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Amplifier Frequency Response
Amplifier Frequency Response

... there are parasitic effects that are commonly encountered even at much lower frequencies. In this subsection, we will discuss a few of these effects and present models that can be used for passive devices if the effects are significant. We will discuss discrete and integrated passive elements separa ...
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... Chip Enable. A logic low on this pin powers down the device and puts the charge pump into three-state mode. Taking the pin high powers up the device depending on the status of the power-down bits. Charge Pump Output. When enabled, this provides ± ICP to the external loop filter, which in turn drives ...
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... charge current of 1.6mV / RSNS is measured from SNS to VSS. The DS2784 exits Sleep mode upon charger connection and VIN ≥ VUV or a low to high transition on DQ. The bus-low condition, where the DQ pin is low for tSLEEP, indicates pack removal or system shutdown in which the 1-Wire bus pullup voltage ...
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... The power supply is +5V and is attached on the p side of D1. The n side of D1 is attached to the p side of D2. So, there is sufficient voltage and with the correct polarity from the power supply to turn on both diodes. A check to verify that both diodes are conducting – the open circuit voltage for ...
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i `[105
i `[105

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... Unlike other switching devices such as thyristors, switchgear or power bipolar transistors, parallel MOSFET generated current unbalance has inherent limits provided the gate-to-source voltages are the same. Limit functions are derived for ON resistance, gain and threshold voltage mismatch. Gate-sour ...
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... Chip Enable. A logic low on this pin powers down the device and puts the charge pump into three-state mode. Taking the pin high powers up the device depending on the status of the power-down bits. Charge Pump Output. When enabled, this provides ± ICP to the external loop filter, which in turn drives ...
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... Q13. A single loop circuit contains two external resistors and two emf sources as shown in the figure 1. Assume the emf sources are ideal, what is the power dissipation across resistor R1. (Ans: 0.9 W) Q14. A capacitor of capacitance 5.0x10-6 F is discharging through a 4.0 M Ω resistor. At what time ...
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i ?g 255` i
i ?g 255` i

... both. Hereinafter, the respective function blocks will be described generally from a viewpoint of the functions. Those skilled in the art should recognize that these functions can be realized in various ways, and any such way is included in the scope of the embodiments. The respective function block ...
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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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