Current Sources and Voltage References

Using CMOS linear arrays to create current sources

Using Analog CMOS Arrays to Create Current Sources

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the value of C

iss

. Because C

iss

is unaffected by temperature effects, neither is the

CMOS FET’s switching speed.

Remember that a MOSFET has an isolated capacitive gate and that being essentially

a capacitor, it takes time to charge or discharge that capacitance, as well as to support

a certain amount of charge. It works in the following way: Assuming that an N-channel

MOSFET is connected with a 10-volt positive supply voltage at the drain, a source that

is grounded, and the gate temporarily at ground, if the gate is now connected to the

positiv ...