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MAX9726BEBPT

更新时间： 2024-11-03 04:41:31

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
26页	525K
描述
DirectDrive, Headphone Amplifier with BassMax, I2C, Volume and Gain Control

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MAX9726BEBPT 数据手册

19-0627; Rev 0; 9/06

DirectDrive, Headphone Amplifier with

BassMax, I C, Volume and Gain Control

General Description

Features

♦ 105mW DirectDrive Headphone Amplifier

The MAX9726 stereo, DirectDrive™, headphone amplifier

with BassMax and volume control is ideal for portable

audio applications where space is at a premium and per-

formance is essential. The MAX9726 operates from a sin-

gle 2.7V to 5.5V power supply and includes features that

reduce external component count, system cost, board

space, and offer improved audio reproduction. High

85dB PSRR makes the MAX9726 ideal for direct connec-

tion to a battery-powered supply and eliminates the need

for a dedicated LDO. The MAX9726 features Maxim’s

industry-leading click-and-pop suppression circuitry,

which reduces/eliminates audible transients during

power-up and power-down.

Eliminates Bulky DC-Blocking Capacitors

♦ 2.7V to 5.5V Single-Supply Operation

♦ Integrated 64-Level Volume Control

♦ High 85dB PSRR at 1kHz

♦ Software-Enabled Bass Boost (BassMax)

♦ Industry-Leading Click-and-Pop Suppression

♦ ±7.5kV HBM ESD-Protected Headphone Outputs

♦ Short-Circuit and Thermal-Overload Protection

♦ Low-Power Shutdown Mode (8µA)

♦ Low 0.02% THD+N

The headphone amplifier uses Maxim’s patented^†

DirectDrive architecture that produces a ground-refer-

enced output from a single supply, eliminating the need

for large DC-blocking capacitors. The headphone ampli-

fiers deliver 105mW into a 32Ω load and feature low

0.02% THD+N.

♦ I C/SMBus-Compatible Interface

♦ Available in Space-Saving, Thermally Efficient

Packages

20-Bump UCSP (2mm x 2.5mm x 0.62mm)

20-Pin TQFN (4mm x 4mm x 0.75mm)

Ordering Information

The BassMax feature boosts the bass response of the

amplifier, improving audio reproduction when using inex-

pensive headphones. The integrated volume control fea-

tures 64 discrete volume levels, eliminating the need for

an external potentiometer. External resistors set the

MAX9726’s overall gain allowing for custom gain settings.

SLAVE

ADDRESS

PKG

CODE

PART

PIN-PACKAGE

MAX9726AEBP+T* 20 UCSP-20

MAX9726AETP+ 20 TQFN-EP**

MAX9726BEBP+T* 20 UCSP-20

MAX9726BETP+ 20 TQFN-EP**

1001100

1001101

B20-1

T2044-3

B20-1

BassMax and the volume control are enabled through the

I²C/SMBus^™-compatible interface. Shutdown can be con-

trolled through the hardware or software interface.

T2044-3

Note: All devices specified over the -40°C to +85°C operating

range.

The MAX9726 consumes only 5.5mA of supply current,

provides short-circuit and thermal-overload protection,

and is specified over the -40°C to +85°C extended tem-

perature range. The MAX9726 is available in a tiny

(2mm x 2.5mm x 0.62mm) 20-bump chip-scale pack-

age (UCSP™) and a 20-pin TQFN package (4mm x

4mm x 0.75mm).

+Denotes lead-free package.

*Future product—contact factory for availability.

**EP = Exposed pad.

Simplified Block Diagram

2.7V TO 5.5V SUPPLY

Applications

BassMax

BML

SCL

Cell Phones

Automotive Rear-Seat

Entertainment (RSE)

I C

SDA

INTERFACE

MP3/PMP Players

Flat-Panel TVs

FBL

INL

Portable CD/DVD/MD

Players

OUTL

OUTR

VOLUME

CONTROL

†

U.S. Patent # 7,061,327

INR

FBR

MAX9726

BMR

BassMax

SMBus is a trademark of Intel Corp.

UCSP is a trademark of Maxim Integrated Products, Inc.

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...26

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与MAX9726BEBPT相关器件

型号	品牌	获取价格	描述	数据表
MAX9726BETP	MAXIM	获取价格	DirectDrive, Headphone Amplifier with BassMax, I2C, Volume and Gain Control
MAX9726BETP+	MAXIM	获取价格	Audio Amplifier, 0.124W, 2 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HIEGHT, ROHS COMP
MAX9726BETP+	ROCHESTER	获取价格	0.124W, 2 CHANNEL, AUDIO AMPLIFIER, QCC20, 4 X 4 MM, 0.80 MM HIEGHT, ROHS COMPLIANT, MO-22
MAX9726BETP+T	MAXIM	获取价格	Audio Amplifier, 0.124W, 2 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HIEGHT, ROHS COMP
MAX9727	MAXIM	获取价格	Quad Audio Line Driver with 3VRMS Output
MAX9727EEP	MAXIM	获取价格	Quad Audio Line Driver with 3VRMS Output
MAX9727EEP+	ROCHESTER	获取价格	LINE DRIVER, PDSO20, 0.150 INCH, 0.025 INCH PITCH, LEAD FREE, MO-137AD, QSOP-20
MAX9727EEP+T	MAXIM	获取价格	Line Driver, 4 Func, 4 Driver, BICMOS, PDSO20, 0.150 INCH, 0.025 INCH PITCH, LEAD FREE, MO
MAX9728	MAXIM	获取价格	60mW, DirectDrive, Stereo Headphone Amplifiers with Shutdown
MAX9728	ADI	获取价格	60mW、DirectDrive、立体声耳机放大器，带有关断

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