ATX-Hybrid

Features

  • Fully integrated data converter test solution
  • Sample rates from DC up to 200MHz
  • Seven ATX-style slots and six PXI slots
  • Full synchronization between ATX- and PXI
  • Flexible and versatile digital IO
  • Extended Analysis software included
  • Static, Dynamic and Histogram testing
  • Lua script for easy user test implementation

The ATX-Hybrid is a fully integrated solution for testing ADCs, DACs and other analog functions. To extend the flexibility of the well-known ATX7006 even more, the ATX-Hybrid has 6 user-assignable PXI slots. These slots can be used to install modules to expand the ATX capabilities with functions like complex digital patterns, PMU measurements, high voltage or high current applications, Switch matrices, etc. This allows turning the ATX-Hybrid into a full function test system. Traditionally data converters are tested using a whole stack of bench instruments, filters and switch matrices. The ATX-Hybrid replaces all of that and more due to the easy hardware extendibility.

The ATX- slots of the ATX-Hybrid have the same capabilities and unparalleled signal performance as the ATX7006. This section has linear regulated supplies and an adapted bus to keep noise as low as possible. It is capable of testing converters from 4 to 24-bit. Its versatile digital I/O makes interfacing to the DUT easy, even for embedded converters. The Single Reference Architecture improves the stability and reduces calibration effort. The backplane distributed clock ensures coherent measuring.

The ATX-Hybrid is also ideally suited as an add-on upgrade for ATE systems.

atview7006_atxexpress_14bit_result

INL / DNL measurement of a 14-bit / 65Msps ADC

 

 

 

Block diagram

atx-hybrid_block_diagram

General

The ATX-Hybrid is a modular system that has a 7 slot ATX- section for high performance analog measurements like Data Converter Testing, and a 6 slot PXI section that allows the user to benefit from the many general-purpose PXI-modules available in the market . By bridging clocks and triggers between the two sections, a full integration between ATX- and PXI resources is achieved. The ATX-Hybrid measures Data Converters just as easy as Opamps, Filters, and other analog functions and with the PXI section it can also fully test the digital functionality of a device or board. Further PXI extensions open up almost unlimited measurement capabilities, all within the same test set-up.

The system controller is a standard PXI System Controller. This allows the user to balance cost and performance. The default supplied controller is the NI PXI-8101.

Performance

When designing the ATX-Hybrid we had two important goals in mind: minimum system noise and maximum flexibility. It therefore has linear power supplies for the analog section and thorough Shielding and Grounding to maintain analog signal integrity, even in a harsh production environment. The DIO module can provide a very low jitter sample clock that can be distributed to all other modules and to the DUT.

In the ATX section the standard 20-bit Generator and Digitizer modules offer an outstanding combination of µVolts-level of DC accuracy and a dynamic performance better than 106dB at sample rates up to 2Msps. For higher frequencies there are various modules with up to 400Msps sample rate. The ATX- section features auto-calibration and built-in self-test.

linearity_result_18-bit_ADC

 

 

 

Software

The ATX section of the ATX-Hybrid is a command driven system that can easily be controlled from almost any programming environment.

atcom7006

Command level communication with the ATX-Hybrid using ATCom (ID request and measure voltage at DRS channel1)

With ATCom commands can be sent and results read. This allows testing command sequences before implementing them in software. LabVIEW drivers are also available. The PXI modules can be controlled using card drivers or any other solution you have, just like any other PXI environment.

ATView

The ATX-Hybrid comes with ATView, a sophisticated software package for configuring, programming and controlling the ATX-Hybrid and analyzing the results.

atview7006_instruments_panel

Example of ATView instrument panels

Setting up a test is just a matter of filling in the fields of the instrument panels, program a digital pattern if applicable, and press the START button. After a test the results are viewed in the WaveAnalyzer. The WaveAnalyzer can show the results of time domain, frequency domain and histogram tests. Zoom, stack, and cursor functions are available at any level.

atview7006_stacked_results_16bit_DACs

Stacked linearity result of two different 16-bit DAC devices

When saving test results all settings are included. So when reviewing the results later, there never has to be any doubt about the exact conditions. Results and settings are stored in human-readable XML format which allows easy user processing. Export in CVS format is possible and graphs can be saved as images for easy importation into reports.

dynamic_results_14bit_70Msps_ADC

Dynamic result of a 14-bit/70Msps ADC

Test Methods

All standard data converter test methods are supported. Dynamic parameters are measured with sine waves and the results can be analyzed in time domain as well as in frequency domain. Static parameters can be measured with direct ramp testing or with histogram testing. Histogram testing is supported for ramp, triangle and sine wave signals.

