A low power programmable gain amplifier with wide dynamic range

2008 ◽  
Author(s):  
So Young Kang ◽  
Inn Yeal Oh ◽  
Jai Hoon Bang ◽  
Chul Soon Park
Keyword(s):  
Low Power ◽  
Dynamic Range ◽  
Wide Dynamic Range ◽  
Programmable Gain Amplifier ◽  
Programmable Gain

A Low-Noise, Low-Power, Wide Dynamic Range Logarithmic Amplifier for Biomedical Applications

2018 ◽  
Vol 27 (07) ◽  
pp. 1850104 ◽  
Author(s):  
Yuwadee Sundarasaradula ◽  
Apinunt Thanachayanont
Keyword(s):  
Low Power ◽  
Biomedical Applications ◽  
Dynamic Range ◽  
Supply Voltage ◽  
Low Noise ◽  
Power Supply Voltage ◽  
Wide Dynamic Range ◽  
Dc Offset ◽  
Limiting Amplifier ◽  
Logarithmic Amplifier

This paper presents the design and realization of a low-noise, low-power, wide dynamic range CMOS logarithmic amplifier for biomedical applications. The proposed amplifier is based on the true piecewise linear function by using progressive-compression parallel-summation architecture. A DC offset cancellation feedback loop is used to prevent output saturation and deteriorated input sensitivity from inherent DC offset voltages. The proposed logarithmic amplifier was designed and fabricated in a standard 0.18[Formula: see text][Formula: see text]m CMOS technology. The prototype chip includes six limiting amplifier stages and an on-chip bias generator, occupying a die area of 0.027[Formula: see text]mm2. The overall circuit consumes 9.75[Formula: see text][Formula: see text]W from a single 1.5[Formula: see text]V power supply voltage. Measured results showed that the prototype logarithmic amplifier exhibited an 80[Formula: see text]dB input dynamic range (from 10[Formula: see text][Formula: see text]V to 100[Formula: see text]mV), a bandwidth of 4[Formula: see text]Hz–10[Formula: see text]kHz, and a total input-referred noise of 5.52[Formula: see text][Formula: see text]V.

A Low-Power Wide Dynamic-Range Current Readout Circuit for Ion-Sensitive FET Sensors

2017 ◽  
Vol 11 (3) ◽  
pp. 523-533 ◽  
Author(s):  
Hyunwoo Son ◽  
Hwasuk Cho ◽  
Jahyun Koo ◽  
Youngwoo Ji ◽  
Byungsub Kim ◽  
...  
Keyword(s):  
Low Power ◽  
Dynamic Range ◽  
Readout Circuit ◽  
Wide Dynamic Range
Sign in / Sign up

Export Citation Format

Share Document