Name
Abstract | ||
|---|---|---|
This paper presents a flexible read-out circuit applicable to a wide variety of resistive transducers. Compared to recent bridge-transducer read-out circuits, it achieves lower supply sensitivity and requires only one reference resistor. It digitizes an external resistance with respect to this reference with the help of a power-efficient zoom-ADC based on a first-order delta-sigma modulator. A prototype realized in a 0.18 μm CMOS process has an active area of 1.0 mm
<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>
and consumes 130 μA from a 3.3 V supply. It achieves an rms resolution of 13.7 bits in a 100 ms conversion time, and a supply sensitivity of 0.057 %/V. When used to read out a thermistor to sense temperature, 6 samples of the read-out circuit achieve an inaccuracy of less than ±0.015°C from 20°C to 80°C. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/IWASI.2015.7184929 | 2015 6th International Workshop on Advances in Sensors and Interfaces (IWASI) |
Keywords | Field | DocType |
generic read-out circuit,resistive transducer,flexible read out circuit,bridge transducer read out circuits,analog-digital converter,first-order delta-sigma modulator,CMOS process,size 0.18 mum,current 130 muA,voltage 3.3 V,temperature 20 C to 80 C | Transducer,Resistive touchscreen,Modulation,Electronic engineering,Cmos process,Resistor,Engineering,Electronic circuit,Temperature measurement,Electrical engineering,Thermistor | Conference |
Citations | PageRank | References |
0 | 0.34 | 4 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| b yousefzadeh | 1 | 0 | 0.34 |
| umit sonmez | 2 | 0 | 0.34 |
| Neelesh B. Mehta | 3 | 979 | 82.27 |
| jonathan borremans | 4 | 0 | 0.34 |
| Michiel A. P. Pertijs | 5 | 90 | 24.37 |
| Kofi A. A. Makinwa | 6 | 506 | 105.58 |