Appendix A - Specifications [UE9 Datasheet]

Parameter

Conditions

Min

Typical

Max

Units

General

USB Cable Length

5

meters

Ethernet Cable Length (1)

100

meters

Supply Voltage

3.6

5

5.3

volts

Typical Supply Current (2)

Control Low

85

105

mA

Control High

125

160

mA

Operating Temperature

-40

85

°C

Clock Error

~25°C

±30

ppm

-10 to 60 °C

±50

ppm

-40 to 85 °C

±100

ppm

Typ. Command Execution Time (3)

Ethernet

1.2

USB high-high

1.4

USB other

4

Vs Outputs

Typical Voltage, USB (4)

Self-Powered

4.5

5

5.25

volts

Typical Voltage, Wall-Wart

4.75

5

5.25

volts

Maximum Current (5)

200

mA

Vm+/Vm- Outputs

Typical Voltage

No-load

±5.8

volts

@ 1 mA

±5.6

volts

Maximum Current

1

mA

(1) Expected max Ethernet cable length is at least 100 meters by design, but we have only tested 33 meter cables. Customer feedback on longer cables is welcome.     

(2) Typical current drawn by the UE9 itself, not including any user connections. Minimum value is the typical current when the device is idle. Maximum value is the typical current when the device is very busy.     

(3) Total typical time to execute a single Feedback function with no analog inputs. Measured by timing a Windows application that performs 1000 calls to the Feedback function. See Section 3.1 for more timing information.     

(4) Self-powered would apply to USB hubs with a power supply, all known desktop computer USB hosts, and some notebook computer USB hosts.     

(5) This is the maximum current that should be sourced through the UE9 and out of the Vs terminals. The UE9 has internal overcurrent protection that will turn the UE9 off, if the total current draw exceeds ~490 mA.     

Parameter

Conditions

Min

Typical

Max

Units

Analog Inputs

Unipolar Input Range (6)

AINx to GND

0

5/G

volts

Bipolar Input Range (6)

AINx to GND

-5

5

volts

Maximum AIN Voltage (7)

AINx to GND

-15

15

volts

Input Bias Current (8)

@ 1 volts

-15

nA

Input Impedance (8)

>10

MΩ

Source Impedance (9)

10

kΩ

Temperature Drift

G=1

10

ppm/°C

Absolute Accuracy

Res 12-17

±0.025

±0.05

% FS

UE9-Pro, Res=18

±0.005

±0.01

% FS

Peak-to-Peak Noise

See Appendix B

Integral Linearity Error

G=1

±0.02

% FS

G=8

±0.03

% FS

UE9-Pro, Res=18

±0.0001

% FS

Differential Linearity Error

12-bit

±1

counts

16-bit

±4

counts

UE9-Pro, Res=18

±1

counts

Stream Data Buffer Size

182361

C/R Acquisition Time

See Section 3.1

1.2

125

ms

Stream Speed (10)

12-bit stream

up to 80k

samples/s

13-bit stream

16000

samples/s

14-bit stream

4000

samples/s

15-bit stream

1000

samples/s

16-bit stream

250

samples/s

Channel-to-Channel Delay (11)

12-bit stream

12

µs

13-bit stream

44

µs

14-bit stream

158

µs

15-bit stream

670

µs

16-bit stream

2700

µs

(6) For actual nominal input ranges see Section 2.7 of the UE9 User's Guide.     

(7) Maximum voltage to avoid damage to the device. Protection level is the same whether the device is powered or not. When the voltage on any analog input exceeds 6.0 volts, all other analog inputs are also affected, until the overvoltage is removed. At 6.5 volts, there is a ~1 mV offset noticed on other channels, increasing to a ~5 mV offset at 15.0 volts.     

