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General Description

The MAX4810/MAX4811/MAX4812 integrated circuits

generate high-voltage, high-frequency, unipolar or bipo-

lar pulses from low-voltage logic inputs. These dual

pulsers feature independent logic inputs, independent

high-voltage pulser outputs with active clamps and

independent high-voltage supply inputs.

The MAX4810/MAX4811/MAX4812 feature a 9Ω output

impedance for the high-voltage outputs, and a 27Ω

impedance for the active clamp. The high-voltage out-

puts are guaranteed to provide 1.3A output current.

All devices use three logic inputs per channel to control

the positive and negative pulses and active clamp. Also

included are two independent enable inputs. Disabling

EN ensures the output MOSFETs are not accidentally

turned on during fast power-supply ramping. This allows

for faster ramp times and smaller delays between puls-

ing modes. A low-power shutdown mode reduces

power consumption to less than 1µA. All digital inputs

are CMOS compatible.

The MAX4810 includes clamp output overvoltage pro-

tection, while the MAX4811 features both pulser output

and clamp output overvoltage protection. The MAX4812

does not provide overvoltage protection. See the

Ordering Information/Selector Guide

The MAX4810/MAX4811/MAX4812 are available in a

56-pin (7mm x 7mm), TQFN exposed-pad package and

are specified over the 0°C to +70°C commercial tem-

perature range.

Features

♦ Highly Integrated, High-Voltage, High-Frequency

Unipolar/Bipolar Pulser

♦ 9Ω Output Impedance and 1.3A (min) Output

Current

♦ 27Ω Active Clamp

♦ Pulser and Clamp Overvoltage Protection

(MAX4810/MAX4811)

♦ 0 to +220V Unipolar or ±110V Bipolar Outputs

♦ Matched Rise/Fall Times and Matched

Propagation Delays

♦ CMOS-Compatible Logic Inputs

♦ 56-Pin, 7mm x 7mm, TQFN Package

MAX4810/MAX4811/MAX4812

Dual, Unipolar/Bipolar, High-Voltage

Digital Pulsers

________________________________________________________________

Maxim Integrated Products

19-4138; Rev 0; 10/08

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.

EVALUATION KIT

AVAILABLE

Pin Configuration

TOP VIEW

MAX4810

MAX4811

MAX4812

TQFN

7mm x 7mm

GND

CC1

INN1

INC1

INP1

EN1

AGND

EN2

INP2

INC2

INN2

CC2

GND

DP1

GND

CC1

GC1

DC1

EE1

EE2

DC2

GC2

CC2

GND

DP2

1 2 3 4 5 6 7 8 9 1011121314

42 41 40 39 38 37 36 35 34 33 32 31 30 29

NN1

GN1

DN1

NN1

N.C.

ON1

OCN1

GND

OCP1

OP1

N.C.

PP1

GP1

NN2

GN2

DN2

NN2

N.C.

ON2

OCN2

GND

OCP2

OP2

N.C.

PP2

GP2

*EP = EXPOSED PAD, CONNECT EP TO V

*EP

SHDN

Ordering Information/

Selector Guide

Note: All devices are specified over the 0°C to +70°C operating

temperature range.

Denotes a lead-free/RoHS-compliant package.

Future product—contact factory for availability.

EP = Exposed pad.

PART

PROTECTED

OUTPUTS

OUTPUT

CURRENT

(A)

PIN-

PACKAGE

MAX4810CTN+

OCP_, OCN_

1.3

56 TQFN-EP**

MAX4811CTN+

OCP_, OCN_,

OP_, ON_

1.3

56 TQFN-EP**

MAX4812CTN+*

None 1.3

56 TQFN-EP**

Warning: The MAX4810/MAX4811/MAX4812 are designed to operate with high voltages. Exercise caution.

Ultrasound Medical

Imaging

Cleaning Equipment

Flaw Detection

Piezoelectric Drivers

Test Instruments

Applications

Summary of content (20 pages)

