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High-Speed Voltage Buffer, SMA Feedthrough![]()
50LD Input SMA Output SMA View Showing Input Panel View Showing Output Panel ![]() Please Wait ![]() Click to Enlarge 50LD Input and Ouput Panels
Features
Thorlabs' High-Speed Voltage Buffer increases the available current for a low-impedance load that is being driven by a high-impedance source, while maintaining a 1:1 voltage gain through the system. The buffer has a 20 kΩ input impedance and a 50 Ω output impedance. This makes it ideal when trying to modulate a laser source, such as our 4-channel laser source, with a high-impedance controller, such as NI's PCIe-6321 and PCIe-6363 data acquisition boards. With a slew rate of 200 V/µs, the buffer can drive a fast analog or digital signal with minimal distortion of the input waveform, as shown in the performance plots below. It accepts an input voltage up to ±5 V and is powered using a side-located USB mini B connector. A USB Mini B to Male A cable is included with the device. The 50LD buffer is an in-line device that features a box design with two female SMA connectors, allowing it to be easily used between two SMA cables. Due to the larger size of this box, 2.51" x 1.25" x 1.00", it is not recommended that this buffer be attached directly to a load or control device. As shown in the images above, the box is engraved with the part number, input voltage range, input/output impedance values, voltage gain, and slew rate. The input signal was obtained using a waveform generator with a 20 kΩ impedance output and a 5 GHz oscilloscope with a 20 MΩ impedance input. The output waveform used the same waveform generator with the 50LD Voltage Buffer and a 5 GHz oscilloscope with a 50 Ω impedance input.
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![]() ![]() Click to Enlarge 50LD Mounted Using an ECM125 on a Ø1/2" Post Aluminum Clamps, Post Mountable Each clamp has a #8 (M4) counterbore on the bottom. The counterbore allows the clamp to be mounted on a Ø1/2" post or any surface with an 8-32 (M4) tap. The clamp must be mounted via the counterbore before the buffer housing is attached, as the counterbore will not be accessible once the housing is secured in the clamp. Plastic Clamp, Double Sided | |||||||||||||||||||||||||||||||||||
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