MAXIM MAX4996, MAX4996L User Manual

General Description

The MAX4996/MAX4996L triple DPDT analog switches operate from a single +2.5V to +5.5V supply, and feature 2.0Ω (typ) on-resistance, low 6pF (typ) on-capacitance, and low power-supply current consumption. The MAX4996/MAX4996L combine the low capacitance and low resistance necessary for high-frequency switching applications in portable electronics.

The MAX4996/MAX4996L have three logic inputs to control the switches in pairs. The MAX4996 has an active-high enable input (EN) to disable the switches, while the MAX4996L has an active-low enable input (EN) to disable the switches. The enable input decreas- es the supply current and also places the COM_ outputs in a high-impedance state.

The MAX4996/MAX4996L feature a 5µA (max) supplycurrent consumption when the logic inputs are not rail-to-rail. This feature is especially valuable in applications where direct interface to low-voltage processors is necessary.

The MAX4996/MAX4996L are available in a spacesaving 24-pin (3.5mm x 3.5mm) TQFN package and operate over the -40°C to +85°C temperature range.

Applications

SD Card Switching

USB Signal Switching

UART Signal Switching

Cell Phones

PDAs

GPS

Portable Media Players (PMP)

Features

♦ Multiplex SD2.0/SDIO Interfaces

♦ Low Power Consumption (2µA max)

♦ +2.5V to +5.5V Supply Voltage Range

♦ Rail-to-Rail Signal Handling

♦ Low-Capacitance Switches, 6pF (typ)

♦ Low On-Resistance, 2Ω (typ)

♦ Excellent On-Resistance Flatness Over the Range

of 0V to V

CC

♦ Wide -3dB Bandwidth, 670MHz

♦ Small 24-Pin TQFN (3.5mm x 3.5mm)

MAX4996/MAX4996L

Triple DPDT, Low-Capacitance Data Switches

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-4036; Rev 0; 2/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Typical Operating Circuit appears at end of data sheet.

PART

PINPACKAGE

PAC KA GE

CODE

MAX4996ETG+ 24 TQFN-EP* T243A3-1

M A X4 9 9 6 L E TG+ 24 TQFN-EP* T243A3-1

Note: All devices operate over the -40°C to +85°C extended

temperature range. +Denotes a lead-free package.

*

EP = Exposed paddle.

Pin Configuration/Truth Tables

TOP VIEW

COM1

COM2

18

17

NO1

19

*EP

20

NO2

21

NO3

NO4

22

23

NO5

24

NO6

+

*CONNECT EXPOSED PADDLE TO GROUND.

MAX4996

MAX4996L

1

2

CB12

CB34

3.5mm x 3.5mm

(EN) FOR MAX4996L ONLY.

COM3

16

3

CB56

TQFN

EN (EN)

15

4

COM4

CC

V

14

5

COM5

GND

13

6

COM6

NC1

12

11

NC2

10

NC3

9

NC4

8

NC5

7

NC6

MAX4996/MAX4996L

OFF

ON

OFF

ON

OFF

ON

NC1/NC2

ON

OFF

ON

OFF

NC5/NC6

ON

OFF

NO1/NO2

CB12

LOW HIGH

NO3/NO4 NC3/NC4

CB34

LOW HIGH

CB56

NO5/NO6

LOW HIGH

TRUTH TABLES

MAX4996

EN

CB_

HIGH

LOW

HIGH

LOW X OFF OFF

MAX4996L

EN

CB_

LOW

HIGH

HIGH X OFF OFF

NO_

OFF

ON

NO_

OFF

ON

NC_

ON

OFF

NC_

ON

OFF

MAX4996/MAX4996L

Triple DPDT, Low-Capacitance Data Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +2.5V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 2.8V, TA= +25°C.) (Notes 2, 3)

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.

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations see www.maxim-ic.com/thermal-tutorial

.

V

CC

to GND ...........................................................-0.3V to +6.0V

EN, EN, CB_ ..........................................................-0.3V to +6.0V

All Other Pins to GND ..................................-0.3V to V

CC

+ 0.3V

Continuous Current

NO_, NC_, COM_ .......................................................±150mA

Peak Current NO_, NC_, COM_

(pulsed at 1ms, 50% Duty Cycle)...............................±300mA

(pulsed at 1ms, 10% Duty Cycle)...............................±450mA

ESD per Human Body Model...............................................±2kV

Continuous Power Dissipation (T

A

= +70°C)

24-Pin TQFN (derate 20.8mW/°C

above +70°C).............................................................1228mW

Thermal Resistance (Note 1)

θ

JA

.............................................................................65.1°C/W

θ

JC

...............................................................................5.4°C/W

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

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

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

Lead Temperature (soldering) .........................................+300°C

)

ANALOG SWITCH

Analog Signal Range

On-Resistance R

On-Resistance Match Between Channels

On-Resistance Flatness R

Off-Leakage Current

On-Leakage Current I

-3dB Bandwidth BW RL = RS = 50Ω, CL = 5pF, Figure 4 670 MHz

Off-Isolation V

C r osstal kV

LOGIC INPUTS

Input Logic High V

Input Logic Low V

Input Leakage Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

,

COM

, VNC_

V

NO

V

ON

ΔR

ON

FLAT

I

_

COM

(OFF)

COM_ (ON

_= 0 to V

C OM

VCC = 2.8V, I V

= 1.5V or V

NO_

VCC = 2.5V, I V

_= 0 to V

COM

VCC = 4V , V V

, V

N O_

N C

VCC = 5.5V , V V

, V

N O

N C

VCC = 5.5V , V V

_, V

N O

N C

, I

C C

COM

C OM

_= 25m A24Ω

C OM

_= 25mA;