PAGE 1
9-4138; Rev 0; 10/08 KIT ATION EVALU LE B A IL A AV Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers Features The MAX4810/MAX4811/MAX4812 integrated circuits generate high-voltage, high-frequency, unipolar or bipolar pulses from low-voltage logic inputs. These dual pulsers feature independent logic inputs, independent high-voltage pulser outputs with active clamps and independent high-voltage supply inputs.
PAGE 2
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) VDD Logic Supply Voltage........................................-0.3V to +6V VCC_ Output Driver Positive Supply Voltage ..........-0.3V to +15V VEE_ Output Driver Negative Supply Voltage.........-15V to +0.3V VPP_ High Positive Supply Voltage.......................-0.3V to +230V VNN_ High Negative Supply Voltage ....................-230V to +0.3V VSS Voltage ..................
PAGE 3
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers (VDD = +2.7V to +6V, VCC_ = +4.75V to +12.6V, VEE_ = -12.6V to -4.75V, VNN_ = -200V to 0, VPP_ = 0 to (VNN_ + 200V), VSS ≤ the lower of VNN1 or VNN2, TA = TJ = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) (See Figures 8, 9, and 10.
PAGE 4
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers ELECTRICAL CHARACTERISTICS (continued) (VDD = +2.7V to +6V, VCC_ = +4.75V to +12.6V, VEE_ = -12.6V to -4.75V, VNN_ = -200V to 0, VPP_ = 0 to (VNN_ + 200V), VSS ≤ the lower of VNN1 or VNN2, TA = TJ = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) (See Figures 8, 9, and 10.
PAGE 5
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers (VDD = +2.7V to +6V, VCC_ = +4.75V to +12.6V, VEE_ = -12.6V to -4.75V, VNN_ = -200V to 0, VPP_ = 0 to (VNN_ + 200V), VSS ≤ the lower of VNN1 or VNN2, TA = TJ = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) (See Figures 8, 9, and 10.
PAGE 6
Typical Operating Characteristics (VDD = +3.3V, VCC_ = +12V, VEE_ = -12V, VSS = -100V, VPP_ = +100V, VNN_ = -100V, fOUT = 5MHz, TA = +25°C, unless otherwise noted.) 0.46 0.44 0.38 20 15 0.36 0.32 0.30 0 3 5 7 9 11 13 1 15 2 3 4 9 10 0 8 6 20 30 40 50 60 4 PULSES, PRF = 10kHz 0.72 18 16 0.60 0.56 8 6 0.48 4 0.44 2 0 1 3 5 7 9 11 13 1 15 MAX4810/11/12 toc07 10 6 IPP (mA) 0.64 0.60 0.56 0.80 5 4 0.48 0.44 1 0.44 0.
PAGE 7
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers 0.72 INN (mA) 12 10 7 0.64 6 0.60 4 0.56 6 0.52 3 4 0.48 2 2 0.44 1 0 0.40 2 3 4 5 6 7 8 9 10 0 0 10 20 30 40 50 60 0 70 10 20 30 40 50 60 70 TEMPERATURE (°C) TEMPERATURE (°C) OUT RISE TIME (GND TO VPP_) vs. VCC_/VEE_ SUPPLY VOLTAGE OUT FALL TIME (GND TO VNN_) vs. VCC_/VEE_ SUPPLY VOLTAGE INP-TO-OUT RISE PROPAGATION DELAY vs.
PAGE 8
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers MAX4810/MAX4811/MAX4812 Pin Description PIN 8 NAME FUNCTION 1 CGP1 Channel 1 High-Side Gate Input. Connect a 1nF to 10nF capacitor between CDP1 and CGP1 as close as possible to the device. 2,3 VPP1 Channel 1 High-Side Positive Supply Voltage Input. Bypass VPP1 to GND with a 0.1µF as close as possible to the device. See the Power Supplies and Bypassing section. Depending on the output, additional bypassing may be required. 4, 10, 33, 39 N.C.
PAGE 9
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers PIN NAME FUNCTION 31, 32 VNN2 Channel 2 High-Side Negative Supply Voltage Input. Bypass VNN2 to GND with a 0.1µF as close as possible to the device. See the Power Supplies and Bypassing section. Depending on the output, additional bypassing may be required.
PAGE 10
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers Table 1.
PAGE 11
