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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Interface Electronics for a CMOS Electrothermal Frequency-Locked-Loop
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Interface Electronics for a CMOS Electrothermal Frequency-Locked-Loop

机译：CMOS电热锁频环的接口电子

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摘要

This paper describes a new implementation of a CMOS electrothermal frequency-locked-loop (FLL), whose output frequency is determined by the temperature-dependent phase shift of an electrothermal filter (ETF). The FLL maintains a constant phase shift in the ETF, and as a result drives it with a signal whose frequency is a well-defined function of temperature. Compared to a previous implementation, the FLL described here has significantly more loop gain, less electrical phase-spread, and is more suitable for full integration. Measurements on 16 samples (from one batch) show that the temperature dependence of the FLL''s output frequency agrees very well with the known thermal properties of bulk silicon. The untrimmed spread of this frequency is less than $pm $0.45% ($3sigma $ ) from $-{hbox{40}}{circ}{hbox{C}}$ to 100${circ} {hbox {C}}$, which corresponds to a temperature-sensing inaccuracy of less than $pm {hbox{0.7}},{circ}{hbox{C}}$ ( $3sigma$).
机译：本文介绍了CMOS电热锁频环（FLL）的新实现，其输出频率由电热滤波器（ETF）的温度相关相移决定。 FLL在ETF中保持恒定的相移，结果用频率是温度明确定义的信号来驱动它。与先前的实现相比，此处描述的FLL具有明显更高的环路增益，更少的电相位扩展，并且更适合于完全集成。对16个样品（一批）的测量表明，FLL输出频率的温度依赖性与块状硅的已知热特性非常吻合。从$-{hbox {40}} {circ} {hbox {C}} $到100 $ {circ} {hbox {C}} $$的该频率的未扩展点差小于$ pm $ 0.45％（$ 3sigma $） ，这对应于小于$ pm {hbox {0.7}}，{circ} {hbox {C}} $（$ 3sigma $）的温度感应误差。

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