模拟前端ASIC用于混合信号系统中的紧光倍增器传感器接口
Davide Badoni1, Roberto Ammendola1, Valerio Bocci2
1Istituto Nazionale di Fisica Nucleare Sezione di Roma Tor Vergata, Viale della Ricerca Scientifica 1, 00133 Rome, Italy.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
本研究介绍了一种新的混合信号前端ASIC用于光倍增器 (SiPM) 传感器. 该设计提供精确的小信号检测,减少了对时间解析的光子检测应用的堆积.
科学领域:
- 混合信号集成电路设计设计.
- 光子检测技术的技术
- 半导体设备物理学 半导体设备物理
背景情况:
- 光倍增器 (SiPM) 传感器对于敏感的光检测至关重要.
- 现有的前端电子设备在时间解决的应用中可能面临精度和堆积方面的限制.
- 对于先进的光子检测系统,需要紧而高效的传感器接口.
研究的目的:
- 设计和验证适用于紧的SiPM传感器接口的混合信号前端应用特定集成电路 (ASIC).
- 为了实现小信号的精确检测,尽量减少堆积,以实现时间分辨率的光子检测.
- 开发一个与现代计时架构兼容的强大且节能的界面.
主要方法:
- 在AMS中实施0.35微米CMOS技术,采用两个独立的模拟通道.
- 集成定制的第二代电流输送器 (CCII+),一个快速的零交叉区分器,以及一个峰值和保持阶段.
- 在Cadence中开发一个定制的SiPM行为模型用于设计和模拟,并与SPI可配置的DAC进行控制.
主要成果:
- 该ASIC架构能够精确检测小信号,并减少堆积.
- 电路级模拟证实了正确的模拟功能和整个动态范围的稳定运行.
- 每个频道的功耗约为5.9mA在3.3V (19.5mW),平衡速度和稳定性.
结论:
- 开发的混合信号前端ASIC为SiPM传感器接口提供了有效的解决方案.
- 设计方便精确的时间分辨率光子检测,并改善了信号完整性.
- ASIC的低阻抗电流接收和快速区分能力是计时应用的关键优势.
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