MAXIM MAX4800A, MAX4802A User Manual

General Description

The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasonic imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage low-charge-injection SPST switches, controlled by a 20MHz serial interface. Data is clocked into an internal 8-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up.

The MAX4800A/MAX4802A operate with a wide range of high-voltage supplies including: V

PP/VNN

= +100V/

-100V, +185V/-15V, and +40V/-160V. The digital interface operates from a separate V

supply from +2.7V

to +6V. Digital inputs DIN, CLK, LE, and CLR are +6V tolerant, independent of the VDDsupply voltage. The MAX4802A provides integrated 35kΩ bleed resistors on each switch terminal to discharge capacitive loads.

The MAX4800A/MAX4802A are drop-in replacements for the Supertex HV2203 and HV2303. The devices are available in the 48-pin TQFP, 26-bump CSBGA, and 28-pin PLCC packages. All devices are specified for the commercial 0°C to +70°C temperature range.

Applications

Ultrasound Imaging

Printers

Features

♦ Fast SPI™ Interface 20MHz

♦ Pin-Compatible Replacement for Supertex HV2203

(MAX4800A)

♦ Pin-Compatible Replacement for Supertex HV2303

(MAX4802A)

♦ Flexible High-Voltage Supplies Up to V

- VNN= 200V

♦ Low-Charge-Injection, Low-Capacitance 22

ΩΩ

Switches

♦ DC to 10MHz Analog-Signal Frequency Range

♦ -77dB Off-Isolation at 5MHz

♦ Low 10µA Quiescent Current

♦ Integrated Bleed Resistors (MAX4802A Only)

♦ Available in Standard PLCC, TQFP, and CSBGA

Packages

MAX4800A/MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage

Analog Switches with 20MHz Serial Interface

________________________________________________________________

Maxim Integrated Products

19-4120; Rev 0; 5/08

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.

Ordering Information/

Selector Guide

PART

BLEED

SECOND SOURCE

PIN-

PACKAGE

MAX4800ACXZ+*

No —

26 CSBGA

MAX4800ACQI+ No

28 PLCC

MAX4800ACCM+*

48 TQFP

MAX4802ACXZ+*

Yes —

26 CSBGA

MAX4802ACQI+ Yes

28 PLCC

MAX4802ACCM+*

Yes

48 TQFP

Note: All devices are specified over the commercial 0°C to +70°C temperature range.

Future product—contact factory for availability.

Denotes a lead-free package.

SPI is a trademark of Motorola, Inc.

CLR

DIN

N.C.

GND

N.C. (RGND)

N.C.

CLK

COM4

N.C.

NO4

N.C.

COM3

N.C.

COM2

NO3

N.C.

COM5

N.C.

NO1

N.C.

N.C. NO0

COM1 N.C. NO2

N.C.

NO5

N.C.

NO6

N.C.

COM6

N.C.

NO7

N.C.

COM7

DOUT

N.C.

MAX4800A MAX4802A

COM0

() MAX4802A ONLY

1234 5678

101112

363534 33 32 313029

272625

TQFP

7mm x 7mm

TOP VIEW

Pin Configurations

Pin Configurations continued at end of data sheet.

HV2203PJ-G

HV2203FG-G

HV2303PJ-G

HV2303FG-G

RESISTORS

MAX4800A/MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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

Logic Supply Voltage........................................-0.3V to +7V

- VNNSupply Voltage ....................................................220V

Positive Supply Voltage......................-0.3V to (VNN+ 220V)

Negative Supply Voltage ..............................+0.3V to -220V

Logic Inputs LE, CLR, CLK, DIN ..............................-0.3V to +7V

DOUT..........................................................-0.3V to (V

+ 0.3V)

RGND (MAX4802A)...............................................-4.5V to +0.3V

COM_, NO_.................................................................V

to V

Continuous Power Dissipation (TA= +70°C)

