EVALUATION KIT AVAILABLE

MAX4968B/MAX4968C

16-Channel, Linear, High-Voltage Analog

Switches in BGA Package

General Description

The MAX4968B/MAX4968C are 16-channel, high-lineari-

ty, high-voltage (HV), bidirectional SPST analog switches

with 18Ω (typ) on-resistance. The devices are ideal

for use in applications requiring high-voltage switching

controlled by a low-voltage control signal, such as

ultrasound imaging and industrial printing. The MAX4968C

provides integrated 40kΩ bleed resistors on each switch

terminal to discharge capacitive loads. Using HVCMOS

technology, these switches combine high-voltage bilateral

MOS switches and low-power CMOS logic to provide

efficient control of high-voltage analog signals.

In typical ultrasound applications, the MAX4968B/

MAX4968C do not require a dedicated HV supply, which

implies a significant simplification of system requirements.

The negative voltage supply can be shared with the

transmitter and the positive voltage supply is typically

+12V.

The devices are available in a 64-bump BGA package

and are specified over the -40NC

to +85NC extended

temperature range.

Features

● Save Space—Optimized for High-Channel-Count

Systems

•

Small BGA Package

• 16 Integrated Channels

● High Performance—Designed to Enhance Image

Quality

•

True Linear Switching—R

ON

Flatness Guaranteed

in Entire Input Range 46dB (typ) THD

•

Low Parasitic Capacitance Guarantees High

Bandwidth

•

Low-Charge Injection and Voltage Spiking

•

2nd Harmonic Distortion < -45dB at 2MHz ± 90V

Pulse Analog Class AB

•

DC to 30MHz Small-Signal Analog Bandwidth

(C

LOAD

= 200pF)

•

500kHz to 20MHz High-Signal Analog Bandwidth

(C

LOAD

= 200pF)

•

Extended Input Range Up to 210V

P-P

•

-68dB (Typ) Off-Isolation at 5MHz (50Ω)

●

Increased Flexibility Saves Design Time

•

No Dedicated High-Voltage Supplies Required

• Daisy-Chainable Serial Interface

•

Asynchronous Set/Clear Input to Program All

Switches Without Need for SPI

● Superior Reliability

•

Latch-Free SOI HVCMOS Process Technology for

High Performance and Robustness

•

Integrated Overvoltage Protection

Applications

● Medical Ultrasound Imaging

●

Nondestructive Testing (NDT)

●

Industrial Printing

Ordering Information

appears at end of data sheet.

19-7312; Rev 0; 3/14

MAX4968B/MAX4968C

16-Channel, Linear, High-Voltage Analog Switches

in BGA Package

Absolute Maximum Ratings

(All voltages referenced to GND.)

V

DD

Logic Supply Voltage ......................................-0.3V to +6V

V

P-P

Supply Voltage .............................................-0.3V to +13V

V

NN

Negative Supply Voltage ............................+0.3V to -200V

V

CC10

Input Voltage ............ -0.3V to MAX (12V to V

P-P

+ 0.3V)

Logic Inputs Voltage (CLK, DIN,

LE,

CLR, SET) ...-0.3V to +6V

Logic Output Voltage (DOUT) ................. -0.3V to (V

DD

+ 0.3V)

Analog Signal Range (SW_) .......(V

NN

- 0.3V) to (V

NN

+ 214V)

Continuous

Power Dissipation (T

A

= +70NC)

64-bump BGA (derate 30.30mW/NC above +70NC) ..1969.7mW

Operating Temperature Range ........................... -40NC

to +85NC

Storage Temperature Range ............................

-65NC

to +150NC

Junction Temperature ..................................................... +150NC

Lead Temperature (soldering, 10s) ................................. +300NC

Soldering Temperature (reflow) .......................................+260NC

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.

Package Thermal Characteristics

(Note 1)

Junction-to-Ambient Thermal Resistance (B

JA

)

.............3.3NC/W

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, refer to

www.maximintegrated.com/thermal-tutorial.

Electrical Characteristics

(V

DD

= +2.37V to +5.5V, V

P-P

= +10V to +12.5V, V

NN

= 0 to -200V, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are V

DD

=

+3.3V, V

NN

= -100V, V

P-P

= +12V at T

A

= +25NC.)

