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ADCMP608 (Rev. 0)
ADCMP608 (Rev. 0)

... by keeping the capacitive load at or below the specified minimums. The output of the AD8468 is designed to directly drive one Schottky TTL, three low power Schottky TTL loads, or the equivalent. For large fanouts, buses, or transmission lines, use an appropriate buffer to maintain the excellent spee ...
FPF2300/02/03 Dual-Output Current Limit Switch F P
FPF2300/02/03 Dual-Output Current Limit Switch F P

... lockout), and thermal shutdown protection per each switch. In the event of an over-current condition, the load switch limits the load to current limit value. The minimum current limit is set to 1100mA. ...
BD9862MUV
BD9862MUV

Impact of the Excess Base Current and the Emitter Injection
Impact of the Excess Base Current and the Emitter Injection

Colpitts oscillator
Colpitts oscillator

... resistance term, oscillation is possible. This method will be used here to determine conditions of oscillation and the frequency of oscillation. An ideal model is shown to the right. This configuration models the common collector circuit in the section above. For initial analysis, parasitic elements ...
BDTIC
BDTIC

... Design Example ............................................................................................................................28 Vcomp and M1, M2 value at full load condition ............................................................................29 ...
Cascaded Multilevel Inverter for PV Cell Application
Cascaded Multilevel Inverter for PV Cell Application

CMOS Biasing Circuits
CMOS Biasing Circuits

... The values of the sizes of the MOS transistor are a result from the designer’s dimensioning and can be implemented fairly exact in the chip. This is the reason current mirror circuits to be widely used in practice. Current mirrors usually employ the same length for all of the transistors in order to ...
TPS40020 数据资料 dataSheet 下载
TPS40020 数据资料 dataSheet 下载

High Output Differential Drive Operational
High Output Differential Drive Operational

... When using the TLV4120 to drive heavy differential loads, care must be taken not to saturate the output of the first amplifier, as the second amplifier will produce a mirror image (about VDD/2) of the first amplifier’s output. This can lead to asymmetrical differential output swings. This differenti ...
MAX4030E/MAX4031E Low-Cost, 144MHz, Dual/Triple Op Amps with ±15kV ESD Protection General Description
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... design of equipment that meets the highest level (level 4) of IEC 1000-4-2 without the need for additional ESD protection components. The major difference between tests done using the Human Body Model and IEC 10004-2 is higher peak current in IEC 1000-4-2. Because series resistance is lower in the I ...
TLC5618A 数据资料 dataSheet 下载
TLC5618A 数据资料 dataSheet 下载

UCC28019A 数据资料 dataSheet 下载
UCC28019A 数据资料 dataSheet 下载

... drive if the peak-limit voltage is exceeded. An internal 1.5-µA current source pulls ISENSE above 0.1 V to shut down PFC operation if this pin becomes open-circuited. Use a 220-Ω resistor between this pin and the current sense resistor to limit inrush-surge currents into this pin. ...
SIMULATIONS OF SERIES RESONANCE CIRCUIT POWER ELECTRONICS COLORADO STATE UNIVERSITY
SIMULATIONS OF SERIES RESONANCE CIRCUIT POWER ELECTRONICS COLORADO STATE UNIVERSITY

MAX9922/MAX9923 Ultra-Precision, High-Side Current-Sense Amplifiers General Description
MAX9922/MAX9923 Ultra-Precision, High-Side Current-Sense Amplifiers General Description

... specified over a VSENSE range that keeps the output voltage 250mV away from the rails to achieve full accuracy. Output of the part is rail-to-rail, and goes to within 25mV of the rails, but accuracy is not maintained. Linear operation is not guaranteed for VSENSE voltages > ±150mV. See the Typical O ...
Operational Amplifiers
Operational Amplifiers

MAX14840E/MAX14841E 40Mbps, +3.3V, RS-485 Half-Duplex Transceivers General Description
MAX14840E/MAX14841E 40Mbps, +3.3V, RS-485 Half-Duplex Transceivers General Description

... Note 4: DV­OD and DVOC are the changes in VOD and VOC, respectively, when the DI input changes state. Note 5: Capacitive load includes test probe and fixture capacitance. Note 6: The timing parameter refers to the driver or receiver enable delay when the device has exited the initial hot-swap pro ...
TPS2375 数据资料 dataSheet 下载
TPS2375 数据资料 dataSheet 下载

... RTN: This pin provides the switched negative power rail used by the downstream circuits. The operational and inrush current limit control current into the pin. The PG circuit monitors the RTN voltage and also uses it as the return for the PG pin pulldown transistor. The internal MOSFET body diode cl ...
FEATURES PIN ASSIGNMENT
FEATURES PIN ASSIGNMENT

... is first applied by the user. This parameter is assured by component selection, process control, and design. It is not measured directly during production testing. 10. Each DS1245 has a built-in switch that disconnects the lithium source until VCC is first applied by the user. The expected tDR is de ...
ADuM5401 英文数据手册DataSheet下载
ADuM5401 英文数据手册DataSheet下载

1.5A, 24V, 17MHz POWER OPERATIONAL AMPLIFIER OPA564 FEATURES
1.5A, 24V, 17MHz POWER OPERATIONAL AMPLIFIER OPA564 FEATURES

... degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not supported. Input terminals are diode-clamped to the power-supply rails. Signals that can swing more than 0.4V beyond the supply rails shoul ...
Starting Performance of Synchronous Motors
Starting Performance of Synchronous Motors

Junction Field Effect Transistor (JFET)
Junction Field Effect Transistor (JFET)

... For a constant vGG, the effect of vDD variation may be illustrated as follows: ¾ vDD must be greater than zero for current to flow in the direction defined in an n-channel JFET. The applied vDD, or the voltage between drain and source (ground) appears as a voltage drop across the length of the chann ...
MAX1705/MAX1706 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator
MAX1705/MAX1706 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator

... The MAX1705/MAX1706 are high-efficiency, low-noise, step-up DC-DC converters with an auxiliary linearregulator output. These devices are intended for use in battery-powered wireless applications. They use a synchronous rectifier pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V ou ...
ics85401.pdf
ics85401.pdf

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Wilson current mirror



A Wilson current mirror is a three-terminal circuit (Fig. 1) that accepts an input current at the input terminal and provides a ""mirrored"" current source or sink output at the output terminal. The mirrored current is a precise copy of the input current. It may be used as a Wilson current source by applying a constant bias current to the input branch as in Fig. 2. The circuit is named after George R. Wilson, an integrated circuit design engineer who worked for Tektronix. Wilson devised this configuration in 1967 when he and Barrie Gilbert challenged each other to find an improved current mirror overnight that would use only three transistors. Wilson won the challenge.
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