MAX4940
Dual/Quad, Unipolar/Bipolar, High-Voltage Digital Pulsers
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Ideal for High-Voltage Applications Such As Portable Ultrasound Imaging and Industrial Flaw Detection
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Features
- High-Density Quad-Channel Pulser in One Package
- 0 to +220V Unipolar or ±110V Bipolar Outputs
- 8.5Ω (typ) Output Impedance and 2.0A (typ) Output Current
- 21Ω (typ) Always-On Active Clamp with Integrated Blocking Diodes
- Integrated Output Diodes (MAX4940A Only)
- No Special Power-Supply Sequencing Required for Trilevel Applications
- Matched Rise/Fall Times and Matched Propagation Delays
- CMOS-Compatible Logic Inputs
- 56-Pin, 8mm x 8mm, TQFN Package
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The MAX4940/MAX4940A integrated circuits generate high-voltage, high-frequency, unipolar or bipolar pulses from low-voltage logic inputs. These quad/dual pulsers feature independent logic inputs, independent high-voltage pulser outputs with active clamps and independent high-voltage supply inputs.
The MAX4940/MAX4940A feature quad, high-voltage pulsers with 8.5Ω output impedance for the high-voltage outputs and a 21Ω impedance for the active clamp. The high-voltage outputs can provide 2.0A (typ) output current. All devices use two logic inputs per channel to control the positive and negative pulses. The MAX4940/MAX4940A have a dedicated input to control the active clamp. All devices feature an independent enable input EN. All digital inputs are CMOS compatible (see the Ordering Information/Selector Guide in the full data sheet).
The MAX4940/MAX4940A are available in a 56-pin, 8mm x 8mm, TQFN exposed pad package and are specified over the 0°C to +70°C commercial temperature range.
Warning: Exercise caution. The MAX4940/MAX4940A are designed to operate with high voltages.
Applications
- Cleaning Equipment
- Flaw Detection
- Piezoelectric Drivers
- Test Instruments
- Ultrasound Medical Imaging
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
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Support
Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
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MAX4940
Documentation
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Data Sheet 1
Reliability Data 1
Application Note 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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| MAX4940ACTN+ |
56-LFCSP-8X8X0.75
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| MAX4940ACTN+T |
56-LFCSP-8X8X0.75
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| MAX4940CTN+ |
56-LFCSP-8X8X0.75
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- MAX4940ACTN+
- Pin/Package Drawing
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56-LFCSP-8X8X0.75
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- MAX4940ACTN+T
- Pin/Package Drawing
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56-LFCSP-8X8X0.75
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- MAX4940CTN+
- Pin/Package Drawing
-
56-LFCSP-8X8X0.75
- Documentation
-
HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
Software & Part Ecosystem
Evaluation Kits 2
MAX4940EVKIT
Evaluation Kit/Master Board for the MAX4940 and MAX4940A
Product Detail
The MAX4940 evaluation kit (EV kit) provides a proven design to evaluate the MAX4940 quad, high-voltage pulse driver. The MAX4940 EV kit can be driven by the MAX4940 Master Board, a signal generator based on the Altera EPM1270F256C5N MAX II CPLD.
The MAX4940 EV kit comes with a MAX4940CTN+ installed. Contact the factory for free samples of the pin-compatible MAX4940ACTN+ to evaluate this device.
For complete evaluation, including test waveform generation, order the MAX4940MB+ together with the MAX4940EVKIT+.
Applications
- Cleaning Equipment
- Flaw Detection
- Piezoelectric Drivers
- Test Instruments
- Ultrasound Medical Imaging
MAX4940MB
Evaluation Kit/Master Board for the MAX4940 and MAX4940A
Product Detail
The MAX4940 evaluation kit (EV kit) provides a proven design to evaluate the MAX4940 quad, high-voltage pulse driver. The MAX4940 EV kit can be driven by the MAX4940 Master Board, a signal generator based on the Altera EPM1270F256C5N MAX II CPLD.
The MAX4940 EV kit comes with a MAX4940CTN+ installed. Contact the factory for free samples of the pin-compatible MAX4940ACTN+ to evaluate this device.
For complete evaluation, including test waveform generation, order the MAX4940MB+ together with the MAX4940EVKIT+.
Applications
- Cleaning Equipment
- Flaw Detection
- Piezoelectric Drivers
- Test Instruments
- Ultrasound Medical Imaging