A 32x32 Sb-based Geiger-mode (GM) avalanche photodiode array, operating at 2 μm with three-dimensional imaging capability, is presented. The array is interfaced with a ROIC (readout integrated circuit) in which each pixel can detect a photon and record the arrival time. The hybridized unit for the 1000-element focal plane array, when operated at 77K with 1 V overbias range, shows an average dar...

We present a novel hybrid CMOS-MQCA architecture using multi-layer Spintronic devices as computing elements. A feasibility study is presented with 22nm CMOS where new approaches for spin transfer torque induced clocking and readout scheme for variability-tolerance are introduced. A firstof-its-kind Spintronic device model enables circuit simulation using existing CAD infrastructure. Approximate...

Impedance measurements provide a useful probe of the physics of bolometers and calorimeters. We describe a method for measuring the complex impedance of these devices. In previous work, stray impedances and readout electronics of the measurement apparatus have resulted in artifacts in the impedance data. The technique allows experimenters to find an independent Thevenin or Norton equivalent cir...

We present a new CMOS readout architecture that provides near lossless in-stream compression of 10-bit video data at rates up to 1000 frames per second on large focal plane arrays. The correctness of the circuit design in performing all logic operations at data rates of interest has been fully tested and verified in fabricated prototype arrays. The architecture can be combined with different se...

This paper presents the latest implementation of the SIMD Current-mode Analogue Matrix Processor architecture. The SCAMP-3 vision chip has been fabricated in a 0.35μm CMOS technology and comprises a 128×128 general-purpose programmable processor-perpixel array. The architecture of the chip is overviewed and implementation issues are considered. The circuit design of the analogue register is pre...

This paper presents the design of a closed-loop micromachined accelerometer using a sensitivity functions shaping approach in order to reach the desired measurement performance. The controller design is based on an identified model of the plant (MEMS, readout circuit and actuator) and a pole placement strategy. Simulation results and real-time application on a prototype show the feasibility and...

This paper presents two low-power sensor read-out circuit schemes for implantable biosensor applications. The proposed work presents the design of ASK and FSK schemes in bulk CMOS technology. Either scheme consists of a data generator block and modulator block. The first version of the circuit is designed in a 0.35μm CMOS process and it can generate an amplitude-shift-keying (ASK) signal while ...

A fast gated charge integrating ADC has been developed for measuring short photomultiplier pulses at very high event rates. The circuit is bilinear with 100 pC full scale and a least count of 150 fC. It features dc coupling, a miniium gate width of 20 ns, a minimum time between events of 200 ns plus gate width, a two event buffer, and front-end zero suppression with 100 ns read time per hit cha...

We have implemented a simple circuit of the rapid single-flux-quantum ~RSFQ! logic family using a single-layer YBa2Cu3O72x thin-film structure with 14 in-plane Josephson junctions formed by direct electron beam writing. The circuit includes two dc/SFQ converters, two Josephson transmission lines, a complete RS SFQ flip-flop, and an SFQ/dc converter ~readout SQUID!. Low-frequency testing has sho...

We developed a Fabry-Perot interferometer sensor with a metal-oxide-semiconductor field-effect transistor (MOSFET) circuit for chemical sensing. The novel signal transducing technique was performed in three steps: mechanical deflection, transmittance change, and photocurrent change. A small readout photocurrent was processed by an integrated source follower circuit. The movable film of the sens...