NJG1146KG1
WIDE BAND LOW NOISE AMPLIFIER GaAs MMIC
I
GENERAL DESCRIPTION
The NJG1146KG1 is a fully matched wide band low noise
amplifier GaAs MMIC for terrestrial application.
To achieve wide dynamic range, the NJG1146KG1 offers
high gain mode and low gain mode. Selecting high gain mode
for weak signals, the NJG1146KG1 helps improve receiver
sensitivity through high gain and low noise figure.
Selecting low gain mode for strong signals, it bypasses LNA
circuit to offer higher linearity.
An small and ultra-thin package of ESON6-G1 is adopted.
I
APPLICATIONS
Terrestrial application from 40MHz to 900MHz
Digital TV, Set-top box and Broadband CATV applications
I
FEATURES
G
Operating frequency
G
Operating voltage
G
Package size
[High gain mode]
G
Operating current
G
Gain
G
Noise figure
G
IM2
G
IM3
[Low gain mode]
G
Low current consumption
G
Gain(Low loss)
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PIN CONFIGURATION
(Top View)
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PACKAGE OUTLINE
NJG1146KG1
40MHz~900MHz
5.0V typ.
ESON6-G1 (Package size: 1.6mm x 1.6mm x 0.397mm typ.)
60mA typ.
12.0dB typ.
2.2dB typ.
52.0dB typ.
80.0dB typ.
30µA typ.
-1.0dB typ.
4
RFIN
3
RFOUT2
5
GND
Bias
circuit
2
NC
(GND)
1
RFOUT1
6
VCTL
Logic
circuit
Pin Connection
1. RFOUT1
2. NC(GND)
3. RFOUT2
4. RFIN
5. GND
6. VCTL
*Exposed PAD: GND
1pin INDEX
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TRUTH TABLE
V
CTL
H
L
“H”=V
CTL(H)
“L”=V
CTL(L)
LNA ON
ON
OFF
Bypass
OFF
ON
LNA mode
High Gain mode
Low Gain mode
Note: Specifications and description listed in this datasheet are subject to change without notice.
Ver.2013-04-17
-1-
NJG1146KG1
I
ABSOLUTE MAXIMUM RATINGS
T
a
=+25°C, Z
s
=Z
l
=50 ohm
PARAMETER
Drain voltage
Control voltage
Input power
Power dissipation
Operating temperature
Storage temperature
SYMBOL
V
DD
V
CTL
P
IN
P
D
T
opr
T
stg
V
DD
=5.0V
4-layer FR4 PCB with through-hole
(101.5x114.5mm), T
j
=150°C
CONDITIONS
RATINGS
6.0
6.0
+10
1200
-40~+85
-55~+150
UNITS
V
V
dBm
mW
°C
°C
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ELECTRICAL CHARACTERISTICS1
(DC CHARACTERISTICS)
V
DD
=5.0V, T
a
=+25°C, with application circuit
PARAMETERS
SYMBOL
V
DD
V
CTL(H)
V
CTL(L)
I
DD
1
I
DD
2
I
CTL
RF OFF, V
CTL
=1.8V
RF OFF, V
CTL
=0V
RF OFF, V
CTL
=1.8V
CONDITIONS
MIN
2.4
1.3
0.0
-
-
-
TYP
5.0
1.8
0.0
60
30
6
MAX
5.5
5.5
0.5
80
50
12
UNITS
V
V
V
mA
Operating voltage
Control voltage (High)
Control voltage (Low)
Operating current1
Operating current2
Control current
µ
A
µ
A
-2-
NJG1146KG1
I
ELECTRICAL CHARACTERISTICS2
(High Gain mode)
V
DD
=5.0V, V
CTL
=1.8V, freq=40~900MHz, T
a
=+25°C, Z
S
=Z
l
=50 ohm, with application circuit
PARAMETERS
Small signal gain1
Noise figure1_1
SYMBOL
Gain1
NF1_1
CONDITIONS
Exclude PCB
& connector losses
*1
freq=40~80MHz,
Exclude PCB
& connector losses
*2
freq=80~900MHz,
Exclude PCB
& connector losses
*2
MIN
9.0
-
TYP
12.0
2.5
MAX
14.0
4.0
UNITS
dB
dB
Noise figure1_2
Input power
at 1dB gain
compression point1
Input 3rd order
intercept point1
2nd order
intermodulation
distortion1
3rd order
intermodulation
distortion1
Isolation
RF IN Return loss1
RF OUT Return loss1
NF1_2
-
2.2
3.0
dB
P
-1dB(IN)
1
IIP3_1
IM2_1
f1=freq, f2=freq+100kHz,
P
IN
=-12dBm
f1=200MHz, f2=500MHz,
fmeas=700MHz,
P
IN
1=P
IN
2=-15dBm *3
f1=600MHz, f2=650MHz,
fmeas=700MHz,
P
IN
1=P
IN
2=-15dBm *3
S12
+0.0
+16.0
42.0
+6.0
+22.0
52.0
-
-
-
dBm
dBm
dB
IM3_1
ISL1
RLi1
RLo1
55.0
-
7.0
7.0
80.0
-17.0
10.0
10.0
-
-13.0
-
-
dB
dB
dB
dB
*1 Input & output PCB and connector losses: 0.014dB(40MHz), 0.088dB(620MHz), 0.121dB(900MHz)
*2 Input PCB and connector losses: 0.007dB(40MHz), 0.011dB(80MHz), 0.044dB(620MHz), 0.060dB(900MHz)
*3 Definitions of IM2 and IM3.
