Richardson Electronics Introduces Selection of Wideband Attenuators from IDT

PR-IDT-Attenuators-01Glitch-Free™ digital step attenuators and voltage variable RF attenuators


LaFox, IL, Monday, April 4, 2016 – Richardson Electronics, Ltd. (NASDAQ: RELL) announced today the availability of a selection of wideband attenuators from Integrated Device Technology, Inc. (IDT).


The F1912, F1950, F1951, F1953 and F1956 are part of IDT’s family of Glitch-Free™ digital step attenuators optimized for the demanding requirements of base station radio cards and communications infrastructure applications. The silicon design results in very low insertion loss, low distortion and the devices offer pinpoint accuracy with excellent ESD protection. IDT’s Glitch-Free™ technology results in low overshoot and minimal ringing during MSB transitions.


These DSAs are offered in compact 4 mm x 4 mm QFN packages with 50Ω impedances for ease-of-integration.


According to IDT, additional key features of these Glitch-Free DSAs include:


Part Number Bits Attenuation Step (dB) Frequency Range (MHz) Supply Voltage (V) Pins IIP3 (dBm) Attenuation Error Insertion Loss
F1912 6 0.5 1–4000 3–5.25 20 +60 < 0.22 dB @ 2 GHz < 1.6 dB @ 2 GHz
F1950 7 0.25 150–4000 3–5.25 24 +65 < 0.3 dB @ 2 GHz < 1.3 dB @ 2 GHz
F1951 6 0.5 100–4000 3–5.25 24 +65 < 0.2 dB @ 2 GHz < 1.2 dB @ 2 GHz
F19531 6 0.5 400–4000 2.7–3.3 20 +60 < 0.5 dB @ 2 GHz < 1.4 dB @ 2 GHz
F1956 7 0.25 1–4000 3–5.25 32 +64 < ±0.2 dB @ 4 GHz < 1.7 dB @ 4 GHz

(1) The F1953 includes integrated DC blocking capacitors.


The F2250, F2255 and F2258 are low insertion loss, voltage variable RF attenuators designed for a variety of wireless and other RF applications. With broad frequency ranges, the devices also provide excellent linearity performance over the entire voltage control and attenuation range. These VVAs also feature a VMODE pin that allows either positive or negative voltage control slope vs. attenuation, and multi-directional operation, which means that the RF input can be applied to either RF1 or RF2 pins.


These VVAs are offered in 3 mm x 3 mm, 16-pin QFN (F2250 and F2255) and TQFN (F2258) packages.


According to IDT, additional key features of these VVAs include:


Part Number Frequency Range (MHz) Insertion Loss Supply Voltage (V) IIP3 (dBm) Attenuation Range (dB) Input P1dB Compression (dBm)
F2250 50–6000 1.4 dB @ 2000 MHz 3.15–5.25 +65 33.6 +34.4
F2255 1–3000 1.1 dB @ 500 MHz 3.15–5.25 +60 33 +36
F2258 50–6000 1.4 dB @ 2000 MHz 3.15–5.25 +65 33.6 +34.4


To find more information, please visit the IDT storefront at The devices are also available by calling 1-800-348-5580, emailing, or visiting Local Sales Support to locate worldwide sales engineers.


About Richardson Electronics, Ltd.

For nearly 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at


Richardson Electronics common stock trades on the NASDAQ Global Select Market under the ticker symbol RELL.


For Details Contact: 
Julie Teinert
Director, Strategic Marketing                  
Phone: (469) 344-8812