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SPECIFICATIONSNI PXIe-7868RR Series Reconfigurable I/O Module (AI, AO, DIO) for PXI Express,6 AI, 18 AO, 48 DIO, 1 MS/s AIO, 512 MB DRAM,Kintex-7 325T FPGAThis document contains the specifications for the NI PXIe-7868R. Specifications are typical at25 C unless otherwise noted.Caution Using the NI PXIe-7868R in a manner not described in this documentmay impair the protection the NI PXIe-7868R provides.Analog InputNumber of channels6Input modes (software-selectable;selection applies to all channels)DIFF, NRSE, RSEType of ADCSuccessive approximation register (SAR)Resolution16 bitsConversion time1 µsMaximum sampling rate (per channel)1 MS/sInput impedancePowered on1.25 GΩ 2 pFPowered off/overload4 kΩ minimumInput signal range (software-selectable) 1 V, 2 V, 5 V, 10 VInput bias current 5 nAInput offset current 5 nAInput couplingDCOvervoltage protectionPowered on 42 V maximumPowered off 35 V maximum

Table 1. AI Operating Voltage Ranges Over TemperatureMeasurement Voltage, AI to AI-Maximum Working Voltage(Signal Common Mode)Range (V) Minimum (V)1 Typical (V) Maximum (V) 10 10.37 10.5 10.63 12 V of ground 5 5.18 5.25 5.32 10 V of ground 2 2.07 2.1 2.13 8.5 V of ground 1 1.03 1.05 1.06 8 V of groundAI Absolute AccuracyAbsolute accuracy at full scale numbers is valid immediately following internal calibration andassumes the device is operating within 10 C of the last external calibration. Accuracies listedare valid for up to one year from the device external calibration.Absolute accuracy at full scale on the analog input channels is determined using the followingassumptions: TempChangeFromLastExternalCal 10 C TempChangeFromLastInternalCal 1 C number of readings 10,000 CoverageFactor 3 σTable 2. AI Absolute Accuracy (Calibrated)Range 10 V 5 V 2 V 1 V104.4105.9110.6118.4Gain Tempco (ppm/ C)20202020Reference Tempco (ppm/ C)4444Residual Offset Error (ppm of Range)16.416.416.416.4Offset Tempco (ppm of Range/ C)4.184.174.414.63INL Error (ppm of range)42.5246.5246.5250.52SpecificationsResidual Gain Error (ppm of Reading)12 The minimum measurement voltage range is the largest voltage the NI PXIe-7868R is guaranteedto accurately measure.ni.com NI PXIe-7868R Specifications

Table 2. AI Absolute Accuracy (Calibrated) (Continued)RangeSpecificationsRandom Noise, σ (µVrms)Absolute Accuracy at Full Scale (µV) 10 V 5 V 2 V 1 V26315690742,2831,170479252Table 3. AI Absolute Accuracy (Uncalibrated)RangeSpecifications 10 V 5 V 2 V 1 V2,9213,0213,0213,021Gain Tempco (ppm/ C)20202020Reference Tempco (ppm/ C)4444Residual Offset Error (ppm of Range)661671700631Offset Tempco (ppm of Range/ C)4.184.174.414.63INL Error (ppm of range)42.5246.5246.5250.52Random Noise, σ (µVrms)263156907436,89519,0187,6673,769Residual Gain Error (ppm of Reading)Absolute Accuracy at Full Scale (µV)Calculating Absolute Accuracy ( ) ( ) ( ℎ ( ℎ ) ( ℎ ) NI PXIe-7868R Specifications National Instruments 3

Refer to the following equation for an example of calculating absolute accuracy for a 10 Vreading.Absolute accuracy at full scale on the analog input channels is determined using the followingassumptions: TempChangeFromLastExternalCal 10 C TempChangeFromLastInternalCal 1 C number of readings 10,000 CoverageFactor 3 σ 104.4 ppm 20 ppm 1 4 ppm 10 164.4 ppm 16.4 ppm 4.18 ppm 1 42.52 ppm 63.1 ppm 263 µV 310, 000 7.89 µ 10 V ( ) 10 V ( ) 2, 283 µ DC Transfer CharacteristicsINLRefer to the AI Accuracy TableDNL 0.4 LSB typical, 0.9 LSB maximumNo missing codes16 bits guaranteedCMRR, DC to 60 Hz-100 dB4 ni.com NI PXIe-7868R Specifications

