New PDF release: Current Sense Amplifiers: for Embedded SRAM in

By Bernhard Wicht

This ebook presents a scientific and finished perception into present sensing thoughts. as well as describing theoretical and useful points of present sensing, the writer derives useful layout instructions for reaching an optimum functionality via a scientific research of alternative circuit ideas. Voltage experience amplifiers also are thought of, on account that they're used as a last comparator in a present feel amplifier. leading edge thoughts, reminiscent of repayment of the bitline multiplexer and auto-power-down, are elucidated. even if the point of interest is on embedded static random entry reminiscence (SRAM), the fabric provided applies to any current-providing reminiscence kind, e.g. additionally to rising reminiscence applied sciences similar to MRAM. The e-book will entice layout engineers in and likewise to researchers wishing to profit approximately, and follow, present sensing techniques.

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Additional resources for Current Sense Amplifiers: for Embedded SRAM in High-Performance System-on-a-Chip Designs

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SO delay and yield can be adjusted independently. 31Jm ......

10) Vo is a linear function of ~VIN. 8). Therefore, the delay gets less sensitive to changes of ~ VI N if V D D and the W / L-ratio of M9 are increased. 2 summarizes the influence of the most important parameters on yield and delay based on the analysis within Sect. 2. A large input difference ~VIN is always of advantage, but it is limited due to its own generation delay (bitline discharge or current sensing). The input dc voltage VI N DC has most impact on yield while the geometry of the turn-on transistor M9 and the temperature T is of minor influence.

11 using identical parameters as for Type A in Fig. 6. Obviously the output current develops much faster due to the feedback voltage amplifier. 13) cannot be achieved. This will be investigated in detail in Sect. 3. Corresponding to the gain overshot in the frequency domain, Fig. 3 Type B - Regulated Cascode 47 some amount of ringing. However, since the coefficients in the denominator of G( s) are greater than zero, the system is always stable. For practical designs the damping D must not be to small to keep ringing low.

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