MAXIM MAX4737, MAX4738, MAX4739 Technical data

General Description

The MAX4737/MAX4738/MAX4739 low-voltage, low onresistance (RON), quad single-pole/single throw (SPST) analog switches operate from a single +1.8V to +5.5V supply. These devices are designed for USB 1.1 and audio switching applications.

The MAX4737/MAX4738/MAX4739 feature 4.5Ω R

ON

(max) with 1.2Ω flatness and 0.4Ω matching between channels. These new switches feature guaranteed operation from +1.8V to +5.5V and are fully specified at 3V and 5V. These switches offer break-before-make switching (1ns) with tON<80ns and t

OFF

<40ns at +2.7V. The digital logic inputs are +1.8V logic compatible with a +2.7V to +3.6V supply.

These switches are packaged in a chip-scale package (UCSP™), significantly reducing the required PC board area. The chip occupies only a 2mm ✕ 2mm area and has a 4 ✕ 4 bump array with a bump pitch of 0.5mm. These switches are also available in a 14-pin TSSOP package.

Applications

Battery-Operated Equipment

Audio/Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Data-Acquisition Systems

Communications Circuits

Features

♦ USB 1.1 Signal Switching ♦ 2ns (max) Differential Skew ♦ -3dB Bandwidth: >300MHz ♦ Low 20pF On-Channel Capacitance

♦ Low R

ON

4.5Ω (max) (+3V Supply) 3Ω (max) (+5V Supply)

♦ 0.4Ω (max) R

ON

Match (+3V Supply)

♦ 1.2Ω (max) R

ON

Flatness (+3V Supply)

♦ <0.5nA Leakage Current at +25°C ♦ High Off-Isolation: -55dB (10MHz) ♦ Low Crosstalk: -80dB (10MHz) ♦ Low Distortion: 0.03% ♦ +1.8V CMOS-Logic Compatible ♦ Single-Supply Operation from +1.8V to +5.5V ♦ Rail-to-Rail®Signal Handling

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2633; Rev 0; 10/02

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.

PART

TEMP RANGE

PIN/BUMP-

TOP

MARK

MAX4737EUD

14 TSSOP

—

MAX4737EBE-T*

4737

MAX4738EUD

14 TSSOP

—

MAX4738EBE-T*

4738

MAX4739EUD

14 TSSOP

—

MAX4739EBE-T*

4739

C

D

B

A

1234

IN2

COM2

COM1

NO2

IN3

V+

NO1

NO3

GND

IN1

COM3

COM4

NO4

IN4

TOP VIEW (BUMPS SIDE DOWN)

MAX4737

C

D

B

A

1234

IN2

COM2

COM1

NC2

IN3

V+

NC1

NC3

GND

IN1

COM3

COM4

NC4

IN4

MAX4738

C

D

B

A

1234

IN2

COM2

COM1

NC2

IN3

V+

NO1

NO3

GND

IN1

COM3

COM4

NC4

IN4

MAX4739

IN_ LOW HIGH

NO_ OFF

ON

NC_

ON

OFF

UCSP UCSP UCSP

Pin Configurations/Functional Diagrams/Truth Tables

UCSP is a trademark of Maxim Integrated Products, Inc. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

Note: UCSP package requires special solder temperature profile described in the Absolute Maximum Ratings section.

*UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. See the UCSP reliability notice in the UCSP Reliability section of this data sheet for more information.

查询MAX4737EBE-T供应商

PACKAGE

-40°C to +85°C

16 UCSP-16

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +2.7V to +3.6V, VIH= +1.4V, VIL= +0.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3.0V,

T

A

= +25°C, unless otherwise noted.) (Notes 3, 4)

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.

(All Voltages Referenced to GND)

V+, IN_...................................................................-0.3V to +6.0V

COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)

Continuous Current COM_, NO_, NC_ ...........................±100mA

Peak Current COM_, NO_, NC_

(pulsed at 1ms, 10% duty cycle)................................±200mA

Continuous Power Dissipation (T

A

= +70°C)

14-Pin TSSOP (derate 6.3mW/°C above +70°C) .........500mW

16-Bump UCSP (derate 8.3mW/°C above +70°C) ......659mW

ESD Method 3015.7 .............................................................>2kV

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

Bump Temperature (soldering) (Note 2)

Infrared (15s) ...............................................................+220°C

Vapor Phase (60s) .......................................................+215°C

Note 1: Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maxi-

mum current rating.

