MAXIM MAX4854 User Manual

________________________________

概述

MAX4854

四路、单刀/单掷

(SPST)

开关采用

+2V至+5.5V

单电源供电，能够处理大于电源摆幅的信号。该开关具
有7Ω的低导通电阻和

30pF

导通电容，可理想用于数据信

号切换。

对于超摆幅应用，超过正电源的信号(高达

+5.5V)

仍可以

无失真地通过开关。

MAX4854

采用节省空间的、16引脚、

3mm x 3mm

薄型

QFN

封装，工作在

-40°C至+85°C

的扩展级温度范围。

____________________________________________

应用

USB

开关

蜂窝电话

笔记本电脑

PDA

及其它手持式设备

________________________________

特性

♦

USB 2.0

全速 (

12Mbps

) 和

USB 1.1

信号开关

♦

可切换大于

V

CC

的信号

♦

7Ω

导通电阻

♦

30pF

导通电容

♦

-3dB

带宽：

150MHz

♦

兼容

1.8V

逻辑电平

♦

+2V至+5.5V

电源范围

♦

0.01µA

低电源电流

♦

采用节省空间的、

3mm x 3mm、16

引脚

TQFN

封装

MAX4854

7Ω

、四路

SPST

开关，

可处理超摆幅信号

TOP VIEW

16

1

2

3

4

12

11

10

9

15 14 13

5678

COM1

IN1

VCCIN4

COM4

N.C.

NO4

IN3

N.C.

IN2

COM2

NO2

GND

NO3

COM3

NO1

MAX4854

3mm x 3mm THIN QFN

CONNECT EXPOSED PADDLE TO PC BOARD GROUND.

____________________________

引脚配置

____________________________

定购信息

MAX4854

NO1

COM1
IN1

7Ω

NO2

COM2
IN2

7Ω

NO3

COM3
IN3

7Ω

NO4

COM4
IN4

7Ω

TRUTH TABLE

SWITCHES SHOWN
FOR LOGIC "0" INPUT

IN_

0
1

NO_
OFF

ON

________________________

方框图/真值表

19-3472; Rev 0; 10/04

*

EP =

裸露焊盘。

本文是

Maxim

正式英文资料的译文，

Maxim

不对翻译中存在的差异或由此产生的错误负责。请注意译文中可能存在文字组织或

翻译错误，如需确认任何词语的准确性，请参考

Maxim

提供的英文版资料。

索取免费样品和最新版的数据资料，请访问

Maxim

的主页：

www.maxim-ic.com.cn

。

________________________________________________________________ Maxim Integrated Products 1

PART TEMP RANGE

MAX4854ETE -40°C to +85°C 16 TQFN-EP* ACE

PIN­PACKAGE

TOP

MARK

MAX4854

7Ω

、四路

SPST

开关，

可处理超摆幅信号

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +2.7V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C, unless other­wise noted.) (Note 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VCC, IN_, COM_, NO_ to GND (Note 1) ................-0.3V to +6.0V

Closed-Switch Continuous Current COM_, NO_, NC_ .....±50mA

Peak Current COM_, NO_

(pulsed at 1ms, 50% duty cycle)................................±100mA

Peak Current COM_, NO_

(pulsed at 1ms, 10% duty cycle)................................±120mA

Continuous Power Dissipation (T

A

= +70°C)

16-Pin Thin QFN (derate 20.8mW/°C above +70°C) ....1667mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Note 1: Signals on IN_, NO_, or COM_ below GND are clamped by internal diodes. Limit forward-diode current to maximum current

rating.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current I

ANALOG SWITCH

Analog Signal Range

On-Resistance R

On-Resistance Match
Between Channels
(Notes 3, 4)

On-Resistance
Flatness (Note 5)

NO_ Off-Leakage
Current

COM_ On-Leakage
Current

DYNAMIC CHARACTERISTICS

Skew (Note 3) t

Propagation Delay
(Note 3)

Turn-On Time t

Turn-Off Time t

Charge Injection Q V

Off-Isolation ( N ote 6) f = 100kH z, V

Crosstalk f = 1MHz, V

-3dB Bandwidth BW Signal = 0dBm, RL = 50Ω, CL = 5pF, Figure 4 150 MHz

CC

CC

V

,

NO_

V

COM_

ON

∆R

ON

R

FLAT

I

OFF

I

ON

SKEWRS

t

PD

ON

OFF

VCC = +5.5V, V

VCC = +3V, I
V

= 0 to +5.5V

NO_

VCC = +3V, I
V

= +1.5V

NO_

VCC = +3V; I

= +1V, +2V, +3V

V

NO_

VCC = +5.5V, V
V

= +4.5V or +1V

COM_

VCC = +5.5V; V
floating; V

RS = 39Ω, CL = 50pF, Figure 2 0.9 2 ns

VCC = +3V, V
R

L

VCC = +3V, V
R

L

COM_

COM_

= 39Ω, CL = 50pF, Figure 2 0.1 1 ns

= 300Ω, CL = 50pF, Figure 1

= 300Ω, CL = 50pF, Figure 1

= +1.5V, RS = 0Ω, CL = 1nF, Figure 3 8 pC

= 0 or V

IN_

= 10mA,

COM_

= 10mA,

COM

= 10mA;

