Preamplifiers Temperature Controllers Thermoelectric Coolers

Preamplifiers Temperature Controllers Thermoelectric Coolers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Preamplifiers
Temperature Controllers
Thermoelectric Coolers
Teledyne Judson Technologies LLC
221 Commerce Drive
Montgomeryville, PA 18936 USA
Tel: 215-368-6900
Fax: 215-362-6107
Visit us on the web.
ISO 9001 Certified
www.teledynejudson.com
1/14
Preamplifiers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
General
Noise Sources
The following pages describe the
amplifier circuits recommended for
Teledyne Judson photovoltaic and
photoconductive detectors.
Figure 50-1 shows the various noise
sources of the detector/preamp system.
Values for the preamp noise sources en,
in, Vos and ib are listed in the specification
tables for each Teledyne Judson currentmode preamplifier.
The preamp noise sources, together
with the detector characteristics,
determine the system noise.
While a complete analysis of detector
system noise is beyond the scope of this
guide, the effects of the various noise
sources can be summarized by the
following approximation:
Current Mode Preamplifiers
The transimpedance (or current-mode)
preamplifier circuit of Fig. 50-1 is
recommended for most PV detector
applications, for frequencies up to 1 MHz.
It offers lowest noise and best linearity
under a wide range of conditions.
The characteristics of the op-amp
circuit maintain the diode near 0V bias.
All the photocurrent from the detector
essentially flows through the feedback
resistor RF.
The feedback capacitance CF is added
to control gain peaking (Fig. 50-2). The
value of CF depends on the detector
capacitance. It is installed at the factory to
provide stable preamplifier performance
with a particular detector model.
The values of RF and CF, together with
the detector characteristics RD and CD,
determine the overall frequency response
of the system (Figs. 51-2, 51-3, 53-2, 533).
Figure 50-1
Op-amp Circuit for PV Detectors
CF
Preamplifier
RF
Photodiode
Equivalent
Circuit
IIN
e
n
-
+
RD C
D
Ib
In
Vo =
IIN x RF
Normalized Responsivity
Uncompensated
(no CF)
1
0.1
Fully
Compensated
(correct CF)
Frequency (Hz)
ZD2
+ in2 +
4kT
RD
+
4kT
RF
1/2
ZF
where k is Boltzmann's constant and T is
temperature in degrees Kelvin.
This simplified noise equation provides
a good approximation of the total voltage
noise density (V/Hz1/2) at the preamplifier
output. Note that the noise is dependent
on the frequency f, and is normalized to a
1 Hz noise bandwidth.
The four terms in the brackets
represent the four main sources of current
noise:
• Preamplifier noise voltage en divided
by the detector reactance ZD, where
ZD = RD/(1+ (2� f)2 CD2 RD2)1/2
• Preamplifier current noise in
• Johnson thermal current noise from
the detector shunt resistance RD
• Johnson thermal current noise from
the preamp feedback resistance RF
The total current noise is then
multiplied by the transimpedance gain ZF,
where
Vos
Figure 50-2
Illustration of Preamp Gain Peaking
10
Total en(f) �
en 2
ZF = RF/(1+ (2� f)2 CF2 RF2)1/2
Partially
Compensated
Analysis of the simplified noise
equation shows the following:
• In situations where ZD is large
(>10K� ) the preamplifier current noise in
is more important than the voltage noise
en. This is generally the case when using
high-impedance detectors (InSb, cooled
Ge, small-area Ge) at moderate
frequencies. Choose a preamp with low in.
• In situations where ZD is small (<1k� ),
the preamp voltage noise en becomes
more important. This is generally true with
low-impedance detectors (InAs, large-area
Ge). Choose a preamp with low en.
• Larger RF adds less current noise. For
highest sensitivity, RF should be greater
than RD when practical.
Preamp Noise Figure
A general method for evaluating noise
performance of a preamplifier is the noise
figure, NF, which indicates what portion of
the system noise is caused by the preamp.
NF = 10 log10
Total Noise
Detector Noise
A perfect preamplifier has a Noise
Factor of 0 dB, indicating that the preamp
noise contribution is negligible compared
to the detector noise. A NF of 0.1 to 3 dB is
considered satisfactory. Preamps with NF
>3 dB add significant noise to the system.
See Fig. 53-1 for noise figures of
Teledyne Judson transimpedance preamplifiers at 1 KHz.
