TELEDYNE JUDSON TECHNOLOGIESA Teledyne Technologies Company 1/2

TELEDYNE JUDSON TECHNOLOGIESA Teledyne Technologies Company

221 COMMERCE DRIVEMONTGOMERYVILLE, PA 18936-9641PHONE: 215-368-6901FAX: 215-362-6107www.teledynejudson.com

stinU5-APseireS 6-APseireS 7-APledoMPA-7-70 PA-7-60 PA-7-50 PA-6-60 PA-6-50 PA-5-50

Transimpedance High 107 106 105 106 105 105

deM:niaG 106 105 2.5x104 105 2.5x104 104 V/A(Switch Selected) Low 105 2.5x104 104 2.5x104 104 103

Bandwidth @ High Gain 8 60 150 60 150 200RD>10K� ,CD<0.2nF @ Med Gain 60 150 200 150 200 200 KHz(See Figs. 53-2, 53-3) @ Low Gain 150 200 200 200 200 200Input Offset Voltage (Vos) ±250 ±250 ±250 ±100 ±100 ±80 µVInput Bias Current (ib) ±0.001 ±0.001 ±0.001 ±12 ±12 ±30 nAVoltage Noise Density (en)@1KHz 12 12 12 4.5 4.5 1.1 nV Hz-1/2

Voltage Noise from 0.1 to 10Hz 1.5 1.5 1.5 .080 .080 .035 µVppCurrent Noise Density (in)@1KHz† .04 .13 .04 .5 .64 1 pA Hz-1/2

001 <ecnadepmI tuptuO �ppV01 ±egatloV tuptuO mumixaM

Am01 @ CDV21- dna V21+ stnemeriuqeR rewoPor +15V and -15VDC @ 10mA

Recommended for Detector Series: J16, J16TE1, J16TE2,J16D, J10D

J16, J12TE2,J12TE3

J12J12TE2

† At High Gain Setting

1 stSTAGEOUT

IN

+

-

HI

Vos

F2R

F3R

F1R

+

-

2 ndSTAGEOUT

inibenRD CD

PB 216April 2002

PA-5, PA-6 and PA-7PREAMPLIFIERSOperating Instructions

Equivalent Circuit for Transimpedance Preamplifiers

Teledyne Judson transimpedance preamplifiers are designed to get the best performance from Teledyne Judson Germanium, Indium Arsenide and Indium Antimonide detectors. Each amplifier has switch-selected variable gain as shown in the table below. Bandwidth depends on detector resistance and cap-acitance as shown on the attached graphs.CONNECTIONS:Input and output connectors are BNC feedthroughs.Power supply and ground connectionsare made through Lemo connector as shown on thereverse side of this sheet.

CONNECT DETECTOR BEFORETURNING ON POWER SUPPLY.CORRECT POWER SUPPLYPOLARITY MUST BE OBSERVED.REVERSAL MAY DAMAGEPREAMPLIFIER.

CAUTIONS:

Typical Specifications Model PA-5, PA-6 and PA-7 Current Mode Preamplifiers @ 25°C

TELEDYNE JUDSON TECHNOLOGIESA Teledyne Technologies Company 2/2

TELEDYNE JUDSON TECHNOLOGIESA Teledyne Technologies Company

221 COMMERCE DRIVEMONTGOMERYVILLE, PA 18936-9641PHONE: 215-368-6901FAX: 215-362-6107www.teledynejudson.com

Sys

tem

Ban

dwid

th 3

dB F

requ

ency

(Hz)

Detector Resistance (Ohm)

1K

10K

100K

1M103 V/A

102 103 104 105 10610

104 V/A 105 V/A

107 V/A

106 V/A

PA-5PA-6PA-7

10

10

10

10

10

10

-6

-7

-8

-9

-10

-11

10 10 10 10 10 10 102 3 4 5 6 7

Tota

l Dar

k C

urre

nt (A

mps

)

Detector Resistance R (Ohms)D

PA-5PA-6

PA-7

Preamp DC = I x Roffset D F

I + iD bVR

os

D

Sys

tem

Ban

dwid

th 3

dB F

requ

ency

(Hz)

Detector Capacitance CD (nf)

.01 .1 1 10 1001K

10K

100K

1M

Gain = 104 V/A

105 V/A

106 V/A

107 V/APA-5PA-6PA-7

10

8

6

4

2

0

Pre

amp

Noi

se F

igur

e (d

B)

Detector Resistance RD or Reactance (Ohms)10 102 103 104 105 106 107

PA-5

PA-6

PA-7

PA-9

PA-5, PA-6 and PA-7PREAMPLIFIERSOperating Instructions

Information in this document is believed to be reliable. However, no responsibility is assumed for possible inaccuracies oromission. Specifications are subject to change without notice.

System Bandwidth vs Detector ResistanceSystem Bandwidth vs Detector Capacitance

Preamplifier Noise Figure vs Detector Resistance DC Offset Output Voltage vs Source Resistance

PIN # DESCRIPTION 1 +12V or +15V2 N/C3 N/C4 -12V or -15V5 GND