COM_

NO_

NO_

= +1V, +4.5V, or floating

= +1.5V,

NO_

= +1.5V,

NO_

= 1V

C OM _

= 1V

COM_

CC

= +1V or +4.5V,

= +1V, +4.5V, or

, RL = 50Ω , C L = 5p F, Fi g ur e 4 -80 dB

RM S

, RL = 50Ω, CL = 5pF, Figure 4 -95 dB

RMS

TA = +25°C 7 9

T

= -40°C to +85°C 10

A

TA = +25°C 0.2 0.4

T

= -40°C to +85°C 0.5

A

TA = +25°C 2.5 3.75

T

= -40°C to +85°C 4.0

A

TA = +25°C - 2 +2

T

= -40°C to +85°C -10 +10

A

TA = +25°C - 2 +2

T

= -40°C to +85°C - 12.5 +12.5

A

TA = +25°C 40 60

T

= -40°C to +85°C 100

A

TA = +25°C 30 40

T

= -40°C to +85°C 60

A

2.0 5.5 V

0.01 1 µA

0 5.5 V

Ω

Ω

Ω

nA

nA

ns

ns

MAX4854

7Ω

、四路

SPST

开关，

可处理超摆幅信号

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.7V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.0V, TA= +25°C, unless other­wise noted.) (Note 2)

Note 2: Specifications are 100% tested at T

A

= +85°C only, and guaranteed by design and characterization over the specified tem-

perature range.

Note 3: Guaranteed by design and characterization; not production tested.
Note 4: ∆R

ON

= R

ON(MAX)

- R

ON(MIN)

.

Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the

specified analog signal ranges.

Note 6: Off-isolation = 20log

10

(V

COM_

/ V

NO_

), V

COM_

= output, V

NO_

= input to off switch.

_______________________________________________________________

典型工作特性

(VCC= 3.0V, TA= +25°C, unless otherwise noted.)

ON-RESISTANCE vs. COM VOLTAGE

MAX4854 toc01

COM VOLTAGE (V)

ON-RESISTANCE (Ω)

42

5

10

15

20

25

30

35

40

45

0

06

VCC = 1.8V

VCC = 2.0V

VCC = 2.3V

VCC = 2.5V

VCC = 3.0V

VCC = 5.0V

ON-RESISTANCE vs. COM VOLTAGE

MAX4854 toc02

COM VOLTAGE (V)

ON-RESISTANCE (Ω)

42

3

4

5

6

7

8

2

06

VCC = 3.0V

TA = +85°C

TA = +25°C

TA = -40°C

ON-RESISTANCE vs. COM VOLTAGE

MAX4854 toc03

COM VOLTAGE (V)

ON-RESISTANCE (Ω)

541 2 3

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

1.5
06

VCC = 5.0V

TA = +85°C

TA = +25°C

TA = -40°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

NO_ Off-Capacitance C

COM On-Capacitance C

Total Harmonic
Distortion

THD f = 20Hz to 20kHz, V

DIGITAL I/O (IN_)

Input Logic High
Voltage

Input Logic Low
Voltage

V

V

Input Leakage

f = 1MHz, Figure 5 13 pF

OFF

f = 1MHz, Figure 5 30 pF

ON

= 1V +2V

COM_

VCC = +2V to +3.6V 1.4

IH

VCC = +3.6V to +5.5V 1.8

VCC = +2V to +3.6V 0.5

IL

VCC = +3.6V to +5.5V 0.8

V

I

IN

= 0 or +5.5V -0.5 +0.5 µA

IN_

, RL = 600Ω 0.04 %

P-P

V

V

MAX4854

7Ω

、四路

SPST

开关，

可处理超摆幅信号

4 _______________________________________________________________________________________

____________________________________________________________

典型工作特性(续

)

(VCC= 3.0V, TA= +25°C, unless otherwise noted.)

0.2

0.4

0.6

0.8

1.0

0

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX4854 toc04

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (nA)

5.04.54.03.53.02.52.01.5 5.5

TA = -40°C

TA = +25°C

TA = +85°C

TURN-ON/TURN-OFF TIME

vs. SUPPLY VOLTAGE

MAX4854 toc05

SUPPLY VOLTAGE (V)

TURN-ON/TURN-OFF TIME (ns)

4.53.52.5

10

20

30

40

50

60

0

1.5 5.5

t

ON

t

OFF

TURN-ON/TURN-OFF TIME

vs. TEMPERATURE

MAX4854 toc06

TEMPERATURE (°C)

TURN-ON/TURN-OFF TIME (ns)

603510-15

22

24

26

28

30

32

34

20

-40 85

t

OFF

t

ON

LOGIC THRESHOLD vs. SUPPLY VOLTAGE

MAX4854 toc07

SUPPLY VOLTAGE (V)

LOGIC THRESHOLD (V)

4.53.52.5

0.8

1.0

1.2

1.4

1.6

0.6

1.5 5.5

VIN RISING

VIN FALLING

CHARGE INJECTION vs. COM VOLTAGE

MAX4854 toc08

COM VOLTAGE (V)

CHARGE INJECTION (pC)

4321

10

20

30

0

05

VCC = 3V

VCC = 5V

LEAKAGE CURRENT vs. TEMPERATURE

MAX4854 toc09

TEMPERATURE (°C)

LEAKAGE CURRENT (nA)

6035-15 10

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

0

-40 85

COM ON-LEAKAGE

COM OFF-LEAKAGE

FREQUENCY RESPONSE

MAX4854 toc10

FREQUENCY (MHz)

FREQUENCY RESPONSE (dB)

100101

-80

-60

-40

-20

0

20

-100

0.1 1000

ON-RESPONSE

OFF-RESPONSE

CROSSTALK

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

MAX4854 toc11

FREQUENCY (Hz)

THD (%)

10k1k100

0.1

10 100k

1

0.01

RL = 600Ω

SWITCH PASSING SIGNALS

ABOVE SUPPLY VOLTAGE

MAX4854 toc12

V

NC

2V/div

0V

V

COM

0V

200µs/div

VCC = 3.0V