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

The ATX-Express is a fully integrated solution for testing ADCs, DACs and other Analog functions. It features the same signal quality and versatility as the ATX7006A, but is limited to 5 slots. The ATX-Express is ideal for test labs that don't have a wide range of converters to test and therefore can settle with less slots. The ATX-Express is a single instrument for testing data converters. This saves the investment in various high end rack and stack instruments and writing proprietary software to control them.

This means you can concentrate on testing your converters rather than fine-tuning the test set-up. The ATX-Express 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-Express can also be used as an add-on upgrade for ATE systems. Please see the ATX7006A documentation for more details.

ATX Series Comparison

Feature ATX7006A ATX Express ATX Hybrid
Controller module ATX controller ATX controller NI PXI controller
GPIB port Yes No -
Production calculations on controller module: FFT, linearity calculations, etc. Yes No -
DIO module slots 1 1 1
Analog module slots 8 4 6
PXI module slots - - 6
Low-jitter backplane design Improved Standard Standard
Supported modules:
DIO Yes Yes Yes
DIO-II Yes Yes Yes
DRS20 Yes Yes Yes
DPS16 Yes Yes Yes
AWG22 Yes Yes Yes
AWG20 Yes Yes Yes
AWG18 Yes No* No*
AWG16 Yes Yes Yes
WFD22 Yes Yes Yes
WFD20 Yes Yes Yes
WFD16 Yes Yes Yes
* Can be made available upon request, but with limitations. Contact Applicos for details.

Key Features

  • Fully integrated data converter test solution
  • Sample rates from DC up to 200MHz
  • Unsurpassed signal quality and accuracy
  • Coherent measuring by default
  • Flexible and versatile digital IO
  • Extended Analysis software included
  • Static, Dynamic and Histogram testing
  • Lua script for easy user test implementation

Technical Specifications

General specifications

  • 4U high Case Frame with integrated air cooling
  • Power supplies, 115 / 230VAC
  • Controller module running Windows™ XP embedded
  • Ethernet and USB communication ports
  • Built-in signal generation and error calculations for production measurements
  • ATView Analysis software for Engineering and Qualification purposes (for Windows PC)
  • Standard configuration: Digital-IO module, 20-bit AWG, Dual Reference Source

Test fixture with 5 analog signal connections

Arbitrary Waveform Generator Modules


AWG22 AWG20 AWG18 AWG16
Resolution / Update rate 22 bit / 2 MS/s 20-bit / 2 MS/s 18 bit / 300 MS/s
(600 MS/s, 1.2 GS/s)*
16 bit / 400 MS/s
(DIO II or ext.clock)*
Pattern memory depth 4M-words 4M-words 8M-words 8M-words
Output ranges (Vpp, SE) 80 mV to 10.20 V in x2 steps 80 mV to 10.24 V in x2 steps 580 mVpp to 6.56 Vpp in 8 range 480 mVpp to 5.12 Vpp in 8 ranges
Filters / DC offset voltage 8 filters (max.) /
-5.1 V to +5.1 V
8 filters (max.) /
-5.12 V to +5.12 V
6 filters /
-2.56 V to +2.56 V
15- 30- 60MHz /
-2.56 V to +2.56 V
Absolute accuracy ±(25 µV + 8 ppm of range) ±(40 µV + 10 ppm of range) ±(300 µV +0.02 % of range) ±(500 µV +0.08 % of range)
Non Linearity (INL) ±3 ppm of range (1.5 ppm typical) ±8 ppm of range (4 ppm typical) ±0.004 % of range ±0.003 % of range
THD / SNR -111 dB / 97 dB (@ 1 kHz) -108 dB / 92 dB (@ 1 kHz) -99 dB / 73 dB (@ 10 MHz) -87 dB / 70 dB (@ 1MHz)

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

Waveform Digitizer Modules


WFD20 WFD16
Resolution / Sample rate 20 Bit / 2 MS/s 16 Bit / 180 MS/s
Capture memory depth 4M-words 8M-words
Input ranges (Vpp) 0.544 V to 8.16 V in 8 ranges 0.512 Vpp to 7.688 Vpp in 16 ranges
Filters / DC offset voltage 800 kHz, 250 kHz, 40 kHz /
-5 V to +5 V
15- 30 MHz 60 MHz / equal to input range
Absolute accuracy ±(40 µV + 10 ppm of range) ±(800 µV + 0.1 % of range)
Non Linearity (INL) ±8 ppm of range (3 ppm typical) ±0.006 % of range
THD / SNR -110 dB / 93 dB (@ 1 kHz) -89 dB / 70 dB (@ 1 MHz)

DC Modules


DRS20 DPS16
Outputs / res. / settl. 2 ch. / 20 Bit / 20 ms 2 ch. / 16 Bit / 10 ms
Output range / config. ±10 V / 2 or 4-wire ±12 V / 2 or 4-wire
Accuracy ±(25 µV + 10 ppm. Vout) ±(4 mV + 0.2 %. Vout)
Noise (DC- 100 kHz) 5µ Vrms (typical) 18µ Vrms (typical)
Output current 10 mA 200 mA
Voltage readback 24 Bit (DVM function) 16 Bit (volt & current)
V-out modulation n.a. 1 mHz - 1 kHz

DIO & DIO II Modules


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