RFMD's Temperature-Compensating Attenuators
http://www.rfmd.com/
RF Micro Devices (RFMD.com), offering cutting-edge innovation in the design and manufacture of high-performance semiconductor technologies and RF systems, provides the RFSA4013 and RFSA4023. These are fully monolithic analog Temperature-Compensating Attenuators (TCAs), featuring exceptional linearity over their entire gain control range. These TCAs are designed to offset the gain reduction of an RF component over temperature, without the need for closed loop feedback. Three customer selectable temperature coefficients make these TCAs a flexible solution for RF lineups. Each attenuator incorporates revolutionary new circuit architecture that solves a longstanding industry problem with regards to attenuator architecture: high IP3, low DC current and broad bandwidth. Traditional approaches for linear temperature-compensating devices require expensive co-fired ceramics with temperature-sensitive materials or current-hungry PIN diodes with elaborate area consuming control circuits. The RFSA4013 and RFSA4023 only require a single supply voltage and two logic bits to set the control attenuation slope versus temperature. Each TCA draws a very low 1mA current and is packaged in a small 3mm x 3mm QFN. These attenuators are internally matched to 50Ω over their rated control range and frequency. Features for the TCAs include: Innovative Circuit Architecture, Broadband 50MHz to 4000MHz Frequency Range, 3 Selectable Attenuation versus Temperature Slopes, +55dBm IIP3 Typical, +85dBm IIP2 Typical, and Low Supply Current 1mA Typical.
TCA Applications:
Cellular, 3G Infrastructure
WiBro, WiMax, LTE
Microwave Radio
High-Linearity Level Control
For more information about RFMD's TCAs, please visit RFMD.com or call 336.678.5570. View the RFSA4013 and RFSA4023 here: https://estore.rfmd.com/RFMD_OnlineSt... AND https://estore.rfmd.com/RFMD_OnlineSt...