Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

opamp diff. to single ended using bipolar

Status
Not open for further replies.

selvaraja

Full Member level 4
Joined
Jun 1, 2004
Messages
190
Helped
6
Reputation
12
Reaction score
3
Trophy points
1,298
Activity points
1,416
hi folks,

Can suggest any achitecture available to desgin diff. to single ended opamp using npn & resistor only ... pnp /pmos not availabe in thise process.

thanks in advance
 

wholx

Member level 4
Joined
Apr 20, 2005
Messages
76
Helped
4
Reputation
8
Reaction score
0
Trophy points
1,286
Activity points
2,050
i guess we can't use active loads in this process ?
 

selvaraja

Full Member level 4
Joined
Jun 1, 2004
Messages
190
Helped
6
Reputation
12
Reaction score
3
Trophy points
1,298
Activity points
1,416
yes ..we cant use active load ...because no pnp device available ..u only can be npn & resistors in these particular process.. so any architecture availabe to design diff. 2 single ended opamp by using these devices only.. thanks in advance
 

chu

Junior Member level 3
Joined
Jul 25, 2005
Messages
29
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,589
hi selvaraja,

u can use resistively loaded diff pair actually, but u will hav lower output impedance and voltage gain.
But this can be improve by using degenaration below the diff pair.

i do not know abt any other architecture, if somebody does, pls tell.
thx.

rgds,
chu
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top