| 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. |
2 comments
Looking at the Differential
Looking at the Differential Linearity Error, how does "number of counts" translate into voltage error? Do we assume the Vref of the ADC is 5V? If so, for a 12-bit ADC, then one LSB = one count = Vref/2^N =5/4096 = 1.22mV. So that's the DNL. The INL error is 0.02% of FS = 0.0002*5=1mV. Do those two errors simply add up to give 2.22mV of total non-linearity error?
Thanks for the help.
Wiki has general info about
Wiki has general info about DNL and INL. To translate counts into voltage, it depends on the range. If you are using the 0-5 volt range, then your calculation for the weight of 1 12-bit count is correct.
You should not have to add DNL and INL. INL should include DNL. I think the fact that DNL actually looks slight bigger than INL for a 12-bit G=1 measurement is just the limitation of a 12-bit measurement. Both errors together are within 1 count, so we can't look closer to separate them.
Absolute Accuracy includes DNL and INL and other error sources.