NJG1707PG1 is a front-end IC for a digital cellular phone of
800MHz band. A 2x6 antenna switches and a low noise
amplifier are included.
The parallel control signals of three bits logic connect T/R
circuits to internal two antennas or external two antennas. The
termination ports with external matching circuits make low
interference between diversity antennas.
The ultra small & thin FFP32-G1 package is adopted.
nFEATURES
•Ultra small & thin packageFFP32-G1 (Mount Size: 4.5x4.5x0.85mm)
•Antenna SwitchlLow voltage operation-2.5V (Tx only) and +3.5VlLow current consumption10uA typ. (Tx Mode, P
=30dBm), 2uA typ. (Rx Mode, Pin=10dBm)
in
lLow insertion loss0.5dB typ. @(Tx-ANT1, Tx-EXT1) f
Tested on PCB circuit as shown below.
Insertion loss of each connectors, striplines, and capacitors are excluded.
TX, RX, ANT1, ANT2, EXT1, EXT2: terminated (50Ω)
TER1, TER2: grounded by 10pF capacitor.
VSWR 1VSWR1Tx-ANT1, Tx-EXT1 passing-1.21.5
Switching Time 1TD1CTL1~3-120500nsec
NJG1707PG1
n
Ta=25°C, VDD=3.5V, VSS=0V, fin=810~885MHz
Ta=25°C, VDD=3.5V, VSS=0V, fin=820MHz
ELECTRICAL CHARACTRISTICS 3 [Rx Mode]
General Conditions:
Tested on PCB circuit as shown below.
Insertion loss of each connectors, striplines, and capacitors are excluded.
TX, RX, ANT1, ANT2, EXT1, EXT2: terminated (50Ω)
TER1, TER2: grounded by 10pF capacitor.
28LNAINLNA input terminal. An external matching circuit is required.
30LNAOUT
31EXTCAP
1,2,3,8,10,
12,14,16,1
8,20,22,24,
29,32
SS
DD
GND
Control signal input terminal of high impedance C-MOS logic. Logic level: High; more
than +2V, Low; 0~+0.6V. Please connect to GND or VDD with 100kΩ if potential is
open or uncertain.
Negative supply terminal. Negative voltage of -3.5~-2.0V must be supplied on Tx
mode. This terminal is isolated on Rx mode, so open or –2.5~0V condition can be
used. Please connect bypass capacitor with GND to keep RF performance.
Positive supply terminal. The voltage of this terminal should be supplied before or
same time with other DC supplying terminals (CTL1~3, VSS). The bias voltage should
be +2.7~+5.0V. Please connect bypass capacitor with GND to keep RF performance.
RF port for Rx signal. A DC cut capacitor (56pF~100pF) is required to block V
voltage.
RF port for Tx/Rx signal. A DC cut capacitor (56pF~100pF) is required to block V
voltage.
Tx power input terminal. A DC cut capacitor is required to block VDD voltage, and also
an external matching circuit is required to improve VSWR(See Application circuit).
A termination terminal for ANT1 in case ANT2 is in use. The influence of ANT1
against ANT2 is reduced. A DC cut capacitor (10pF) is required to block VDD voltage.
RF port for Tx/Rx signal. A DC cut capacitor (56pF~100pF) is required to block V
voltage.
Rx output terminal. A DC cut capacitor is required to block VDD voltage, and also an
external matching circuit is required to improve VSWR(See Application circuit).
RF port for Rx signal. A DC cut capacitor (56pF~100pF) is required to block V
voltage.
A termination terminal for ANT2 in case ANT1 is in use. The influence of ANT2
against ANT1 is reduced. A DC cut capacitor (10pF) is required to block VDD voltage.
Ground terminal of LNA. Please place ground plane close to this pin for good RF
performance.
LNA output terminal. An external matching circuit with LNA biasing element L3, L4 as
in application circuit is required.
Bypass capacitor terminal of LNA. Please place C9 as in application circuit close to
this terminal.
Ground terminal. Please connect to ground plane as close as possible for good RF
performance.