MAX14811是高度集成的雙通道數(shù)字脈沖發(fā)生器，采用有源鉗位技術，改善脈沖信號質量

MAX14811的概述
The MAX14811 integrated circuit generates high-voltage, high-frequency unipolar or bipolar pulses from low-voltage logic inputs. The dual pulser features independent logic inputs, independent high-voltage pulser outputs with active clamps, and independent high-voltage supply inputs.

The device features fault condition management to protect the outputs. The outputs enter three-state if both INP_ and INN_ are logic-high. The device has a 9Ω output impedance for the high-voltage outputs and a 27Ω impedance for the active clamp. The high-voltage outputs are guaranteed to provide 2.0A (typ) output current. All the pulser outputs and clamp outputs have overvoltage protection.

The device uses 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 shorter delays between pulsing modes. A low-power shutdown mode reduces power consumption to less than 1µA. All digital inputs are CMOS compatible.

The device is available in a 7mm x 7mm, 56-pin TQFN exposed-pad package and is specified over the 0°C to +70°C commercial temperature range.

MAX14811的關鍵特性
Fault Condition Management
Highly Integrated, High-Voltage, High-Frequency Unipolar/Bipolar Pulser
9Ω Output Impedance and 2.0A (typ) Output Current
27Ω Active Clamp
Pulser and Clamp Overvoltage Protection
0 to +220V Unipolar or ±110V Bipolar Outputs
Matched Rise/Fall Times and Matched Propagation Delays
CMOS-Compatible Logic Inputs
7mm x 7mm, 56-Pin TQFN Package

MAX14811的應用/使用
清洗設備
工業(yè)成像/縫隙檢測
壓電驅動器
測試設備
超聲醫(yī)療成像

MAX14811的內部功能框圖