Note 2: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device

can be exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry standard specification, JEDEC 020A, paragraph 7.6, table 3 for IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed.

)

Analog Signal Range

ANALOG SWITCH

On-Resistance (Note 5) R

On-Resistance Match Between Channels (Notes 5, 6)

On-Resistance Flatness (Note 7) R

NO_, NC_ Off-Leakage Current (Note 8)

COM_ Off-Leakage Current (Note 8)

COM_ On-Leakage Current (Note 8)

PARAMETER SYMBOL CONDITIONS T

V

,

COM_

V

, V

NO_

NC_

V+ = 2.7V, I

ON

∆R

ON

FLAT(ON

I

NO_(OFF

I

NC_(OFF

I

C OM_( OFF)

,

or V

V

NO_

V+ = 2.7V, I

or V

V

NO_

V+ = 2.7V, I V

or V

NO_

V+ = 3.6V, V

or V

V

NO_

V+ = 3.6V, V V

or V

NO_

V+ = 3.6V, V

I

COM_(ON

V

NO_

or V

floating

NC_

= 10mA;

COM_

= 1.5V

NC_

= 10mA;

COM_

= 1.5V

NC_

= 10mA;

COM_

= 1.0V, 1.5V, 2.0V

NC_

= 0.3V, 3.3V;

COM_

= 3.3V, 0.3V

NC_

= 0.3V, 3.3V;

COM_

= 3.3V, 0.3V

= 0.3V, 3.3V;

COM_

= 0.3V, 3.3V, or

NC_

A

MIN TYP MAX UNITS

0V+V

+25°C 3.0 4.5

T

to

MIN

T

MAX

5

+25°C 0.1 0.4

T

to

MIN

T

MAX

0.5

+25°C 0.6 1.2

T

to

MIN

T

MAX

1.5

+25°C -0.5 +0.01 +0.5

T

to

MIN

T

MAX

-1 +1

+25°C -0.5 +0.01 +0.5

to

T

MIN

T

MAX

-1 +1

+25°C -1 +0.01 +1

to

T

MIN

T

MAX

-2 +2

Ω

nA

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)

(V+ = +2.7V to +3.6V, VIH= +1.4V, VIL= +0.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3.0V,

T

A

= +25°C, unless otherwise noted.) (Notes 3, 4)

)

PARAMETER SYMBOL CONDITIONS T

DYNAMIC CHARACTERISTICS

V

, V

Turn-On Time t

Turn-Off Time t

Break-Before-Make Time Delay (MAX4739 Only) (Note 8)

Skew (Note 8) t

OFF

t

BBM

SKEW

Charge Injection Q

ON

NO_

= 300Ω, CL = 35pF, Figure 1

R

L

V

, V

NO_

= 300Ω, CL = 35pF, Figure 1

R

L

V

, V

NO_

R

= 300Ω, CL = 35pF, Figure 2

L

RS = 39Ω, CL = 50pF, Figure 3

V

GEN

= 1.0nF, Figure 4

C

L

f = 10MHz; V

= 50Ω, CL = 5pF, Figure 5a

R

Off-Isolation (Note 9) V

ISO

L

f = 1MHz; V

= 50Ω, CL = 5pF, Figure 5a

R

L

f = 10MHz; V R

= 50Ω, CL = 5pF, Figure 5b

Crosstalk (Note 10) V

On-Channel -3dB Bandwidth BW

CT

L

f = 1MHz; V R

= 50Ω, CL = 5pF, Figure 5b

L

Signal = 0dBm, C in and out, Figure 5a

Total Harmonic Distortion THD RL = 600Ω +25°C 0.03 %

C

NO_, NC_ Off-Capacitance

NO_(OFF

C

NC_(OFF

Switch On-Capacitance C

ON

,

f = 1MHz, Figure 6 +25°C9 pF

f = 1MHz, Figure 6 +25°C15 pF

DIGITAL I/O

Input Logic High Voltage V

Input Logic Low Voltage V

Input Leakage Current I

IH

IL

IN

V+ = 3.6V, V

NC_

= 2V, R

= 1.5V;

