IDT Releases 3 New Low-Loss Ultra-Linear RF Variable Attenuator Products Targeting Wideband Communications Systems

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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

26 May 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.

Feature F1912 F1956 F2250
Attenuator Type DSA DSA VVA
# Bits 6 7 N/A
Frequency Range 1 to 4000 MHz 1 to 4000 MHz 50 to 6000 MHz
Characteristic Impedance 50Ω 50Ω 50Ω
Insertion Loss @ 2GHz 1.4 dB 1.3 dB 1.4 dB
Attenuation Step Size 0.5 dB 0.25 dB Analog
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 N/A
P0.1dB (P1dB) 31 dBm 34.5 dBm (+34.4 dBm)
ESD HBM 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
Package 4x4 mm 20L TQFN 5x5 mm 32L TQFN 3x3 mm 16L TQFN


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

The content in the press release, including, but not limited to, product prices and specifications, is based on the information as of the date indicated on the document, but may be subject to change without prior notice.