JRC NJG1104KB2 Datasheet

NJG1104KB2

800MHz BAND LNA GaAs MMIC

NJG1104KB2

Note: The portion above shows orientation mark printed on the package surface.

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GENERAL DESCRIPTION nPACKAGE OUTLINE

NJG1104KB2 is a variable gain low noise amplifier (LNA).

At 800MHz band, noise figure is 1.2dB, variable gain range
is 21dB and input 3rd order intercept point is +6dBm. These
characteristics are very suitable for CDMA cellular phone
application.

The variable attenuators placed in front of LNA realize wide
range of input power with low distortion.

Very small and thin FLP6-B2 package is adopted.

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FEATURES

lLow voltage operation +2.8V typ.

lLow current consumption 6.0mA typ.
lHigh gain 15dB typ. @f=865MHz
lLow noise figure 1.2dB typ. @f=865MHz
lVariable gain control 21dB typ. @f=865MHz,V
lHigh input IP3 +6dBm typ. @f=865.0+865.1MHz, Pin=-30dBm
lHigh output IP3 +21dBm typ. @f=865.0+865.1MHz, Pin=-30dBm

lUltra small & ultra thin package FLP6-B2 (Mount Size: 2.1x2.0x0.75mm)

=0.2 to 1.7V

CONT

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PIN CONFIGURATION

KB2 Type

(Top View)

4

3

Pin Connection

1.SOURCE

AMP

5

2

2.GND

3.RFout

4.GND

ATT

6

5.VCONT

6.RFin

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NJG1104KB2

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ABSOLUTE MAXIMUM RATINGS

( Ta=25°C, Zs=Zl=50Ω )

PARAMETER SYMBOL CONDITIONS RATINGS UNITS
Drain Voltage V
Gain Control Voltage V

CONT

Input Power P
Power Dissipation P
Operating Temperature T
Storage Temperature T

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ELECTRICAL CHARACTERISTICS

DD

opr
stg

in
D

VDD=2.8V +20 dBm

(VDD =2.8V, V

=1.7V, f=865MHz, Ta=25°C, Zs=Zl=50Ω )

CONT

6.0 V

4.0 V

450 mW

-40~+85 °C

-55~+125 °C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Frequency freq 830 865 900 MHz
Drain Voltage V
Gain Control Voltage V
Operating Current I
Gain Control Terminal

Current

I

DD

CONT

DD

CONT

No RF Signal - 6.0 7.5 mA
No RF Signal - 1.0 5.0 uA

2.7 2.8 5.5 V

0.2 1.7 3.0 V

Small Signal Gain Gain 13.0 15.0 17.0 dB
Gain Flatness G
Gain Control Range G

flat

CONT

f=830~900MHz
V

=0.2V, 1.7V 18.5 20.5 22.5 dB

CONT

- 0.5 1.0 dB

Noise Figure NF - 1.20 1.40 dB
Pout at 1dB Gain

Compression point
Output 3rd Order

Intercept Point
Input 3rd Order

Intercept Point 1
Input 3rd Order

Intercept Point 2
RF Input Port VSWR VSWR

RF Output Port VSWR VSWR

P

-1dB

OIP3

IIP3-1

IIP3-2

f=865.0+865.1MHz
Pin=-30dBm

f=865.0+865.1MHz
Pin=-30dBm

f=865.0+865.1MHz
Pin=-10dBm
V

=0.2V

CONT

i

o

- +8.0 - dBm

+19.0 +21.0 - dBm

+4.0 +6.0 - dBm

+21.0 +26.0 - dBm

- 1.5 2.0 -

- 1.5 2.0 -

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NJG1104KB2

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TERMINAL INFORMATION

Pin Function Description

This terminal is internally connected to FET’s source of LNA. Please connect self-

1 SOURCE

2, 4 GND

3 RFout

bias resistor (R1) and bypass capacitor (C3) through source inductor (L5). NF and
IIP3 are tunable by C3 and L5.

Ground (0V) terminal. Ground plane should be placed as close to the ground
terminals. .

RF output and drain voltage supplies terminal. External matching circuit is
required.

5 VCONT

6 RFin

Gain control voltage (V

RF input terminal. External matching circuit and DC blocking capacitor are required.

) supplies terminal.

CONT

NJG1104KB2

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TYPICAL CHARACTERISTICS

NF,Gain vs. frequency

4.0

3.5

3.0

2.5

2.0

NF (dB)

1.5

1.0

0.5

0.0
700 750 800 850 900 950 1000

Gain

NF

(VDD=2.8V,V

frequency (MHz)

=1.7V,IDD=6mA)

CONT

Pout,Gain vs. Pin

15

10

5

0

Pout (dBm)

-5

-10

(VDD=2.8V,V

P-1dB=7.7dBm

Gain

Pout

=1.7V,f=865MHz)

CONT

18

17

16

15

14

13

12

11

10

20

15

10

Gain (dB)

Gain (dB)

NF,Gain vs. frequency

20

18

16

NF (dB)

14

12

10

700 750 800 850 900 950 1000

(VDD=2.8V,V

NF

Gain

frequency (MHz)

=0.2V,IDD=6mA)

CONT

Pout,Gain vs. Pin

(VDD=2.8V,V

10

0

Gain

-10

Pout (dBm)

-20

Pout

-30

=0.2V,f=865MHz)

CONT

0

-2

-4

-6

-8

-10

0

-5

-10

-15

-20

Gain (dB)

Gain (dB)

-15

-40 -30 -20 -10 0 10

Pin (dBm)

5

-40

-30 -20 -10 0 10
Pin (dBm)

-25

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