Analog Discovery 2 Low Noise Differential Amplifier BNC AdapterDesigned by DC Innovation, LLC in United States of America
What is it? This AD2 add-on replaces the normal BNC adapter board and gives a lot of functionality and extras not normally available on USB oscilloscopes. These features allow you to go from stumpe...Read More…
This AD2 add-on replaces the normal BNC adapter board and gives a lot of functionality and extras not normally available on USB oscilloscopes. These features allow you to go from stumped to a diagnostics go-to guy
I kept finding myself needing to take differential and low voltage measurements but not having the ability with only the AD2 and BNC adapter
This product lets you see the unseen, find the ground plane noise you were wondering about, measure small currents and find the noise levels of your LDO regulator.
It lets you take differential and single ended measurements at the normal voltage range, as well as 100X and 1000x amplification. It's like adding a microscope for electricity to your oscilloscope!
It also lets you see the differential as well as a single ended trace simultaneously (without amplification).
It includes an adjustable low pass filter, so you can see DC effects without all the noise. Imagine being able to measure small currents even with small resistance shunts!
The AD2 is great because you have the convenience of everything (a scope, function generator, digital logic analyzer, network analyzer, etc.) all in one place. This product not only passes all these features through (including one existing differential input) but also adds the amplifier and analog filter. You can leave everything connected and change functionality with the flip of a switch.
The amplifier is Texas Instruments INA849. Some of the aspects that make this a great IC for the application include:
• Ultra-low noise: 1-nV/√Hz input voltage noise (typical) • Precision super-beta input performance: – Low offset voltage: 35 µV (maximum) – Low offset voltage drift: 0.4 μV/°C (maximum) – Low input bias current: 20 nA (maximum) – Low gain drift: 5 ppm/°C for G = 1 (maximum) • Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100) • Slew rate: 35 V/µs • Common-mode rejection: 120 dB (minimum) for maximum gain
In this product the gain is set to 100 (the 1000x setting adds a second op amp), so the bandwidth is 8Mhz. This is fast enough to even work with digital logic applications.
The Analog Discovery 2 with this amplifier can make you an even greater electronics engineer or hobbyist, without needing the magical intuition that the seasoned guys seem to have.
These beta products are being released at a discounted price for customer feedback. Don't miss out!
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