NIPCI-4474 NI [National Instruments Corporation], NIPCI-4474 Datasheet - Page 3

• Manufacturer Part Number: NIPCI-4474
• Description: 24-Bit, 102.4 kS/s, 8 and 4-Channel Dynamic Signal Acquisition
• Manufacturer: NI [National Instruments Corporation]

Specifications
Typical for 25 °C unless otherwise noted.
Analog Input
Channel Characteristics
Number of channels
Input configuration ........................................... Unbalanced differential
Resolution......................................................... 24 bits, nominal
Type of ADC...................................................... Delta-sigma
Oversampling, for sample rate (ƒ
Sample rates (ƒ
Frequency accuracy .......................................... ±25 ppm
Input signal range ............................................ ±10 V peak
FIFO buffer size................................................. 1,024 samples
Data transfers .................................................. DMA
Transfer Characteristics
Offset (residual DC).......................................... ±3 mV, max
Gain (amplitude accuracy)................................ ±0.1 dB, max, ƒ
Amplifier Characteristics
Input impedance (ground referenced)
Positive input.................................................... 1 MΩ in parallel with 60 pF
Negative input (shield)..................................... 50 Ω in parallel with 0.02 µF
Flatness (relative to 1 kHz)............................... ±0.1 dB, DC to 0.4535 ƒ
-3 dB bandwidth............................................... 0.4863 ƒ
Input coupling................................................... AC or DC, software-selectable
AC -3 dB cutoff frequency
Overvoltage protection
Common mode rejection ratio (CMRR)
Dynamic Characteristics
Alias-free bandwidth (passband)..................... DC (0 Hz) to 0.4535 ƒ
Stop band ......................................................... 0.5465 ƒ
Alias rejection .................................................. 110 dB
Spurious-free dynamic range........................... 130 dB, 1.0 kS/s ≤ ƒ
118 dB, 51.2 kS/s < ƒ
IMD................................................................... <-100 dB (CCIF 14 kHz + 15 kHz)
Crosstalk
Phase linearity.................................................. <±0.5 deg
Interchannel phase mismatch.......................... <ƒ
Interchannel gain mismatch............................. ±0.1 dB
Filter delay through ADC.................................. 38.8 sample periods
Onboard Calibration Reference
DC level ............................................................ 5.000 V ±2.5 mV
Temperature coefficient ................................... ±5 ppm/°C maximum
Long-term stability ........................................... ±20 ppm/√1,000 h
NI 4472 Series........................................... 8, simultaneously sampled
NI 4474 Series........................................... 4, simultaneously sampled
1.0 kS/s ≤ ƒ
51.2 kS/s < ƒ
NI 4472, NI 4474 ....................................... 3.4 Hz
NI 4472B .................................................... 0.5 Hz
Positive input ............................................. ±42.4 V
Positive inputs protected........................... CH<0..7>
Negative input (shield) .............................. Not protected, rated at ±2.5 V
ƒ
0 dBFS input .............................................. <-90 dB
20 dBFS input ............................................ <-100 dB
60 dBFS input ............................................ <-60 dB
Between channels 0 and 1, 2 and 3, 4 and 5, or 6 and 7
Other channel combinations
in
< 1 kHz.................................................. >60 dB, minimum
Shorted input ...................................... <-90 dB
1 kΩ load............................................ <-80 dB
Shorted input ...................................... <-100 dB
1 kΩ load............................................ <-90 dB
1
(channel separation), ƒ
24-Bit, 8-Channel Dynamic Signal Acquisition
s
s
).............................................. 1.0 to 102.4 kS/s in 190.7 µS/s increments for
s
≤ 51.2 kS/s.......................... 128 ƒ
≤ 102.4 kS/s ...................... 64 ƒ
s
≤ 102.4 kS/s THD, ƒ
s
):
in
= 0 to 51.2 kHz
in
= 1kHz
ƒ
s
in
> 51.2 kS/s or 95.36 µS/s increments for ƒ
s
(in kHz) x 0.018 deg + 0.082 deg
s
s
s
in
= 1 kHz
s
s
≤ 51.2 kS/s,
s
, max, DC-coupled
National Instruments • Tel: [phone] • Fax: [phone] • [e-mail] • ni.com
s
≤ 51.2 kS/s
Signal Conditioning
Constant current source (software-controlled)
Current.............................................................. 4 mA, ±5%
Compliance....................................................... 24 V
Output impedance ............................................ >250 kΩ at 1 kHz
Current noise .................................................... <500 pA/√Hz
Triggers
Analog Trigger
Source............................................................... CH<0..7>
Level ................................................................. -10 to +10 V, full scale, programmable
Slope................................................................. Positive or negative (software selectable)
Resolution......................................................... 24 bits, nominal
Hysteresis......................................................... Programmable
Digital Trigger
Compatibility .................................................... 5 V TTL/CMOS
Response .......................................................... Rising or falling edge
Pulse width....................................................... 10 ns, minimum
Bus Interface
Type .................................................................. Master, slave
Power Requirements
+3.3 VDC
+5 VDC
+12 VDC............................................................ 120 mA, maximum
-12 VDC ............................................................ 120 mA, maximum
Physical
Dimensions (not including connectors)
Analog I/O connectors ..................................... SMB male
Digital trigger connector .................................. SMB male
Maximum Working Voltage
Maximum working voltage refers to the signal voltage plus the common-mode voltage.
Channel-to-earth .............................................. 10 V, installation category I
Channel-to-channel .......................................... 10 V, installation category I
Environmental
Operating temperature..................................... 0 to 50 °C
Storage temperature ........................................ -20 to 70 °C
Relative humidity ............................................. 10 to 90%, noncondensing
Maximum altitude ............................................ 2,000 m
Pollution degree (indoor use only) ................... 2
Calibration
Internal – On software command; computes gain and offset corrections
External – Internal voltage reference read and stored in nonvolatile memory
Warm-up time .................................................. 15 minutes
Certifications and Compliances
CE Mark Compliance
1
Measured with full-scale (±10 V) input.
PXI.............................................................. 400 mA, maximum
PCI.............................................................. 2.6 A, maximum
PXI.............................................................. 2.2 A, maximum
PCI.............................................................. 17.5 by 10.7 cm (6.9 by 4.2 in.)
PXI.............................................................. 16.0 by 9.9 cm (6.3 by 3.9 in.) (1 slot)
Interval....................................................... Whenever temperature is different from temperature at
Interval....................................................... 1 year
last internal calibration by more than ±5 °C
3