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers PVNN_) must be kept below the maximum power-dissipation limit. See the Typical Operating Characteristics section for more information on typical supply currents versus switching frequencies. Power-Supply Ramping and Gate-Source Short Circuit The device consumes most of the supply current from VCC_ supply to charge and discharge internal nodes such as the gate capacitance of the high-side FET (CP) and the low-side FET (CN).
PAGE 12
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers VDD VCC_ CDP_ CGP_ VPP_ VDD VCC_ LEVEL SHIFTER INP_ CDP_ CGP_ OP_ VSS GND_ VDD LEVEL SHIFTER INC_ VEE_ CDC_ CGC_ OCP_ SHDN VSS SHORT CIRCUIT EN_ MAX4810 VSS VDD VSS OCN_ VCC_ LEVEL SHIFTER GND VSS VDD ON_ VCC_ CGN_ LEVEL SHIFTER INN_ CDN_ VNN_ GND VEE_ CDC_ CGC_ CDN_ CGN_ Figure 1.
PAGE 13
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers VCC_ CDP_ MAX4810/MAX4811/MAX4812 VDD CGP_ VPP_ VDD VCC_ LEVEL SHIFTER INP_ CDP_ CGP_ OP_ VSS GND_ VDD LEVEL SHIFTER INC_ VEE_ CDC_ CGC_ OCP_ SHDN VSS SHORT CIRCUIT EN_ MAX4811 VSS VSS VDD OCN_ VCC_ LEVEL SHIFTER GND VSS VDD ON_ VCC_ CGN_ LEVEL SHIFTER INN_ CDN_ VNN_ GND VEE_ CDC_ CGC_ CDN_ CGN_ Figure 2.
PAGE 14
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers VDD VCC_ CDP_ CGP_ VPP_ VDD VCC_ LEVEL SHIFTER INP_ CDP_ CGP_ OP_ VSS GND_ VDD LEVEL SHIFTER INC_ VEE_ CDC_ CGC_ OCP_ SHDN VSS SHORT CIRCUIT EN_ MAX4812 VSS VDD VSS OCN_ VCC_ LEVEL SHIFTER GND VSS VDD ON_ VCC_ CGN_ LEVEL SHIFTER INN_ CDN_ VNN_ GND VEE_ CDC_ CGC_ CDN_ CGN_ Figure 3.
PAGE 15
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers MAX4810/MAX4811/MAX4812 tFPN 90% 90% 10% VPP_ 10% tFON OUT_ tRNO 90% 10% 10% tROP 90% tFPO 90% 10% tPOH INP_ tPHO 50% GND 10% VNN_ tRNP 50% 50% 50% tPLH tPHL tPOL tPLO VDD 50% INN_ 50% 50% 50% GND INC_ = HIGH Figure 4. Detailed Timing (RL = 100Ω, CL = 100pF) OUT_ (INP_ = HIGH) GND 10% OUT_ (INN_ = HIGH) 10% tDI EN 50% tEN 50% INC_ = HIGH Figure 5.
PAGE 16
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers OUT_ (VPP_) 1kΩ PULLUP RESISTOR TO VPP_ GND 10% 10% 1kΩ PULLDOWN RESISTOR TO VNN_ 10% OUT_ (VNN_) tEN-CL tDI-CL INC_ Figure 6. Active Clamp Timing +12V 90% CGN_ GND 10% 10% GND CGP_ -12V tDI-SH EN 10% tEN-SH 50% 1kΩ PULLUP RESISTOR BETWEEN CGN_ AND +12V. 1kΩ PULLDOWN RESISTOR BETWEEN CGP_ AND -12V. Figure 7.
PAGE 17
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers MAX4810/MAX4811/MAX4812 -100V -12V +3V -12V +12V +12V GND CDP2 VCC2 CGC2 VEE2 CDC2 VSS VDD VEE1 CDC1 CGC1 GND CGP2 42 VPP1 VPP2 41 3 VPP1 VPP2 40 4 N.C. N.C. 39 5 OP1 OP2 38 6 OCP1 OCP2 37 7 GND 8 OCN1 9 ON1 GND 36 MAX4810 +100V OUT2 OCN2 35 ON2 34 -100V GND VCC2 INN2 INC2 CDN2 29 INP2 CGN2 30 14 CDN1 EN2 13 CGN1 AGND VNN2 31 SHDN 12 VNN1 EN1 VNN2 32 INP1 N.C. 33 11 VNN1 INC1 10 N.C.
PAGE 18
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers -100V -12V +3V -12V +12V +12V GND CDP2 VCC2 CGC2 VEE2 CDC2 VSS VDD VEE1 CDC1 CGC1 GND VPP1 VPP2 41 3 VPP1 VPP2 40 4 N.C. N.C. 39 5 OP1 OP2 38 6 OCP1 OCP2 37 7 GND 8 OCN1 9 ON1 GND 36 MAX4811 +100V OUT1 OCN2 35 ON2 34 -100V GND VCC2 INN2 INC2 CDN2 29 INP2 CGN2 30 14 CDN1 EN2 13 CGN1 AGND VNN2 31 SHDN 12 VNN1 EN1 VNN2 32 INP1 N.C. 33 11 VNN1 INC1 10 N.C.
PAGE 19
Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers MAX4810/MAX4811/MAX4812 +3V +12V GND CDP2 VCC2 CGC2 VEE2 CDC2 VSS VDD VEE1 CDC1 CGC1 GND CDP1 CAC CGP2 42 1 CGP1 2 VPP1 VPP2 41 3 VPP1 VPP2 40 4 N.C. N.C. 39 5 OP1 OP2 38 6 OCP1 OCP2 37 7 GND GND 36 8 OCN1 9 ON1 MAX4812 +100V CPP OUT2 OCN2 35 ON2 34 10 N.C. N.C.
PAGE 20
MAX4810/MAX4811/MAX4812 Dual, Unipolar/Bipolar, High-Voltage Digital Pulsers Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 56 TQFN T5677-1 21-0144 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.