One time programming (OTP) with Zener diodes in CMOS processes

Teichmann, J.; Bürger, Katharina; Hasche, W.; Herrfurth, J.; Taschner, G.

doi:10.1109/essderc.2003.1256906

Cited by 6 publications

(5 citation statements)

References 1 publication

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“…Moreover, the zapping process has to be efficient, thus providing a stable and low resistive zapped device. In contrast to previous works [2], the writing times in present applications are below the microsecond range [1], thus preventing the diffusion of metal atoms into the mono-crystalline Silicon from anode and cathode contacts. This implies that the resistance of the zapped device is governed by the Silicon melting rather than the metal diffusion process.…”

Section: Introductionmentioning

confidence: 90%

“…In order to improve the zapping control at low zapping currents, the second part of the paper proposes a new Zener structure. This new Zener structure has been fabricated by surrounding the conventional Zener design [1] with a deep insulator trench. Combining measurement and TCAD simulation, it is demonstrated that the trench thermal barrier modifies the electrothermal evolution of the zapping process thus being of paramount importance to optimize the efficiency of the zapping.…”

Section: Introductionmentioning

confidence: 99%

“…Zener antifuses, otherwise named Zener zaps, are currently integrated in Smart Power technologies to provide low-density OTP memories [1]. For this application, the zapping current must be low enough to reduce the supporting circuitry and battery demands.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved current filament control during Zener diode zapping

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et al. 2012

Microelectronics Reliability

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved current filament control during Zener diode zapping

Roig

Lebon

Vandeweghe

et al. 2012

Microelectronics Reliability

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“…A shunt regulator can be used to model the regulator in the simulation (for example, based on a Zener diode). Although lateral Zener diodes can be implemented in standard CMOS processes [56], the shunt regulator is often implemented with transistors. However, all topologies are based on the same principle, which involves reducing the shunt resistance of a bypass transistor when the input voltage is below the desired output voltage.…”

Section: B Nfc Tag Ic Modelmentioning

confidence: 99%

Study on the Reading of Energy-Harvested Implanted NFC Tags Using Mobile Phones

et al. 2020

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In this paper we study the read range of implanted sensors based on batteryless, Near-Field Communication (NFC) integrated circuits (IC) using an NFC-equipped smartphone as a reader. The most important challenges are the low coupling between loops of different sizes, the limited quality factor imposed by the bandwidth communication, the effects of the body on propagation, and the detuning of the antennas. Two systems are analyzed: a conventional system based on resonant coupling between two coils; and a system based on resonant coupling between three coils. With the latter, a relay antenna is attached to a patch, which is adhered to the skin. Simulations and measurements show that the quality factor of both antennas can be improved by including a spacer made of low-permittivity material. A circuit model is proposed for the implanted and relay antenna, which simplifies its usage in circuit simulators. Some implanted and relay antenna prototypes are analyzed and a system model that includes a nonlinear model of the tag is used to analyze the maximum depth at which the implant can be read. Our experimental results show that the system based on three coils performs much better performance at longer distances and is more robust to misalignments between coils. A 15×15 mm-implanted tag with commercial NFC IC and energy harvesting can be read using commercial smartphones. It can feed sensors at a distance of up to 16 mm inside the body and at a distance of 3 cm from the skin. Our results also show that data previously stored in the IC memory can be transferred to the reader located at distances of up to 2 cm and 3.8 cm for the 2-coil and 3-coil systems, respectively. This study demonstrates the potential of batteryless NFC sensors for biomedical and wearable applications using mobile phones as readers. INDEX TERMS Batteryless, energy harvesting, Internet of Things (IoT), implantable medical device, nearfield communication (NFC), radiofrequency identification (RFID), wireless power transfer (WPT).

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“…These voltages have to be processed with special care to avoid breakdown of other junctions. In CMOS, a lateral zener diode can be constructed from adjacent n + and p + diffusions [23].…”

Section: Non-volatile Memory Technologymentioning

confidence: 99%