⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种具有共模采样和开关电容驱动能力的低噪声、低失调、低漂移电容增益放大器，解决了传统放大器在驱动开关电容ADC时性能受限的问题，实现了19nV/√Hz噪声、2μV失调和75μA功耗。
(CGA) with amplifier common-mode sampling (CMS) and switched-capacitor driving capability, compatible with many conventional switched-capacitor ADC inputs (SCAI) such as delta-sigma modulators or SAR ADCs. CGAs are popular for their low power, low noise and high precision [1,2]. The capacitive gain network is highly linear, does not dissipate static power and can be noiseless. Capacitors have excellent matching and temperature drift, which has a positive impact on offset/gain errors and their drift. They also offer a high input impedance at low frequencies and rail-to-rail operation, which makes them very suitable to interface with different types of sensors. CGAs, however, do not naturally define the amplifier input common-mode (CM)
Hanqing Wang1, Gerard Mora-Puchalt2, Colin Lyden3, Roberto Maurino4, Christian Birk3
Analog Devices, Beijing, China Analog Devices, Valencia, Spain 3 Analog Devices, Cork, Ireland 4 Analog Devices, Turin, Italy 1 2 This paper describes a capacitive programmable-gain amplifier