DC Applications: Offset Drifting
In DC applications, the preamp input
bias current Ib and input offset voltage Vos
become important. In an ideal op-amp, Ib
and Vos are zero. In reality they have nonzero values. Together with the detector RD
they produce a "dark current" ID:
ID = Ib + (Vos/RD)
The DC offset voltage at the preamp
output is equal to ID x RF.
Ib and RD each have a non-linear
dependence on temperature. The offset
voltage at the preamplifier output will
therefore drift with temperature changes.
To minimize offsets and drifting:
• For high-impedance detectors, choose
a preamp with low Ib.
• For low-impedance detectors, choose
a preamp with low Vos.
• Consider stabilizing the detector
temperature by using one of Teledyne
Judson's integral TE-cooler packages.
2/14
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Description
Features
The PA-9 preamplifier is ideal for highfrequency performance with high-impedance photovoltaics such as cryogenically
cooled InSb and Ge.
The PA-9 offers low current noise and
ultra-low voltage noise. However, its
relatively high DC offset voltage makes it
less suitable for DC applications than
other Teledyne Judson preamps.
The PA-9 has fixed gain. When ordered
with a detector, the preamp is matched to
the detector for maximum gain and
sensitivity. Alternatively, the customer may
specify gain or minimum required bandwidth.
Bandwidth is a function of detector
resistance and capacitance as well as
preamp gain (Figs. 51-2 and 51-3).
• Superior High-Frequency
Performance (500Hz to 1MHz)
• Ultra-low Voltage Noise
• Ideal for PV detectors:
J10D, J16D and J16TE2
Figure 51-1
PA-9 Preamplifier
1.0
PA-9 Transimpedance Preamplifier
RF
DC Coupled Out
1st
- Stage
In
2nd Stage
20dB Gain
+
+12V
Gain Stages
/A
7 V
10K
.01
.1
A
1
10
100
Detector Capacitance CD (nf)
Input and output connections are BNC
feed-throughs. The power jack is a 5-pin
female Amphenol connector; the mating
male Amphenol connector is provided.
Figure 51-3
PA-9 Bandwidth vs Detector Resistance
5
15 4
3
2
1st Stage
Gain
(V/A)
1st Stage Bandwidth
(Maximum)
See Figs. 51-2, 51-3
PA-9-70
107
DC to 100KHz
PA-9-60
106
DC to 300KHz
PA-9-50
5
Model
10
PA-9-44
2.5x10
DC to 750KHz
4
DC to 1MHz
Typical Specifications Model PA-9 Preamplifiers
1M
100K
V/A
10 5
V/A
2nd Stage Gain
V/A
/
6 V
PA-9
4
Gain/Bandwidth Specifications Model PA-9 Preamplifier
Connections
PA-9
10K
1K
10
2nd Stage Bandwidth
Voltage Noise Density
@1KHz
1.5
Voltage Noise
from 0.1 to 10 Hz
1.0
7
nV Hz
-1/2
µVpp
10 4
10 5
10 6
Detector Resistance RD (Ohms)
-1/2
0.04
pA Hz
Input Offset Voltage
±2
mV
Input Bias Current
±1
pA
Maximum Output
14
Vpp
< 50
�
VDC
mA
Output Impedance
100
dB
~5Hz to ~1/2 of
1st Stage Bandwidth
@ 1KHz, 10 Gain †
10 3
20
Current Noise Density
10 7
/A
5 V
10
10
100K
1
3.0
AC Coupled Out
Power Supply Connector
Lemo 5-Pin Female
10 6
1M
10
System Bandwidth 3dB Frequency (Hz)
Figure 51-2
PA-9 Bandwidth vs Detector Capacitance
-12V
Power Jack
System Bandwidth 3dB Frequency (Hz)
The PA-9 has a first stage transimpedance gain and a second stage voltage
gain. Output from each stage is accessible.
Normal first stage gain is 107, 106, 105
or 2.5 x 104 V/A. For lowest noise, choose
the highest gain possible to achieve the
desired bandwidth. (Note: when used with
an InSb detector, first-stage gain must be
low enough to avoid DC saturation from
the detector Background Current IBG.)
The second stage is normally AC
coupled with a 20dB gain (~10x). It may be
DC coupled per customer specifications.
BNC Connector
UG-625
4.5
Power Requirements
+12 and -12
20
† Lower gain increases Current Noise Density
3/14
Preamplifiers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
PA-6
General
Current Mode Preamplifiers convert the
current output of a photovoltaic Ge, InAs,
or InSb detector into a voltage output. They
amplify the signal for subsequent use with
oscilloscopes, lock-in amplifiers, or A-to-D
converters.
Three different preamp models each
offer specific advantages, depending on
detector type and bandwidth requirements.
A comparison of preamp noise figure as a
function of detector reactance is graphed
in Fig. 53-1.
All units (except multi-channel models)
have switch-selectable gain.
PA-5
The PA-6 is a general purpose
preamplifier recommended for intermediate shunt resistance (400� <RD<50K� )
detectors, including large area J16 Series
room temperature Ge. The PA-6 has very
low voltage noise and offset voltage,
which significantly reduces low-frequency
noise and DC drift. Standard gain settings
are listed in the specification table below;
custom gain settings are available.
The PA-5 is recommended for low
impedance detectors (RD<400� ), including J12 Series room temperature InAs
and J12TE2 Series InAs. It has extremely
low voltage noise and low voltage offset.
However, its high current noise and
current offset make it unsuitable for
detectors with high impedance.
Standard gain is 105, 104, and 103 V/A
(switch-selectable). Custom gain settings
are available.
Figure 52-1
Equivalent Circuit for Transimpedance Preamplifier
PA-7
The PA-7 is an excellent general
purpose preamplifier for most high shunt
resistance (RD > 25K� ) detectors,
including small area J16 Series Ge and all
J16TE2 Series cooled Ge. It has extremely
low current noise and current offset.
For most applications, the PA-7-70 with
high gain of 107 V/A offers best performance and versatility. However, for applications where 107 V/A gain is unusable (due
to bandwidth or DC saturation), the PA-760 or PA-7-50 are suitable alternatives.
Typical Specifications Model PA-5, PA-6 and PA-7 Current Mode Preamplifiers @25°C
PA-7 Series
Model
PA-6 Series
PA-5
Units
PA-7-70 PA-7-60 PA-7-50 PA-6-60 PA-6-50 PA-5-50
7
10
6
10
Transimpedance
High
10
Gain:
Med
10
(Switch Selected)
Low
5
10
6
10
5
5
6
4
2.5x10
10
4
10
5
2.5x10
4
5
10
10
2.5x10
4
4
4
10
5
10
4
3
2.5x10
10
10
Bandwidth
@ High Gain
8
60
150
60
150
200
RD>10K� ,CD<0.2nF
@ Med Gain
60
150
200
150
200
200
(See Figs. 53-2, 53-3)
@ Low Gain
V/A
KHz
150
200
200
200
200
200
±250
±250
±250
±100
±100
±80
±0.001
±0.001
±0.001
±12
±12
±30
nA
Voltage Noise Density (en)@1KHz
12
12
12
4.5
4.5
1.1
nV Hz
Voltage Noise from 0.1 to 10Hz
1.5
1.5
1.5
.080
.080
.035
Current Noise Density (in)@1KHz†
.04
.13
.04
.5
.64
1
Input Offset Voltage (Vos)
Input Bias Current (ib)
µV
-1/2
µVpp
-1/2
pA Hz
Output Impedance
< 100
�
Maximum Output Voltage
± 10
Vpp
Power Requirements
Recommended for Detector Series:
†
+12V and -12VDC @ 10mA
J16, J16TE1, J16TE2,
J16D, J10D
J16, J12TE2,
J12TE3
J12
J12TE2
At High Gain Setting.
4/14
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Figure 53-1
Preamplifier Noise Figure @ 1kHz
Figure 53-2
System Bandwidth vs Detector Capacitance
(See page 44)
Figure 53-3
System Bandwidth vs Detector Resistance
Total Dark Current (Amps)
Figure 53-4
Dark Current vs Resistance and Preamp
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
ID �
System Bandwidth 3dB Frequency (Hz)
System Bandwidth 3dB Frequency (Hz)
1M
Gain = 104 V/A
100K
105 V/A
106 V/A
10K
PA-5
PA-6
PA-7
1K
.01
107 V/A
.1
1
10
1M
103 V/A 104 V/A
105 V/A
106 V/A
100K
107 V/A
10K
1K
10
PA-5
PA-6
PA-7
102
103
104
105
106
Detector Resistance (Ohm)
100
Detector Capacitance CD (nf)
Vos
+ ib
RD
PA-5
PA-6
PA-7
Preamp DC offset = I D x R F
10
10
2
10
3
10
4
10
5
10
6
10
7
Detector Resistance R D (Ohms)
PA-7:4C, PA-7:16C,
and PA-7:32C
Figure 53-5
PA-7:4C, PA-7:16C and PA-7:32C Multi-channel Preamplifier
Output Connector
ITT Cannon DCSF-37S
Multi-Channel Preamplifiers
The PA-7:4C, PA-7:16C and PA-7:32C
Series multi-channel preamplifiers are
designed primarily for use with Teledyne
Judson's Germanium Array Series and X-Y
Sensors. The preamp gain is fixed as specified at the time of purchase. Standard gain
7
6
settings are 10 or 10 V/A; others are
available on a custom basis.
While zero-volt bias is recommended for
J16P Series arrays in most applications,
the preamp is also available with an
optional detector bias adjust. Biasing the
photodiodes improves response time and
high-power linearity, but also increases
dark current.
2.3
Vbias Adjust
3.0
(Optional)
Input Power Connector
Amphenol 5-pin
Typical Specifications Multi-Channel Preamplifiers
PA-7:4C-70
# of
Channels
Gain
(V/A)
Bandwidth (Max)
See Figs. 53-2, 53-3
4
PA-7:16C-70
16
PA-7:32C-70
32
PA-7:4C-60
4
PA-7:16C-60
16
PA-7:32C-60
32
PA-5:4C-1E3
4
±200
µV
±40
pA
18nVHz-1/2
Voltage Noise Density (en) @1KHz
Input Socket accepts Teledyne
Judson "40P" Package
Model
Input Offset Voltage (Vos)
Input Bias Current (ib)
10
7
DC to 10KHz
Voltage Noise from 0.1 to 10 Hz
Current Noise Density† in @ 1KHz
Output Impedance
Maximum Output Voltage
Power Requirements
7
DC to 60KHz
10
3
DC to 200KHz
µVpp
.01pAHz
-1/2
< 100
�
±10
Vpp
±15
VDC
PA-7:4C (4 channel)
@ 40
ma
PA-7:16C (16 channel)
@ 40
ma
PA-7:32C (32 channel)
@ 80
ma
Use with Detector Series:
10
2
Ge Arrays
† At Gain = 107 V/A. Lower gains increase Current Noise Density.
5/14
Preamplifiers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
PA-300
General
Voltage Mode Preamplifiers may be
used with photoconductive HgCdTe or
with low-impedance photovoltaics such
as InAs.
With photoconductive detectors, a
constant bias current or constant bias
voltage is applied across the detector
element. The element changes resistance in response to incident photons,
and the resulting change in voltage is
amplified by the preamp. A blocking
capacitor or DC offset circuit is required to
block the constant DC bias.
With photovoltaic detectors, the
photocurrent generated in the detector
induces a voltage across the preamp
input impedance. This voltage is amplified. A lower input impedance generally
results in faster frequency response, but
also adds more noise to the system.
PA-101
HgCdTe Preamplifier (5 Hz - 1 MHz)
The Model PA-101 low-noise voltage
preamplifier is recommended for all J15
Series HgCdTe detectors.
An external bias resistor is used to set
the constant bias current required for PC
detector operation.
When purchased with a detector, the
preamp includes a bias resistor factoryselected for optimum detector performance. When ordering the preamp
separately, please specify detector
resistance and required bias current.
The Model PA-101 may also be used
without bias for J12 Series InAs.
HgCdTe Preamplifier (DC - 1.0 MHz)
The Model PA-300 current preamplifier is designed for operation with J15D
Series HgCdTe detectors.
The PA-300 is designed using a
bridge circuit on the front end of an
operational amplifier to deliver constant
bias voltage across the detector.
The PA-300 is recommended for
detectors used over a wide dynamic
range in applications including FTIR's
and laser monitoring. The PA-300 also
has a first order linearity correction in the
form of a positive feedback resistor.
PA-8200
PbS and PbSe Preamplifier
The Model PA-8200 low-noise voltage
preamplifier is recommended for all J13
and J14 Series detectors. A load resistor
is selected to match the detector resistance.
Preamp gain and typical bandwidth
specifications are listed in the table
opposite. For best results, choose the
preamp model with the narrowest suitable
bandwidth to keep preamp noise to a
minimum.
6/14
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Typical Specifications Teledyne Judson Voltage Mode Preamplifiers
Model
Gain
Bandwidth
(Hz)
Input Noise
Input
Voltage
Impedance
(nV Hz
-1/2
)
Max. Output
(Load 1K )
( )
(Vpp)
Detector
Bias
Power
Requirement
Case
Dimensions
(VDC)
(mA)
(Excluding Connectors)
PA-101
1st x100 2nd x10
10Hz to 1MHz
1.5
10K
10
Built-in
±15
200
4.125" x 2.5" x 1.75"
PA-300
100, 300, 1000
DC to 1.0MHz
1.5
100K
10
Built-in
±15
200
4.125" x 2.5" x 1.75"
PA-8200
12 to 300
10KHz
1.5
50K
10
External
±15
200
2" x 3" x 1"
Figure 55-1
PA-101 Preamp Equivalent Circuit
Figure 55-3
PA-300 Preamp Equivalent Circuit
+V
GAIN SELECT
HIGH
MED
LOW
+15V
x 10
RB
(BIAS)
-
X10
+
SECOND
STAGE
OUT
T
x 100
FIRST
STAGE
OUT
R
SE
RB
+V
INPUT
-V
BIAS
ADJUST +15V
R
LIN
LIN
ADJUST
-15V
Figure 55-4
PA-8200 Preamp Equivalent Circuit
+V
RLOAD
+V
-V
7/14
TC6 Temperature Controllers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
General
TC6 Monitor
The TC6 is a self contained Thermoelectric Cooler Temperature Controller for
single and multistage TEC cooled
photodetectors housed in TO-8, TO37,
and other TO style packages. Using a
single 5 Volt power supply, the TC6
operates in conjunction with a thermistor,
located in the detector assembly, to
precisely measure and regulate the
temperature of the cooled detector. The
detector assembly temperature is set with
a single resistor that is equal to the
thermistor resistance at the desired set
temperature. The detector manufacturer
generally specifies the optimum detector
operating temperature and corresponding thermistor value
The TC6 contains a connector (P3)
for optional monitoring of the TEC current,
the current through the temperature set
resistor output of the thermistor bridge.
Pins on this connector can also be used
to set detector temperature with an
external resistor or current source if
desired. In addition, a solid state switch
closure and the illumination of an on
board LED is provided when the detector
temperature is within ± 2°C of the
programmed temperature.
Interconnect cables are provided with
each TC6 controller to interface with the
power supply and the detector assembly
(TEC-thermistor). A cable is also provided to interface with connector P3.
The TC6 monitor fixture is available
and provides an easy way to measure the
various outputs provided on connector
P3. A DVM is connected to the output of
this fixture and a five position switch
allows monitoring of the output of the
thermistor bridge, the TEC current, the
current through the temperature set
resistor, the +5 Volt internal reference and
the +5 Volt external power supply. The
TC6 does not require the TC6 monitor for
proper operation, however, it provides a
convenient way to set up the TC6 if
moderate quantities of this TEC controller
are used.
FEATURES
· PRECISE TEMPERATURE CONTROL
· TEMPERATURE STABILITY TO ± 0.02°C
· TEMPERATURE SET WITH A SINGLE RESISTOR
· SINGLE +5 VOLT POWER SUPPLY OPERATION
· OPERATES WITH MOST TEC COOLED DETECTORS
· MAXIMUM TEC CURRENT ADJUSTABLE TO 2 AMPS
· LED TEMPERATURE STABILIZATION INDICATOR
· TEC CURRENT MONITOR
· THERMISTOR BRIDGE MONITOR
· SMALL SIZE
· DETAILED INSTRUCTION MANUAL PROVIDED
The various electrical inputs
and outputs of the
TC6 can be monitored
and/or controlled through
this connector if desired.
Making connection to the
TC6 through this
connector is not necessary
to the operation of the
controller.
8/14
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
The figures on this page illustrate the location and
function of the connectors and components on the TC6. The
temperature set resistor (RS1 or RS2) are customer installed.
Selection of the fixed resistor RS1 or variable resistor RS2 is
made by placing a jumper in the specified location on
connector JP2. A 1 ohm ballast resistor is provided on the
TC6. this resistor is in series with the TEC and is used to
properly match the TC6 to very low resistance TECs. This
resistor can be shorted out if not needed by placing a jumper
across JP1. The various control voltages of the TC6 can be
monitored through connector P3. The pin location of these
signals is shown below.
9/14
Thermoelectric Cooler Accessories
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Description
A thermoelectrically cooled detector requires
a heat sink to dissipate the heat generated by
the cooler, an amplifier to amplify the detector
signal to a usable level and a temperature
controller to hold the detector at a constant
temperature. Teledyne Judson TE cooler
accessories are designed to give solutions for
these problems to our customers.
HS1 Assembly
(Heat Sink Assembly for TO-37, TO-66
and TO-3 Packages)
The HS1 series is designed to provide heat
sinking and cabling to simplify integrating a
TE cooled detector into an existing system,
and is designed to mate with either the TC-5
or TC-6 temperature controllers.
HSAMP Assembly
(Heat Sink and Amplifier Assembly for
TO-37, TO-66 and TO-3 Packages)
The HSAMP series is designed to provide
both heat sinking and signal amplification for
our TE cooled photovoltaic product line. This
allows Teledyne Judson to help a customer to
choose the best amplifier for a particular detector
and system. The HSAMP includes a hybrid PA-5,
PA-6 or PA-7 preamplifier and is designed for
easy connection to the customer's optical
system and the TC-6 Temperature Controller.
HS1 Assembly/HSAMP Assembly
10/14
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
Model
Part Number
HSAMP1-TO66-TC6-PA5
HSAMP1-TO66-TC6-PA7
HSAMP1-3CN-TC6-PA7
490114
490140
490143
Heat sink/Socket/PA-5
amplifier/Cables for TO-66 PV
detectors/TC6 controller
Description
Transimpedance
High
Gain:
Med
(Switch Selected)
Low
10
5
Heat sink/Socket/PA-7
amplifier/Cables for TO-66 PV
detectors/TC6 controller
Heat sink/Socket/PA-7
amplifier/Cables for 4-stage PV
detectors/TC6 controller
10
7
10
10
6
10
6
5
10
5
10
4
10
3
10
Units
7
Bandwidth
@ High Gain
200
8
8
RD>10K,CD<0.2nF
@ Med Gain
200
60
60
@ Low Gain
200
150
150
Input Offset Voltage (Vos)
±40
±100
±100
µ/A
KHz
µV
Input Bias Current (ib)
±90
± .005
±.005
nA
Voltage Noise Density (en)@1KHz
1.5
8
8
nV/� Hz
Voltage Noise from 0.1 to 10Hz
.0 3 5
1.6
1.6
µV
Current Noise Density (in)@1KHz†
1.6
.04
.04
pA/� Hz
Output Impedance
< 100
�
Maximum Output Voltage
±15V
p-p
Power Requirements
Recommended for Detector Series:
+15V and -15V @ 10mA
J12, J12TE1
J12TE2, J16 Series
J12TE2, J16 Series
† At high gain setting
HSAMP and CMAMP Operating Circuit
CM21 Assembly
(Heat Sink and Temperature Controller
for TO-37, TO-66 and TO-3 Packages
The CM21 assembly is designed to provide
heatsinking and temperature control for Teledyne
Judson's TE cooled photoconductive and photovoltaic
detector product line. It is designed to simplify integrating a TE cooled detector into an exisiting system with
a customer supplied amplifier. The CM21 assembly is
ideal for customers who have dsigned their own
amplifier for their system.
CMAMP Assembly
(Heat Sink Amplifier and Temperature
Controller for TO-37, TO-66 and
TO-3 Packages
Teledyne Judson Hybrid Preamp Configuration
The CMAMP series is designed for customers
that would like a fully integrated detector module. It
includes heatsinking, detector signal amplification
and temperature control. The CMAMP assembly
requires an external power supply that provides both
+5V @ 2.0 amperes and ±15 volts at 100mA. The
CMAMP assembly is an ideal platform for evaluating
TE cooled detectors for the first time. Custom
mechanical assemblies including temperature
control, detector amplification and heat sinking are
available on an OEM basis.
11/14
Thermoelectric Cooler Accessories
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
CM21 Assembly / CMAMP Assembly
Model Number
HS1
HS1-T066-TC6
HS1-T066-TC5
Part
Package
Heat sink
Number
Socket
600613-1
9 pin TO-66
66G, 66S,
490117
66C, 66GE,
490094
66D
HS1-37S-TC6
490148
HS1-3CN-TC6
490120
HS1-3C12-TC6
490151
HS1-T066-TC6-PS
490138
HSAMP-T066-TC6-PA5
490114
6 pin TO-37
HS1
8 pin TO-3
3CN
3C12
9 pin TO-66
66G, 66S,
66C, 66GE,
66D
HSAMP-TO66-TC6-PA6
490147
HSAMP-T066-TC6-PA7
490140
HSAMP-3CN-TC6-PA7
490143
8 pin 3CN
Cables
Detector-BNC
Cooler to TC6
490102
9 pin TO-66 Detector-BNC
66X
Detector-Lemo
CM21 ASSEMBLY-TO37
490149
6pin TO-37
CM21 ASSEMBLY-3CN
490122
8pin 3CN
490150
CMAMP-T066-PA6
490146
CMAMP-T066-PA7
490139
CMAMP-3CN-PA5
490132
CMAMP-3CN-PA7
490141
CM1
N/A
8 pin TO-3
3CN
+/-15V @10mA
+5V +/- .25
@ 2A
N/A
Detector-BNC
12 pin TO-3
9 pin TO-66
66X
N/A
N/A
PA-5-HYBRID
From Amp
PA-6-HYBRID
SMA to BNC
Cooler to TC6 PA-7-HYBRID
490118
490130
Power
Requirements
Detector-Lemo
Cooler to TC6
CM21 ASSEMBLY-TO66
CMAMP-T066-PA5
Temp.
Controller
N/A
Detector-BNC
Cooler to TC6
Detector-BNC
Cooler to TC5
CM21 ASSEMBLY-TO66-PS
CM21 ASSEMBLY-3C12
Amplifier *
PA-5-HYBRID
12" RG174
SMA-BNC
PA-6-HYBRID
PA-7-HYBRID
PA-5-HYBRID
TC6
+5V +/- .25
@ 2A
+/-15V@10mA
PA-7-HYBRID
* Hybrid amplifier specifications detailed on page 56
12/14
TC5 Temperature Controllers
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
General
The TC5 controller is one of several
models of controllers manufactured by
Teledyne Judson Technologies designed
to provide high stability temperature
control with a design approach that is
user friendly. Figure 1 is a block diagram
that illustrates the major components of
this controller.
Principle of Operation
Please refer to Figure 1 as the
following section is reviewed. The
controller is powered by standard AC
input voltages (115 or 230). Incoming AC
voltage is converted to low voltage DC for
use by the control circuitry. These low
power voltages are available on the rear
panel connector J1 and can be used to
power low voltage external circuitry. Also
included in the controller is a separate DC
voltage power source for driving the
thermoelectric cooler (TC).
The resistance of the thermistor used
to measure the temperature of the TC is
converted to a DC voltage and compared
to the voltage used to establish the set
point. The difference between the set
point voltage and the voltage resulting
from the conversion of ther thermistor
resistance is amplified and applied to a
power driver. The power driver controls
the current flowing in the TC to bring the
thermistor resistance equal to the set
point. While this is occurring, an integral
term is developed to maintain the
required current flow to the TC when there
is no different between the set point and
the thermistor resistance.
The current limit control prevents TC
currents from exceeding the preset value
(Imaximum for thermoelectric cooler).
This feature helps to prevent damage or
reduced performance of the TC.
13/14
Teledyne Judson Technologies' current mode and voltage mode preamplifiers are designed to
operate with our wide range of high performance standard, custom and space qualified detector
products and accessories.
· Germanium detectors and arrays
· Indium Arsenide detectors and arrays
· Indium Antimonide detectors and arrays
· Mercury Cadmium Telluride detectors and arrays
· Lead Selenide detectors and arrays
· Lead Sulfide detectors and arrays
· Dewars, backfill and vacuum packages
· Thermoelectric, Joule Thomson and closed cycle linear and rotary coolers
· Preamplifiers
· Temperature controllers and readout electronics
Please contact us for more information on these products at 215-368-6900 or on the web at
www.teledynejudson.com.
TELEDYNE
JUDSON TECHNOLOGIES
A Teledyne Technologies Company
221 Commerce Drive
Montgomeryville, PA 18936 USA
Tel: 215-368-6900, Fax: 215-362-6107
www.teledynejudson.com
December, 2002
14/14
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