what's a widlar current source ?

widlar current source

i have read a couple of books on widlar current source.......... i am totally confused with this. Can you suggest me some futher web links and some other books on widlar current source.........

Thanks in advance..............

desperado1

widlar mirror

From: https://everything2.com/?node_id=1306226

A Widlar current source is used in analog integrated circuit design to produce a small driving current without the use of large resistors. This is particularly important because it is difficult to produced large resistors on chip that have good tolerances, meaning that it is very difficult to get predictable, reliable currents using large resistors.

The Widlar source uses two transistors fabricated with their bases connected together, and two small resistors. One of the transistors has its base connected to its collector, forming a diode connected transistor.

and from: https://en.wikipedia.org/wiki/Widlar_current_source

A Widlar current source is a modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor, enabling the current source to generate low currents using only moderate resistor values.

The Widlar circuit may be used with bipolar transistors, MOS transistors, and even vacuum tubes. An example application is the 741 operational amplifier, and Widlar used the circuit as a part in many designs.

This circuit is named after its inventor, Bob Widlar, and was patented in 1967.

Hope it helps!

widlar current mirror

if u want good books on this topic, this is the list of some good authors. i do not recollect the exact title of the book. but if u search with the words " Analog VLSI design" i think u will get the exact title......

1) Backer

2)Geiger

3)Razavi

4) Allen holberg

These autours r greats of analog VLSI design.............

widlar current

thank u guys 4 ur answers

application of widlar current source

The book "Analysis and Design of Analog Integrated Circuits" by P. Gray, P. Hurst, S. Lewis and R. Meyer will be very helpful

application on widlar current source

saruman1983 said:

The book "Analysis and Design of Analog Integrated Circuits" by P. Gray, P. Hurst, S. Lewis and R. Meyer will be very helpful

Click to expand...

Do you have the link to this book mate................. i will be highly obliged if you could send me the link.........
thanks in advance.

widlar mos

Sorry, i don't have a link. But, if you find it elsewhere, it would be useful to know that the solutions manual is on some post on edaboard and i have it too, so don't hesitate to ask

Regards
vag

two transistor current source

A Widlar current source is a modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor, enabling the current source to generate low currents using only moderate resistor values.

The Widlar circuit may be used with bipolar transistors, MOS transistors, and even vacuum tubes. An example application is the 741 operational amplifier,[4] and Widlar used the circuit as a part in many designs.[5]

This circuit is named after its inventor, Bob Widlar,

widlar current mirror design

saruman1983 said:

Sorry, i don't have a link. But, if you find it elsewhere, it would be useful to know that the solutions manual is on some post on edaboard and i have it too, so don't hesitate to ask

Regards
vag

Click to expand...

please send me the link of the solution manual. i found a hard copy of the book.

widlar current mirror

**broken link removed**

widlar current source

thanks mate..............how can we search books in rapidshare.com ?

transistor current source

google it, you will surely find something

widler current source

is there any specific way to search books on rapidhshare.com through google.com

current mirror widlar

https://rapidshare-search-engine.com/