XDAC U-80
Nicslab XDAC U-80 (XDAC-80U-R4G8) 80-Channel Unipolar Source Measurement Unit
80-channel unipolar source measurement unit with 16-bit resolution, CC/CV modes up to 34 V and 300 mA, and USB/Ethernet control.
- Channels / Output Quadrant
- 80 / Unipolar (single-quadrant, source only)
- Operating modes
- Constant Current (CC, 0 – 300 mA) and Constant Voltage (CV, 0 – 34 V)
- Measurement Time
- 100 ms
- Max. Output Power
- 10 W per channel
Overview
The Nicslab XDAC U-80 (XDAC-80U-R4G8) is a compact multichannel source measurement system with 80 independently controlled unipolar channels. Each channel can source and measure voltage and current, making the system suitable for low-power applications ranging from simple electronic circuits to complex photonic integrated circuits.
The instrument operates in two modes: Constant Current (CC), from 0 to 300 mA per channel, and Constant Voltage (CV), from 0 to 34 V. Voltage and current are set with 16-bit resolution, and the maximum output power is 10 W per channel. Real-time voltage and current readback is available on every channel.
Basic and Premium versions
The Basic version operates on a fixed 0–34 V / 0–300 mA output range. The Premium upgrade adds software-selectable voltage sub-ranges (0–5 V, 0–10 V, 0–20 V) and current sub-ranges down to 0–3.125 mA, each with 16-bit resolution, along with configuration save and upload, CC/CV sequence automation, data recording, per-channel limits, threshold and short-circuit protection, and the SCPI software library.
Control and connectivity
The system is controlled through a graphical user interface or SCPI commands over Ethernet, with a USB-to-Ethernet adapter included for computers without an Ethernet port. Programming examples are provided for Python, and SCPI control is supported from MATLAB, LabVIEW and C#. The GUI runs on Windows, macOS and Linux. The unit is powered from a single external DC supply of 12 V to 36 V.
Key Features
- 80 independently controlled channels
- Unipolar single-quadrant sourcing, 0 to 34 V and 0 to 300 mA
- Constant Current (CC, 0–300 mA) and Constant Voltage (CV, 0–34 V) operating modes
- 16-bit voltage and current control
- Software-selectable voltage ranges 0–5 V, 0–10 V, 0–20 V and 0–34 V (Premium)
- Software-selectable current ranges from 0–300 mA down to 0–3.125 mA (Premium, firmware 4.1.1.1 and up)
- Real-time voltage and current reading on every channel
- Configurable reading speed via averaging samples and ADC conversion time
- Maximum output power of 10 W per channel
- Control via GUI or SCPI commands (Python, MATLAB, LabVIEW, C#)
- GUI for Windows, macOS and Linux
- Ethernet connectivity with USB-to-Ethernet adapter included
- Premium features: configuration save/upload, CC/CV sequence automation, data recording
- Per-channel voltage/current limits, threshold and short-circuit protection (Premium)
- Multi-connector options for DUT connection
- CE and RoHS3 (2015/863) compliant
Specifications
General
| Channels / Output Quadrant | 80 / Unipolar (single-quadrant, source only) |
|---|---|
| Operating modes | Constant Current (CC, 0 – 300 mA) and Constant Voltage (CV, 0 – 34 V) |
| Measurement Time |
100 ms
Manual states measurement time for single channel: 104 ms
|
| Max. Output Power | 10 W per channel |