Dynamic CharacteristicsBandwidthSmall signal1 MHzLarge signal500 kHzTable 4. Settling TimeAccuracyRange (V)Step Size (V) 16 LSB 4 LSB 2 LSB 10 20.01.50 µs4.00 µs7.00 µs 2.00.50 µs0.50 µs1.00 µs 0.20.50 µs0.50 µs0.50 µs 101.50 µs3.50 µs7.50 µs 10.50 µs0.50 µs1.00 µs 0.10.50 µs0.50 µs0.50 µs 41.00 µs3.50 µs8.00 µs 0.40.50 µs0.50 µs1.00 µs 0.040.50 µs0.50 µs0.50 µs 21.00 µs3.50 µs12.00 µs 0.20.50 µs0.50 µs2.00 µs 0.020.50 µs0.50 µs0.50 µs 5 2 1Crosstalk-80 dB, DC to 100 kHz, at 50 ΩAnalog OutputOutput typeSingle-ended, voltage outputNumber of channels18Resolution16 bitsUpdate time1 μsMaximum update rate1 MS/sType of DACEnhanced R-2RNI PXIe-7868R Specifications National Instruments 5

Range 10 VOutput couplingDCOutput impedance0.5 ΩCurrent drive 2.5 mAProtectionShort circuit to groundOvervoltage protectionPowered on 15 V maximumPowered off 10 V maximumPower-on stateUser-configurablePower-on glitch1 V for 1 µsPower-down glitch3.7 V peak, decays to 0 V in 7 msTable 5. AO Operating Voltage Ranges for Over TemperatureMeasurement Voltage, AO to AO GNDRange (V)Minimum (V)2Typical (V)Maximum (V) 10 10.1 10.16 10.22AO Absolute AccuracyAbsolute accuracy at full scale numbers is valid immediately following internal calibration andassumes the device is operating within 10 C of the last external calibration. Accuracies listedare valid for up to one year from the device external calibration.Absolute accuracy at full scale on the analog output channels is determined using thefollowing assumptions: TempChangeFromLastExternalCal 10 C TempChangeFromLastInternalCal 1 CTable 6. AO Absolute Accuracy (Calibrated)Specifications 10 V RangeResidual Gain Error (ppm of Reading)87.3Gain Tempco (ppm/ C)12.6Reference Tempco (ppm/ C)26 4The minimum measurement voltage range is the largest voltage the NI PXIe-7868R is guaranteedto accurately measure.ni.com NI PXIe-7868R Specifications

Table 6. AO Absolute Accuracy (Calibrated) (Continued)Specifications 10 V RangeResidual Offset Error (ppm of Range)41.1Offset Tempco (ppm of Range/ C)7.8INL Error (ppm of range)61Absolute Accuracy at Full Scale (µV)2,498Table 7. AO Absolute Accuracy (Uncalibrated)Specifications 10 V RangeResidual Gain Error (ppm of Reading)2,968.6Gain Tempco (ppm/ C)12.6Reference Tempco (ppm/ C)4Residual Offset Error (ppm of Range)1,004.1Offset Tempco (ppm of Range/ C)7.8INL Error (ppm of range)61Absolute Accuracy at Full Scale (µV)40,941Calculating Absolute Accuracy ( ) ( ) ( ℎ ) ( ℎ ) ( ℎ ) Refer to the following equation for an example of calculating absolute accuracy for a 10 Vreading.Absolute accuracy at full scale on the analog output channels is determined using thefollowing assumptions: TempChangeFromLastExternalCal 10 C TempChangeFromLastInternalCal 1 CNI PXIe-7868R Specifications National Instruments 7

87.3 12.6 1 4 10 139.9 41.1 7.8 1 61 109.9 10 ( ) 10 ( ) 2, 498 µ DC Transfer CharacteristicsINLRefer to the AO Accuracy TableDNL 0.5 LSB typical, 1 LSB maximumMonotonicity16 bits, guaranteedDynamic CharacteristicsTable 8. Settling TimeAccuracyStep Size (V) 16 LSB 4 LSB 2 LSB 20.05.3 µs6.5 µs7.8 µs 2.03.2 µs3.9 µs4.4 µs 0.21.8 µs2.8 µs3.8 µsSlew rate10 V/µsNoise250 µV RMS, DC to 1 MHzGlitch energy at midscale transition 10 mV for 3 µs5V OutputOutput voltage4.75 V to 5.1 VOutput current0.5 A maximum8 ni.com NI PXIe-7868R Specifications

