USB-6341 Specifications - National Instruments - NI

1 SPECIFICATIONSUSB-634116 AI (16-Bit, 500 kS/s), 2 AO (900 kS/s), 24 DIO USB MultifunctionI/O DeviceDefinitionsWarranted Specifications describe the performance of a model under stated operatingconditions and are covered by the model describe values that are relevant to the use of the model under stated operatingconditions but are not covered by the model warranty. Typical Specifications describe the performance met by a majority of models. Nominal Specifications describe an attribute that is based on design, conformance testing,or supplemental are Typical unless otherwise are valid at 25 C unless otherwise InputNumber of channels16 single ended or 8 differentialADC resolution16 bitsDNLNo missing codes guaranteedINLR efer to AI Absolute rateSingle channel maximum500 kSample/sMultichannel maximum (aggregate)500 kSample/sMinimumNo minimumTiming resolution10 nsTiming accuracy50 ppm of sample rateInput couplingDCInput range V, 1 V, 5 V, 10 VMaximum working voltage for analoginputs (signal + common mode) 11 V of AI GNDCMRR (DC to 60 Hz)

2 100 dBInput impedanceDevice onAI+ to AI GND>10 G in parallel with 100 pFAI- to AI GND>10 G in parallel with 100 pFDevice offAI+ to AI GND1,200 AI- to AI GND1,200 Input bias current 100 pACrosstalk (at 100 kHz)Adjacent channels-75 dBNon-adjacent channels-90 dBSmall signal bandwidth (-3 dB) MHzInput FIFO size2,047 samplesScan list memory4,095 entriesData transfersUSB Signal Stream, programmed I/OOvervoltage protection for all analog input and sense channelsDevice on 25 V for up to two AI pinsDevice off 15 V for up to two AI pinsInput current during overvoltage condition 20 mA maximum/AI pin2 | | USB-6341 SpecificationsSettling Time for Multichannel MeasurementsSettling time for multichannel measurements, accuracy, full-scale step, all ranges 90 ppm of step ( 6 LSB)2 s convert interval 30 ppm of step ( 2 LSB)3 s convert interval 15 ppm of step ( 1 LSB)5 s convert intervalTypical Performance GraphFigure 1.

3 Settling Error versus Time for Different Source Impedances11001 k10 k1010100 Time ( s)Error (ppm of Step Size)5 k 10 k 100 1 k 2 k AI Absolute Accuracy (Warranted)Table 1. AI Absolute AccuracyNominalRangePositiveFull Scale(V)NominalRangeNegativeFull Scale(V)ResidualGain Error(ppm ofReading)ResidualOffsetError (ppmof Range)OffsetTempco(ppm ofRange/ C)RandomNoise, ( Vrms)AbsoluteAccuracy atFull Scale( V) 10-106513232702,1905-57213231351,130 USB-6341 Specifications | National Instruments | 3 Table 1. AI Absolute Accuracy (Continued)NominalRangePositiveFull Scale(V)NominalRangeNegativeFull Scale(V)ResidualGain Error(ppm ofReading)ResidualOffsetError (ppmof Range)OffsetTempco(ppm ofRange/ C)RandomNoise, ( Vrms)AbsoluteAccuracy atFull Scale( V) Absolute accuracy at full scale on the analog input channels is determinedusing the following assumptions.

4 TempChangeFromLastExternalCal = 10 C TempChangeFromLastInternalCal = 1 C number_of_readings = 10,000 CoverageFactor = 3 For more information about absolute accuracy at full scale, refer to the AI Absolute AccuracyExample Accuracies listed are valid for up to two years from the device ppm/ CReference tempco5 ppm/ CINL error60 ppm of rangeAI Absolute Accuracy EquationAbsoluteAccuracy = Reading (GainError) + Range (OffsetError) + NoiseUncertainityGainError = ResidualGainError + GainTempco (TempChangeFromLastInternalCal) +ReferenceTempco (TempChangeFromLastExternalCal)OffsetErr or = ResidualOffsetError + OffsetTempco (TempChangeFromLastInternalCal)+ INLE rrorNoiseUncertainty = RandomNoise 310,000 for a coverage factor of 3 and averaging10,000 Absolute Accuracy ExampleFor example, on the 10 V range, the absolute accuracy at full scale is as follows:GainError: 65 ppm + ppm 1 + 5 ppm 10 = 122 ppmOffsetError: 13 ppm + 23 ppm 1 + 60 ppm = 96 ppm4 | | USB-6341 SpecificationsNoiseUncertainty: 270 V 310,000 = VAbsoluteAccuracy.

5 10 V (GainError) + 10 V (OffsetError) + NoiseUncertainty =2,190 VAnalog OutputNumber of channels2 DAC resolution16 bitsDNL 1 LSBM onotonicity16 bit guaranteedMaximum update rate (simultaneous)1 channel900 kSample/s2 channels840 kSample/s per channelTiming accuracy50 ppm of sample rateTiming resolution10 nsOutput range 10 VOutput couplingDCOutput Output current drive 5 mAOverdrive protection 15 VUSB-6341 Specifications | National Instruments | 5 Overdrive current15 mAPower-on state 20 mVPower-on/off V for s1 Output FIFO size8,191 samples shared among channels usedData TransfersUSB Signal Stream, programmed I/OAO waveform modesNon-periodic waveform, periodic waveformregeneration mode from onboard FIFO,periodic waveform regeneration from hostbuffer including dynamic updateSettling time, full-scale step.

