Цифровая рентгенография

AD7960 выпускается в 32-выводном корпусе LFCSP (QFN) и работает в температурном диапазоне от −40°C до +85°C.

ОБЛАСТИ ПРИМЕНЕНИЯ

• Цифровые системы формирования изображений
    Цифровая рентгенография
   Компьютерная томография
   Инфракрасные камеры
 Управление градиентом в магнитно-резонансной томографии
• Высокоскоростные системы сбора данных
• Спектроскопия
• Контрольно-испытательная аппаратура

Результаты преобразования доступны пользователю через интерфейс LVDS, тактовый сигнал которого формируется внутренним генератором и выдается на внешний вывод, что позволяет минимизировать количество необходимых внешних цепей.

AD7626 выпускается в 32-выводном корпусе LFCSP с габаритами 5 мм × 5 мм. Рабочий температурный диапазон составляет от −40°C до +85°C.

Области применения

• Цифровые системы визуализации
  Цифровые рентгеновские аппараты
  Цифровые магниторезонансные томографы
  Инфракрасные камеры и камеры с ПЗС
• Быстродействующие системы сбора данных
• Приемники систем связи с широким динамическим диапазоном
• Спектральный анализ
• Контрольно-испытательная аппаратура

The AD8488 is a 128-channel analog front end designed for use in high performance digital X-ray systems. The analog channels consist of an integrator followed by a gain selectable single-ended to low impedance differential output. The analog channel converts the charge acquired by X-ray or photodiode detectors to a voltage. The channels are composed of CMOS transistors, using typical high input impedance CMOS gates. The integrators generate charge dependent voltages using a range of selectable capacitance values that accommodate a broad range of input charge values. The integrators are followed by single-ended input to differential output voltage amplifiers where offset and low frequency noise voltages are subtracted from the input voltages. A 128:1 channel differential MUX follows the buffers and drives the analog output buffer. Switch drivers and certain digital timing functions are included, and all are mounted on a 255-lead BGA substrate. Charge conversion for all 128 channels is simultaneous followed by a sequential voltage output read of the channels using a 7-bit address code. The sequence occurs twice, sampling all 128 channels. Logic control inputs, CS_A and CS_B select the lower and upper 64-blocks of channel addresses.

The AD8488 is packaged in a 17 mm × 17 mm 255-lead RoHS compliant ball grid array (BGA). The operating temperature range is 0°C to 85°C ambient. 

Applications

• High performance digital X-ray systems
• Medical X-ray
• Security (baggage scanner) systems

All converted channel results are output on a single LVDS self-clocked serial interface that significantly reduces external hardware. An SPI-compatible serial interface allows configuration of the AFE using SDI input. The SDO output allows the user to daisy chain several AFEs on a single 3-wire bus.

An integrated AFE timing sequencer controls the sampling activity of the analog front end (AFE). The sequencer is programmed via the SPI port and is timed by a single clock, ACLK.

• Digital X-ray panel
• Photodiode sensors array
• CT Scanner
• High channel count data acquisition systems
  (current or voltage input)
• TFT panel readout

Unique characteristics of the end system can be easily accommodated via several built-in features including an auto-zero recalibration via a single register command, as well as configurable sample rate and frequency response.

The ADIS16201 also offers a comprehensive set of features which can be used to further reduce the hardware complexity of system designs. These integrated features include a configurable alarm function, auxiliary 12-bit ADC, auxiliary 12-bit DAC, configurable digital I/O port, and a digital self test function. The ADIS16201 offers two different power management features that can be enabled via the SPI port; a programmable duty cycle sleep mode for systmes that do not require continuous operation and a low power mode for systems that can trade reduced sample rates for more efficient power operation.

The ADIS16201 is available in a 9.2mm x 9.2mm x 4mm Land Grid Array (LGA) package with a temperature range of −40°C to +125°C.

• Platform Stabilization and Leveling
• Tilt Sensing, Inclinometers
• Motion / Position Measurement
• Monitor / Alarm Devices (Security, Medical, Safety)