MAX9700AETB

更新时间： 2024-01-25 08:27:02

品牌	Logo	应用领域
美信 - MAXIM		音频放大器
页数	文件大小	规格书
19页	533K
描述
1.2W, Low-EMI, Filterless, Class D Audio Amplifier

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MAX9700AETB 数据手册

1.2W, Low-EMI, Filterless,

Class D Audio Amplifier

IN-

IN+

OUT-

OUT+

ON(MIN)

- V

OUT-

OUT+

Figure 2. MAX9700 Output with an Input Signal Applied (SSM Mode)

the load as a DC voltage, resulting in finite load current,

increasing power consumption. When no signal is pre-

sent at the input of the MAX9700, the outputs switch as

shown in Figure 4. Because the MAX9700 drives the

speaker differentially, the two outputs cancel each other,

resulting in no net Idle Mode™ voltage across the

speaker, minimizing power consumption.

steering switches and consume negligible additional

power. Any power loss associated with the class D out-

put stage is mostly due to the I ✕ R loss of the MOSFET

on-resistance, and quiescent current overhead.

The theoretical best efficiency of a linear amplifier is

78%; however, that efficiency is only exhibited at peak

output powers. Under normal operating levels (typical

music reproduction levels), efficiency falls below 30%,

whereas the MAX9700 still exhibits >90% efficiencies

under the same conditions (Figure 5).

Efficiency

Efficiency of a class D amplifier is attributed to the

region of operation of the output stage transistors. In a

class D amplifier, the output transistors act as current-

Idle Mode is a trademark of Maxim Integrated Products.

10 ______________________________________________________________________________________

1...7 8 91011 12 13...19

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型号	品牌	获取价格	描述	数据表
MAX9700AETB+	MAXIM	获取价格	Audio Amplifier, 0.8W, 1 Channel(s), 1 Func, BICMOS, TDFN-10
MAX9700AETB+	ROCHESTER	获取价格	0.8W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10, 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-10
MAX9700AETB+T	MAXIM	获取价格	Audio Amplifier, 0.8W, 1 Channel(s), 1 Func, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDF
MAX9700AEUB	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX9700AEUB+	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier
MAX9700AEUB+T	MAXIM	获取价格	Audio Amplifier, 0.8W, 1 Channel(s), 1 Func, BICMOS, PDSO10, MO-187C-BA, UMAX-10
MAX9700AEUB-T	MAXIM	获取价格	Audio Amplifier, 1.6W, 1 Channel(s), 1 Func, BICMOS, PDSO10, MO-187CBA, MICRO, SOP-10
MAX9700B	MAXIM	获取价格	Selectable Switching Frequency
MAX9700BEBC+	MAXIM	获取价格	Audio Amplifier, 1.6W, 1 Channel(s), 1 Func, BICMOS, PBGA12, UCSP-12
MAX9700BEBC+T	MAXIM	获取价格	1.2W, Low-EMI, Filterless, Class D Audio Amplifier