A 4 Bit Time to Digital Converter Design Based on Flash Structure

Abstract

This paper presents a 4-bit Time to Digital Converter (T/D) design using the Tanner Tools Pro with 0.25μm CMOS model library. The proposed T/D converter consists of delay block, comparator block, dynamic latch, multiplexer block, PLA-ROM. The proposed T/D converter consumes 126.3mW from 0-3.3V supply. Resolution of the proposed T/D converter is about 1.31ns. The INL and DNL of the designed 4 Bit T/D Converter are (-0.28/0.29)LSB and (-0.2/+0.6)LSB, respectively.

4 Bit Flash Tabanlı Zaman Sayısal Dönüştürücü Tasarımı

Abstract

Yapılan bu çalışmada, Tanner Tools Pro devre tasarım programında 0.25μm CMOS model kütüphanesi kullanılarak flash tabanlı 4 bit Zaman-Sayısal Dönüştürücü(Z /S)(Time-to-Digital Converter(TDC)) yapısı önerilmiştir. Tasarlanan zaman-sayısal dönüştürücü devresi; zaman geciktirme birimi, karşılaştırıcı, dinamik tutucu, çoğullayıcı devre ve PLA-ROM devre bloklarından oluşmaktadır. Önerilen bu Z/S dönüştürücü tasarımı 3.3V besleme gerilimi altında toplam 126.3mW güç harcamaktadır. Tasarlanan Z/S dönüştürücünün çözünürlüğü 1.31ns olup, INL değeri (-0.28/0.29)LSB ve DNL değeri (-0.2/+0.6) LSB olarak bulunmuştur

Keywords

• : Analog-sayısal dönüştürücüler,zaman-sayısal dönüştürücüler

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