A 16-bit 250-kHz delta-sigma modulator and decimation filter |
| |
| Authors: | Maulik PC Chadha MS Lee WL Crawley PJ |
| |
| Affiliation: | Crystal Semicond. Products Div., Cirrus Logic Inc., Austin, TX; |
| |
| Abstract: | This paper describes a delta-sigma analog-to-digital converter (ADC) capable of converting input frequencies up to 250 kHz. It consists of a fifth-order switched-capacitor delta-sigma modulator and a decimation filter. Various design optimizations in the modulator are presented. The decimation filter consists of a comb filter followed by a novel, highly efficient and scalable finite impulse response filter. The ADC was implemented in 0.6-μm CMOS technology. It achieves a dynamic range of 94 db |
| |
| Keywords: | |
|
|