(Note 2)

PARAMETER

POWER SUPPLIES

V

DD

Logic Supply Voltage

V

NN

Supply Voltage

V

P-P

Supply Voltage

V

DD

Static Current

V

DD

Dynamic Current

V

NN

Static Current

V

NN

Supply Dynamic Current

(All Channel Switching

Simultaneously)

V

P-P

Supply Static Current

V

P-P

Supply Dynamic Current

(All Channel Switching

Simultaneously)

V

CC10

Static Output Voltage

V

CC10

Dynamic Output

Voltage

V

DD

V

NN

V

P-P

I

DDS

I

DD

I

NNS

I

NN

I

PPS

I

PP

V

CC10s

V

CC10

V

DD

= +5V, f

CLK

= 5MHz,

f

DIN

= 2.5MHz

All switches remain on or off,

SW_ = GND

V

P-P

= +12V, V

NN

= -100V,

f

TURN_ON/OFF

= 50kHz, SW_ = GND

All switches remain on or off,

SW_ = GND

V

P-P

= +12V, V

NN

= -100V,

f

TURN_ON/OFF

= 50kHz, SW_ = GND

V

P-P

= +12V, all switches remain on or

off, SW_ = GND

V

P-P

= +12V, I

OUT

= 30mA

10

9.5

2.37

-200

10

12

25

100

15

4.3

75

5.4

10.5

10.25

5.5

0

12.5

50

200

25

8

160

9

V

µA

mA

µA

mA

V

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

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Maxim Integrated

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2

MAX4968B/MAX4968C

16-Channel, Linear, High-Voltage Analog Switches

in BGA Package

Electrical Characteristics (continued)

(V

DD

= +2.37V to +5.5V, V

P-P

= +10V to +12.5V, V

NN

= 0 to -200V, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

V

DD

= +3.3V, V

NN

= -100V, V

P-P

= +12V at T

A

= +25NC.)

(Note 2)

PARAMETER

SWITCH CHARACTERISTICS

Analog Dynamic Signal Range

Small-Signal

On-Resistance

Small-Signal

On-Resistance Matching

Small-Signal

On-Resistance Flatness

Output Switch Bleed Resistor

Switch-Off Leakage

Switch-Off DC Offset

Switch-On DC Offset

Switch Output Isolation Diode

Current

SWITCH DYNAMIC CHARACTERISITICS

Turn-On Time

Turn-Off Time

Maximum V

SW_

Slew Rate

Off-Isolation

Crosstalk

SW_ Off-Capacitance

SW_ On-Capacitance

Output Voltage Spike

Large-Signal Analog

Bandwidth (-3dB)

Small-Signal Analog Bandwidth

(-3dB)

Charge Injection

LOGIC LEVELS

Logic-Input Low Voltage

Logic-Input High Voltage

Logic-Output Low Voltage

V

IL

V

IH

V

OL

I

SINK

= 1mA

V

DD

-

0.75

0.4

0.75

V

t

ON

t

OFF

dV/dt

V

ISO

V

CT

C

SW_(OFF)

C

SW_ (ON)

V

SPK

f

BW_L

f

BW_S

Q

V

SW_

= +1V, R

L

= 100Ω, V

NN

= -100V,

from SET to

V

SW_

= +0.9V

V

SW_

= +1V, R

L

= 100Ω, V

NN

= -100V,

from CLR to

V

SW_

= +0.9V

C

L

= 100pF

f = 5MHz, R

L

= 50Ω

f = 5MHz, R

L

= 50Ω

f = 1MHz, small signal close to zero

R

L

= 50Ω

C

LOAD

= 200pF, 60V amplitude

sinusoidal burst, 1% duty cycle

C

LOAD

= 200pF, 100mV amplitude

sinusoidal

V

NN

= -100V, Figure 1

-150

30

50

150

20

-68

-69

8

14

+150

2

5

3.5

µs

V/ns

dB

pF

mV

MHz

pC

V

SW_

R

ONS

ΔR

ONS

R

ONF

R

INT

I

SW_(OFF)

AC operation only, f > 500kHz

V

P-P

= +12V, V

NN

= -100V, V

SW_

= 0V,

I

SW_

= 5mA

V

P-P

= +12V, V

NN

= -100V,

I

SW_

= 5mA

AC measured, f

SW

= 0.5MHz,

V

SW

= 80V

P-P

, R

LOAD

= 50Ω,

V

P-P

= +12V, V

NN

= -100V

MAX4968C only

V

SW

= 0V, switch off (MAX4968B only)

R

L

= 100kΩ on both sides

R

L

= 100kΩ on both sides

300ns pulse width, 2% duty cycle

-15

3.0

30

V

NN

18

3

2

40

0

50

1

+15

V

NN

+210

34

V

Ω

%

kΩ

ΩA

mV

A

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

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Maxim Integrated

│

3

MAX4968B/MAX4968C

16-Channel, Linear, High-Voltage Analog Switches

in BGA Package

Electrical Characteristics (continued)

(V

DD

= +2.37V to +5.5V, V

P-P

= +10V to +12.5V, V

NN

= 0 to -200V, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

V

DD

= +3.3V, V

NN

= -100V, V

P-P

= +12V at T

A

= +25NC.)