(8) This is the steady state input bias current and impedance. When the analog input multiplexer changes from one channel to another at a different voltage, more current is briefly required to change the charge on the input amplifier. The steady state input bias current is very flat across the common mode voltage range, except for voltages of about 4.5 or higher where the bias current shifts to typically +250 nA     

(9) To meet specifications, the impedance of the source signal should be kept at or below the specified value. With a higher source impedance, noticable static errors can occur due to the bias current flowing through the source impedance. There are also dynamic errors that can become noticable as the source impedance can degrade the ability of the internal multiplexer to settle quickly when changing between channels with different voltages.     

(10) Divide by the number of channels to determine the maximum scan rate. Assumes an Ethernet or USB high-high connection. Other USB connections might not be able to maintain 50 ksamples/s. See Section 3.2 for more information.     

(11) When scanning more than 1 channel in a stream, this is the time between each sample within a scan.     

Parameter

Conditions

Min

Typical

Max

Units

Analog Outputs

Nominal Output Range (12)

No Load

0.02

4.86

volts

@ ±2.5 mA

0.225

4.775

volts

Resolution

12

bits

Absolute Accuracy (13)

5% to 95% FS

±0.1

% FS

Integral Linearity Error

±2

counts

Differential Linearity Error

±1

counts

Error Due To Loading

@ 100 µA

0.1

%

@ 1 mA

1

%

Source Impedance

50

Ω

Short Circuit Current

Max to GND

100

mA

Slew Rate

0.8

V/µs

Digital I/O

Low Level Input Voltage

-0.3

1

volts

High Level Input Voltage

2.3

Vs + 0.3

volts

Maximum Input Voltage (14)

FIO

-10

10

volts

EIO/CIO/MIO

-6

6

volts

Input Leakage Current

10

µA

Output Low Voltage (15)

No Load

0

volts

--- FIO

Sinking 1 mA

0.55

volts

--- EIO/CIO/MIO

Sinking 1 mA

0.18

volts

--- EIO/CIO/MIO

Sinking 5 mA

0.9

volts

Output High Voltage (15)

No Load

3.3

volts

--- FIO

Sourcing 1 mA

2.75

volts

--- EIO/CIO/MIO

Sourcing 1 mA

3.12

volts

--- EIO/CIO/MIO

Sourcing 5 mA

2.4

volts

Short Circuit Current (15)

FIO

6

mA

EIO/CIO/MIO

18

mA

Output Impedance(15)

FIO

550

Ω

EIO/CIO/MIO

180

Ω

Counter Input Frequency (16)

3

MHz

Input Timer Total Edge Rate (17)

No Stream

100000

edges/s

While Streaming

25000

edges/s

(12) Maximum and minimum analog output voltage is limited by the supply voltages (Vs and GND). The specifications assume Vs is 5.0 volts. Also, the ability of the DAC output buffer to drive voltages close to the power rails, decreases with increasing output current, but in most applications the output is not sinking/sourcing much current as the output voltage approaches GND.     

(13) Analog output accuracy is specified from 5% to 95% of full-scale output.     

(14) Maximum voltage to avoid damage to the device. Protection works whether the device is powered or not, but continuous voltages over 5.8 volts or less than -0.3 volts are not recommended when the UE9 is unpowered, as the voltage will attempt to supply operating power to the UE9 possibly causing poor start-up behavior.     

(15) These specifications provide the answer to the common question: "How much current can the digital I/O sink or source?". For instance, if EIO0 configured as output-high and shorted to ground, the current sourced by EIO0 into ground will be about 18 mA (3.3/180). If connected to a load that draws 5 mA, EIO0 can provide that current but the voltage will droop to about 2.4 volts instead of the nominal 3.3 volts. If connected to a 180 ohm load to ground, the resulting voltage and current will be about 1.65 volts @ 9 mA.     

(16) Hardware counters. 0 to 3.3 volt square wave. Default power level is "High".     

(17) To avoid missing edges, keep the total number of applicable edges on all applicable timers below this limit. See Section 2.10 for more information.