NOTE: Please note that any information on this catalog will be subject to change.
NOTE: Theportion above shows orientation mark printed on the package surface.
1
2
KB2 Type
TENTATIVE
800MHz BAND MIXER GaAs MMIC
n
GENERAL DESCRIPTION
NJG1555KB2 is a mixer GaAs MMIC features low
distortion, high conversion gain and low noise figure.
NJG1555KB2 includes a mixer and a local amplifier,
and ideally suitable for 800MHz band digital mobile
phone handsets.
An ultra small & ultra thin FLP6-B2 package is adopted.
3RFINRF input terminal of mixer. External matching circuit is required.
4IFOUT
5BPC
6VLO
NOTE:
1) Ground terminal (2pin) should be connected with ground plane by multiple via holes
for good grounding.
Local power input terminal of local amplifier.
External matching circuit is required.
IF signal output terminal for mixer external matching circuit is required.
Please connect mixer power supply through choke inductor (L6) as shown in
test circuit.
Optional bypass capacitor terminal for mixer.
Please connect optimum capacitor if need for tuning Gc or IP3.
Local amplifier supply terminal.
Please place R1 & L4 close to this terminal as shown in test circuit.
- 3 -
Page 4
NJG1555KB2
n
V
=V
=2.7V
TYPICAL CHARACTERISTICS (fLO=690MHz)
Conversion Gain , Noise Figure
vs. LO Power
14
12
10
8
6
Conversion Gain (dB)
4
2
-40-30-20-10010
Gc
NF
LO Power (dBm)
Condition
fIF=130MHz
fRF=820MHz, PRF=-30dBm
fLO=690MHz
V
[1] Please locate L4 and R1 close to VLO terminal (6).
[2] Please locate C1 and C2 close to L4.
[3] Please locate C5 and C6 close to C3.
PCB (FR-4):
t=0.2mm
STRIP LINE WIDTH
=0.4mm (Z0=50Ω)
PCB SIZE
=16.7x19.1mm
RF IN
L2
- 9 -
Page 10
NJG1555KB2
n
PCB
Power
Noise
6dB
MEASURING BLOCK DIAGRAM
SG
(LOCAL)
SG
(RF)
LOCAL IN
D.U.T.
RF IN
V
MIX=VLO
=2.7V
IF OUT
Conversion Gain Measuring Block Diagram
V
MIX=VLO
BPF
SG
(LOCAL)
D.U.T.
PCB
IF OUT
Spectrum
Analyzer
=2.7V
NF Meter
LOCAL IN
RF IN
ATT
BPF
Noise Figure Measuring Block Diagram
SG
(LOCAL)
SG
(RF1)
SG
(RF2)
LOCAL IN
Comb.
V
D.U.T.
PCB
RF IN
ATT
MIX=VLO
IF OUT
=2.7V
Source
Spectrum
Analyzer
- 10 -
OIP3, IIP3 Measuring Block Diagram
Page 11
NJG1555KB2
nPACKAGE OUTLINE (FLP6-B2)
care to avoid these damages.
2.0±0.1
654
123
0.650.65
+0.1
0.2-0.05
0.75±0.05
0.20.2
2.1±0.1
1.7±0.1
+0.1
0.15-0.05
Lead material: Copper
Lead surface finish: Solder plating
Molding material: Epoxy resin
0.10.1
Unit: mm
Weight: 6.5mg
Cautions on using this product
This product contains Gallium-Arsenide (GaAs) which is a harmful material.
• Do NOT eat or put into mouth.
• Do NOT dispose in fire or break up this product.
• Do NOT chemically make gas or powder with this product.
• To waste this product, please obey the relating law of your country.
This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 11 -
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