Teledyne PA-300 Operating Instructions

PA-300
PREAMPLIFIERS

Operating Instructions

2 1/2"
Specifications
Bandwidth: First Stage - DC to 1.0MHz
Second Stage - 200Hz to 100KHz, AC coupled
Gain: First Stage(V/A) - 100(LO), 300(MED), 1000(HI)
Second Stage - x10
Noise Density (NV/� Hz): 1.5
Output Impedance: - 100�
Maximum Output Voltage: ± 10V P-P
Power Requirements: ± 15V DC @ 200mA
Bias Voltage (internally supplied): +15V
Size: 2 1/2" x 4 1/8" x 1 3/4"
Power Connector: 3 pin circular miniature DIN
Description
Teledyne Judson's PA-300 DC-coupled preamplifiers are
designed for operation with photoconductive HgCdTe
detectors. The preamps offer low noise, adjustable gain,
DC offset compensation and a linearizing network.
The PA-300 applies a constant bias voltage V across
the detectorto produce a current signal.
i
signal
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
7/8"
3/8"
R BIAS
R B
(BIAS)
INPUT
7/8"
7/8"
nom.
1 3/4"
nom.
1 5/8"
B
V
B
=
� R
D
4 1/8"
PA-300
+15V GAIN SELECT
HIGH
MED
LOW
FIRST
STAGE
OUT
SECOND
STAGE
-
OUT
X10
+
LIN
R
LIN
BIAS
ADJUST
ADJUST
+15V -15V
3"
+15 -15
AMP
GND
Power Requirements
The PA-300 comes with a miniature DIN connector and is
connected as follows.
+15V
The PA-300 is supplied with a cable where
Wire
red
black
green
Because the main power supply also provides the detector
bias, a low-noise power supply is critical. Any fluctuations
in the bias will appear as detector noise. Batteries are
strongly recommended. A well-filtered power supply may
also be used.
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
PB 3207
December 2002
R LIN
-15V
Ground
Power
+15
-15
ground
221 COMMERCE DRIVE
MONTGOMERYVILLE, PA 18936-9641
PHONE: 215-368-6901
FAX: 215-362-6107
www.teledynejudson.com
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