ST’s integrated tunable capacitors offer excellent RF performance, low power consumption and high linearity required in adaptive RF tuning applications. The fundamental building block of a passive tunable integrated circuit (PTIC) is a tunable material called Parascan?, which is a version of barium strontium titanate (BST) developed by Paratek microwave.
ST’s Parascan? tunable integrated capacitors (STPTIC) are available with a typical capacitance from 1.5 to 8.2 pF and offer excellent RF performance, low power consumption and high linearity required in adaptive RF tuning applications. The STPTIC G series is optimized for impedance matching (standard linearity) while the STPTIC L series is optimized for frequency tuning (high linearity).
These tunable capacitors are controlled through an extended bias voltage ranging from 1 to 24 V. Over the bias range, the capacitance tuning ratio is 5 to 1.
Featured Videos
Smart Antenna Tuning with STMicroelectronics (all LTE bands)
Antenna desense medication with ECMF? common-mode filters integrating ESD protection
STHVDAC, STPTIC: better sensitivity and longer battery life
New RF tunable capacitors boost LTE smartphone performance
ST’s new range of BST (barium strontium titanate) tunable capacitors in a WLCSP package uses solder bars instead of bumps. In addition to increasing the chip’s mechanical strength when soldered on thin printed circuit boards, the 3-solder bar package is smaller than a 4-bump device, making this new C4 series of Parascan? tunable integrated capacitors (STPTIC) even more suited for high-volume manufacturing.
There are currently three RF tunable capacitors with solder bars: STPTIC-15C4 and STPTIC-27C4 are high-linearity devices used in frequency-tuning applications and the STPTIC-82C4 with standard linearity is best suited for impedance matching. A common land pattern can be used in order to support passive tunable integrated circuit (PTIC) values ranging from 1.5 to 8.2 pF.
-
STPTIC-27C4
Parascan? tunable integrated capacitor
-
STPTIC-82G2
8p2 Tunable capacitor
-
STPTIC-27L2
Parascan? tunable integrated capacitor
-
STPTIC-15G2
1p5 Tunable capacitor
-
STPTIC-82C4
Parascan? tunable integrated capacitor
-
STPTIC-27G2
2p7 Tunable capacitor
-
STPTIC-15C4
Parascan? tunable integrated capacitor
-
STPTIC-39G2
3p9 Tunable capacitor
-
STPTIC-68G2
6p8 Tunable capacitor
