MAX14808
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MAX14808

Octal Three-Level/Quad Five-Level High-Voltage 2A Digital Pulsers with T/R Switch

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Save Power and Board Space with Industry's Only 3/5-Level Pulser with T/R Switch and Integrated Floating Power Supplies

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $49.66
Features
  • Save Space (Optimized for High-Channel-Count Systems/Portable Systems)
    • High Density
      • Eight Channels (Three-Level Operation)
      • Four Channels (Five-Level Operation) in One Package
    • Integrated Low-Power T/R Switches (MAX14808)
    • Direct Drive Architecture Eliminates External High-Voltage Capacitor
    • No External Floating Power Supply (FPS) Required
  • High Performance (Designed to Enhanced Image Quality)
    • Excellent -43dBc (typ) THD for Second Harmonic at 5MHz
    • Sync Function Eliminates Effects of FPGA Jitter and Improves Performance in Doppler Mode
    • Low Propagation Delay 18ns (typ)
    • Strong Active Return to Zero
  • Save Power
    • Low Quiescent Power Dissipation (5.7mW/Channel in Octal Mode)
    • Programmable Current Capability
    • Shutdown Mode and Disable Transmit Mode
Additional Details
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The MAX14808/MAX14809 octal three-level/quad five-level, high-voltage (HV) pulser devices generate high-frequency HV bipolar pulses (up to ±105V) from low-voltage control logic inputs for driving piezoelectric transducers in ultrasound systems. All eight channels have embedded overvoltage-protection diodes and integrated active return-to-zero clamp. Both devices have embedded independent (floating) power supplies (FPS) and level shifters that allow signal transmission without the need for external HV capacitors. The MAX14808 also features eight integrated transmit/receive (T/R) switches. The MAX14809 does not have the T/R switch function.

The devices feature two modes of operation: an octal three-level pulser mode (with integrated active return-to-zero clamp) or a quad five-level pulser mode. In octal three-level pulser mode, each channel is controlled by two logic inputs (DINN_/DINP_) and the active return to zero features half the current driving of the pulser 1A (typ). In quad five-level pulser mode, each channel is controlled by three logic inputs and the active return to zero has the same current driving of the pulser 2A (typ).

The devices can operate both in clocked and transparent mode. In clocked mode, data inputs can be synchronized with a clean differential or single-ended clock to reduce phase noise associated with FPGA output signals that are detrimental for Doppler analysis. In transparent mode, the synchronization feature is disabled and output reflects the data input after a 18ns delay. Both devices feature adjustable maximum current (0.5A to 2A) to reduce power consumption when full current capability is not required.

The devices feature integrated grass-clipping diodes (with low parasitic capacitance) for receive (Rx) and transmit (Tx) isolations. Both devices feature a damping circuit that can be activated as soon as the transmit burst is over. The damping circuit has a typical on-resistance of 500Ω. It fully discharges the pulser's output internal node before the grass-clipping diodes.

The devices are available in a 68-pin (10mm x 10mm) TQFN package with an exposed pad and are specified over the -40°C to +85°C extended temperature range.

Applications

  • Industrial Flaw Detection
  • Piezoelectric Drivers
  • Test Equipment
  • Ultrasound Medical Imaging
Part Models 2
1ku List Price Starting From $49.66

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX14808ETK+
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  • HTML
MAX14808ETK+T
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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MAX14808EVKIT

Evaluation Kit for the MAX14808

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MAX14808EVKIT

Evaluation Kit for the MAX14808

Evaluation Kit for the MAX14808

Features and Benefits

  • Windows XP-, Windows Vista-, and Windows 7-Compatible Software
  • 3.5mm Scope-Probe Jacks for High-Voltage Outputs
  • USB-PC Connection (Cable Included)
  • RoHS Compliant
  • 40-Pin Signal Header
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX14808 evaluation kit (EV kit) provides a proven design to evaluate the MAX14808 high-voltage, high-frequency pulse driver IC.
The MAX14808 evaluation system (EV system) consists of the MAX14808 EV kit and a companion MAXINT1 serial interface board. The EV system also includes Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the IC. The MAXINT1 board provides the inputs to the IC. Order the EV system for a complete PC-based evaluation of the IC, including test waveform generation. Order the EV kit if you already have a MAXINT1 board or a MAX14808-compatible controller interface.
The EV kit comes with a MAX14808ETK+ installed.

Applications

  • Industrial Flaw Detection
  • Piezoelectric Drivers
  • Test Equipment
  • Ultrasound Medical Imaging

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