6 15 ppm(1 LSB)6 sSlew rate15 V/ sGlitch energyMagnitude100 sAO Absolute AccuracyTable 2. AO Absolute AccuracyNominalRangePositiveFullScale(V) NominalRangeNegativeFullScale(V)Residual GainError(ppm ofReading)GainTempco(ppm/ C)ReferenceTempco(ppm/ C)ResidualOffsetError(ppm ofRange)OffsetTempco(ppm ofRange/ C)INLE rror(ppmofRange)AbsoluteAccuracyat FullScale( V) ,271 Note Absolute Accuracy at Full Scale numbers are valid immediately followingself calibration and assumes the device is operating within 10 C of the last Accuracies listed are valid for up to two years from the device behavior. Time period may be longer due to host system USB performance.

7 Time periodwill be longer during firmware | | USB-6341 SpecificationsAO Absolute Accuracy EquationAbsoluteAccuracy = OutputValue (GainError) + Range (OffsetError)GainError = ResidualGainError + GainTempco (TempChangeFromLastInternalCal) +ReferenceTempco (TempChangeFromLastExternalCal)OffsetErr or = ResidualOffsetError + OffsetTempco (TempChangeFromLastInternalCal)+ INLE rrorDigital I/O/PFIS tatic CharacteristicsNumber of channels24 total, 8 (P0.< >), 16 (PFI < >/P1,PFI < >/P2)Ground referenceD GNDD irection controlEach terminal individually programmable asinput or outputPull-down resistor50 k typical, 20 k minimumInput voltage protection 20 V on up to two pinsCaution Stresses beyond those listed under the Input voltage protectionspecification may cause permanent damage to the Characteristics (Port 0 Only)Terminals usedPort 0 (P0.)

8 < >)Port/sample sizeUp to 8 bitsWaveform generation (DO) FIFO2,047 samplesWaveform acquisition (DI) FIFO255 samplesDO or DI Sample Clock frequency0 to 1 MHz, system and bus activity dependentData transfersUSB Signal Stream, programmed I/ODigital line filter settings160 ns, s, ms, disableUSB-6341 Specifications | National Instruments | 7 PFI/Port 1/Port 2 FunctionalityFunctionalityStatic digital input, static digital output, timinginput, timing outputTiming output sourcesMany AI, AO, counter, DI, DO timing signalsDebounce filter settings90 ns, s, ms, custom interval,disable; programmable high and lowtransitions; selectable per inputRecommended Operating ConditionsInput high voltage (VIH) VInput low voltage (VIL)Minimum0 VOutput high current (IOH)P0.

9 < >-24 mA maximumPFI < >/P1/P2-16 mA maximumOutput low current (IOL)P0.< >24 mA maximumPFI < >/P1/P216 mA maximumDigital I/O CharacteristicsPositive-going threshold (VT+) V maximumNegative-going threshold (VT-) V minimumDelta VT hysteresis (VT+ - VT-) V minimumIIL input low current (VIN = 0 V)-10 A maximumIIH input high current (VIN = 5 V)250 A maximum8 | | USB-6341 SpecificationsFigure 2. P0.< >: IOH versus VOHIOH (mA) 30 5 10 15 20 25 35 40 45 VOH (V)0 5055 C; Vdd = V25 C; Vdd = V0 C; Vdd = V62345 Figure 3. P0.< >: IOL versus (mA) (V)4000 C; Vdd = V25 C; Vdd = V55 C; Vdd = VUSB-6341 Specifications | National Instruments | 9 Figure 4.

10 PFI < >/P1/P2: IOH versus VOH5 IOH (mA) 30 5 10 15 20 25 35 40 45234 VOH (V)0 50655 C; Vdd = V25 C; Vdd = V0 C; Vdd = VFigure 5. PFI < >/P1/P2: IOL versus (mA) (V)00 C; Vdd = V25 C; Vdd = V55 C; Vdd = V40 General-Purpose CountersNumber of counter/timers4 Resolution32 bits10 | | USB-6341 SpecificationsCounter measurementsEdge counting, pulse, pulse width,semi-period, period, two-edge separationPosition measurementsX1, X2, X4 quadrature encoding withChannel Z reloading; two-pulse encodingOutput applicationsPulse, pulse train with dynamic updates,frequency division, equivalent time samplingInternal base clocks100 MHz, 20 MHz, 100 kHzExternal base clock frequency0 MHz to 25 MHzBase clock accuracy50 ppmInputsGate, Source, HW_Arm, Aux, A, B, Z,Up_Down, Sample ClockRouting options for inputsAny PFI, many internal signalsFIFO127 samples per counterData transfersUSB Signal Stream, programmed I/OFrequency GeneratorNumber of channels1 Base clocks20 MHz, 10 MHz, 100 kHzDivisors1 to 16 Base clock accuracy50 ppmOutput can be available on any PFI or RTSI Loop (PLL)