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

MAX

UNITS

Preamp = 0

= 1kHz (differential

Common-Mode Rejection Ratio

CMRR

Preamp = 5.5dB

Preamp = 20dB

input mode)

Input DC Voltage

Bias Voltage

IN__ inputs

1.22

1.13

1.3

1.2

1.38

1.272

BIAS

SPEAKER AMPLIFIER

= +25°C (volume at mute)

0.5

4.5

Output Offset Voltage

Click-and-Pop Level

= +25°C (volume at 0dB, ENA = 1 and

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

Peak voltage,

Into shutdown

-70

= +25°C

A-weighted, 32 samples

per second, volume at

mute (Note 5)

dBV

Out of shutdown

PVDD_ = V

= 2.7V to 5.5V

f = 217Hz,

100mV

ripple

P-P

Power-Supply Rejection Ratio

(Note 5)

PSRR

= +25°C

f = 1kHz,

100mV

P-P

f = 20kHz,

100mV

P-P

= 3.7V

= 3.3V

= 3.0V

715

565

470

THD+N ≤ 1%, R

8Ω

SPK

Output Power

OUT

f = 1kHz, P

= 350mW, T = +25°C,

OUT

Total Harmonic Distortion + Noise

THD+N

0.04

0.2

SPK

= 8Ω

ΔIN_ = 0

(single-ended)

A-weighted, ENA = 1

and ENB = 0 or ENB = 1

and ENA = 0

ΔIN_ = 1

(differential)

Signal-to-Noise Ratio

SNR

ΔIN_ = 0

(single-ended)

A-weighted ENA =

ENB = 1

ΔIN_ = 1

(differential)

700

Output Frequency

Maxim Integrated

kHz

1 234 5 6 7...32

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