| Calibration period | 2 years |
Voltage Source
| Voltage Sourcing Range |
0–5 V / 0–10 V / 0–20 V / 0–40 V (34 V)
Basic version fixed at 0–34 V; sub-ranges are a Premium feature
|
|---|---|
| Voltage Resolution | 0.15 – 0.6 mV (range-dependent) |
| Voltage Accuracy | ±0.04 – ±0.25 %FSR (range-dependent) |
| Slew Rate |
4 V/µs
All ranges except 0–5 V
|
| Voltage control resolution, 0 – 40 V (34 V) range |
0.6 mV
Default range
|
| Voltage control resolution, 0 – 20 V range | 0.3 mV |
| Voltage control resolution, 0 – 10 V range | 150 μV |
| Voltage control resolution, 0 – 5 V range | 76 μV |
DAC Voltage Performance
| Resolution |
16 Bits
Min
|
|---|---|
| Integral nonlinearity (INL) |
-1 / ± 0.5 / 1 LSB
Min / Typ / Max; all ranges
|
| Differential Nonlinearity (DNL) |
-1 / ± 0.5 / 1 LSB
Min / Typ / Max; specified 16-bit monotonic
|
| Total unadjusted error |
-0.1 / ± 0.01 / 0.1 %FSR
Min / Typ / Max; all ranges
|
| Unipolar offset error |
-0.03 / ± 0.015 / 0.03 %FSR
Min / Typ / Max; all unipolar ranges
|
| Unipolar zero-code error |
0 / 0.04 / 0.1 %FSR
Min / Typ / Max; all unipolar ranges
|
| Full-scale error |
-0.2 / ± 0.075 / ± 0.2 %FSR
Min / Typ / Max; all ranges
|
| Gain error |
-0.1 / ± 0.02 / 0.1 %FSR
Min / Typ / Max; all ranges
|
| Unipolar offset error drift |
±2 ppm of FSR/oC
Typ; all unipolar ranges
|
| Gain error drift |
±2 ppm of FSR/oC
Typ; all ranges
|
| Output voltage drift over time |
5 ppm of FSR
Typ; TA = 40 oC, full-scale code, 1900 hours
|
| Output Voltage Settling Time |
12 µs
Typ; ¼ to ¾ and ¾ to ¼ scale to ± 1 LSB, ±10 V range, RL = 5 k, CL = 200 pF
|
| Power-on glitch magnitude |
0.3 V
Typ; power-down to active DAC output, ±20 V range, midscale code, RL = 5 k, CL = 200 pF
|
| Output noise |
15 µV p-p
Typ; 0.1 Hz to 10 Hz, midscale code, 0 to 5 V range
|
| Output noise density |
78 nV/√Hz
Typ; 1 kHz, midscale code, 0 to 5 V range
|
| AC PSRR |
1 LSB/V
Typ; midscale code, 60 Hz, 200 mVpp superimposed on VDD, VCC, or VSS
|
| DC PSRR |
1 LSB/V
Typ; midscale code, VDD = 5 V, VCC = 20 V ±5 %, VSS = 20 V
|
| Code change glitch impulse |
4 nV-s
Typ; 1 LSB change around the major carrier, 0 to 5 V range
|
| Channel to Channel AC crosstalk |
4 nV-s
Typ; 0 to 5 V range, measured channel at midscale, full-scale swing on all other channels
|
| Channel to Channel DC crosstalk |
0.25 LSB
Typ; 0 to 5 V range, measured channel at midscale, all other channels at full-scale
|
| Digital feedthrough |
1 nV-s
Typ; 0 to 5 V range, midscale code, FSCLK = 1 MHz
|
Current Source
| Current Sourcing Range |
0 – 300 mA (unipolar, source only)
Sub-ranges down to 0–3.125 mA are a Premium feature (firmware 4.1.1.1 and up)
|
|---|---|
| Current Resolution |
10 µA (range-dependent)
Manual Table 6 lists 4.5 µA control resolution on the 0 – 300 mA range
|
| Current Accuracy |
±0.4 – ±1.4 %FSR
Total unadjusted error, 300 mA range
|
| Current control resolution, 0 – 300 mA range |
4.5 µA
Default range
|
| Current control resolution, 0 – 200 mA range | 3.05 µA |
| Current control resolution, 0 – 100 mA range | 1.52 µA |
| Current control resolution, 0 – 50 mA range | 0.76 µA |
| Current control resolution, 0 – 25 mA range | 0.38 µA |
| Current control resolution, 0 – 12.5 mA range | 0.19 µA |
| Current control resolution, 0 – 6.25 mA range | 95 nA |
