MAX4901, MAX4902, MAX4903, MAX4904, MAX4905 低RON、双路SPST/单路SPDT、无喀嗒声切换开关，可处理负信号

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概述

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MAX4901–MAX4905开关具有负信号处理能力，允许低于地电位的信号通过开关，且不会产生失真。MAX4901/MAX4902是双路SPST (单刀/单掷)开关，而MAX4903/MAX4904/MAX4905则是单路SPDT (单刀/双掷)结构。这些模拟开关工作在+1.8V至+5.5V单电源下，具有0.6Ω的低导通电阻，使其尤其适合切换音频信号。

MAX4905包括一个比较器，用于耳机检测或静音/发送按键功能。MAX4902/MAX4904/MAX4905具有内置并联电阻，可自动对任何NO_及NC连接点上的电容放电。这样在预先充电的连接点之间切换音频信号时可降低杂音。先断后合特性和自动放电也有助于降低噼啪声。

这些SPST和SPDT开关采用节省空间的8引脚TDFN和9焊球UCSP™封装，工作在-40°C至+85°C扩展级温度范围内。

关键特性

应用/使用

	低至V_CC - 5.5V的信号无失真通过
	比较器用于耳机或静音检测(MAX4905)
	内置并联电阻，实现无杂音切换(MAX4902/MAX4904/MAX4905)
	0.6Ω (典型值)低导通电阻(R_ON)
	0.25Ω导通电阻平坦度
	+1.8V至+5.5V电源电压
	0.04% THD

	蜂窝电话
	MP3播放器
	笔记本电脑
	PDA和手持设备

Key Specifications: Switches and Multiplexers (Low Voltage)

Part Number

Configuration

Number of Channels

Normally (Open/Closed)

V_SUPPLY, Single (min) (V)

V_SUPPLY, Single (max) (V)

R_ON (max) (Ω)

I_{L (OFF)} (max) (nA)

t_ON (max) (nS)

t_OFF (max) (nS)

Q_INJECTION (pC)

ΔR_ON (max) (Ω)

R_FLAT(ON) (max) (Ω)

Redundancy Switch

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^**

MAX4901

SPST

Open

1.8

5.5

100

125

0.25

0.5

Yes

THIN QFN (Dual)/8
UCSP/9

$0.95 @ 1k

MAX4902

SPST

Open

$0.95 @ 1k

MAX4903

SPDT

$0.95 @ 1k

MAX4904

SPDT

$0.95 @ 1k

MAX4905

SPDT

$1.05 @ 1k

See All Switches and Multiplexers (Low Voltage) (127)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.