LNAs GPS receiver hands over 0.8 decibels of noises
Maxim’s total mark products show MAX2657 and MAX2658 for the first time, the two poles is small, sip LNAs of the battery. The application that makes for GPS that is operated on 1, 575 MHz area can be designed, LNAs combines Maxim’s SiGe BiCMOS process technology and WLP technical skill. They have one and 0.8 decibels of ultralow noise figures, score from GaAs the easy as Phempt LNAs improve there aren’t GPS.
Compared with competitive solution, it is not two pieces of apparatus that consume less power, and compared with the situation except belt the competitive apparatus is refused in those high linear MAX2658 is more easy to take to offer. The apparatus mobile phone of the application suitable, smart phone, PNDs, GPS enables the apparatus of health to like the bicycle computer and see, with GPS receiver mould one.
The signal of GPS originated from low earth orbiter, and often receive in environment or position of the city in the place that interfere of the other signals with respect of nearby frequency weakly and difficultly. In addition, GPS receiver of the single chip of low cost of today uses CMOS technology, this does not always prevent the best receiving sensitiveness for LNAs front.
RF CMOS these receiver require outside LNA spare no effort, advance GPS signal but (increase the noise) In order to get the predicament and confirm a seat on the satellite signal. This extra LNA increases expenses and size. Meanwhile, manufacturers must enable and reduce to the minimum apparatus and spend, has not sacrificed the performance size. Manufacturers are requiring small, low cost, this is not so surprised, high-performance LNA that will exert a prominent influence between GPS road carried out or high-performance GPS road.
Users can expect because MAX2657 uses low 4 mA (typ) ,Longer battery life in their GPS finished operating and offering the electric current with apparatus. MAX2658 is that the high and linear performance which exceeds the competition only need to consume 7.7 mA. All kinds of times use, apparatus one logic reduced to have make, close way can offer with to less than nowadays 1µA.
It is as high-level as possible to guarantee, some that users will want received performance in the presence of blocking things notably while taking and except belt. To design to these, high and linear MAX2658 will be in the field more than other apparatus. Receive the signal of GPS under the other situations of blocking the thing, MAX2658 offer easy 6 dBm bring, probably and one IIP3 only 3.5 mA extra supply electric current except belt.
Size advantage
MAX2657 and MAX2658 use one space rescue 0.4 throw, require one only 1 mm? WLP of the space of board wraps up. It is WLP smaller by 20% than the current competition. Because need to finish only 3 available external components are designed for board level, these LNAs makes the total board area of the requirement reduce to minimumly.
There is advantage of this important extremely small packaging seriously of another one finally. The 2658 that is can of two apparatus little MAX2657/MAX put and approach this aerial deeply so. Before enlarging it to GPS receiver, this arranges to offer the best signal intensity.
MAX2657EWT +T and MAX2658EWT +T supply and operate from once 1.6 V to time. Appoint to expand the temperature range above +85°C in - 40°C, they are free in small 6 safety pins of WLP extremely. The price rises with 0.45 dollars (1, 000, cheat U.S.A.) At the beginning . MAX2657EVKIT and MAX2658EVKIT assess the bench level effectively. One EV pricing of tool 50 (whether every, cheat U.S.A.) .
