New Japan Radio Co., Ltd. formally announces X-SPDT*1 Switch for balanced signals*2(Henceforth X-SPDT) NJG1662MD7, which is suitable for switch of balance signal using in a cellular phone and data communication card.
In a receiving circuits block for a cellular phone, received signals past through antenna are shifted to balanced signals*2 in switching of balanced dual band filter*3 and output and handled in RF-IC*4. The balanced signals from switching of balanced dual band are output at a pair of signal lines, so a switch for the balanced signals which is ease to shift a pair of signal lines are required in case of terminals with 2-bands. New Japan Radio Co., Ltd developed NJG1642HE3 (released on Mar. 27th in 2006) to be ease to shift the balanced signals. The NJG1662MD7 takes over the NJG1642HE3 characteristics and EQFN14-D7 package is smaller than the one of NJG1642HE3.
The NJG1662MD7 consists of 2 circuits of SPDT switches and logic circuits and synchronizes 2 circuits of built-in SPDT by a logic circuit and makes the 2 lines of balanced signal switched.
Compared with the size of NJG1642HE3, NJG1662MD7 adopts EQFN14-D7, which is around 54% of smaller in surface ratio and around 50% of lower in height ration and realizes small-footprint of PCB. Additionally, it does not include lead and halogen so contributes to reduce the environmental burden.
Moreover, no external phase compensation is required due to a feature of low phase error between balanced signals within ±3deg. And The NJG1662MD7 contributes the alleviation of burdens for PCB design due to X-Style*5 switch, which makes external signal lines not cross on a PCB (Printed Circuit Board).
The NJG1662MD7, which has the specification of phase error between balanced signals within ±3deg(max.) and is X-Style*5 switch, contributes miniaturization of PCB and alleviation of burdens for designers. The NJG1662MD7 is suitable for switches for the balanced signals of a cellular phone and a data communication card.The NJG1662MD7 features;
|Function||X-SPDT Switch for balanced signals|
|Applications||Cellular Phone Data Communication Card|