Datasheet > MAX9879_V01

MAX9879_V01

更新时间： 2022-06-24 15:44:49

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
32页	575K
描述
Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier

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MAX9879_V01 数据手册

MAX9879

Stereo Class D Audio Subsystem

with DirectDrive Headphone Amplifier

ELECTRICAL CHARACTERISTICS (continued)

= V

= 3.7V, V

= 1.8V, V

= V

= 0. Single-ended inputs, preamp = 0, volume controls =

PVDDL

PVDDR

CCIO

GND

PGNDL

PGNDR

0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL or HPR to

GND. R = ∞, R = ∞. C1 = C2 = C = 1µF. T = T to T , unless otherwise noted. Typical values are at T = +25°C.)

SPK

BIAS

MIN

MAX

(Notes 3, 4)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

1.5

MAX

UNITS

Current Limit

Efficiency

= 600mW, f = 1kHz

OUT

Speaker Gain

17.4

18.4

A-weighted, (ENA = 1 and ENB = 0

or ENA = 0 and ENB = 1), ΔIN_ = 0

Output Noise

µV

RMS

OUTL to OUTR, OUTR to OUTL,

f = 20Hz to 20kHz

Crosstalk

HEADPHONE AMPLIFIERS

= +25°C (volume at mute)

0.22

1.5

0.85

Output Offset Voltage

= +25°C (Volume at 0dB, ENA = 1 and

ENB = 0 or ENA = 0 and ENB = 1, ΔIN_ = 0)

Peak voltage, T = 25°C Into shutdown

A-weighted, 32 samples

-75

Click-and-Pop Level

dBV

per second, volume at

mute (Note 5)

Out of shutdown

PVDD_ = V

= 2.7V to 5.5V

f = 217Hz,

RIPPLE

= 100mV

f = 1kHz,

P-P

Power-Supply Rejection Ratio

(Note 5)

PSRR

= +25°C

RIPPLE

= 100mV

P-P

f = 20kHz,

RIPPLE

= 100mV

P-P

= 16Ω

= 32Ω

Output Power

THD+N = 1%

OUT

Headphone Gain

2.6

3.4

2.5

= +25°C, HPL to HPR, volume at 0dB,

ENA=1 and ENB = 0 or ENA = 1 and ENB

Channel-to-Channel Gain

Tracking

0.3

= 0, ΔIN_ = 0

= 32Ω

0.018

0.037

= 10mW, f = 1kHz)

OUT

Total Harmonic Distortion + Noise

THD+N

= 16Ω

0.08

= 10mW, f = 1kHz)

OUT

Maxim Integrated

1 2 345 6 7...32

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