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Entry  Thu Mar 29 02:51:35 2018, Koji, Summary, BEAT, The design for a new beat PD  6x
    Reply  Mon Apr 2 00:15:34 2018, rana, Summary, BEAT, The design for a new beat PD  
       Reply  Wed Apr 4 02:06:45 2018, Koji, Summary, BEAT, First article of the CTN beat PD 7x
          Reply  Thu Apr 5 02:04:49 2018, Koji, Summary, BEAT, Compensation for MAX4107 at G=4.5 max_circuit.pdfIMG_3667.JPGIMG_3668.JPGIMG_3665.JPGCTN25_schematic_180404_KA.pdf
             Reply  Fri Apr 6 04:48:02 2018, Koji, Summary, BEAT, Compensation for MAX4107 at G=4.5 CTN25_transimpedance.pdfcurrent_noise_CTN25.pdfidet_CTN25.pdf
                Reply  Sun Apr 22 17:46:55 2018, awade, Summary, BEAT, Compensation for MAX4107 at G=4.5 D980454-01.pdf
Message ID: 2162     Entry time: Wed Apr 4 02:06:45 2018     In reply to: 2161     Reply to this: 2164
Author: Koji 
Type: Summary 
Category: BEAT 
Subject: First article of the CTN beat PD 

Made the first article of the 25MHz resonant PD for CTN experiment.

Performance:

Resonant frequency f_res = 26.0MHz
Transimpedance R_res = 2.3kOhm
Input referred curent noise = 10pA/rtHz
Shot noise intercept current = 0.29mA

Remarks:

MAX4107 at G=10 gives a gain peaking at 260MHz. It is not tamed as the dark spectrum shows the peak does not have significant RMS.
But this might cause a trouble later. We can consider to replace the opamp with ones suggested by Rana. Rana bought "THS4271" to give it a try.

Attachment 1: PD_circuit.pdf  47 kB  Uploaded Wed Apr 4 03:06:53 2018  | Hide | Hide all
PD_circuit.pdf
Attachment 2: CTN25_schematic_180403_KA.pdf  133 kB  Uploaded Wed Apr 4 03:07:02 2018  | Hide | Hide all
CTN25_schematic_180403_KA.pdf
Attachment 3: CTN25_PHOTO.JPG  2.668 MB  Uploaded Wed Apr 4 03:19:01 2018  | Hide | Hide all
CTN25_PHOTO.JPG
Attachment 4: liso_model.zip  8 kB  Uploaded Wed Apr 4 16:39:31 2018
Attachment 5: CTN25_transimpedance.pdf  94 kB  Uploaded Wed Apr 4 17:04:16 2018  | Hide | Hide all
CTN25_transimpedance.pdf
Attachment 6: current_noise_CTN25.pdf  28 kB  Uploaded Wed Apr 4 17:04:23 2018  | Hide | Hide all
current_noise_CTN25.pdf
Attachment 7: idet_CTN25.pdf  23 kB  Uploaded Wed Apr 4 17:04:29 2018  | Hide | Hide all
idet_CTN25.pdf
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