Session 23-4
A High-Resolution Low-Power Oversampling ADC with
Extended-Range for Bio- Sensor Arrays
Abstract
| A calibration-free, high-resolution ADC designed for bioluminescence sensing employs an extended-counting architecture in which the residual error from a second-order incremental SD modulator is encoded using a successive approximation ADC. The ADC has been integrated in 0.18-um CMOS technology and achieves a dynamic range of 90.1dB and a peak SNDR of 86.3dB at a conversion rate of 1MSample/sec with 38mW power consumption. |