GEN

, V

NO_

, V

NO_

, V

NO_

, V

NO_

= 0 or 5.5V

IN_

A

MIN TYP MAX UNITS

+25°C4080

T

to

MIN

T

MAX

100

+25°C2040

T

to

MIN

T

MAX

50

+25°C8

T

to

= 0Ω,

= 1V

NC_

= 1V

NC_

= 1V

NC_

= 1V

NC_

= 5pF, 50Ω

L

P-P

MIN

T

MAX

T

to

MIN

T

MAX

+25°C5 pC

;

P-P

+25°C

;

P-P

+25°C

;

+25°C 300 MHz

T

to

MIN

T

MAX

T

to

MIN

T

MAX

T

to

MIN

T

MAX

1

0.15 2 ns

-55

-80

-110

1.4 V

0.5 V

-0.1 +0.1 µA

ns

dB

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +4.2V to +5.5V, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +5.0V,

T

A

= +25°C, unless otherwise noted.) (Notes 3, 4)

)

),

)

ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)

(V+ = +2.7V to +3.6V, VIH= +1.4V, VIL= +0.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +3.0V,

T

A

= +25°C, unless otherwise noted.) (Notes 3, 4)

PARAMETER SYMBOL CONDITIONS T

SUPPLY

Supply Voltage Range V+

Positive Supply Current I+ V+ = 5.5V, V

= 0V or V+

IN_

A

T

MIN

T

MAX

T

MIN

T

MAX

Analog Signal Range

PARAMETER SYMBOL CONDITIONS T

V

,

COM_

V

, V

NO_

NC_

ANALOG SWITCH

ON

V+ = 4.2V; I

or V

V

NO_

V+ = 4.2V; I

or V

V

NO_

On-Resistance (Note 5) R

On-Resistance Match Between Channels (Notes 5, 6)

∆R

ON

On-Resistance Flatness (Note 7) R

NO_, NC_ Off-Leakage Current (Note 8)

COM_ Off-Leakage Current (Note 8)

COM_ On-Leakage Current (Note 8)

FLAT(ON

I

NO_(OFF

I

NC_(OFF

I

COM_ (OFF

I

COM_(ON

DYNAMIC CHARACTERISTICS

Turn-On Time t

Turn-Off Time t

ON

OFF

V+ = 4.2V; I V

or V

NO_

V+ = 5.5V; V

or V

V

NO_

V+ = 5.5V; V

V

or V

NO_

V+ = 5.5V; V V

or V

NO_

floating

V

, V

NO_

R

= 300Ω, CL = 35pF, Figure 1

L

V

, V

NO_

= 300Ω, CL = 35pF, Figure 1

R

L

NC_

= 10mA;

COM_

= 3.5V

NC_

= 10mA;

COM_

= 3.5V

NC_

= 10mA;

COM_

= 1.0V, 2.0V, 3.5V

NC_

= 1.0V, 4.5V;

COM_

= 4.5V, 1.0V

NC_

= 1V, 4.5V;

COM_

= 4.5V, 1V

NC_

= 1.0V, 4.5V;

COM_

= 1.0V, 4.5V, or

NC_

= 3.0V;

A

T

MIN

T

MAX

+25°C 1.7 3.0

T

MIN

T

MAX

+25°C 0.1 0.3

T

MIN

T

MAX

+25°C 0.4 1.2

T

MIN

T

MAX

+25°C -0.5 0.01 +0.5

T

MIN

T

MAX

+25°C -0.5 0.01 +0.5

T

MIN

T

MAX

+25°C -1 0.01 +1

T

MIN

T

MAX

+25°C3080

T

MIN

T

MAX

+25°C2040

T

MIN

T

MAX

MIN TYP MAX UNITS

to

1.8 5.5 V

to

MIN TYP MAX UNITS

to

0V+V

to

-1 +1

-2 +2

to

1µA

35

0.4

1.5

Ω

nA

100

50

ns

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

(V+ = +4.2V to +5.5V, VIH= +2.0V, VIL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V+ = +5.0V,

T

A

= +25°C, unless otherwise noted.) (Notes 3, 4)

Note 3: UCSP parts are 100% tested at +25°C only, and guaranteed by design over the specified temperature range. TSSOP parts

are 100% tested at T

MAX

and guaranteed by design over the specified temperature range.

