NJG1704V
800MHz BAND FRONT-END GaAs MMIC
nGENERAL
DESCRIPTION
NJG1704V is a front-end GaAs MMIC including
a LNA, local amplifier and MIXER, designed mainly
for 800MHz band cellular phone.
NJG1704V exhibits low noise of 1.7dB at low total
current consumption of 9.0mA.
nFEATURES
lLow
voltage operation
lLow
current consumption
lHigh
conversion gain
lLow
noise figure
lHigh
IIP3
lPackage
nPIN
CONFIGURATION
V TYPE
(Top View)
Pin Connection
1
2
3
4
5
10
9
8
7
6
1.LNAIN
2.LNACAP
3.GND
4.IFOUT
5.VLO
6.LOIN
7.GND
8.MIXIN
9.GND
10.LNAOUT
nPACKAGE
OUTLINE
NJG1704V
+2.7V typ.
9mA typ.
28dB typ. @f
RF
=820MHz, P
RF
=-50dBm, f
LO
=690MHz, P
LO
=-10dBm
1.7dB typ. @f
RF
=820MHz, f
LO
=690MHz, P
LO
=-10dBm
-14dBm typ. @f
RF
=820.0+820.1MHz, f
LO
=690MHz, P
LO
=-10dBm
SSOP10
-1-
NJG1704V
nABSOLLUTE
MAXIMUM RATINGS
PARAMETER
LNA Voltage
MIXER Voltage
LOCAL Amplifier Voltage
Input Power 1
Input Power 2
Power Dissipation
Operating Temperature
Storage Temperature
SYMBOL
CONDITIONS
V
LNA
V
MIX
V
LO
P
LNAIN
V
LNA
=V
MIX
=V
LO
=2.7V
P
LOIN
V
LNA
=V
MIX
=V
LO
=2.7V
P
D
T
opr
T
stg
(T
a
=+25°C, Z
s
=Z
l
=50Ω)
RATINGS
UNITS
5.0
V
5.0
V
5.0
V
+15
dBm
+10
dBm
320
mW
-40~+85
°C
-55~+125
°C
nELECTRICAL
CHARACTERISTICS
COMMON CONDITIONS: T
a
=+25°C, V
LNA
=V
MIX
=V
LO
=2.7V, f
RF
=820MHz, f
LO
=690MHz, P
RF
=-50dBm
P
LO
=-10dBm, Z
s
=Z
l
=50Ω, Application Circuit, f
LO
=690MHz
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Frequency
Freq
800
820
900
MHz
LNA Voltage
V
LNA
2.5
2.7
4.5
V
MIXER Voltage
V
MIX
2.5
2.7
4.5
V
LOCAL Amplifier Voltage
V
LO
2.5
2.7
4.5
V
LNA Current
I
LNA
P
RF
, P
LO
=OFF
-
3.0
4.5
mA
MIXER Current
I
MIX
P
RF
, P
LO
=OFF
-
5.0
6.7
mA
LOCAL Amplifier Current
I
LO
P
RF
, P
LO
=OFF
-
1.0
2.0
mA
Total Current
I
AL
P
RF
, P
LO
=OFF
-
9.0
13.2
mA
Conversion Gain
G
c
25.0
28.0
-
dB
30MHz bandwidth in
-
1.5
-
dB
Gain Flatness
G
flat
f
RF
=810~885MHz
Noise Figure
NF
-
1.7
2.0
dB
1dB Gain Compression
P-1dB
-1.0
+2.5
-
dBm
Output Power
Input 3rd Intercept Point
IIP3
f
RF
=820.0+820.1MHz
-19.0
-14.0
-
dBm
Image Suppression Level
RF IN VSWR
IMR
VSWR
i
-
-
-22.0
2.0
-18.0
3.0
dBc
-2-
NJG1704V
n
ELECTRICAL CHARACTERISTICS
(LNA)
COMMON CONDITIONS: T
a
=+25°C, V
LNA
=2.7V, V
MIX
=V
LO
=0V, f
RF
=820MHz, Z
s
=Z
l
=50Ω
Application Circuit, f
LO
=690MHz
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
Small Signal Gain
Gain
16.0
-
-
Noise Figure
NF
1.4
-
-
Input 3’rd Intercept Point
IIP3
f
RF
=820.0+820.1MHz
-3.0
-
-
2.0
RF IN VSWR
VSWR
i
-
-
RF OUT VSWR
VSWR
o
2.0
-
-
UNITS
dB
dB
dBm
n
ELECTRICAL CHARACTERISTICS
(MIXER)
COMMON CONDITIONS: T
a
=+25°C, V
LNA
=0V, V
MIX
=V
LO
=2.7V, f
RF
=820MHz, f
LO
=690MHz,
P
RF
=-30dBm, P
LO
=-10dBm, Z
s
=Z
l
=50Ω Application Circuit, f
LO
=690MHz
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
12.0
dB
Conversion Gain
G
c
-
-
Noise Figure
NF
5.0
dB
-
-
Input 3’rd Intercept Point
IIP3
f
RF
=820.0+820.1MHz
+2.0
dBm
-
-
-3-
NJG1704V
n
TERMINAL INFORMATION
No.
