Analog Technologies ATNMA1.0 User manual

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 1
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
Noise Measurement Amplifier
Figure 1. Physical Photos ofATNMA1.0
MAIN FEATURES
Built-in rechargeable battery
Magnifications: 3,000×, 10,000×, 30,000×, 100,000×,
300,000×, 1,000,000×, 3,000,000×
Three filter bandwidths: 0.1Hz ~ 10Hz, 0.1Hz ~ 1kHz,
0.1Hz ~ 100kHz
LED low battery indicator function
BNC output terminal
Input probes with adjustable span
100 % Lead (Pb)-free and RoHS Compliant
INTORDUCTION
This noise measurement amplifier, ATNMA1.0, is
designed to test ultra low noises which cannot be
measured by oscilloscope, such as nV and µV level noises,
for electronic modules. This amplifier measures the noise
signals through touching the point that needs testing, then
amplifies the detected noise signals, and select the
measuring range of frequencies. The rechargeable battery
energy is 500mAH, can be used more than 20 hours. The
rechargeable battery full voltage is 4.2V. The low noise
amplifier includes one rechargeable battery, one coaxial
cable, some probes.
This noise measurement amplifier assembly has 5
portions:
1. Amplify Magnifications
For example:
3000×:
Measure the noises between 1µV to 100µV. Toggle
magnification switch S2 to S2-1 and S5 to S5-1.
10,000×:
Measure the noises between 0.1µV to 1µV. Toggle
magnification switch S2 to S2-2 and S5 to S5-2.
300,000×:
Measure the noises less than 0.1µV. Toggle magnification
switch S2 to S2-3 and S5 to S5-3.
10,000,000×:
Measure the noises less than 1nV. Toggle magnification
switch S2 to S2-3 and S5 to S5-3.
Please see the switches location in figure 2 and figure 3.
Figure 2. Physical Label of ATNMA1.0
2. Noise Frequency Range
0.1Hz ~ 10Hz: toggle S2 to S2-1
0.1Hz ~ 100 kHz: toggle S2 to S2-2
0.1Hz ~ 1 kHz: toggle S2 to S2-3
Please see the switches location in figure3

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 2
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
Figure 3. Functions and Locations of ATNMA1.0
3. Battery Capacity Monitor
Observe battery LEDs when press battery indicator switch
on. When four power indication LEDs all lit, it means the
battery is full, voltage of the battery is more than 4.0V;
three power indication LEDs on, voltage of the battery is
more than 3.8V; two power indication LEDs lit, voltage
of the battery is more than 3.6V; if only one LED is on,
the circuit does not work, recharging the battery is
necessary, otherwise the battery will be damaged. Please
see the capacity monitor demonstration in figure 5.
Figure5. Capacity Monitor of ATNMA1.0
4. Battery Charging Display
Charging display LEDs LED5, LED6 will be on when
charging well, only when the charging voltage over 7.2V
or less than battery voltage, LED5 turns off; LED6 is lit
when in charging mode. Battery charging display show in
figure 6.
Figure6. Charging Display of ATNMA1.0
5. Battery Indication
Figure7.Power Show Time of ATNMA1.0
INPUT AND OUTPUT MODLE
Rotatable probe input:
Adjust the angles of the spring probe to make it contact
the point to be tested. Hold the amplifier by hand just like
a pen. Two probes contact with together, open an angle of
more than 100°.
Figure8. Probe Angle Figure of ATNMA1.0
Coaxial cables output: Use coaxial cable to connect
between the BNC and oscilloscope. The type of the
coaxial cable line is SYV-50-2-41.
APPLICATION METHOD
Adjust the angles of the spring probe angles to contact the
point to be tested by two screws, connect coaxial cable
well, and push on the power switch. At this time press the

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 3
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
monitoring battery switch, power indication LEDs lit.
Then select the filter frequency range, toggle two
switches at the same time and observe the oscilloscope
and adjust suitable magnifications (oscilloscope
waveform is observable but not saturated).
CALCULATION METHOD
To calculate the ultimate noise value, two data need to be
measured. One data is VO(P-P), the noise value of no power
supply module, and the other is VC(P-P), the noise value of
working well. The formula is as follows.
 
(1)
 
. (2)
 
(3)
 
(4)
 
 6.6 (5)
 is the peak to peak voltage of the tested circuit
with power supply from oscilloscope;
G is magnification of the noise measurement amplifier;
 is the total peak to peak voltage of the input
terminal;
 is the total root mean square voltage of the
input terminal;
 is the root mean square voltage of noise
measurement amplifier;
 is the root mean square voltage of device
under test;
 is the final peak to peak noise value of the
device under test ;
 is the final root mean square noise value of
the device under test ;
For example:
When in 0.1Hz~10Hz, VOUT-PP is 2.0VP-P, amplify
magnification G is 2000×, the peak to peak noise voltage
is 0.778µV; the root mean square noise value of the
device under test is 5.14µV.
Figure 9. Calculation formula Diagram of ATNMA1.0

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 4
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
Figure 10. Application Drawing of ATNMA1.0
Figure 11. Internal Block Diagram of ATNMA1.0
AMPLIFIER ITSELF NOISE
Table 1 show the amplifier itself noise at different frequency.

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 5
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
APPLICATION PRESENTATION
Figure 12. Application Presentation Photo of ATNMA1.0
Figure 12. Side View of ATNMA1.0
ACCESSORIES
Figure 13. BNC-BNC Connector 1.5m Coaxial Cable Figure 14. Charger and USB cable ofATNMA1.0

2352 Walsh Ave. Santa Clara, CA 95051. U. S. A. Tel.: [phone], Fax: [phone] www.analogtechnologies.com
©Copyrights 2000-2015, Analog Technologies, Inc. All Rights Reserved. Updated on 8/28/2015 www.analogti.com 6
A
nalog Technologies AT
N
MA1
.0
Noise Measurement Amplifier
ORDERINGINFORMATION
Part # Description
ATNMA1.0 Noise Measurement Amplifier
Quantity (pcs) 1 -4 5 -9 ‡10
Unit Price $189 $169 $149
NOTICE
1. ATI warrants performance of its products for one year to the specifications applicable at the time of sale, except for
those being damaged by excessive abuse. Products found not meeting the specifications within one year from the date
of sale can be exchanged free of charge.
2. ATI reserves the right to make changes to its products or to discontinue any product or service without notice, and
advise customers to obtain the latest version of relevant information to verify, before placing orders, that information
being relied on is current and complete.
3. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment,
including those pertaining to warranty, patent infringement, and limitation of liability. Testing and other quality
control techniques are utilized to the extent ATI deems necessary to support this warranty. Specific testing of all
parameters of each device is not necessarily performed, except those mandated by government requirements.
4. Customers are responsible for their applications using ATI components. In order to minimize risks associated with the
customers’ applications, adequate design and operating safeguards must be provided by the customers to minimize
inherent or procedural hazards. ATI assumes no liability for applications assistance or customer product design.
5. ATI does not warrant or represent that any license, either express or implied, is granted under any patent right,
copyright, mask work right, or other intellectual property right of ATI covering or relating to any combination,
machine, or process in which such products or services might be or are used. ATI’s publication of information
regarding any third party’s products or services does not constitute ATI’s approval, warranty or endorsement thereof.
6. IP (Intellectual Property) Ownership: ATI retains the ownership of full rights for special technologies and/or
techniques embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and
inventions made by ATI for its products and/or projects.