Note 4: The algebraic convention used in this data sheet is where the most negative value is a minimum and the most positive

value is a maximum.

Note 5: Guaranteed by design for UCSP parts. Note 6: ∆R

ON

= R

ON(MAX)

- R

ON(MIN)

.

Note 7: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the

specified analog signal ranges.

Note 8: Guaranteed by design. Note 9: Off-Isolation = 20log

10(VCOM

/ VNO), V

COM

= output, VNO= input to off switch.

Note 10: Between any two switches.

Break-Before-Make Time Delay (MAX4739 Only) (Note 8)

Skew (Note 8) t

DIGITAL I/O

Input Logic High Voltage V

Input Logic Low Voltage V

Input Leakage Current I

POWER SUPPLY

Power-Supply Range V+

Positive Supply Current I+ V+ = 5.5V, V

PARAMETER SYMBOL CONDITIONS T

V

, V

t

BBM

SKEW

IH

IL

IN

NO_

= 300Ω, CL = 35pF, Figure 2

R

L

RS = 39Ω, CL = 50pF, Figure 3

V+ = 5.5V, VIN_ = 0V or V+

NC_

= 3.0V;

= 0V or V+

IN_

A

+25°C8

T

MIN

T

MAX

T

MIN

T

MAX

T

MIN

T

MAX

T

MIN

T

MAX

T

MIN

T

MAX

T

MIN

T

MAX

T

MIN

T

MAX

MIN TYP MAX UNITS

to

2.0 V

to

-0.1 +0.1 µA

to

1.8 5.5 V

to

1

0.15 2 ns

ns

0.8 V

1µA

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

6 _______________________________________________________________________________________

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

10

ON-RESISTANCE vs. V

8

6

(Ω)

ON

R

4

2

0

05

V+ = 1.8V

V+ = 2.5V

V

COM

V+ = 3V

(V)

COM

V+ = 4.2V

V+ = 5V

4321

MAX4737/38/39 toc01

(Ω)

ON

R

LEAKAGE CURRENT vs. TEMPERATURE

500

V+ = 3V

400

300

COM OFF-LEAKAGE

200

LEAKAGE CURRENT (pA)

100

COM ON-LEAKAGE

1000

800

MAX4737/38/39 toc04a

600

400

LEAKAGE CURRENT (pA)

200

ON-RESISTANCE vs. V

6

V+ = 3V

5

4

TA = +25°C

3

2

1

0 3.0

TA = +85°C

V

(V)

COM

TA = -40°C

LEAKAGE CURRENT vs. TEMPERATURE

V+ = 5V

COM ON-LEAKAGE

COM OFF-LEAKAGE

COM

ON-RESISTANCE vs. V

5

V+ = 5V

MAX4737/38/39 toc02

2.52.01.51.00.5

4

3

(Ω)

ON

R

2

1

0

TA = +25°C

05

V

COM

CHARGE INJECTION vs. V

50

40

MAX4737/38/39 toc04b

30

20

CHARGE INJECTION (pC)

10

CL = 1nF V+ = 3V

TA = +85°C

(V)

CL = 1nF V+ = 5V

COM

MAX4737/38/39 toc03

TA = -40°C

4321

COM

MAX4737/38/39 toc05

0

-40 85 TEMPERATURE (°C)

603510-15

0

-40 85 TEMPERATURE (°C)

603510-15

0

05

TURN-ON/OFF TIME

SUPPLY CURRENT vs. TEMPERATURE

6

5

4

3

2

SUPPLY CURRENT (nA)

1

0

-40 85 TEMPERATURE (°C)

V+ = 5V

V+ = 3V

MAX4737/38/39 toc06

603510-15

SUPPLY CURRENT vs. LOGIC LEVEL

MAX4737/38/39 toc07

(ns)

OFF

/t

ON

t

100

80

60

40

20

0

1.5 5.5

100

80

V+ = 5V

60

40

SUPPLY CURRENT (µA)

20

0

05

V+ = 3V

4321

LOGIC LEVEL (V)

