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MAX9730EBP+T

更新时间： 2024-01-01 06:02:56

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
15页	316K
描述
2.4W, Single-Supply, Class G Power Amplifier

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数据手册
替代型号

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MAX9730EBP+T 数据手册

2.4W, Single-Supply, Class G Power Amplifier

MAX9730

In differential input configurations, the common-mode

rejection ratio (CMRR) is primarily limited by the exter-

nal resistor and capacitor matching. Ideally, to achieve

the highest possible CMRR, the following external com-

ponents should be selected where:

to provide sufficient current drive. Increasing the value

of C1 improves load regulation and reduces the charge-

pump output resistance to an extent. Above 1µF, the on-

resistance of the switches and the ESR of C1 and C2

dominate. A 4.7µF capacitor is recommended.

Hold Capacitor (C2)

FB−

FB+

The output capacitor value and ESR directly affect the

ripple at PV . Increasing C2 reduces output ripple.

IN+

IN−

Likewise, decreasing the ESR of C2 reduces both rip-

ple and output resistance. A 10µF capacitor is recom-

mended.

and

= C

IN+

IN−

Charge-Pump Frequency Set Resistor (R

)

The charge pump operates in two modes. When the

charge pump is loaded below 100mA, it operates in a

slow mode where the oscillation frequency is reduced

to 1/4 of its normal operating frequency. Once loaded,

the charge-pump oscillation frequency returns to nor-

mal operation. In applications where the design may be

sensitive to the operating charge-pump oscillation fre-

Component Selection

Input-Coupling Capacitor

The AC-coupling capacitors (C ) and input resistors

IN_

(R ) form highpass filters that remove any DC bias from

IN_

an input signal (see the Typical Application

Circuit/Functional Diagram). C

blocks DC voltages

IN_

from the amplifier. The -3dB point of the highpass filter,

assuming zero source impedance due to the input signal

source, is given by:

quency, the value of the external resistor R can be

changed to adjust the charge-pump oscillation fre-

quency (see Figure 4).

f_−3dB

(

)

2π ×R

× C

IN_

CHARGE-PUMP OSCILLATION

Choose C so that f

is well below the lowest fre-

-3dB

FREQUENCY vs. R

quency of interest. Setting f

too high affects the

-3dB

600

550

500

450

400

350

300

250

200

amplifier’s low frequency response. Use capacitors with

low-voltage coefficient dielectrics. Aluminum electrolytic,

tantalum, or film dielectric capacitors are good choices

for AC-coupling capacitors. Capacitors with high-voltage

coefficients, such as ceramics (non-C0G dielectrics),

can result in increased distortion at low frequencies.

> 100mA

LOAD

Charge-Pump Capacitor Selection

Use capacitors with an ESR less than 50mΩ for opti-

mum performance. Low-ESR ceramic capacitors mini-

mize the output resistance of the charge pump. For

best performance over the extended temperature

range, select capacitors with an X7R dielectric.

100

(kΩ)

125

150

Flying Capacitor (C1)

The value of the flying capacitor (C1) affects the load

regulation and output resistance of the charge pump. A

C1 value that is too small degrades the device’s ability

Figure 4. Charge-Pump Oscillation Frequency vs. R

_______________________________________________________________________________________

1...6 7 8910 11 12...15

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MAX9730EBP+T 替代型号

型号	品牌	替代类型	描述	数据表
MAX9788EWP+TG45	MAXIM	类似代替	14VP-P,Class G Ceramic Speaker Driver
MAX9730EWP+TG45	MAXIM	类似代替	2.4W, Single-Supply, Class G Power Amplifier
ISL99203IIZ-T	INTERSIL	功能相似	High Efficiency Audio Subsystem

与MAX9730EBP+T相关器件

型号	品牌	获取价格	描述	数据表
MAX9730EBPT	MAXIM	获取价格	2.4W, Single-Supply, Class G Power Amplifier
MAX9730ETI	MAXIM	获取价格	2.4W, Single-Supply, Class G Power Amplifier
MAX9730ETI+	MAXIM	获取价格	2.4W, Single-Supply, Class G Power Amplifier
MAX9730ETI+T	MAXIM	获取价格	Audio Amplifier, 2.4W, 1 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMPLI
MAX9730EVKIT	MAXIM	获取价格	Configurable Switching Frequency
MAX9730EVKIT+	MAXIM	获取价格	Configurable Switching Frequency
MAX9730EWP+TG45	MAXIM	获取价格	2.4W, Single-Supply, Class G Power Amplifier
MAX9736	MAXIM	获取价格	Mono/Stereo High-Power Class D Amplifier
MAX9736	ADI	获取价格	单声道/立体声大功率D类放大器
MAX9736_V01	MAXIM	获取价格	Mono/Stereo High-Power Class D Amplifier

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