Analog Discovery 3 Specifications

These specifications are valid following 30 minutes of warm-up and are typical at 25 °C unless otherwise noted. WaveForms was used to determine these specifications.

Mixed Signal Oscilloscope

Analog Input Channels

Supports the Oscilloscope, Voltmeter, Data Logger, Spectrum Analyzer, Network Analyzer, Impedance Analyzer, Tracer, and Script Editor instruments.

Vertical System

Without BNC Adapter With BNC Adapter
Number of Channels Two
Input Type Differential Single-ended
Connector Type 100 mil 2×15 MTE Header BNC1)
Input Range ±2.5 V with respect to ground (5 V peak-to-peak)
±25 V with respect to ground (50 V peak-to-peak)
Resolution 14 bits (16-bit with averaging), 14-bit noise2)
Absolute Resolution3) 0.336 mV (scale ≤ 0.5 V/div)
3.36 mV (scale > 0.5 V/div)
Accuracy ±10 mV ± 0.5% (scale ≤ 0.5 V/div, VinCM = 0 V)
±100 mV ± 0.5% (scale > 0.5 V/div, VinCM = 0 V)
Bandwidth 9 MHz @ -3 dB, 2.9 MHz @ -0.5 dB, 0.8 MHz @ -0.1 dB 30+ MHz @ -3 dB, 15 MHz @ -0.5 dB, 6 MHz @ -0.1 dB4)
Input Impedance 1 MΩ ││ 24 pF
Input Coupling DC DC or AC
Vertical Sensitivity (range) 200 µV/div to 5 V/div (10 divisions)5)
CMMR ±0.5% (typical)
AC Coupling Cut-off Frequency N/A 1.6 Hz at -3 dB6)
Acquisition Modes average, decimate, min/max, record7)
Additional Channels On-device FIR filter for both inputs8), on-device loopback for Wavegen and Supplies outputs
Overvoltage Protection ±50 V DC or ±30 V RMS

DC Offset Range

Range Full Scale Offset Offset Accuracy
Low range (≤0.5 V/div) 5 V peak-to-peak ±2.5 V ±10 mV ± 0.5%
High range (>0.5 V/div) 50 V peak-to-peak ±25 V ±100 mV ± 0.5%
1) Only Analog inputs and Analog outputs use BNC connectors. All other pins pass through the BNC Adapter to a 100 mil 2×15 MTE header.
2) A separate small buffer to collect maximum and minimum samples when the sample rate is slower than the system frequency and is represented within WaveForms as noise.
3) Ideal values based on hardware design ranges of 5.5 V and 55 V. Actual values may vary slightly due to component variations and are accounted for during factory calibration. WaveForms only exposes nominal ranges of 5 V and 50 V.
4) When using a probe with the appropriate frequency response.
5) Divisions in this context are the ten horizontal strips in the Analog Input graph window within WaveForms. Vertical sensitivity specifies the height of one strip in the plot.
6) For a 5 V scope input range and 1.75 Hz for 50 V scope input range.
7) Up to 10 MHz for single channel acquisition.
8) Up to 16 coefficients.

Horizontal System

Maximum Sample Rate 125 MS/s per channel
Fine System Frequency Adjustment 50 MHz to 125 MHz1)
Buffer Size up to 32,768 samples per channel2)3)
Noise Buffer 1,024 samples

The above horizontal system specifications apply to Repeated/Shift/Screen modes. Record mode allows streaming acquisition data into host computer RAM at up to ~10 MS/s total, or to a file on the host computer disk at up to ~5 MS/s total. Achievable sample rates and recording lengths depend on host computer specifications.

1) Adjustable through the WaveForms Device Options. Shared with Analog Outputs and Digital I/O.
2) 65,536 samples when a single analog input channel is used.
3) Different preset buffer sizes can be chosen based on device configuration within the WaveForms Device Manager.

Digital Channels

Supports the Logic Analyzer, Pattern Generator, Static I/O, Protocol Analyzer, Oscilloscope, and Script Editor instruments.