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

4321

V

(V)

COM

MAX4737/38/39 toc08

t

ON

t

OFF

4.53.52.5

TURN-ON/OFF TIME

vs. TEMPERATURE

MAX4737/38/39 toc09

TEMPERATURE (°C)

t

ON

/t

OFF

(ns)

603510-15

10

20

30

40

50

60

0

-40 85

tON, V+ = 3.0V

tON, V+ = 5.0V

t

OFF

, V+ = 5.0V

t

OFF

, V+ = 3.0V

RISE/FALL-TIME DELAY

vs. SUPPLY VOLTAGE

MAX4737/38/39 toc10

SUPPLY VOLTAGE (V)

OUTPUT RISE/FALL-TIME DELAY (ps)

4.53.52.5

0.5

1.0

1.5

2.0

2.5

3.0

0

1.5 5.5

INPUT RISE/FALL TIME = 15ns FIGURE 3, C

L

= 50pF

RISE DELAY

FALL DELAY

RISE/FALL-TIME DELAY

vs. TEMPERATURE

MAX4737/38/39 toc11

TEMPERATURE (°C)

OUTPUT RISE/FALL-TIME DELAY (ns)

603510-15

0.5

1.0

1.5

2.0

0

-40 85

INPUT RISE/FALL TIME = 15ns FIGURE 3, C

L

= 50pF

V+ = 4.2V

RISE DELAY

FALL DELAY

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

RISE TIME TO FALL TIME MISMATCH

vs. SUPPLY VOLTAGE

400

INPUT RISE/FALL TIME = 15ns FIGURE 3, C

300

= 50pF

L

RISE TIME TO FALL TIME MISMATCH

MAX4737/38/39 toc12

200

INPUT RISE/FALL TIME = 15ns FIGURE 3, C V+ = 4.2V

150

vs. TEMPERATURE

= 50pF

L

MAX4737/38/39 toc13

400

300

SKEW vs. SUPPLY VOLTAGE

INPUT RISE/FALL TIME = 15ns FIGURE 3, C

= 50pF

L

MAX4737/38/39 toc14

200

MISMATCH (ps)

100

0

1.5 5.5

SUPPLY VOLTAGE (V)

100

MISMATCH (ps)

50

4.53.52.5

0

SKEW vs. TEMPERATURE

200

INPUT RISE/FALL TIME = 15ns FIGURE 3, C V+ = 4.2V

150

100

SKEW (ps)

50

0

-40 85

= 50pF

L

TEMPERATURE (°C)

-40 85 TEMPERATURE (°C)

603510-15

FREQUENCY RESPONSE

20

V+ = 3V/5V

0

MAX4737/38/39 toc15

603510-15

-20

-40

-60

ON-LOSS (dB)

-80

-100

-120

-140

ON-LOSS

OFF-ISOLATION

0.0001 100

200

SKEW (ps)

100

0

1.5 5.5

10.01

FREQUENCY (MHz)

4.53.52.5

SUPPLY VOLTAGE (V)

MAX4737/38/39 toc16

CROSSTALK

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

8 _______________________________________________________________________________________

Pin Description

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

MAX4737/38/39 toc17

FREQUENCY (Hz)

THD (%)

10k1k100

0.1

10 100k

1

0.01

V+ = 3V R

L

= 600Ω

LOGIC THRESHOLD vs. SUPPLY VOLTAGE

MAX4737/38/39 toc18

SUPPLY VOLTAGE (V)

LOGIC THRESHOLD (V)

5.04.54.03.53.02.52.0

0.4

0.8

1.2

1.6

2.0

0

1.5 5.5

V

TH+

V

TH-

MAX4737

UCSP TSSOP UCSP TSSOP UCSP TSSOP

D2 1 ——D2 1 NO1 Analog-Switch Normally Open Terminal

——D2 1 ——NC1 Analog-Switch Normally Closed Terminal

D1 2 D1 2 D1 2 COM1 Analog-Switch Common Terminal

C1 3 —— — —NO2 Analog-Switch Normally Open Terminal

——C1 3 C1 3 NC2 Analog-Switch Normally Closed Terminal

B1 4 B1 4 B1 4 COM2 Analog-Switch Common Terminal

A1 5 A1 5 A1 5 IN2 Logic-Control Digital Input

A2 6 A2 6 A2 6 IN3 Logic-Control Digital Input

B3 7 B3 7 B3 7 GND Ground. Connect to digital ground.

