MD2131数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

The MD2131 is a high-speed, arbitrary waveform, push-pull source driver. It is designed for medical ultrasound imaging and HIFU beamforming applications. It also can be used in NDT, Sonar and other ultrasound phase-array focusing beamforming applications.The MD2131 consists of CMOS digital logic input circuits, an 8-bit current DAC for waveform amplitude control, and four PWM current-sources. These current sources are constructed with the high-speed, in-phase and quadrature current-switch matrix and the built-in sine and cosine angle-to-vector look-up table. The angular resolution of the vector table is 7.5O per step, with a total range of 48 steps. There are four logic input signals to control the in-phase and quadrature PWM push-pull current-source’s output timing, frequency, cycle in the burst and waveform envelope.The MD2131’s output stage is designed to drive two DN2625 depletion N-type MOSFETs. The MOSFET drains are connected to a center-tap ultrasound frequency pulse transformer. The secondary winding of the transformer can connect to the ultrasound piezo or capacitive transducer via a cable with a good impendence match. The MD2131 has a high-speed, SPI-compatible interface to achieve per-scan-line fast updating of the data register for changing the beamforming phase angles and apodization amplitudes.

特性 Features

High resolution transmitting waveform
Up to 3.0A push-pull source-driving current
230VP-P maximum output, uses two DN2625 FETs
Angle vector beamforming I-Q switcher matrix
8-bit apodization DAC and 7.5° angular resolution
Flexible frequency-resolution trade-off
Programmable aperture windowing
250MHz maximum sampling rate
25MHz ultrasound maximum frequency
PWM modulation push-pull current source
Focusing phase adjustment & chirp waveform
Fast SPI interface
2.5V CMOS logic interface
+5.0V single power supply
Low second order harmonic distortions

简介

MD2131属于集成电路（IC）的电源管理-专用。由制造生产的MD2131电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。