A Digitally Programmable Rail-to-Rail CMOS Operational Amplifier as Reusable Silicon IP
نویسندگان
چکیده
A digitally programmable rail-to-rail CMOS operational amplifier (Op Amp) is designed using standard 0.35 um CMOS process. By using an efficient MOS capacitor is used to compensate the stability of the Op Amp. A compensation current switch is used to adjust the slew rate. Using the schemes, the Op Amp can obtain improved the stability, bandwidth, slew rate and settling time according to the output load.
منابع مشابه
0 . 9 V rail - to - rail constant gm CMOS amplifier input stage
Presented is a 0.9 V rail-to-rail constant gm CMOS amplifier input stage consisting of complementary differential pairs and a gm control circuit. The gm control circuit eliminates the gm dead zone, which occurs in the conventional rail-to-rail amplifier with ultra-low supply voltages. The proposed amplifier input stage has a constant gm that varies by +2.3% for rail-to-rail input common-mode le...
متن کاملOperational Amplifier Design with Rail to Rail Supply Voltage Output Having Reduced Power Dissipation
In this paper design for 1 volt rail to rail supply voltage output of operational amplifier with common mode feedback amplifier has been presented. The circuit has been simulated using BSIM4 model with 50nm CMOS process. The simulation results show that output voltages for the modified operational amplifier are swinging from 10mV to 990mV i.e. between the rail to rail supply voltages (0 to 1V)....
متن کاملA Design Strategy for a 1-V Rail-to-Rail Input/Output CMOS Operational Amplifier in Standard CMOS Technology
A design strategy for a rail-to-rail input / output operational amplifier in standard CMOS 0.18 μm digital process with a 0.5-V threshold is presented. It uses a novel level shifting technique of the input signal and a dynamically biased class AB output stage based on a switched-capacitor configuration. The amplifier is capable of working with a power supply as low as 1-V while providing a 26.6...
متن کامل1-V quasi constant-gm input/output rail-to-rail CMOS op-amp
A CMOS operational amplifier with input/output rail-to-rail range is presented. The circuit operates with a 1-V single supply. It uses dynamically biased input level shifters, controlled by a novel tuning scheme, to extend the input common-mode voltage range from one rail to the other. The tuning circuit takes the total biasing current of the amplifier input stage and, hence, its small-signal r...
متن کاملLow Voltage Rail to Rail CMOS Current Feedback Operational Ampli®er and its Applications for Analog VLSI
This paper presents a new CMOS current feedback operational amplifier (CFOA) with rail to rail swing capability at all terminals. The circuit operates as a class AB for lower power consumption. Besides operating at low supply voltages of 1.5 V, the proposed CFOA has a standby current of 200 A. The proposed CFOA circuit is thus a versatile building block for low voltage low power applications. T...
متن کامل