Vertical System

Number of Channels 16
Connector 100 mil 2×15 MTE Header
Function Control Individually programmable as Digital I/O, Logic Analyzer, Pattern Generator, or Protocol
Input Voltage 0 V to 3.3 V (5 V tolerant)
Input Type LVCMOS (3.3 V, 5 V tolerant)
Input Logic Level Input Low Voltage, VIL, Min 0 V, Max 0.8 V
Input High Voltage, VIH, Min 2.0 V, Max 5 V
Output Type LVCMOS (3.3 V)
Output Logic Level Output Low Voltage, VOL, Min 0 V, Max 0.5 V
Output High Voltage, VOH, Min 2.4 V, Max 3.3 V
Slew Rate Slow (default), Fast1)
Drive Strength 4 (default), 8, 12, or 16 mA2)
Configurable Pull Resistors None (default), pull-up, pull-down, or keeper3)
Hardware Pull Resistors 1 MΩ pull-down resistors
Logic Analyzer Interpreters SPI, I2C, UART, CAN, I2S, 1-Wire, PS/2, HDMI CEC, Manchester codes, JTAG, GPIB, SWD, custom4)
Pattern Generator Constant, clock, pulse, random, number, Binary counter, Gray counter, Johnson counter, Decimal counter, walking 0/1, ROM Logic, custom5)
Custom Patterns File Import and export custom data as *.csv, *.txt or *.tdms file
Channel-to-Channel Skew 2 ns, typical
Overvoltage Protection Short-circuit to ground, ±20 V
1), 2) Configurable within WaveForms. Selected setting shared with all DIOs and Trigger IOs.
3) Internal to the FPGA and configurable within WaveForms. Selected setting shared with all DIOs and Trigger IOs.
4), 5) More options may be available in the latest version of the WaveForms software.

Horizontal System

Maximum Sampling Rate 125 MS/s per channel
Fine System Frequency Adjustment 50 MHz to 125 MHz1)
Logic Analyzer Buffer Memory up to 32,768 samples per channel2)
Pattern Generator Buffer Memory up to 32,768 samples per channel3)

The above horizontal system specifications apply to Repeated/Shift/Screen modes. Record mode allows streaming acquisition data into host computer RAM at up to ~10 MS/s total, or to a file on the host computer disk at up to ~5 MS/s total. Achievable sample rates and recording lengths depend on host computer specifications.

1) Adjustable through the WaveForms Device Options. Shared with Analog Inputs, Analog Outputs.
2), 3) Different preset buffer sizes can be chosen based on device configuration within the WaveForms Device Manager.

Arbitrary Waveform Generator (Wavegen)

Supports the Waveform Generator, Network Analyzer, Impedance Analyzer, Tracer, and Script Editor instruments.

Vertical System

Without BNC Adapter With BNC Adapter
Number of Channels 2
Output Type Single-ended
Connector Type 100 mil 2×15 MTE Header BNC1)
Standard Functions Sine, square, triangle, sawtooth, ramp up, ramp down, DC voltage, noise, trapezium, others
Advanced Waveforms Sweep, modulation and summing (phase, AM, FM), math, play mode, custom
Raw, averaged, or filtered Scope input data
Output Voltage Range ±5 V
Resolution 14 bits2)
Absolute Resolution 166 µV (│Vout│ ≤ 1.25 V)
665 µV (│Vout│ > 1.25 V)
Accuracy ±10 mV ± 0.5% (│Vout│ ≤ 1.25 V)
±25 mV ± 0.5% (│Vout│ > 1.25 V)
Output Impedance 0 Ω3) 0 Ω4) or 50 Ω (selectable by jumper)
Bandwidth 9 MHz @ -3 dB, 2.9 MHz @ -0.5 dB, 0.8 MHz @ -0.1 dB5) 12 MHz @ -3 dB, 4 MHz @ -0.5 dB, 1 MHz @ -0.1 dB6)
Sweep Modes Frequency and Amplitude. Up and down with selectable start/stop frequencies and settable time increments
Custom Waveform Files Supported Import files *.csv, *.txt, *.mp3, *.wav, *.wmv & *.avi, export as image, or as raw data in *.csv, *.txt or *.tdms formats
DC Current Drive 30 mA maximum7)
Slew Rate 400 V/µs (10 V step)
Overvoltage Protection Short-circuit to ground, ±15 V

DC Offset Range

Range Full Scale Offset Offset Accuracy
Low range 2.5 V peak-to-peak ±1.25 V ±10 mV ± 0.5%
High range 10 V peak-to-peak ±5 V ±25 mV ± 0.5%

Horizontal System

Maximum Sample Rate 125 MS/s per channel
Fine System Frequency Adjustment 50 MHz to 125 MHz8)
Buffer Size Up to 32,768 samples per channel9)10)
1) Only Analog inputs and Analog outputs use BNC connectors. All other pins pass through the BNC Adapter to a 100 mil 2×15 MTE header.
2), 10) Each channel also has a pair of 16-bit buffers used to store up to 8,192 samples of FM/PM and AM/SUM modulation parameters.
3), 4) Output impedance is not precisely controlled.
5) When using the included 2×15 flywire signal cable assembly.
6) When using a probe with the appropriate frequency response.
7) Maximum value for distortion free generation. Up to 40 mA can be supplied before hardware cutoff.
8) Adjustable through the WaveForms Device Options. Shared with Analog Inputs and Digital I/O.
9) Different preset buffer sizes can be chosen based on device configuration within the WaveForms Device Manager.

Pattern Generator

Shares digital input/output channels with Mixed Signal Oscilloscope: See the Digital Channels specifications for characteristics.

