Number of channels	2
ADC resolution	14 bits
Sample rate	30 MS/s to 100 MS/s
Full-scale input range	+8.5 dBm peak at 10 MHz ± 1 dB typical (1.7 Vpeak–peak sine, 0.60 VRMS)
Maximum input level without damage	+24 dBm peak (10Vpeak–peak sine, 3.5 VRMS)
Input coupling	AC
Input impedance	50 Ω nominal
Input return loss	<-15 dB typical, 250 kHz to 80 MHz
Maximum DC input voltage without damage	10 V
Average noise density	-143 dBm/Hz typical
Signal-to-noise ratio	>76 dB typical (-1 dBfs at 68 MHz tone, bandwidth = 10 MHz)
Maximum instantaneous bandwidth	20 MHz (limited by digital downconverter)
Passband flatness (referenced to 10 MHz) 250 kHz to 80 MHz	<+0.33 dB, -0.55 dB typical
AC coupling cutoff frequency (-3 dB)	50 kHz typical
Input group delay variation	10 ns peak-to-peak typical, 250 kHz to 80 MHz
Stopband rejection	>50 dB typical at 120 MHz, referenced to 10 MHz
Channel-to-channel crosstalk<40 MHz<-70 dB typical40 MHz to 80 MHz<-60 dB typical

IF Input Performance

1378 — Figure 1. Measured Input Frequency Response (Passband)

IF Input Spectral Characteristics

Third-order intercept (TOI)

+38 dBm typical

IF Input Spectral Characteristics Performance

Digital Downconverter Characteristics

Number of channels	Up to 6 per ADC channel
DDC resolution	16 bits for both I and Q data
Decimation[1]	÷4 to ÷4,096
Tuning resolution	ADC clock/232

Digital Downconverter (DDC) Performance

Sample DDC filter performance plots use NI-5640R 1.3 instrument driver library example filter designs. The dark lines in the above figures show the true response of the digital filter in the DDC. The dashed lines show the effect of aliasing after decimation. Notice that for a 10 MHz span, the DDC filter aliasing artifacts have virtually no impact; whereas for a full 20 MHz span, signals at frequency offsets near ±40 MHz can alias back up to -66 dBc within the ±10 MHz passband near the band edges.

IF Output

Number of channels	2
DAC resolution	14 bits
Sample rate	30 MS/s to 200 MS/s
Output coupling	AC-coupled
Output impedance	50 Ω nominal
Output return loss	<-15 dB typical, 250 kHz to 80 MHz
Maximum DC bias voltage without damage	10 V
Average noise density	-153 dBm/Hz typical
Signal-to-noise ratio+2 dBm output level>69 dB typical-4 dBm output level>64 dB typical
Full-scale output range[2]CIC and inverse sync ON-4 dBm peak at 10 MHz ± 1 dB typical (0.4 Vpeak-peaksine, 0.14 VRMS)Filters off, uncompensated+2 dBm peak at 10 MHz ± 1 dB typical (0.8 Vpeak-peaksine, 0.28 VRMS)
Output protection	Indefinite duration short to ground
Maximum reverse power without damage	+24 dBm peak (10 Vpeak-peak, 3.5 VRMS)
Passband flatness (referenced at 10 MHz)	<±1 dB typical, 250 kHz to 80 MHz (with CIC and sync compensation filter engaged)
AC coupling cutoff frequency (-3 dB)	50 kHz typical
Channel-to-channel crosstalk<40 MHz<-70 dB typical≥40 MHz to 80 MHz<-60 dB typical

IF Output Performance

IF Output Spectral Characteristics Performance

Digital Upconverter Characteristics

Number of channels	1 per DAC channel
DUC resolution	14 bits for both I and Q data
Interpolation	4x to 252x
Modulation bandwidth	Up to 40 MHz
Tuning resolution	DAC clock/232. (For example, a 200 MHz clock results in a 46.6 mHz tuning resolution.)

System Level Performance

System Level Modulation Quality

Conditions	8-QAM, symbol rate: 3.125 MHz, PRN 9 sequence, power: -5 dBm, filter alpha 0.22, filter length 128, root-raised cosine
Modulation error ratio (MER)[3]10 MHz carrier>57 dB typical40 MHz carrier>54 dB typical70 MHz carrier>46 dB typical

Data Transfer Rate

(Using NI PXIe-1062Q chassis, NI PXIe-8130 controller, single-threaded, half-duplex transfer; transfer rate is dependent upon controller and chassis hardware, software, and backplane usage.)