A3 8 —— A3 8 NO3 Analog-Switch Normally Open Terminal

—— A3 8 ——NC3 Analog-Switch Normally Closed Terminal

A4 9 A4 9 A4 9 COM3 Analog-Switch Common Terminal

B4 10 B4 10 B4 10 COM4 Analog-Switch Common Terminal

C4 11 —— ——NO4 Analog-Switch Normally Open Terminal

—— C4 11 C4 11 NC4 Analog-Switch Normally Closed Terminal

D4 12 D4 12 D4 12 IN4 Logic-Control Digital Input

D3 13 D3 11 D3 11 IN1 Logic-Control Digital Input

C2 14 C2 14 C2 14 V+ Positive Analog Supply

MAX4738 MAX4739

NAME

FUNCTION

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

_______________________________________________________________________________________ 9

Detailed Description

The MAX4737/MAX4738/MAX4739 quad SPST analog switches operate from a single +1.8V to +5.5V supply. The MAX4737/MAX4738/MAX4739 offer excellent AC characteristics, <0.5nA leakage current, less than 1ns differential skew, and 15pF on-channel capacitance. All of these devices are CMOS-logic compatible with V+ to GND signal handling capability.

The MAX4737/MAX4738/MAX4739 are USB-complaint switches that provide 4.5Ω (max) on-resistance and 15pF on-channel capacitance to maintain signal integrity. At 12Mbps (USB full-speed data rate specification), the MAX4737/MAX4738/MAX4739 introduce less than 2ns propagation delay between input and output signals and less than 0.5ns change in skew for the output signals (see Figure 4).

The MAX4737 has four normally open (NO) switches, the MAX4738 has four normally closed (NC) switches, and the MAX4739 has two NO switches and two NC switches.

Applications Information

Digital Control Inputs

The MAX4737/MAX4738/MAX4739 logic inputs accept up to +5.5V regardless of supply voltage. For example, with a +3.3V supply, IN_ can be driven low to GND and high to +5.5V allowing for mixing of logic levels in a system. Driving the control logic inputs rail-to-rail minimizes power consumption. For a +1.8V supply voltage, the logic thresholds are 0.5V (low) and 1.4V (high); for a +5V supply voltage, the logic thresholds are 0.8V (low) and 2.0V (high).

Analog Signal Levels

Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in on-resistance (see Typical Operating Characteristics). The switches are bidirectional, so the NO_, NC_, and COM_ pins can be either inputs or outputs.

Power-Supply Bypassing

Power-supply bypassing improves noise margin and prevents switching noise from propagating from the V+ supply to other components. A 0.1µF capacitor connected from V+ to GND is adequate for most applications.

UCSP Package Considerations

For general UCSP package information and PC layout considerations, please refer to the Maxim Application Note (Wafer-Level Chip-Scale Package).

UCSP Reliability

The chip-scale package (UCSP) represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP package. Performance through Operating Life Test and Moisture Resistance remains uncompromised as it is primarily determined by the wafer-fabrication process.

Mechanical stress performance is a greater consideration for a UCSP package. UCSPs are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be considered. Information on Maxim’s qualification plan, test data, and recommendations are detailed in the UCSP application note, which can be found on Maxim’s website at www.maxim-ic.com.

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

10 ______________________________________________________________________________________

Test Circuits/Timing Diagrams

Figure 1. Switching Time

Figure 2. Break-Before-Make Interval

MAX4737/ MAX4738/

MAX4739

LOGIC

INPUT

NO_

V

N_

OR NC_

IN_

GND

C

INCLUDES FIXTURE AND STRAY CAPACITANCE.

L

V

= V

OUT

COM

(

RL - R

V+

COM_

R

L

R

L

)

ON

V

OUT

C

L

LOGIC INPUT

SWITCH

OUTPUT

GND

V+

NO_

NC_

V

OUT2

R

C

L2

V

OUT1

R

L1 C

L1

MAX4739

V

COM1

V

COM2

LOGIC INPUT

COM1

COM2

IN_

C

INCLUDES FIXTURE AND STRAY CAPACITANCE.

