10Ω  
L
V
= 2.7V to 5.5V  
63  
CC  
f = 217Hz, 200mV  
ripple  
77  
P-P  
Power-Supply Rejection Ratio  
(Note 4)  
PSRR  
dB  
f = 1kHz, 200mV  
ripple  
77  
58  
P-P  
f = 20kHz, 200mV  
ripple  
P-P  
R = 8Ω, V  
= 1kHz / 400mV  
RMS  
0.007  
0.12  
L
OUT  
Total Harmonic Distortion Plus  
Noise  
THD+N  
SNR  
%
R = 8Ω, V  
= 1kHz / 1V  
RMS  
L
OUT  
V
= 0.5V  
, inputs to GND by C1N,  
OUT  
RMS  
Signal-to-Noise Ratio  
Dynamic Range  
95  
dB  
dB  
A-weighted  
22Hz to 22kHz  
A-weighted  
96  
99  
DR  
(Note 9)  
Note 1: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.  
Note 2: Testing performed with resistive and inductive loads to simulate an actual speaker load. For dynamic speakers,  
R = 8Ω, 68µH.  
L
Note 3: Designed for 1.8V logic.  
Note 4:  
Note 5: Amplifier inputs AC-coupled to GND.  
Note 6: Testing performed at room temperature with 8Ω resistive load in series with 68µH inductive load connected across BTL  
output for speaker amplifier. Mode transitions are controlled by SHDN. V is the peak output transient expressed in dBV.  
R
IN_  
and R  
have 0.5% tolerance.  
FB_  
CP  
Note 7: Voltage gain is defined as: [V  
- V  
] / [V - V ].  
IN+ IN-  
OUT+  
OUT-  
Note 8: Mode A tone burst tested at full amplitude for one cycle and half amplitude for nine cycles. Mode B tone burst tested at  
full amplitude for three cycles and half amplitude for seven cycles. Full amplitude is defined as 1% THD+N at full battery  
(V  
= 4.2V). Electrical Characteristics table targets must be met at THD+N = 1% for one cycle (Mode A) and THD+N <  
CC  
5% for three cycles (Mode B).  
Note 9: Dynamic range is calculated by measuring the RMS voltage difference between a -60dBFS output signal and the noise  
floor, then adding 60dB. Full scale is defined as the output signal needed to achieve 1% THD+N.  
_______________________________________________________________________________________  
3
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