= 1.5V (Note 4)

NC _

_= 25mA;

(Note 5)

CC

_ = 0, 4V ;

_ = 4V , 0

_ = 5.5V ;

C OM

w i th 50µA sink cur r ent to GN D

_ = 0, 5.5V ;

C OM

_unconnected

f = 1MHz, VNO_, VNC_ = 0;

= 5pF, RL = RS = 50Ω,

C

ISO

L

Figure 4 (Note 6)

CT

LEAK

f = 1MHz, VNO_, VNC_ = 0;

= RS = 50Ω, Figure 4 ( N ote 7)

R

L

IH

IL

0 ≤ V ≤ VIL and VIH ≤ V ≤ VCC; V

= 5.5V

CC

0V

CC

0.1 0.2 Ω

0.2 0.5 Ω

-250 +250 nA

180 µA

-250 +250 nA

-60 dB

-120 dB

1.4 V

0.5 V

-250 +250 nA

V

MAX4996/MAX4996L

Triple DPDT, Low-Capacitance Data Switches

_______________________________________________________________________________________ 3

Note 2: The algebraic convention is used. The most negative value is shown in the minimum column. Note 3: Parts are 100% tested at T

A

= +25°C. Limits across the full temperature range are guaranteed by correlation and design.

Note 4: ΔR

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[VCOM_

/ (V

NO_

or V

NC_

)], V

COM_

= output, V

NO_

or V

NC_

= input to off switch.

Note 7: Between any two switches.

)

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.5V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 2.8V, TA= +25°C.) (Notes 2, 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SWITCH DYNAMICS

Turn-On Time t

Turn-Off Time t

Break-Before-Make Interval t

Output Skew Between Switches t

C

NO or NC Off-Capacitance

COM Off-Capacitance

COM On-Capacitance

NO_ (OFF

CNC_

C

Operating Power-Supply Range V

Shutdown S up p l y C ur r ent

VCC S up p l y C ur rent I

Increase in Supply Current with

/ VEN Voltage

V

CB

ON

OFF

BBM

SKEW

COM

(OFF)

COM

(ON)

CC

VCC = 2.7V, VNO_ or VNC_ = 1.5V;

= 50Ω, CL = 35pF, Figure 1

R

L

VCC = 2.7V, VNO_ or VNC_ = 1.5V;

= 50Ω, CL = 35pF, Figure 1

R

L

VCC = 2.7V ; VNO_, or VNC_ = 1.5V;

= 50Ω, CL = 35pF, Figure 2

R

L

10 µs

RL = RS = 50Ω, Figure 3 40 Ps

(OFF

_

f = 10MHz, V signal = 500mV

BIAS

= 0V,

, Figure 5

P-P

= 0V,

, Figure 5

P-P

= 0V,

, Figure 5

P-P

2.5 pF

4pF

6pF

2.5 5.5 V

V

= 0 (MAX4996), VEN = V

EN

(MAX4996L)

VCB_ = 0 or VCC; V

= VCC (MAX4996);

EN

= 0 (MAX4996L)

V

EN

0 ≤ V

_ ≤ VIL or VIH ≤ VCB_ ≤ V

CB

or 0 ≤ V

≤ VIL or VIH ≤ V

EN

CC

VCC = 2.8V 1 2

= 5.5V 5 10

V

CC

≤ V

EN

CC

0.1 0.5 µA

ESD Protection Human Body Model ±2 kV

100 µs

6µs

5µA

µA

MAX4996/MAX4996L

Triple DPDT, Low-Capacitance Data Switches

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3V, TA= +25°C, unless otherwise noted.)

3.0

2.5

(Ω)

ON

R

VCC = 2.5V

2.0

VCC = 3.0V

1.5

VCC = 5.0V

1.0 053142

V

COM

ON-RESISTANCE vs. V

VCC = 2.7V

(V)

COM

MAX4996/6L toc01

3.0

2.5

(Ω)

2.0

ON

R

1.5

1.0

COM_ON LEAKAGE CURRENT

vs. OVERTEMPERATURE

45

40

35

30

(nA)

25

20

COM_ON

I

15

10

5

0

TA = -40°C TO +85°C

0231

V

(V)

COM

ON-RESISTANCE vs. V

0231

TA = +85°C

= +25°C

T

A

T

= -40°C

A

V

COM

MAX4996/6L toc04

COM

(V)

MAX4996/6L toc02

(Ω) R

2.0

1.5

1.0

ON

0.5

0

SUPPLY CURRENT vs. SUPPLY VOLTAGE

5

4

3

(μA)

CC

I

2

1

0

0462

VCC (V)

ON-RESISTANCE vs. V

VCC = 5.0V

053142

MAX4996/6L toc05

TA = +85°C

TA = +25°C

TA = -40°C

V

(V)

COM

MAX4996/6L toc03

QUIESCENT SUPPLY CURRENT

3.5

vs. TEMPERATURE

3.0

2.5

2.0

(μA)

CC

I

1.5

1.0

0.5

0

-40 10 60-15 35 85

VCC = 5.0V

VCC = 3.0V

TEMPERATURE (°C)

MAX4996/6L toc06

LOGIC THRESHOLD vs. SUPPLY VOLTAGE

2.0

1.5

V

IH

1.0

THRESHOLD (V)

0.5

0

1.5 2.5 3.5 4.5 5.52.0 3.0 4.0 5.0 6.0 VCC (V)

V

IL

MAX4996/6L toc07