njg1672lk4 New Japan Radio Co.,Ltd, njg1672lk4 Datasheet - Page 13

• Manufacturer Part Number: njg1672lk4
• Description: Sp9t Antenna Switch Gaas Mmic
• Manufacturer: New Japan Radio Co.,Ltd

(GSM1800 RX)
(GSM1900 RX)
(GSM900 RX)
(GSM850 RX)
G_RX2
G_RX1
G_RX4
G_RX3
APPLICATION CIRCUIT (Top View)
PARTS LIST
Since all RF ports are biased at GND voltage, no DC cut capacitors
are required on all RF ports.
When the RF port of the adjacent component is DC biased and
connected with the RF port of NJG1672LK4, DC cut capacitor is
required.
GND
GND
* The inductor of 56nH is required on ANT port in order to enhance ESD robustness.
(0/1.8V)
VC1
number
Parts
L1*
C1
1
2
3
4
5
6
7
(GSM 1800/1900 TX)
G_TX2
(0/1.8V)
VC2
24
8
LPF2
(0/1.8V)
GND
VC3
23
DECODER
9
100pF
Value
56nH
(GSM 850/900 TX)
(0/1.8V)
VC4
22
10
G_TX1
GaAs Dice
LPF1
(0/1.8V)
GND
VC5
21
11
TAIYO-YUDEN(HK1005)
(0/1.8V)
MURATA(GRM15)
VC6
20
12
LPF3
56nH
L1
Notes
19
18
17
16
15
14
13
(2.7V)
VDD
ANT
GND
GND
GND
100pF
(LCR 1.9G
LCR_RX1
(LCR 2.0G
LCR_RX2
LCR_TX
C1
RX)
RX)
1. VC1
2. GND
3. G_RX1(GSM850 RX)
4. G_RX2(GSM900 RX)
5. G_RX3(GSM1800 RX)
6. G_RX4(GSM1900 RX)
7. GND
8. G_TX2(GSM1800/1900 TX)
9. GND
10. G_TX1(GSM850/900 TX)
11. GND
12. ANT
13. GND
14. LCR_TX(LCR 1.9G/2.0G TX)
15. GND
16. LCR_RX2(LCR 2.0G RX)
17. LCR_RX1(LCR 1.9G RX)
18. GND
19. VDD
20. VC6
21. VC5
22. VC4
23. VC3
24. VC2
PIN CONNECTION
NJG1672LK4
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