(Note 2)

PARAMETER

Logic-Output High Voltage

Logic-Input Capacitance

Logic-Input Leakage

Pulldown Resistor in SET Pin

CLK Frequency

DIN-to-CLK Setup Time

DIN-to-CLK Hold Time

CLK to LE Setup Time

LE

Low Pulse Width

CLR High Pulse Width

SET High Pulse Width

CLK Rise and Fall Times

CLK to DOUT Delay

SYMBOL

V

OH

C

IN

I

IN

R

PULLDOWN

f

CLK

t

DS

t

DH

t

CS

t

WL

t

WC

t

WS

t

R

, t

F

t

DO

V

DD

= +5V ±10%, C

DOUT

= 15pF

V

DD

= +2.5V ±5%, C

DOUT

= 15pF

4

28

12

16

50

28

45

-1

65

100

CONDITIONS

I

SOURCE

= 1mA

MIN

V

DD

-

0.4

5

+1

140

25

TYP

MAX

UNITS

V

pF

µA

kΩ

MHz

ns

TIMING CHARACTERISTICS (Figure 2)

Note 2:

All devices are 100% tested at T

A

= +85NC.

Limits over the operating temperature range are guaranteed by design.

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Maxim Integrated

│

4

MAX4968B/MAX4968C

16-Channel, Linear, High-Voltage Analog Switches

in BGA Package

Pin Test Circuits/Timing Diagrams

1V

SW_A

I

LEAK

A

SW_B

I

LEAK

A

V

OUT

SW_A

SW_B

R

L

100Ω

V

OUT

SW_A

SW_B

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

R

L

100kΩ

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

V

PP

V

NN

V

PP

V

NN

MAX4968B

MAX4968C

V

DD

GND

5V

SWITCH-OFF LEAKAGE

V

IN

= 10V

P-P

AT 5MHz

SW_A

V

OUT

SW_B

V

OUT

SW_A

I

ID

SW_B

DC OFFSET ON/OFF

V

IN

= 10V

P-P

AT 5MHz

t

ON

/t

OFF

TEST CIRCUIT

SW_A

V

NN

SW_B

SW_A

SW_B

50Ω

R

L

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

ISO

= 20log

V

DD

GND

V

OUT

V

IN

5V

50Ω

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

V

PP

V

NN

V

PP

V

NN

MAX4968B

MAX4968C

V

DD

GND

V

OUT

V

IN

5V

ISOLATION DIODE

CURRENT

V

CT

= 20log

OFF-ISOLATION

+V

SPK

V

OUT

100pF

V

COM_

SW_B

SW_A

-V

SPK

V

OUT

SW_A

CROSSTALK

V

OUT

50Ω

SW_B

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

R

L

1kΩ

V

PP

V

NN

V

PP

V

NN

MAX4968B

MAX4968C

V

DD

5V

GND

Q = 1000pF x V

OUT

CHARGE INJECTION

V

IN

10mV

P-P

SW_A

SW_B

V

OUT

200pF

60V

P-P

BURST

(1% DUTY CYCLE)

V

IN

OUTPUT VOLTAGE SPIKE

SW_A

SW_B

V

OUT

200pF

MAX4968B

MAX4968C

MAX4968B

MAX4968C

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

V

PP

V

NN

V

PP

V

NN

V

DD

GND

5V

SMALL-SIGNAL

BANDWIDTH MEASUREMENT

LARGE-SIGNAL

BANDWIDTH MEASUREMENT

Figure 1. Test Circuits

www.maximintegrated.com

Maxim Integrated

│

5

参数名称	属性值
Product Attribute	Attribute Value
制造商 Manufacturer	Maxim(美信半导体)
产品种类 Product Category	Analog Switch ICs
RoHS	Details
Number of Switches	16 Switch
Configuration	16 x SPST
On Resistance - Max	34 Ohms
Switch Voltage - Max	10 V
On Time - Max	5 us
Off Time - Max	3.5 us
工作电源电压 Operating Supply Voltage	2.37 V to 5.5 V
最小工作温度 Minimum Operating Temperature	- 40 C
最大工作温度 Maximum Operating Temperature	+ 85 C
安装风格 Mounting Style	SMD/SMT
封装 / 箱体 Package / Case	LQFP-48
系列 Packaging	Tube
Supply Type	Single Supply, Dual Supply
Supply Current - Max	4 uA
Maximum Dual Supply Voltage	10.5 V
Minimum Dual Supply Voltage	- 200 V, 9.5 V
Pd-功率耗散 Pd - Power Dissipation	1.818 W
工厂包装数量 Factory Pack Quantity	250
电源电压-最大 Supply Voltage - Max	5.5 V
电源电压-最小 Supply Voltage - Min	2.37 V
单位重量 Unit Weight	0.006409 oz

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