5,910 research outputs found
A Time-Division Multiplexed 8-Channel Non-Contact ECG Recording IC with a Common-Mode Interference Tolerance of
No full text1
Low-Noise Distributed RC Oscillator
No full text© 2021 IEEE.This article proposes a circuit architecture and design strategy of a low-noise oscillator based on the distributed RC network. The distributed RC network receives a differential step input and propagates the true phase through the resistive path while the complementary phase through the capacitive path. It effectively suppresses the effect of noise by increasing the signal transition slope at the time of interest. It is achieved by embedding a bandpass characteristic with a phase delay of π. A 358-kHz quadrature oscillator with a fourth-stage RC network is implemented using the 0.18- μm CMOS process. It achieves an figure of merit (FoM) of -161.2 dBc/Hz at a 100-Hz offset with a stable 20-dB roll-off in the phase noise and an Allan deviation floor of less than 0.7 ppm.11Nsciescopu
A Physically Unclonable Function Combining a Process Mismatch Amplifier in an Oscillator Collapse Topology
No full text1
A 2.5Gbps Transceiver and Channel Architecture for High-Speed Automotive Communication System
No full textIn this paper, a new transceiver system for the in-vehicle communication system is proposed to enhance data transmission rate and timing accuracy in TDM-based application. The proposed system utilizes point-to-point (P2P) channel, a closed-loop clock forwarding path, and a transceiver with a repeater and clock delay adjuster. The proposed system with 4 ECU (Electronic Computing Unit) nodes is implemented in 180nm CMOS technology and, when compared with conventional bus-based system, achieved more than 125 times faster data transmission. The maximum data rate was 2.5Gbps at 1.8V power supply and the worst peak-to-peak jitter for the data and clock signals over 5000 data symbols were about 49.6ps and 9.8ps respectively.11Nsciescopu
A 2.5-nW Radio Platform With an Internal Wake-Up Receiver for Smart Contact Lens Using a Single Loop Antenna
No full textThe human eye has been considered to be a promising platform for real-time diagnosis of various biomarkers in tears. The smart contact lens (SCL), as a device which directly accesses surface of human eye, is a miniaturized autonomous system integrating all the required functions on the surface of a thin film. This article presents the first implementation of a set of radio including a wake-up receiver required for SCL. The system performs RF transmission upon wake-up call using a single loop antenna. The receiver path has a baseline-tracking offset control loop to successfully detect wakeup signal in the standby state under noisy environment. The operating frequencies for uplink and downlink are 346 and 433 MHz, respectively. A magnetic-coupled wireless charging of an OFF-chip battery is also provided through the same loop antenna. The designed IC is fabricated using 0.18-mu m CMOS process, consuming a power of 2.5 nW in wakeup-ready standby state. The IC is also verified with a loop antenna and a thin-film battery integrated on a substrate of SCL.11Nsciescopu
A fast and scalable qubit-mapping method for noisy intermediate-scale quantum computers
No full text1
A High-Speed PWM-Modulated Transceiver Network for Closed-Loop Channel Topology
No full textThis paper proposes a pulse-width modulated (PWM) signaling [1] to send clock and data over a pair of channels for in-vehicle network where a closed chain of point-to-point (P2P) interconnection between electronic control units (ECU) has been established. To improve detection speed and margin of proposed receiver, we also proposed a novel clock and data recovery (CDR) scheme with 0.5 unit-interval (UI) tuning range and a PWM generator utilizing 10 equally-spaced phases. The feasibility of proposed system has been proved by successfully detecting 1.25 Gb/s data delivered via 3 ECUs and inter-channels in 180 nm CMOS technology. Compared to previous study, the proposed system achieved better efficiency in terms of power, cost, and reliability.11Nsci
A Second-Order Temperature-Compensated On-Chip R-RC Oscillator Achieving 7.93ppm/°C and 3.3pJ/Hz in -40°C to 125°C Temperature Range
No full text1
- …