digital_pattern

Example of a digital pattern, editable with the mouse or a script

 

 

 

General specifications:
- 19" Case Frame, 4U high, with integrated air cooling
- 7 ATX- style slots and 6 PXI slots
- Standard PXI System Controller module
- Built-in signal generation and error calculations for various analog measurements
- ATView7006 Analysis software for Engineering and Qualification purposes (for Windows PC)
- LABVIEW and LabWindows/CVI support for the ATX slots as well as the PXI slots.
Standard ATX-slot configuration: 20-bit AWG, 20-bit WFD, Dual Reference Source, Dual Power Supply and the Digital-IO module.

atx7006_test_fixture

Test fixture with 5 analog signal connections.

Summary of modules specifications:

AWG20 module

Resolution/Update rate 20-bit / 2Msps
Pattern memory depth 4M-words
Output ranges (Vpp, SE) 80mV to 10.24V in x2 steps
Filters / DC offset voltage 8 filters(max.)/-5.12V to + 5.12V
Absolute accuracy ±(40µV + 10ppm of range)
Non Linearity (INL) ±8ppm of range (4ppm typical)
THD / SNR -108dB / 92dB (@ 1kHz)

WFD20 module

Resolution/Sample rate 20 bit / 2Msps
Capture memory depth 4M-words
Input ranges (Vpp) 0.544V to 8.16V in 8 ranges
Filters / DC offset voltage 800kHz,250kHz,40kHz /-5V to + 5V
Absolute accuracy ±(40µV + 10ppm of range)
Non Linearity (INL) ±8ppm of range (3ppm typical)
THD / SNR -110dB / 93dB (@1kHz)

AWG22 module

Resolution/Update rate 22 bit / 2Msps
Pattern memory depth 4M-words
Output ranges (Vpp, SE) 80mV to 10.20V in x2 steps
Filters / DC offset voltage 8 filters(max.)/-5.1V to + 5.1V
Absolute accuracy ±(25µV + 8ppm of range)
Non Linearity (INL) ±3ppm of range (1.5ppm typical)
THD / SNR -111dB / 97dB (@ 1kHz)

WFD16 module

Resolution/Sample rate 16 bit / 180Msps
Capture memory depth 8M-words
Input ranges (Vpp) 0.512Vpp to 7.688Vpp in 16 ranges
Filters / DC offset voltage 15- 30MHz 60MHz / equal to input range
Absolute accuracy ±(800µV+0.1% of range)
Non Linearity (INL) ±0.006% of range
THD / SNR -89dB / 70dB (@1MHz)

 

AWG16 module  
Resolution / Update rate* 16 bit / 400Msps(DIO II or ext.clock)
Pattern memory depth 8M-words
Output ranges (Vpp SE) 480mVpp to 5.12Vpp in 8 ranges
Filters / DC offset voltage 15- 30- 60MHz / -2.56 to +2.56V
Absolute accuracy ±(500µV+0.08% of range)
Non Linearity (INL) ±0.003% of range
THD / SNR -87dB / 70dB (@ 1MHz)
DC modules -> DRS20 DPS16
Outputs/res./settl. 2ch./20-bit/20ms 2ch./16-bit/10ms
Output range/config. ±10V / 2 or 4-wire ±12V / 2 or 4-wire
Accuracy ±(25µV+10ppm.Vo) ±(4mV+0.2%.Vout)
Noise (DC- 100kHz) 5µVrms (typical) 18µVrms (typical)
Output current 10mA 200mA
Voltage readback 24-bit (DVM function) 16-bit (volt&current)
V-out modulation n.a. 1mHz - 1kHz

AWG18 module

Resolution/Update rate* 18 bit / 300Msps(600Msps,1.2Gsps)
Pattern memory depth 8M-words
Output ranges (Vpp SE) 580mVpp to 6.56Vpp in 8 range
Filters / DC offfset voltage 6 filters / -2.56 to +2.56V
Absolute accuracy ±(300µV+0.02% of range)
Non Linearity (INL) ±0.004% of range
THD / SNR -99dB / 73dB (@10MHz)

DIO & DIO II

Data In- Outputs 20/24-bit, parallel,byte-byte, serial
Capture & Stimuli memory 8Mword x 16 or 4Mword x 24 bits
Max. data&clock rate 50MHz LS mode / 200MHz HS mode
DIO II max. clock rate 600MHz on backplane / 1GHz front
Digital I/O levels 1.2V - 3.3V/5V CMOS & LVDS
Clock jitter (DIO II) 190fs (typical@100MHz)

*Update rates > 200MHz require DIO II or an external clock source

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTIFICATION

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