Next-Generation Digital Step Attenuators F1912 and F1956 Provide Glitch-Free Attenuation Transitions, and the F2250 Voltage Variable Attenuator Delivers Linearity in dB Analog Tuning

May 26, 2015

SAN JOSE, Calif., May 26, 2015--Integrated Device Technology, Inc. (IDT®) (NASDAQ:IDTI) announced today that it has expanded its advanced RF silicon solutions with the addition of two new Glitch-FreeTM digital step attenuators (DSAs), as well as its first product in a new family of voltage variable attenuators (VVAs). These next-generation attenuators feature wide bandwidths, low insertion loss, high linearity, pinpoint attenuation accuracy, and a wide temperature range. Pin compatible with competitor devices, these products are designed to meet the stringent demands of wireless infrastructure, point-to-point microwave, satellite communications systems and general purpose communication infrastructure applications.

The 6-bit F1912 and 7-bit F1956 DSAs feature IDT’s industry-first breakthrough Glitch-Free technology, which eliminates attenuation setting overshoot (glitches) from the transmit and/or receive paths by reducing transient “glitches” during most significant bit (MSB) transitions by up to 95 percent. Glitch-Free response enables customers to simplify their software interface, improve reliability, prevent damage to expensive sub-assemblies such as power amplifiers, and limit over-ranging of data converter inputs.

The F2250 is the first in a new family of VVAs and features a frequency range of 50 – 6000MHz, an insertion loss of 1.4dB at 2GHz, high IP3I linearity of 65dBm and wide temperature range of -40 to 105C. The Vmode feature allows customers to select either positive or negative attenuation control with a highly linear-in-dB attenuation characteristic.

“Continuously evolving system requirements have driven the rapid expansion of IDT’s RF product portfolio.  These new attenuator products offer customers a compelling upgrade path toward better linearity, higher reliability, and lower solution cost,” said Chris Stephens, general manager of IDT’s RF division. “These new drop-in compatible attenuators allow development engineers to exceed evolving system requirements with maximum re-use of existing printed circuit boards.”

Pricing and Availability

            The 1000 unit prices are: F1912 = $2.03, F1956 = $2.54 and F2250 = $2.59. Samples and evaluation kits are available for all products immediately. Production quantities for F1912 and F1956 will be available June 23, 2015 and F2250 production quantities will be available on May 22, 2015.






Attenuator Type




# Bits




Frequency Range

1 to 4000 MHz

1 to 4000 MHz

50 to 6000 MHz

Characteristic Impedance




Insertion Loss @ 2GHz

1.4 dB

 1.3 dB

1.4 dB

Attenuation Step Size

0.5 dB

0.25 dB


Attenuation Range

31.5 dB

31.75 dB

33.6 dB

Typical IIP3

64 dBm

64 dBm

65 dBm

Typical IIP2

110 dBm

110 dBm

95 dBm

Attenuation Error @ 2GHz

0. 0.30 dB

 0.1 dB


P0.1dB (P1dB)

31 dBm

34.5 dBm

(+34.4 dBm)


Class  1C

Class  1C

Class 1C

Supply Voltage Range

3.0 to 5.25 V

3.0 to 5.25 V

3.15 to 5.25 V

Control Voltage Ranges

1.8V / 3.3V

1.8V / 3.3V

0 to 2.8 V

Temperature Range

-40 to 105 C

-40 to 105 C

-40 to 105 C


4x4 mm 20L TQFN

5x5 mm 32L TQFN

3x3 mm 16L TQFN

About IDT

Integrated Device Technology, Inc. develops system-level solutions that optimize its customers’ applications. IDT uses its market leadership in timing, serial switching and interfaces, and adds analog and system expertise to provide complete application-optimized, mixed-signal solutions for the communications, computing and consumer segments. Headquartered in San Jose, Calif., IDT has design, manufacturing, sales facilities and distribution partners throughout the world. IDT stock is traded on the NASDAQ Global Select Stock Market® under the symbol “IDTI.” Additional information about IDT is accessible at Follow IDT on Facebook, LinkedIn, Twitter, YouTube and Google+.


IDT and the IDT logo are trademarks or registered trademarks of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners

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