26-Bump CSBGA (derate 11.8mW/°C above +70°C)..941mW

28-Pin PLCC (derate 10.5mW/°C above +70°C) .........842mW

48-Pin TQFP (derate 22.7mW/°C above +70°C)........1818mW

Junction-to-Case Thermal Resistance (

) (Note 1)

26-Lead CSBGA ........................................................ 23°C/W

28-Lead PLCC .............................................................10°C/W

48-Lead TQFP .............................................................10°C/W

Junction-to-Ambient Thermal Resistance (

) (Note 1)

26-Lead CSBGA ........................................................ 85°C/W

28-Lead PLCC .............................................................44°C/W

48-Lead TQFP .............................................................44°C/W

Operating Temperature Range...............................0°C to +70°C

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

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

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

Bump Temperature Lead-Free (Soldering)......................+260°C

Bump Temperature Lead (Soldering) ..............................+245°C

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +6V, VPP= +40V to (VNN+ 200V), VNN= -40V to -160V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ANALOG SWITCH

Analog Signal Range

COM_

NO_

(Note 3)

TA = 0°C 30

26 38I

COM

= 5mA

TA = 0°C 25

22 27

COM_

= 0

COM

200mA

TA = 0°C 25

22 27I

COM

= 5mA

TA = 0°C 18

18 24

C OM _

= 0

COM

200mA

TA = 0°C 23

20 25

COM

= 5mA

TA = 0°C 22

16 25

Small-Signal Switch On-Resistance

ONS

N N

= - 40V

COM

200mA

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer

board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial

= +40V,

= -160V,

= + 100V ,

P P

= - 100V ,

N N

= + 160V ,

P P

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

MAX4800A/MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage

Analog Switches with 20MHz Serial Interface

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +6V, VPP= +40V to (VNN+ 200V), VNN= -40V to -160V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.) (Note 2)

PARAMETER

CONDITIONS

UNITS

Small-Signal Switch On-Resistance Matching

ΔR

ONS

P P

= + 100V , V

N N

= - 100V ,

COM_

= 0, I

COM

= 5mA

520%

Large-Signal Switch On-Resistance

ONL

COM_

= V

- 10V, I

COM

= 1A 15 Ω

Shunt Resistance (MAX4802A only)

INT

NO_ or COM_ to RGND, switch off 30 35 50 kΩ

Switch-Off Leakage

)

COM_

, V

NO_

= VPP - 10V or unconnected;

(MAX4800A only)

µA

Switch-Off DC Offset

= 100kΩ (MAX4800A),

no load (MAX4802A)

010mV

Switch-On DC Offset

=100kΩ (MAX4800A),

no load (MAX4802A)

010mV

TA = 0°C 3

TA = +25°C 2 3

Switch-Output Peak Current (Note 4)

TA = +70°C 2

Switch-Output Isolation Diode Current

300ns pulse width, 2% duty cycle (Note 4)

SWITCH DYNAMIC CHARACTERISITICS

f = 5MHz, RL = 1kΩ, CL = 15pF -30 -33

Off-Isolation (Note 4) V

ISO

f = 5MHz, RL = 50Ω -58 -77

Crosstalk V

f = 5MHz, RL = 50Ω (Note 4) -60 -80 dB

COM_, NO_ Off-Capacitance

COM_

(OFF),

)

COM_

= 0, V

NO_

= 0, f = 1MHz (Note 4) 4 11 18 pF

COM_ On-Capacitance

COM_

(ON)

COM_

= 0, f = 1MHz (Note 4) 20 36 56 pF

Output Voltage Spike V

SPK

RL = 50Ω (Note 4)

= +40V, V

= -160V, V

COM_

= 0

= +100V, V

= -100V, V

COM_

= 0

Charge Injection (MAX4802A only)

