MAX9742 查看數據表（PDF） - Maxim Integrated

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MAX9742

Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs

Maxim Integrated 

Single-/Dual-Supply, Stereo 16W,

Class D Amplifier with Differential Inputs

ELECTRICAL CHARACTERISTICS—Single-Supply, Single-Ended Output (continued)

(VDD = 24V, VSS = VSUB = LGND = 0V, VSHDN = 3.3V, VMID = 12V, CVDD = 660µF, CMID1 = 10µF, CMID2 = 10µF, R1 = R2 = R3 =

10kΩ, CSFT = 0.47µF, COUT = 1000µF, CFB_1 = 150pF, CFB_2 = 10pF, CBOOT = 0.1µF, CREGP = CREGM = 1µF, RIN_ = 30.1kΩ,

RF1A = 121kΩ, RF1B = 562kΩ, RF2 = 681kΩ, RREF = 68kΩ, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Total Harmonic Distortion Plus

Noise

THD+N

fIN = 1kHz,

BW = 22Hz to 22kHz

(Notes 5, 6, and 7)

RL = 8Ω, POUT = 3.5W

RL = 4Ω, POUT = 5W

0.06

0.08

%

Signal-to-Noise Ratio

SNR

POUT = 9.5W, RL = 8Ω,

BW = 22Hz to 22kHz

(Notes 5 and 6)

Unweighted

A-weighted

88

dB

93

Half-Bridge Switch

On-Resistance

RDS(ON)

0.4

0.7

Ω

Switch Rise and Fall Times

IN_ Input Bias Current

MID Input Bias Current

Shutdown-to-Full Operation

Power-On to Full Operation

Thermal-Overload Threshold

Temperature

No load (Note 4)

IMID

tSON

tPU

TSH

VDD = 24V, no load

VSHDN = 3.3V

Junction temperature

50

ns

-1

+1

µA

50

µA

68

ms

1.5

s

150

oC

Short-Circuit Output Current

ISC

Click-and-Pop

KCP

DIGITAL INPUTS (SHDN) (Note 9)

Logic-Input Low Voltage

VIL

Logic-Input High Voltage

VIH

Input Leakage Current

OUT_ shorted to VDD or VSS

Peak voltage, 32-samples

per second, A-weighted

(Notes 4 and 8)

Into shutdown

Out of shutdown

2.9

4.5

A

-38

dBV

-40

0.4

V

2.4

V

-1

+1

µA

ELECTRICAL CHARACTERISTICS—Dual Supplies

(VDD = 15V, VSS = VSUB = -15V, VSHDN = 3.3V, VMID = LGND = 0V, CVDD = CVSS = 1000µF, CBYP = 1µF, CSFT = 0.22µF, CFB_1 =

150pF, CFB_2 = 10pF, CBOOT = 0.1µF, CREGP = CREGM = 1µF, RIN_ = 30.1kΩ, RF1A = 121kΩ, RF1B = 562kΩ, RF2 = 681kΩ, RREF =

68kΩ, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)

PARAMETER

Positive Supply Voltage Range

Negative Supply Voltage

Range

Positive Supply Mute Mode

Current

Negative Supply Mute Mode

Current

SYMBOL

VDD (Note 3)

VSS (Note 3)

CONDITIONS

No load, VSFT = 0V (outputs not switching)

No load, VSFT = 0V (outputs not switching)

MIN TYP MAX UNITS

10

20

V

-20

-10

V

8

11

mA

-12

-8

mA

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