Trigger System

Trigger Features

Trigger Sources Oscilloscope analog channels, Arbitrary waveform generator start, Digital I/O lines, External triggers (TRIG1/TRIG2), Manual
Trigger Modes None, Auto, Manual (Forced Trigger), Single
Analog Trigger Edge, pulse, transition, condition, level, hysteresis, hold-off
Digital Trigger Edge, level, pattern, glitch
Analog/Oscilloscope Trigger Resolution 8 to 20 ns, depending on system frequency, 10 ns by default 1)
Digital/Logic Analyzer Trigger Resolution 8 to 20 ns, depending on system frequency, 10 ns by default 2)
1), 2) WaveForms uses interpolation for much more accurate value positioning.

External Triggers (TRIG1/TRIG2) Characteristics

Trigger 1 can be used to export or import a reference clock for the purposes of device synchronization.

See the Digital Channels specifications for the electrical characteristics of the External Triggers.

Additional Features

Spectrum Analyzer

Frequency Range 0 Hz to half of system clock frequency (50 MHz default)
Display Modes Magnitude, average, peak hold, min hold, count
Y Axis Logarithmic (dBṼ, dBu, dBm) or linear (volts)
X Axis Linear or Logarithmic
Power Spectrum Algorithms FFT, CZT
Windowing Functions Rectangular, Triangular, Hamming, Hann, Cosine, Blackman-Harris, Flat Top, Kaiser

Network Analyzer

Frequency Range 20 μHz to 9 MHz1), up to 10,001 steps
Display Modes Magnitude, Phase
Y Axis Linear or Logarithmic
X Axis Linear or Logarithmic
Plots Bode, Time, FFT, Nichols, Nyquist
1) Higher frequencies up to one quarter of the system frequency can be selected within WaveForms but results will be limited by the analog input bandwidth of the hardware.

Protocol Analyzer

Shares digital input/output channels with Mixed Signal Oscilloscope: See the Digital Channels specifications.

Protocols1) UART, SPI, I2C, CAN, CEC, JTAG, SWD, AVR
1) This functionality is implemented by WaveForms software on the host system.

Impedance Analyzer

Frequency Range 20 μHz to one quarter of the system clock frequency (25 MHz default), up to 10,001 steps
Display Modes Magnitude, Phase
Y Axis Linear or Logarithmic
X Axis Linear or Logarithmic
Plots Bode, Time, FFT, Nichols, Nyquist, Custom

Math Channels

Operations Addition “+”, Subtraction “-”, Multiplication “*”, Division “/”, Remainder “%”
Brackets Parenthesis “()”, Square “[]”
Constants Exp, Ln, Log, Pi
Functions Logarithm, power, minimum, maximum, square root, sine, cos, tan, arccos, arctan, arctan2, absolute value, round, floor, ceiling
Operands All analog and digital input channels, reference waveforms, time, constants, Pi
Custom Channels Butterworth, Chebyshev, Lock-In Amplifier

Programmable Power Supply

Number of Channels 2
Voltage Range 0.5 V to 5 V, -0.5 V to -5 V1)
Current Output Up to 800 mA or to 2.4 W per channel2), whichever limit is reached first
Voltage Readback Resolution 8 mV
Connector Type 2 pins included in the 100 mil 2×15 MTE Header
1) Optional tracking of the two supplies available within the Supplies Tool.
2) While using AUX power supply.

Connectivity

USB Interfaces

Device Connector USB Type-C® 1)2)
Host Connector USB Type-C® or USB Standard-A 3)4)
1) USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum.
2) USB-C® to USB-C® cable included.
3) Device uses USB 2.0 data rates.
4) USB Standard-A ports must provide USB 3.2 compatible power when an auxiliary power supply is not used.

Power Requirements

The Analog Discovery 3 does not require an auxiliary power supply for most functions. An auxiliary power supply is recommended when utilizing a significant amount of power on the programmable power supplies, analog output channels, and digital channels.

Auxiliary Power Supply Voltage 5 V
Auxiliary Power Supply Current 4 A recommended (3.1 A minimum)
Barrel Connector Size 5.5 mm × 2.1 mm (positive inner pin)

Physical Characteristics

Dimensions 10.0 cm × 10.0 cm × 2.0 cm (L × W × H)
(~3.94 in × ~3.94 in × ~0.79 in)
Weight 128 g (~4.5 oz)

Environmental

Ambient Operating Temperature 0 °C to 40 °C (32 °F to 104 °F)
Storage Temperature -20 °C to 60 °C (-4 °F to 140 °F)
Operating Humidity 10% to 90% RH non-condensing
Storage Humidity 5% to 95% RH non-condensing
Pollution Degree 2
Maximum Altitude 2000 m

Certifications

Analog Discovery 3 Declaration of Conformity