MAX9725DEC

更新时间： 2024-11-02 22:55:07

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
14页	425K
描述
1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown

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MAX9725DEC 数据手册

19-3465; Rev 0; 11/04

1V, Low-Power, DirectDrive, Stereo Headphone

Amplifier with Shutdown

General Description

Features

♦ Low Quiescent Current (2.1mA)

The MAX9725 fixed-gain, stereo headphone amplifier

is ideal for portable equipment where board space is at a

premium. The MAX9725 uses a unique, patented

DirectDrive^TMarchitecture to produce a ground-referenced

output from a single supply, eliminating the need for large

DC-blocking capacitors, saving cost, board space, and

component height. Fixed gains of -2V/V (MAX9725A),

1.5V/V (MAX9725B), -1V/V (MAX9725C), and -4V/V

(MAX9725D) further reduce external component count.

♦ Single-Cell, 0.9V to 1.8V Single-Supply Operation

♦ Fixed Gain Eliminates External Feedback Network

MAX9725A: -2V/V

MAX9725B: -1.5V/V

MAX9725C: -1V/V

MAX9725D: -4V/V

♦ Ground-Referenced Outputs Eliminate DC Bias

♦ No Degradation of Low-Frequency Response Due

The MAX9725 delivers up to 20mW per channel into a

32Ω load and achieves 0.006% THD+N. An 80dB at 1kHz

power-supply rejection ratio (PSRR) allows the MAX9725

to operate from noisy digital supplies without an additional

linear regulator. The MAX9725 includes 8kV ESD protec-

tion on the headphone output. Comprehensive click-and-

pop circuitry suppresses audible clicks and pops at

startup and shutdown. A low-power shutdown mode

reduces supply current to 0.6µA (typ).

to Output Capacitors

♦ 20mW per Channel into 32Ω

♦ Low 0.006% THD+N

♦ High PSRR (80dB at 1kHz)

♦ Integrated Click-and-Pop Suppression

♦ Low-Power Shutdown Control

♦ Short-Circuit Protection

The MAX9725 operates from a single 0.9V to 1.8V supply,

allowing the device to be powered directly from a single

AA or AAA battery. The MAX9725 consumes only

2.1mA of supply current, provides short-circuit protection,

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

perature range. The MAX9725 is available in a tiny

(1.54mm x 2.02mm x 0.6mm) 12-bump chip-scale

package (UCSP™) and a 12-pin thin QFN package

(4mm x 4mm x 0.8mm).

♦

8kV ESD-Protected Amplifier Outputs

♦ Available in Space-Saving Packages

12-Bump UCSP (1.54mm x 2.02mm x 0.6mm)

12-Pin Thin QFN (4mm x 4mm x 0.8mm)

Block Diagram

SINGLE

1.5V CELL

AA OR AAA

BATTERY

Applications

MP3 Players

Cellular Phones

PDAs

Smart Phones

MAX9725

Portable Audio Equipment

DirectDrive OUTPUTS

ELIMINATE DC-BLOCKING

CAPACITORS.

INL

Ordering Information

OUTL

PIN-

PACKAGE

TOP GAIN

MARK (V/V)

PART

TEMP RANGE

C1P

C1N

INVERTING

CHARGE PUMP

MAX9725AEBC-T* -40°C to +85°C 12 UCSP-12

MAX9725AETC -40°C to +85°C 12 TQFN-EP** AAEW

MAX9725BEBC-T* -40°C to +85°C 12 UCSP-12 ACL

MAX9725BETC

MAX9725CEBC-T* -40°C to +85°C 12 UCSP-12

MAX9725CETC -40°C to +85°C 12 TQFN-EP** AAEY

MAX9725DEBC-T* -40°C to +85°C 12 UCSP-12 ACN

MAX9725DETC -40°C to +85°C 12 TQFN-EP** AAEZ

ACK

-2

-1.5

-40°C to +85°C 12 TQFN-EP** AAEX -1.5

OUTR

INR

ACM

-1

-4

SGND

PGND

*Future product—contact factory for availability.

**EP = Exposed paddle.

Pin Configurations appear at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________ 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...14

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与MAX9725DEC相关器件

型号	品牌	获取价格	描述	数据表
MAX9725DETC	MAXIM	获取价格	1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown
MAX9725DETC	ROCHESTER	获取价格	0.025W, 2 CHANNEL, AUDIO AMPLIFIER, QCC12, 4 X 4 MM, 0.80 MM HEIGHT, MO-220-WGGB, TQFN-12
MAX9725DETC+	MAXIM	获取价格	暂无描述
MAX9725DETC+T	MAXIM	获取价格	Audio Amplifier, 0.025W, 2 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMP
MAX9725DETC-T	MAXIM	获取价格	Audio Amplifier, 0.025W, 2 Channel(s), 1 Func, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220-WG
MAX9725E	MAXIM	获取价格	Fully Assembled and Tested
MAX9725EEBC+	MAXIM	获取价格	Audio Amplifier, 2 Func, BICMOS, PBGA12,
MAX9725EEBC+T	ROCHESTER	获取价格	0.025W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA12, 1.54 X 2.02 MM, 0.60 MM HEIGHT, ROHS COMPLIANT
MAX9725EEBC-TG45	MAXIM	获取价格	1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown
MAX9725EETC	MAXIM	获取价格	1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown

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