MAX5440

更新时间： 2024-11-25 00:04:35

品牌	Logo	应用领域
美信 - MAXIM		编码器
页数	文件大小	规格书
16页	635K
描述
Stereo Volume Control with Rotary Encoder Interface

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MAX5440 数据手册

19-0542; Rev 1; 5/06

Stereo Volume Control

with Rotary Encoder Interface

General Description

Features

The MAX5440 dual, 40kΩ logarithmic taper volume con-

trol features a debounced up/down interface for use

with a simple rotary encoder without using a microcon-

troller (µC). Each potentiometer has 32 log-spaced tap

points with a buffered wiper output and replaces

mechanical potentiometers. An integrated bias genera-

♦ Logarithmic Taper Volume Control with (31) 2dB

Steps

♦ Low-Power Wiper Buffers Provide 0.003% THD

♦ Single +2.7V to +5.5V or Dual 2.7V Supplꢀ

Voltage Operation

tor provides the required ((V

+ V ) / 2) bias voltage,

♦ Low 0.5µA Shutdown Supplꢀ Current

♦ Integrated Bias Voltage Generator

♦ Five-Segment LED Volume/Balance Indicator

♦ Clickless Switching

eliminating the need for costly external op-amp circuits

in unipolar audio applications. A mode-indicator LED

output specifies volume or balance control. Five inte-

grated LED drivers indicate volume level or balance set-

tings, depending on the status of the mode indicator.

The MAX5440 includes debounced pushbutton inputs

for mute and mode. The mute input allows a single

pushbutton to change between volume control and the

-90dB (typ) mute setting. The mode input toggles

between volume and balance control. A click-and-pop

suppression feature minimizes the audible noise gener-

ated by wiper transitions. The MAX5440 provides a

nominal temperature coefficient of 35ppm/°C end-to-

end and 5ppm/°C, ratiometrically. The MAX5440 is

available in a 24-pin SSOP package and is specified for

operation over the -40°C to +85°C extended tempera-

ture range.

♦ 40kΩ End-to-End Fixed Resistance Value

♦ Mute Function Toggles to -90dB (tꢀp)

♦ Power-On Reset to -12dBFS Wiper Position

Ordering Information

PKG

CODE

PART

TEMP RANGE PIN-PACKAGE

MAX5440EAG

-40°C to +85°C 24 SSOP

A24-1

Applications

Stereo Volume Control

Desktop Speakers

Typical Operating Circuit

Multimedia Docking Stations

Set-Top Boxes

LOGIC

Automotive Back-Seat Multimedia

LOGIC

PEAK

SHDN

MODEIND

Pin Configuration

V ) / 2

+ SS

MAX5440

TOP VIEW

LOGIC

GND

RIGHT INPUT

MODEIND

LEDIND4

LEDIND3

RENCODEA

RENCODEB

MUTE

HEADPHONE

DRIVER

MIDBIAS

V ) / 2

MAX5440

LEDIND0

LEDIND1

LEFT INPUT

LEDIND2

LEDIND1

MODE

SHDN

GND

LEDIND2

LEDIND3

18 LEDIND0

17 H1

LEDIND4

BIAS

16 L1

15 W1

MIDBIAS

BIAS

ROTARY

ENCODER

SSOP

________________________________________________________________ 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...16

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与MAX5440相关器件

型号	品牌	获取价格	描述	数据表
MAX5440_08	MAXIM	获取价格	Stereo Volume Control with Rotary Encoder Interface
MAX5440_V01	MAXIM	获取价格	Stereo Volume Control with Rotary Encoder Interface
MAX5440EAG	MAXIM	获取价格	Stereo Volume Control with Rotary Encoder Interface
MAX5440EAG+	MAXIM	获取价格	Rotary Position Encoder,
MAX5440EAG+T	MAXIM	获取价格	暂无描述
MAX5441	MAXIM	获取价格	+3V/+5V, Serial-Input, Voltage-Output, 16-Bit DACs
MAX5441	ADI	获取价格	+3V/+5V、串行输入、电压输出、16位DAC
MAX5441_08	MAXIM	获取价格	3V/5V, Serial-Input, Voltage-Output, 16-Bit DACs
MAX5441_09	MAXIM	获取价格	+3V/+5V, Serial-Input, Voltage-Output, 16-Bit DACs
MAX5441ACUA	MAXIM	获取价格	+3V/+5V, Serial-Input, Voltage-Output, 16-Bit DACs

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