1
2
3
4
5
6
7
8
9
SYMBOL
LNAIN
LNACAP
GND
IFOUT
VLO
LOIN
GND
MIXIN
GND
DESCRIPTIONS
RF input terminal of LNA. The RF signal is input through external matching
circuit.
Terminal for the bypass capacitor of LNA. The bypass capacitor C1 shown in
application circuit, should be connected to this terminal as close as possible.
Ground terminal(0V)
IF signal output terminal. The IF signal is output though external matching
circuit’s connected to this terminal. Please connect inductance L8 and power
supply as application circuit since it is also the terminal of Mixer power supply.
Power supply terminal for local amplifier. Please connect R1 and L10 to this
terminal shown in the application circuit as close as possible.
Local signal input terminal of local amplifier. The local signal input to Local
Amplifier through external matching circuit.
Ground terminal(0V)
RF signal input terminal of Mixer. The RF signal from LNA is sent to Mixer
through matching circuit.
Ground terminal(0V)
Signal output terminal of LNA. The RF signal from LNA is output through external
matching circuit connected to this terminal. Please connect inductance L4 and
power supply shown in application circuit, since it is also the terminal of LNA
power supply.
10
LNAOUT
CAUTION
1) Ground terminal (No.3, 7, 9) should be connected to the ground plane as short as
possible.
-4-
NJG1704V
n
TYPICAL CHARACTERISTICS
(LNA+MIXER, f
LO
=690MHz)
Conversion Gain , Noise Figure
vs. RF Frequency
30
2
30
28
Conversion Gain , Noise Figure
vs. LO Power
4.5
Conversion Gain (dB)
Gc
Conversion Gain (dB)
28
1.9
Gc
4
3.5
3
2.5
Noise Figure (dB)
26
24
22
20
18
26
1.8
NF
24
1.7
NF
2
1.5
1
22
1.6
20
780
800
820
840
860
880
900
1.5
920
16
-40
-30
-20
-10
0
10
RF Frequency (MHz)
Condition
f
IF
=130MHz
P
RF
=-46dBm
P
LO
=-10dBm
V
LNA
=V
MIX
=V
LO
=2.7V
LO Power (dBm)
Condition
f
IF
=130MHz
f
RF
=820MHz, P
RF
=-46dBm
f
LO
=690MHz
V
LNA
=V
MIX
=V
LO
=2.7V
Output-IP3 , Input-IP3
vs. LO Power
15
-8
OIP3
10
-12
OIP3 (dBm)
IIP3
5
-16
0
-20
-5
-40
-24
-30
-20
-10
0
10
LO Power (dBm)
Condition
f
IF
=130MHz
f
RF1
=820.0MHz, P
RF
=-42dBm
f
RF2
=820.1MHz
f
LO
=690MHz
V
LNA
=V
MIX
=V
LO
=2.7V
OIP3=
3IF-IM3
2
3IF-IM3
IIP3=
-G
c
2
@P
RF
=-42dBm
IIP3 (dBm)
-5-
Noise Figure (dB)
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