Continue to Site

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.

How to convert V/#electron to V/V or V/I?

Status
Not open for further replies.

melkord

Full Member level 2
Joined
May 18, 2018
Messages
146
Helped
0
Reputation
0
Reaction score
1
Trophy points
18
Activity points
1,690
I found that the gain is defined as [V/#electron]?
How can I convert this to V/V or V/I?

As I understand it, I need capacitance information to convert #electron to voltage using V = Q/C = (q x #electron)/C.
 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
50,786
Helped
14,600
Reputation
29,475
Reaction score
13,680
Trophy points
1,393
Location
Bochum, Germany
Activity points
290,842
If you are asking about charge sensitive amplifier, the three gain numbers are not directly related. V/Q is set by a capacitance, V/I by a bias resistor. V/V is set by amplifier voltage gain.
 

melkord

Full Member level 2
Joined
May 18, 2018
Messages
146
Helped
0
Reputation
0
Reaction score
1
Trophy points
18
Activity points
1,690
If you are asking about charge sensitive amplifier, the three gain numbers are not directly related. V/Q is set by a capacitance, V/I by a bias resistor. V/V is set by amplifier voltage gain.
Yes, i am reading about the CSA used in electron counter applications.
V/#electron is commonly used.
But I am not sure how to simulate the circuit because the input is in voltage.
Any suggestion of referrence that I can see?
 

Dominik Przyborowski

Advanced Member level 4
Joined
Jun 6, 2013
Messages
1,174
Helped
501
Reputation
1,006
Reaction score
496
Trophy points
1,363
Location
Norway
Activity points
8,836
CSAs are integrators. Your input is a charge, more precisily Dirac delta current pulse. Use ipulse source with 0 period, very short rise/fall time and amplitude set to desired charge/pulse area
 

D.A.(Tony)Stewart

Advanced Member level 5
Joined
Sep 26, 2007
Messages
7,096
Helped
1,727
Reputation
3,453
Reaction score
1,737
Trophy points
1,413
Location
Richmond Hill, ON, Canada
Activity points
52,023
WHat is the source capacitance and voltage or current you are trying to sense and what dV/dt or dI/dt are you trying to detect and output characteristics please too. Cfb/Cs is the gain of a charge amp but the integration needs R feedback to reduce DC offset also limits the low frequency cutoff. Which is TBD in your spec.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top