Pout(dBm)
Pout(dBm)
IM2
IM3
200
500
700
600/650
700
frequency(MHz)
frequency(MHz)
-3-
NJG1146KG1
I
ELECTRICAL CHARACTERISTICS3
(High Gain mode)
V
DD
=5.0V, V
CTL
=1.8V, freq=40~900MHz, T
a
=+25°C, Z
S
=Z
l
=75 ohm, with application circuit
PARAMETERS
Small signal gain75
Composite Second
Order
Composite Triple Beat
SYMBOL
Gain75
CSO
CONDITIONS
Exclude PCB
& connector losses
*1
74channels *4, CW
P
IN
=+15dBmV
fmeas=295.25MHz,
74channels *4, CW
P
IN
=+15dBmV
fmeas=295.25±1.25MHz,
74channels *4, Modulation
P
IN
=+15dBmV
fmeas=295.25±15.75kHz,
MIN
-
-
TYP
12.0
-56
MAX
-
-
UNITS
dB
dBc
CTB
-
-81
-
dBc
Cross Modulation
RF IN Return loss75
RF OUT Return loss75
XMOD
RLi75
RLo75
-
-
-
-80
15
15
-
-
-
dBc
dB
dB
*1 Input & output PCB and connector losses: 0.014dB(40MHz), 0.088dB(620MHz), 0.121dB(900MHz)
*4 74channels: ch1~C63(91.25~463.25MHz 6MHz step) and U13~U25(471.25~543.25MHz 6MHz step) except
ch7(189.25MHz) , C28(253.25MHz)
-4-
NJG1146KG1
I
ELECTRICAL CHARACTERISTICS4
(Low Gain mode)
V
DD
=5.0V, V
CTL
=0V, freq=40~900MHz, T
a
=+25°C, Z
S
=Z
l
=50 ohm, with application circuit
PARAMETERS
Small signal gain2
Input power at
1dB gain
compression point2
Input 3rd order
intercept point2
2nd order
intermodulation
distortion1
3rd order
intermodulation
distortion1
RF IN Return loss2
RF OUT Return loss2
SYMBOL
Gain2
P
-1dB(IN)
2
IIP3_2
IM2_2
f1=freq, f2=freq+100kHz,
P
IN
=-2dBm
f1=200MHz, f2=500MHz,
fmeas=700MHz,
P
IN
1=P
IN
2=0dBm *3
f1=600MHz, f2=650MHz,
fmeas=700MHz,
P
IN
1=P
IN
2=0dBm *3
CONDITIONS
Exclude PCB
& connector losses *1
MIN
-2.5
+10.0
+25.0
40.0
TYP
-1.0
+16.0
+33.0
60.0
MAX
-
-
-
-
UNITS
dB
dBm
dBm
dB
IM3_2
RLi2
RLo2
48.0
8.0
8.0
70.0
15.0
15.0
-
-
-
dB
dB
dB
*1 Input & output PCB and connector losses: 0.014dB(40MHz), 0.088dB(620MHz), 0.121dB(900MHz)
*3 Definitions of IM2 and IM3.
Pout(dBm)
Pout(dBm)
IM2
IM3
200
500
700
600/650
700
frequency(MHz)
frequency(MHz)
-5-
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