ALTAIR is an application-specific integrated circuit (ASIC) developed for the readout of CdTe/CdZnTe detectors for X– $\gamma $ -ray spectroscopic imaging. ALTAIR is composed of 16 channels with analog and mixed-signal sections specifically designed for high energy resolution and high-rate applications with the constraints of a low power consumption and operation at room temperature. The ASIC has three selectable ranges for input charge signals covering photon energies up to 90, 160, or 300 keV, which allow to optimize the signal-to-noise ratio under different experimental conditions. Eight peaking times of the pulse shaper are selectable from 200 up to $2.3~\mu \text{s}$ . ALTAIR includes a 180 bits register and an integrated serial peripheral interface (SPI) interface to configure the signal-processing parameters globally or independently for each channel. The power consumption is $950~\mu \text{W}$ /channel or 1.35 mW/channel for single-ended or differential output versions, respectively. A minimum equivalent noise charge (ENC) of 37 electrons rms [386 eV full-width at half-maximum (FWHM) in CdTe] has been measured at 500 ns peaking time and 90-keV energy range. With a CdTe pixel detector connected to ALTAIR and operated at +24 °C, a pulser FWHM of 1.7 keV (160 el. rms) and 1.9-keV FWHM on 59.54 keV line of ²⁴¹ Am have been achieved at a peaking time of 500 ns.

中文翻译：

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ALTAIR：具有CdTe / CdZnTe像素检测器的X和γ射线光谱学的低噪声，低功耗，高速和宽动态范围ASIC

ALTAIR是一种专用集成电路（ASIC），用于读取X-射线的CdTe / CdZnTe检测器 $ \伽马$ 射线光谱成像。ALTAIR由16个通道组成，具有模拟和混合信号部分，专门为高能量分辨率和高速率应用而设计，并具有低功耗和在室温下运行的限制。ASIC具有三个可选范围，用于输入电荷信号，覆盖高达90、160或300 keV的光子能量，从而允许在不同实验条件下优化信噪比。脉冲整形器的八个峰值时间可以从200至 $ 2.3〜\ mu \ text {s} $ 。ALTAIR包括一个180位寄存器和一个集成的串行外设接口（SPI）接口，用于为每个通道全局或独立配置信号处理参数。功耗为 $ 950〜\ mu \ text {W} $ /通道或1.35 mW /通道，分别用于单端或差分输出版本。在500 ns的峰值时间和90-keV的能量范围内，测得的最小等效噪声电荷（ENC）为37电子均方根值（CdTe中半峰全宽386 eV（FWHM））。与连接到ALTAIR和操作在24℃，1.7千电子伏（160 EL。有效值）和1.9-keV的FWHM的脉冲发生器FWHM上的59.54千电子伏线的CdTe像素检测器²⁴¹ 上午已在500纳秒时间峰值已经实现。