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.

Voltage to Current Amplifier Circuits

Status
Not open for further replies.

daveirl

Newbie level 1
Joined
Jan 13, 2002
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Cork
Activity points
18
Hi,

I need some information on possible V/I conversion architectures. The signal bandwidth is 20MHz, and the supply voltage is 1.2 V.

I've tried using a degenerated differential pair but it doesn't meet the linearity spec. A degenerated diff. pair with opamps
doesn't have enough headroom at 1.2V. I've also investigated the Howland Current Pump circuit, but it doesn't meet the noise spec.

I'd really appreciate any advice you could give me( papers, references, architecture types etc..).

Thanks,
Dave.
 

avlsi

Member level 3
Joined
Jan 27, 2006
Messages
58
Helped
3
Reputation
6
Reaction score
1
Trophy points
1,288
Activity points
1,797
Did u try folded cascode with source degeneration. Use High Swing Cascode at the ouptut.This will solve ur problem for sure. 20 MHz is easily acheiveable.
 

v_c

Advanced Member level 2
Joined
Oct 11, 2005
Messages
514
Helped
113
Reputation
226
Reaction score
37
Trophy points
1,308
Location
Chicago, IL, USA
Activity points
8,229
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top