Applicos: PD24222 PXI Dual channel 24-bit / 192ksps Digitizer

PD24222 PXI Dual channel 24-bit / 192ksps Digitizer.


Product Introduction

The PD24222 is a PXI, Dual Channel Digitizer. It
features fully differential inputs and a very low
distortion. For differential measurements the input
signals may have any common mode level as long
as the common mode level plus signal stay within the
-10V to +10V range. Alternatively AC coupling can be
used. For single ended applications the PD24222
has a programmable DC offset source that can be
connected to the negative input. This ensures the full
resolution of the converter can be maintained when
capturing signals with a DC offset.

The unit is very suitable for audio type of
measurements. The flexible input ranging and
coupling allow easy adaptation to a wide range of
Unit Under Test output voltages.
The two channels are ideal for stereo and phase shift
measurements. The selectable 22kHz or 100kHz low
pass filters reduce the out of band noise.
The internal clock sources can generate all standard
audio sample rates and more. The External clock
and trigger capability give the user full control of the
measurement timing. If the PG24192 is used as
generator, the clocks of the two units can be
synchronized via the local bus capability of the PXI
backplane. This allows coherent clocking for best
measurement results.


• Two channels, fully differential inputs
• Excellent dynamic performance
• 114dB THD typical at 1kHz / 96ksps
• Programmable DC-offset level
• 31.6mVpp to 10Vpp output range
• 1MΩ or 600-Ω input impedance
• Internal clock supports all standard audio rates
• Local bus clock for sync. to PG24192

Technical Specifications


Channels 2
Resolution 24-bit
Sample rate, internal clock 5ksps – 192ksps
Sample rate, external clock 1ksps – 220ksps
Memory depth 1M-word per channel
Input range 31.6mV to 10Vpp in 10dB steps
Input configuration Single ended or differential
Input coupling AC or DC
Input impedance 1MΩ or 600-Ω
Input operating area -10V to +10V
Analog filters (low pass) 100kHz, 22kHz


  Amplitude accuracy ±0.05dB@ 1kHz/10Vpp
  Frequency flatness 0.2dB from 20Hz to 20kHz

Dynamic characteristics (Vin = 9Vpp, f-sample.=192ksps)

SINAD (1kHz) 103dB (BW=20kHz)
SFDR (1kHz) 110dB
THD (1kHz) 105dB
THD (1kHz@96ksps, typical) 114dB
THD (10kHz) 103dB

DC-offset voltage source

Voltage range -5V to +5V
Resolution 16-bit (152µV)

Clock & Trigger inputs

Clock Input 50-Ω, VIL<0.6V, VIL>1.4V
Trigger input 10kΩ, VIL<0.8V, VIL>2.0V


Trigger sources Software, External, PXI STAR, PXI
TRIG 0..7
Trigger capabilities edge or level, positive or negative
going. Independent trigger source
selection per channel

Additional information


Product Code


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