Date: 23/09/2011
Power-efficient Ku-Band downconverters with conversion gain of 37 dB-45 Db
NXP Semiconductors N.V. has introduced the TFF101xHN, a family of integrated downconverters for use in Low Noise Block (LNB) 10.7-GHz to 12.75-GHz Ku band satellite receiver systems that are designed for downlink signal reception for TV satellite dishes, and DVB-S compliant downconverters consume 50-percent less current (52 mA) than other integrated solutions, significantly increasing the lifetime of the LNB and improving its reliability. The new downconverters are the recent additions to NXP's leading portfolio for satellite LNB, including other discrete products such as oscillators, amplifiers and switches, to provide complete coverage for all LNB architectures.
NXP explains that the TFF101xHN family offers simplicity and integration in a leadless 16-pin package with a conversion gain ranging from 37 dB to 45 dB, offer integrated phase noise of 1.5 degrees RMS and a low noise figure of 7 dB and high level of integration guarantees the stability of the local oscillator (LO), which improves overall system reliability by eliminating LO drift over lifetime due to temperature changes.
Key features of TFF101xHN family include:
Ultra low current consumption with Icc = 52 mA
Small real estate on PCB with a package size: DHVQFN16 (2.5 x 3.5 x 0.85 mm), only 7 external components and no inductors necessary
Single supply domain of 5 V +/-10%
Requires low cost fundamental crystal of only one 25-MHz crystal
High P1dBo and linearity (PL1dBo = 6 dBm / 3OIPo = 15 dBm)
Multiple gain types available (36, 39, 42, 45 dB)
Flat gain over frequency (less than 2 dBpp)
Input & output matched
According to NXP, the TFF101xHN family comes in four fully RF-tested versions with pre-set LO frequencies, which reduces the need for manual adjustments on the production line, speeding up the manufacturing process and time to market, as well as lowering operating costs for satellite LNB makers because assembly is made easy due to the high integration level of functionality and minimum requirement for external components..
The Low Noise Block downconverter is the device at the front of a parabolic satellite dish antenna that receives the very low level microwave signal from the satellite, amplifies the signal and converts it to a lower frequency band in order to send it down the cable to the indoor receiver, defines NXP. The Ku band (Kurtz-under band) is primarily used for satellite communications, particularly for editing and broadcasting satellite television.
"The new TFF101xHN downconverters take advantage of our state-of-the-art QuBiC4 SiGe:C technology, offering more functionality in less space, with better performance and lower power consumption than other solutions," said Greg Baker, senior director and manager, RF small signal product line, NXP Semiconductors. "Our RF small signal portfolio based on QuBiC4 enables a wide range of applications from mobile platforms, personal navigation devices, software-defined radio and e-metering, to AESA radars, satellite DBS and VSAT, base stations, point-to-point radio links and WLAN, where high frequency and high integration levels are essential."
"After consultation with satellite LNB makers, we have developed an improved and fully integrated downconverter solution that reduces both power consumption and time to market," said Guido Bekkers, worldwide marketing manager, RF satellite products, NXP Semiconductors. "This level of integration isn't common in the LNB market, which is dominated by discrete solutions characterized by the chance of LO drift, something which our downconverters completely eliminate. Savings in assembly time also means that the TFF101xHN offers LNB makers a solution with a very low cost of ownership."
Availability: The TFF1015 and TFF1017 are available immediately via distributors. TFF1014 and TFF1018 will be available early October 2011.