L

V

IH

V

IL

0V

LOGIC INPUT

SWITCH

OUTPUT 1

(V

OUT1

SWITCH

OUTPUT 2

(V

OUT2

50%

t

OFF

V

OUT

0.9 x V

0UT

t

ON

LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.

V

IH

V

IL

)

0V

)

0V

50%

t

D

0.9 x V

0UT1

0.9 x V

t

D

OUT

0.9 x V

OUT2

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

______________________________________________________________________________________ 11

Figure 3. Input/Output Skew Timing Diagram

Test Circuits/Timing Diagrams (continued)

TxD+

TxD-

t

ri

90%

t

50%

fi

ro

50%

fo

t

skew_i

10%

90%

t

skew_o

10%

Rs = 39Ω

= 50pF

C

L

A

R

s

A-

R

s

B

B-

C

L

C

L

INPUT A

INPUT A-

OUTPUT B

OUTPUT B-

10%

90%

10%

90%

|

DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS.

|t

ro - tri

|t

|

DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS.

fo - tfi

|t

|

CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS.

skew_o

|t

|

CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.

skew_i

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

12 ______________________________________________________________________________________

Figure 4. Charge Injection

Figure 5a. On-Loss and Off-Isolation

Figure 5b. Crosstalk Test Circuit

Figure 6. Channel Off/On-Capacitance

Test Circuits/Timing Diagrams (continued)

Chip Information

TRANSISTOR COUNT: 361

PROCESS: CMOS

MAX4737/ MAX4738/

MAX4739

V

GEN

R

GEN

NC_

OR NO_

GND

IN_

V+

COM_

TO V

V

IL

IH

V

OUT

C

L

V

OUT

IN

OFF

IN

LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.

Q = (∆V

ON

OUT

)(CL)

∆V

OUT

OFF

C = 0.1µF

SIGNAL

GENERATOR

0dBm

50Ω*

ANALYZER

*USED ONLY FOR OFF-ISOLATION TEST.

V+

NC_ or NO_

COM_

C = 0.1µF

NC_ or NO_

GND

V+

MAX4737/ MAX4738/

MAX4739

IN_

MAX4737/

SIGNAL GENERATOR

0V OR V+

ANALYZER

MAX4738/

CAPACITANCE

METER

f = 1MHz

MAX4739

COM_

GND

IN_

0V OR V+

0dBm

0V TO V+

C = 0.1µF

COM1

IN1

NO2

V+

MAX4737/ MAX4738/

MAX4739

GND

V+

NO1

IN2

COM2

50Ω

0V OR V+

N.C.

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

______________________________________________________________________________________ 13

Pin Configurations/Functional Diagrams/Truth Tables (continued)

TOP VIEW

1

NO1

COM1

2

3

NO2

4

COM2

5

IN2

IN3

6

7

GND

INPUT SWITCH STATE

LOW

HIGH

MAX4737

TSSOP

OFF

ON

MAX4738

14

V+

IN1

13

12

IN4

11

NO4

10

COM4

COM3

9

8

NO3

NC1

COM1

NC2

COM2

GND

IN2

IN3

1

2

3

4

5

6

7

14

V+

IN1

13

12

IN4

11

NC4

10

COM4

COM3

9

8

NC3

NO1

COM1

NC2

COM2

IN2

IN3

GND

TSSOP

INPUT SWITCH STATE

LOW

HIGH

ON

OFF

INPUT NO1, NO3

LOW HIGH

MAX4739

1

2

3

4

5

6

7

14

V+

IN1

13

12

IN4

11

NC4

10

COM4

COM3

9

8

NO3

TSSOP

NC2, NC4

OFF ON

ON

OFF

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

14 ______________________________________________________________________________________

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)

16L,UCSP.EPS

MAX4737/MAX4738/MAX4739

4.5

Ω

Quad SPST Analog Switches in UCSP

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)

TSSOP4.40mm.EPS

This datasheet has been download from:

www.datasheetcatalog.com

Datasheets for electronics components.

MAXIM MAX4737, MAX4738, MAX4739 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual