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Электронный компонент: S1A240X00

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Low Noise Preamplifier Rev. 1.1
1
Quintenz Hybridtechnik
www.quintenz.de
Fax 0049-89-759 25 45
copyright Quintenz Hybridtechnik 2004
QA 605
QA 605
QA 605
QA 605
Shortform Datasheet



















Circuit Description:
Low noise monolithic circuits generally have quite high current noise densities, rendering
them unsuitable for source impedances (real value) of over 250
, not to mention
impedances of 1k
or higher. Bias current of the input differential pair in a low noise amplifier
has to be relatively high to reduce input noise voltage density. In the case of a bipolar input
stage, this would cause the input bias current to rise beyond acceptable levels. Therefore
designers often provided the input stage with current sources - which make the input current
noise density even worse and may cause instabilities for higher source impedances.

This hybrid design shows none of the above mentioned drawbacks: Current noise density is
low even with excellent voltage noise density, the amplifier has low input bias current and will
not become unstable for high source impedances.

The circuit topology is internally differential, but with single ended input and output. There are
generally no external components required to run the amplifier, supply bypass capacitors are
integrated. However, if you intend to run the amplifier with high output load, additional bypass
capacitors (tantalum) are recommended. The amplifier fits into DIL-14 sockets and features a
hermetically closed (welded) metal package which provides RFI-protection and high reliability
even under difficult environmental conditons.

The amplifier is recommended for ultrasonic signal conditioning, especially for transducer
impedances in the 1k
range and frequencies up to 1.5MHz. By its outstanding DC input
characteristics the amplifier also qualifies for low noise instrumentation or sensor
applications.

Features:
Low Noise Preamplifier
For 200
...5k
Source
Impedance Range
Low 1/f Corner Frequency
Low Quiescent Current
High Speed
No External Components
Required
Hermetically Sealed Metal
Package (DIL-14)

Applications:
Sonar, Instrumentation, Sensor
Frontend
Production to MIL-Standards
(MIL-PRF-38534 / MIL-STD 883C/D/E )
available on request.


Low Noise Preamplifier Rev. 1.1
2
Quintenz Hybridtechnik
www.quintenz.de
Fax 0049-89-759 25 45
copyright Quintenz Hybridtechnik 2004
QA 605
QA 605
QA 605
QA 605

Absolute Maximum Ratings:
T
A
=20C unless otherwise noted, T
C
=case temperature
Max. Supply Voltage
18V
Max. Continuous Output Current
55mA
Max. Continuous Power Dissipation
800 mW
Max. Input Voltage Range
V
EE
+1V
V
IN
V
CC
-1V
Operating Temperature Range
-55C...+125C
Storage Temperature Range
-65C...+150C

Technical Data:
T
C
=20C, Operating Voltage V
B
=
15V, Gain=100 if not stated otherwise. min/max with
respect to absolute values. Negative signed current means current flowing from the hybrid.
Parameter Test
Conditions
min.
typ.
max.
Power Supply
Supply Voltage
5V
15V
Quiescent Current
(user selectable)
10mA
15mA
Output
Output Current
25mA
30mA
Output Current
(all load conditions)
continuous
operation
20mA
Output Current
Short Circuit
40mA
Output Swing
500
load
13V
Output Resistance
DC
1
Output Resistance
R Version
DC
49.5
50
50.5
Input
Input Current
V
IN
=0V
150nA
250nA
Offset Voltage
V
OUT
=0V
150
V 300
V
Input Noise Voltage
Density
f=100kHz
1.2nV/
Hz 1.5nV/
Hz
Input Noise Current
Density
1)
f=100kHz
0.7pA/
Hz 0.9pA/
Hz
1/f Corner Frequency 1) Volt./Curr. N.
10Hz
AC Operation
Gain Range
26dB
60dB
Gain Accuracy
f=100Hz
0.05dB
GBWP
R
L
=100
850MHz
1.2GHz
Slew Rate
80V/
s
1)
Guaranteed by design, not measured in production test.

The gain has to be selected when placing the order with Quintenz Hybridtechnik. We can
help you to optimize your system by choosing the proper bias current, trading noise power
density versus speed or power consumption.
The amplifier is also available with 50
output resistance or decoupling capacitor at the
input.

Please contact us for the latest preamplifier products or customer specific amplifiers!