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使用内置自测的增强测试策略的模拟数字转换器的设计和测试
Ramesh J1, Govindaraj V2, Sharmila Devi S3
1Department of Electronics and Communication Engineering, PSG College of Technology, Coimbatore, India.
Scientific reports
|August 29, 2025
概括
一个新的内置自测 (BIST) 方案有效地检测模拟数字转换器 (ADC) 的故障. 这种方法在各种ADC架构中实现了高故障覆盖率,提高了复杂的混合信号集成电路的可靠性.
科学领域:
- 电气工程
- 计算机工程
背景情况:
- 模拟和混合信号集成电路 (AMS IC) 的进步使复杂的单片设计成为可能.
- 在AMSIC中增加的电路复杂性导致可控性和可观测性降低,使测试复杂化.
- 模拟数字转换器 (ADC) 在混合信号电路中对实时模拟信号的处理至关重要,因此需要强大的测试方法.
研究的目的:
- 提出一个全新的自定义内置自测 (BIST) 方案,用于ADC的故障检测.
- 在复杂的集成电路中提高ADC的可靠性和可测性.
- 提供一种有效的方法来识别ADC操作中的错误.
主要方法:
- 一个完全定制的BIST方案被设计出来,包含一个模式计数器,自适应式道发生器和一个双阶段操作放大器比较器.
- BIST 方案在时间域中生成测试输出,以直接确定错误.
- 拟议的BIST在四种不同的ADC架构中得到验证:伺服跟踪ADC,闪光ADC,门逆位定量 (TIQ) 闪光ADC和基于三级比较器的伺服跟踪ADC.
主要成果:
- 拟议的BIST方案证明了有效的故障检测能力.
- BIST 方法提供易于解释的时间域输出以识别错误.
- 在四个测试的ADC架构中实现了95.8%的平均故障覆盖率.
结论:
- 开发的BIST方案为ADC的故障检测提供了可靠的解决方案.
- BIST方法显著提高了复杂的混合信号集成电路的可测性.
- 高故障覆盖率表明,拟议的BIST有效地确保了ADC的可靠性.
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