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A self-biased PLL uses a sampled feed-forward filter network and a multi-stage inverse-linear programmable current mirror for constant loop dynamics that scale with reference frequency and are independent of multiplication factor, output frequency, and PVT. The PLL achieves a multiplication range of 1 to 4096 with less than 1.7% output jitter. Fabricated in(More)
This paper describes an efficient method to characterize the impulse sensitivity function (ISF) of a periodic circuit via periodic AC (PAC) analysis. The paper extends the application of ISF from oscillators to other periodic circuits including flip-flops, latches, clocked comparators, and regenerative amplifiers, in order to characterize their important(More)
This paper describes a noise-based method of estimating the effects of device random mismatch on circuit's transient response, such as delay and frequency. The proposed method models DC mismatch as equivalent AC pseudo-noise and exploits the fast periodic noise analysis (PNOISE) available in RF circuit simulators to compute the resulting variation in the(More)
Memory bandwidth has been one of the most critical system performance bottlenecks. As a result, the HMC (Hybrid Memory Cube) has recently been proposed to improve DRAM bandwidth as well as energy efficiency. In this paper, we explore different system interconnect designs with HMCs. We show that processor-centric network architectures cannot fully utilize(More)
—Clocked comparators have found widespread use in noise sensitive applications including analog-to-digital converters, wireline receivers, and memory bit-line detectors. However, their nonlinear, time-varying dynamics resulting in discrete output levels have discouraged the use of traditional linear time-invariant (LTI) small-signal analysis and noise(More)
This paper demonstrates that the steady-state and adjoint sensitivity analyses can be extended to stochastic mixed-signal systems based on Markov chain models. The examples of such systems include digital phase-locked loops and delta-sigma data converters, of which steady-state response is statistical in nature, consisting of an ensemble of waveforms with(More)