= +160V, V

= -40V, V

COM_

= 0

LOGIC LEVELS

Logic-Input Low Voltage V

Logic-Input High Voltage V

Logic Input Capacitance C

(Note 4) 10 pF

Logic Input Leakage I

-1 +1 µA

DOUT Low Voltage V

SINK

= 1mA 0.4 V

MIN TYP MAX

SYMBOL

COM_(OFF

NO_(OFF

COM_

duty cycle ≤ 0.1%

300

NO_ (OFF

-150 +150

820

600

350

0.75

MAX4800A/MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +6V, VPP= +40V to (VNN+ 200V), VNN= -40V to -160V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.) (Note 2)

PARAMETER

CONDITIONS

UNITS

DOUT High Voltage V

SOURCE

= 0.75mA

0.5

POWER SUPPLIES

Supply Voltage V

2.7 6.0 V

VPP Supply Voltage V

VNN Supply Voltage V

-15 V

Supply Quiescent Current I

DDQ

= 0V, V

= V

PSD

, f

CLK

= 0 3 µA

Supply Dynamic Current I

VDD = +5V, V

= 0V, V

= +5V,

CLK

= 5MHz

2mA

Supply Quiescent Current I

PPQ

All switches remain on or off, I

COM_(ON)

5mA

10 50 µA

TA = 0°C 6.5

6.5

= +40V,

= -160V

6.5

TA = 0°C 4.0

4.0

= +100V,

= -100V

4.0

TA = 0°C 4.0

4.0

Supply Dynamic Current I

50kHz output switching frequency

= +160V,

= -40V

4.0

Supply Quiescent Current I

NNQ

All switches remain on or off, I

COM_(ON)

5mA

10 50 µA

TA = 0°C 6.5

6.5

= +40V,

= -160V

6.5

TA = 0°C 4.0

4.0

= +100V,

= -100V

4.0

TA = 0°C 4.0

4.0

Supply Dynamic Current I

50kHz output switching frequency

= +160V,

= -40V

4.0

SYMBOL

MIN TYP MAX

-160

200

with no load

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

TA = +25°C

TA = +70°C

MAX4800A/MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage

Analog Switches with 20MHz Serial Interface

_______________________________________________________________________________________ 5

TIMING CHARACTERISTICS

(VDD= +2.7V to +6V, VPP= +40V to (VNN+ 200V), VNN= -40V to -160V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

= +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ANALOG SWITCH

Turn-On Time t

NO_

= VPP - 10V, RL = 10kΩ, VNN = -40V

to -160V

5µs

Turn-Off Time t

OFF

NO_

= VPP - 10V, RL = 10kΩ, VNN = -40V

to -160V

5µs

Output Switching Frequency f

Duty cycle = 50% 50 kHz

Maximum V

COM_

, V

NO_

Slew

Rate

dV/dt (Note 4) 20 V/ns

LOGIC TIMING (Figure 1)

VDD = +5V ±10% 20

CLK Frequency f

CLK

D ai sy chai ni ng

= +3V ±10% 10

MHz

VDD = +5V ±10% 10

DIN to CLK Setup Time t

VDD = +3V ±10% 16

VDD = +5V ±10% 3

DIN to CLK Hold Time t

VDD = +3V ±10% 3

VDD = +5V ±10% 36

CLK to LE Setup Time t

VDD = +3V ±10% 65

VDD = +5V ±10% 14

LE Low Pulse Width t

VDD = +3V ±10% 22

VDD = +5V ±10% 20

CLR High Pulse Width t

VDD = +3V ±10% 40

VDD = +5V ±10% 50

tR, t

VDD = +3V ±10% 50

VDD = +5V ±10%, CL ≤ 20pF 6 42

CLK to DOUT Delay t

VDD = +3V ±10%, CL ≤ 20pF

Note 2: Specifications at 0°C are guaranteed by correlation and design. Note 3: The analog signal input V

COM_

and V

NO_

must satisfy VNN≤ (V

COM_

, V

NO_

) ≤ VPP, or remain unconnected during power-up

and power-down.

Note 4: Guaranteed by design and characterization, not production tested.

CLK Rise and Fall Times (Note 4)

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