| Current control resolution, 0 – 3.125 mA range | 47 nA |
DAC Current Performance
| Resolution |
16 Bits
Min
|
|---|---|
| Monotonicity |
16 Bits
Min
|
| Differential Nonlinearity |
± 0.2 / ±1 LSB
Typ / Max
|
| Integral Nonlinearity |
± 12 / ± 64 LSB
Typ / Max
|
| Offset Error Current |
± 0.1 / ± 0.4 %FSR
Typ / Max
|
| Gain Error |
± 0.3 / ± 0.9 %FSR
Typ / Max; 300 mA range
|
| Total Unadjusted Error |
± 0.4 / ± 1.4 %FSR
Typ / Max; 300 mA range
|
| Power Supply Rejection Ratio |
± 2.2 LSB
Typ; 100 mA; IOUT = 50 mA
|
| DC Crosstalk |
±14 LSB
Typ; due to a 200 mW change in dissipated power
|
| VDROPOUT |
1.15 / 1.751 V
Typ / Max; 300 mA range
|
| Hi-Z Output Leakage Current |
0.1 / 1 µA
Typ / Max
|
| tSET |
4.7 µs
Typ; settling time, full-scale 200 mA range
|
| Glitch Impulse |
180 pA.s
Typ; at mid-scale transition, 200 mA range
|
| DAC-to-DAC Crosstalk |
150 pA.s
Typ; 100 mA to 200 mA step, Rload = 15 Ω
|
Measurement
| Voltage Measurement |
0–34 V range, 1 mV resolution
Manual states real-time voltage reading 16-bit resolution = 1.25 mV
|
|---|---|
| Current Measurement |
0–300 mA range, 10 µA resolution
Manual states real-time current reading 16-bit resolution = 5 μA
|
| Averaging samples |
1, 4, 16, 64, 128, 256, 512, 1024 Samples
Selectable via measurement configuration
|
| V and I ADC conversion time |
50 µS, 84 µS, 150 µS, 280 µS, 540 µS, 1052 µS, 2074 µS, 4120 µS
Selectable via measurement configuration
|
Interfaces
| Control interface | Ethernet (USB-to-Ethernet adaptor included) |
|---|---|
| Front/back panel connections | USB-A, Ethernet, GPIO, pin output (40 channels per row) |
| Programming |
SCPI commands (Python, MATLAB, LabVIEW, C#)
SCPI via ZMQ Req-Rep on port 5555
|
| GUI operating systems | Windows 7, Windows 10, Windows 11, macOS Big Sur, Linux Ubuntu |
Power
| DC Power Supply Input |
12 V to 36 V (≥3 A Current Compliance)
Manual: will not power up if supply current is too low (minimum 2 A); power up minimum 72 W (36 V, 2 A setting)
|
|---|---|
| Required Headroom | 1.4 – 2 V |
Environmental
| Operating temperature | 0 ~ 40 ºC |
|---|---|
| Humidity | 5 ~ 80 % (No Condensing) |
| Compliance | CE and RoHS3 (2015/863) |
Physical
| Dimensions (H×W×L) | 102 × 232 × 450 mm |
|---|---|
| Weight | 6.5 kg |
Applications
- Photonic integrated circuit biasing and characterization
- Low-power electronic circuit sourcing and measurement
- Multichannel voltage and current biasing
- Automated CC/CV sequencing
Included
- XDAC-80U-R4G8 box
- DC power line cord (Red, Black), 2 pcs
- USB 2.0 to Ethernet adapter
- Ethernet cable
- USB flash disk with GUI, specification & manual, test report, XDAC key and CSV templates
Options & Accessories
| Option | Description |
|---|---|
| XDAC-80U-R4G8-BASIC | CCvCV, Basic — Constant current and constant voltage control, Basic software tier |
| Premium | Premium Upgrade — Software-selectable voltage/current ranges, configuration save/upload, CC/CV sequence automation, data recording, limits, threshold and short-circuit protection, SCPI software library |
| CV-only | CV-only control mode — Constant voltage control only, available in Basic and Premium software tiers |
| Multi-connector 6 | Multi-connector 6 (Optional) |
| Ribbon rainbow cable | Ribbon rainbow cable (Optional) |