Overvoltage protection 30 VOvercurrent protection650 mADigital I/OTable 9. Channel FrequencyConnectorNumber of ChannelsMaximum FrequencyConnector 01610 MHzConnector 13280 MHzCompatibilityLVTTL, LVCMOSLogic familyFixedVoltage level3.3 VTable 10. Digital Input Logic LevelsLogic FamilyInput Low Voltage (VIL) MaximumInput High Voltage (VIH) Minimum3.3 V0.80 V2.00 VMinimum input-0.3 VMaximum input3.6 VInput leakage current 15 µA maximumInput impedance50 kΩ typical, pull-downTable 11. Digital Output Logic LevelsOutput Low Voltage (VOL)MaximumOutput High Voltage (VOH)Minimum100 µA0.20 V3.00 V4 mA0.40 V2.40 VLogic Family Current3.3 VMaximum DC output current per channelSource4.0 mASink4.0 mANI PXIe-7868R Specifications National Instruments 9

Output impedance50 ΩPower-on state3Programmable, by lineProtection4 15 V, single lineDirection control of digital I/O channelsPer channelMinimum I/O pulse width6.25 nsMinimum sampling period5 nsExternal ClockDirectionInput into deviceMaximum input leakage 15 µACharacteristic impedance50 ΩPower-on stateTristatedMinimum input-0.3 VMaximum input3.6 VLogic level3.3 VMaximum input frequency80 MHzReconfigurable FPGAFPGA typeKintex-7 325TNumber of flip-flops407,600Number of LUTs203,800Embedded Block RAM16,020 kbitsNumber of DSP48 slices840Timebase40 MHz, 80 MHz, 120 MHz, 160 MHz, or200 MHzDefault timebase40 MHzTimebase reference sourcePXI Express 100 MHz (PXIe CLK100)3410 Tristate by default.NI recommends minimizing long-term over/under-voltage exposure to the Digital I/O. ProlongedDC voltage stresses that violate the maximum and minimum digital input voltage ratings mayreduce device longevity. Over/under-voltage stresses are considered prolonged if the cumulativetime in the abnormal condition exceeds 1 year.ni.com NI PXIe-7868R Specifications

Timebase accuracy 100 ppm, 250 ps peak-to-peak jitterData transfersDMA, interrupts, programmed I/OOnboard DRAMMemory size1 Bank; 512 MBMaximum theoretical data rate800 MB/s streamingSynchronization ResourcesInput/output sourcePXI Trig 0.7 Input sourcePXI Star, PXIe DStarA, PXIe DStarB,PXI Clk10, PXIe Clk100, External Clock 1Output sourcePXIe DStarCBus InterfaceForm factorx4 PXI Express, specification v1.0 compliantSlot compatibilityx4, x8, and x16 PXI Express or PXI Expresshybrid slotsData transfersDMA, interrupts, programmed I/ONumber of DMA channels16Maximum Power RequirementsPower requirements are dependent on the digital output loads and configuration of theLabVIEW FPGA VI used in your application. 3.3 V3A 12 V2ANI PXIe-7868R Specifications National Instruments 11

Physical CharacteristicsIf you need to clean the device, wipe it with a dry, clean towel.Tip For two-dimensional drawings and three-dimensional models of the device andconnectors, visit ni.com/dimensions and search by model number.Dimensions18.5 cm 17.3 cm 3.6 cm(7.3 in. 6.8 in. 1.4 in.)Weight176.3 g (6.22 oz)I/O connectors3 68-pin VHDCIMaximum Working VoltageMaximum working voltage refers to the signal voltage plus the common-mode voltage.Channel-to-earth 12 V, Measurement Category IChannel-to-channel 24 V, Measurement Category IMeasurement Category I is for measurements performed on circuits not directly connected tothe electrical distribution system referred to as MAINS voltage. MAINS is a hazardous liveelectrical supply system that powers equipment. This category is for measurements of voltagesfrom specially protected secondary circuits. Such voltage measurements include signal levels,special equipment, limited-energy parts of equipment, circuits powered by regulated lowvoltage sources, and electronics.Caution Do not use the NI PXIe-7868R for connection to signals in MeasurementCategories II, III, or IV.Note Measurement Categories CAT I and CAT O (Other) are equivalent. These testand measurement circuits are not intended for direct connection to the MAINSbuilding installations of Measurement Categories CAT II, CAT III, or CAT IV.SafetyThis product is designed to meet the requirements of the following electrical equipment safetystandards for measurement, control, and laboratory use: IEC 61010-1, EN 61010-1 UL 61010-1, CSA C22.2 No. 61010-1Note For UL and other safety certifications, refer to the product label or the OnlineProduct Certification section.12 ni.com NI PXIe-7868R Specifications