아날로그 회로에서 dB-선형 이득 제어가 가능한 이득 조절 장치 및 그에 따른 증폭기
김이경, 권종기, 조민형
- 7821341 (2010.10.26)
- Provided are a gain control device and an amplifier using the gain control device. The gain control device includes a first input resistance unit having a first variable resistor whose resistance is linearly variable and a first fixed resistor respectively receiving a first input signal and a second input signal having a sign different from the first input signal and outputting current through a first output terminal, and a second input resistance unit having a second fixed resistor and a second variable resistor whose resistance is linearly variable respectively receiving the first input signal and the second input signal and outputting current through a second output terminal.Since the gain control device can separately perform dB-linear gain control, it is easily combined with a circuit, such as a continuous-time sigma-delta modulator (SDM), a continuous-time filter, and a continuous-time analog-to-digital converter (ADC), and enables miniaturization and low power consumption.
- KSP 제안 키워드
- Analog to digital converter(ADC), Continuous-Time, Control device, Gain Control, Input signal, Low-Power, Power Consumption, Sigma-Delta, Time filter, Variable Resistor, analog-to-digital, continuous-time filter, dB-linear, dB-linear gain control, delta modulator, digital converter, input resistance, low power consumption, sigma-delta modulator