NI PXIe-5641R to host	120 MB/s typical
Host to NI PXIe-5641R	52 MB/s typical

Timebase System

Internal Timebase

Timebase frequency[4]	200 MHz ± 35 ppm, maximum
Minimum Sample Clock divisor	2 for ADC, 1 for DAC
Supported divisors	1, 2, 4, 8, and 16

External Clock/External Frequency Reference

Impedance	50 Ω nominal, AC-coupled
Input amplitude rangeSine wave0.63 Vpeak-peak to 2.8 Vpeak-peak (0 dBm to 13 dBm)Square wave0.25 Vpeak-peak to 2.8 Vpeak-peak
Maximum input level without damage	+24 dBm (10 Vpeak-peak, 3.5 VRMS)
Maximum PLL lock time	250 ms
External Reference Clock range[5]	1 MHz to 100 MHz in 1 MHz increments, ±100 ppm
External Sample Clock range[6]	30 MHz to 200 MHz

Trigger System

Modes	Digital input, software
SourcesUsing instrument driverTRIG or softwareUsing LabVIEW FPGATRIG, RTSI <0..7> (mapped to PXIe_TRIG<0..7>), or software
SlopeUsing instrument driverRisingUsing LabVIEW FPGARising or falling

External Trigger Channel (TRIG)

Impedance	10 kΩ nominal, DC-coupled
Range	0 V to 3.3 V typical, 5 V tolerant
VIH	2.2 V typical
VIL	0.95 V typical
Overvoltage protection	-3.5 V to +8 V continuous
Maximum trigger frequency	<10 MHz typical, system dependent
Input rise/fall time	<10 ns/V typical

AUX I/O Connector

Number of digital lines	7
I/O direction	Pin-configurable
Input voltage range	0 V to 3.3 V typical, 5 V tolerant
VIH	2.5 V typical
VIL	1 V typical
VOH	3.5 V typical, no load
VOL	0.1 V typical, no load
Overvoltage protection	-0.5 to +5.5 V
Output type	3.3 V CMOS
Output current	±24 mA
Output impedance	56 Ω
+5 V power output voltage	5 V ± 10%
+5 V power output current	500 mA, ±150 mA typical, electronically fused

FPGA

Model	Xilinx Virtex 5 SX95T
Logic cells	94,208
Multipliers/DSP blocks (18 * 18)	640
Block RAM	8,784 (kbits max)

Onboard DRAM

Memory size	128 MB
Theoretical maximum data rate	1,600 MB/s

Maximum Power Requirements

+3.3 VDC	3 A
+12 VDC	3 A
Total power	38.25 W

Physical Characteristics

Dimensions	3U, one slot, PXI Express module 21.6 cm * 2.0 cm * 13.0 cm (8.5 in * 0.8 in * 5.1 in)
Weight	397 g (13.4 oz)

Table 1. I/O Connectors
Connector Name	Type	Function
AI CH <0..1>	SMA	Analog input terminals for the NI PXIe-5641R
AO CH <0..1>	SMA	Analog output terminals for the NI PXIe-5641R
CLK IN	SMB	Input terminal for an external Reference Clock or Sample Clock
TRIG	SMB	Input or output terminal for device trigger signals
DIO (AUX I/O)	9-pin DIN mini-circular	Input or output terminal for device digital I/O (DIO) channels

Environment

Maximum altitude	2,000 m (800 mbar) (at 25 °C ambient temperature)
Pollution Degree	2

Indoor use only.

Operating Environment

Ambient temperature range	0 °C to 55 °C
Relative humidity range	10% to 90%, noncondensing

Storage Environment

Ambient temperature range	-40 °C to 71 °C
Relative humidity range	5% to 95%, noncondensing

Shock and Vibration

Operating shock	30 g peak, half-sine, 11 ms pulse
Random vibrationOperating5 Hz to 500 Hz, 0.3 grmsNonoperating5 Hz to 500 Hz, 2.4 grms

概述和用途

示意图

PXIe-5641 尺寸图

合规性

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