Datasheet NJG1557KB2 Datasheet (JRC)

NJG1557KB2

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800MHz BAND MIXER GaAs MMIC

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GENERAL DESCRIPTION

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PACKAGE OUTLINE

NJG1557KB2 is a GaAs MMIC MIXER IC with built-in

local amplifier for 800MHz cellular phone handsets.

This mixer features very high input IP3, high conversion gain and low noise figure, and suitable for the application which needs high input IP3 such as CDMA.

An ultra small & ultra thin FLP6-B2 package is adopted.

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FEATURES

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Low voltage operation +2.8V typ.

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Low current consumption 8.7mA typ.

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High input IP3 +8dBm typ. @fRF=850.0+850.1MHz, PRF=-25dBm

fLO=740MHz, PLO=-10dBm

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High conversion gain 9.5dB typ. @fRF=850MHz, PRF=-25dBm

fLO=740MHz, PLO=-10dBm, fIF=110MHz

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Low noise figure 5.5dB typ. @fRF=850MHz

fLO=740MHz, PLO=-10dBm, fIF=110MHz

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

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PIN CONFIGURATION

NJG1557KB2

KB2 Type

(Top View)

1

2

3

5

4

6

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

Pin Connection

1. LOIN

2. GND

3. RFIN

4. IFOUT

5. SOURCE

6. VLO

NOTE: Please note that any information on this catalog will be subject to change.

NJG1557KB2

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ABSOLUTE MAXIMUM RATINGS

(Ta=+25°C, Zs=Zl=50Ω)

PARAMETER SYMBOL CONDITIONS RATINGS UNITS

Mixer Supply Voltage V

MIX

6.0 V

Local Amp. Supply Voltage V

LO

6.0 V

Mixer RF Input Power P

RFIN

V

MIX=VLO

=2.8V +10 dBm

Mixer LO Input Power P

LOIN

V

MIX=VLO

=2.8V +10 dBm

Power Dissipation P

D

450 mW

Operating Temperature T

opr

-40~+85 °C

Storage Temperature T

stg

-55~+125 °C

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RECOMMENDED OPERATING RANGE

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Mixer V

MIX

2.7 2.8 5.5 V

Supply Voltage Local Amp. V

LO

2.7 2.8 5.5 V

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ELECTRICAL CHARACTERISTICS [DC CHARACTERISTICS]

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Total Operating Current I

TOTAL

I

MIX+ILO

- 8.7 10.6 mA

Mixer Current I

MIX

PRF=OFF, PLO=OFF - 7.5 9.3 mA

Local Amp. Current I

LO

PRF=OFF, PLO=OFF - 1.2 1.6 mA

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ELECTRICAL CHARACTERISTICS [AC CHARACTERISTICS]

(V

MIX=VLO

=2.8V, fRF=850MHz, fLO=740MHz, fIF=110MHz, PRF=-25dBm, PLO=-10dBm, Ta=+25°C,

Zs=ZI=50Ω, Measuring Test Circuit)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating RF Frequency f

RF

830 850 900 MHz

Conversion Gain Gc 8.5 9.5 - dB Input 3rd Order

Intercept Point

IIP3 fRF=850.0+850.1MHz +6.0 +8.0 - dBm

Noise Figure NF SSB - 5.5 6.5 dB LO to RF Isolation ISL PRF=OFF 2.0 7.0 - dB

NJG1557KB2

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TERMINAL EXPLANATION

PIN No. SYMBOL DESCRIPTIONS

1 LOIN

Local power input terminal of local amplifier. External matching circuit is required.

2 GND

Ground terminal (0V). Please place grounding VIAs as close as possible.

3 RFIN

RF signal input terminal of mixer. External matching circuit is required.

4 IFOUT

IF signal output terminal of mixer. External matching circuit is required. Please connect mixer power supply through inductor (L7,L8) as shown in test circuit. Please place bypass capacitor (C5) close to C4

5 SOURCE

Source terminal of mixer FET. Please connect source inductor (L6), bias resistor (R2) and bypass capacitor (C3) as shown in test circuit. These parts should be placed close to this terminal.

6 VLO

Local amplifier power supply terminal. Please place R1 and L5 close to this terminal as shown in test circuit, and place bypass capacitors (C1,C2) close to L5.

NJG1557KB2

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TYPICAL CHARACTERISTICS (fRF=830~870MHz, fIF=110MHz, Lower LOCAL)

5

6

7

8

9

10

11

4

5

6

7

8

9

10

830 835 840 845 850 855 860 865 870

Conversion Gain,NF vs. RF frequency

Conversion Gain(dB)

NF(dB)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,fIF=110MHz,

PRF=-25dBm,PLO=-10dBm

Conversion Gain

NF

4

6

8

10

12

14

16

18

20

830 835 840 845 850 855 860 865 870

OIP3,IIP3 vs. RF frequency

OIP3,IIP3(dBm)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,

fIF=110MHz,PRF=-25dBm,PLO=-10dBm

OIP3

IIP3

2

3

4

5

6

7

8

9

10

11

4

5

6

7

8

9

10

11

12

13

-40 -35 -30 -25 -20 -15 -10 -5 0 5

Conversion Gain,NF vs. LO Power

Conversion Gain(dB)

NF(dB)

LO Power(dBm)

V

MIX=VLO

=2.8V,fRF=850MHz,fLO=740MHz,

fIF=110MHz,PRF=-25dBm

Conversion Gain

NF

0

2

4

6

8

10

12

14

16

18

20

-40 -35 -30 -25 -20 -15 -10 -5 0 5

OIP3,IIP3 vs. LO Power

OIP3,IIP3(dBm)

LO Power(dBm)

V

MIX=VLO

=2.8V,fRF=850.0+850.1MHz,

fLO=740MHz,fIF=110MHz,PRF=-25dBm

OIP3

IIP3

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10

20

-40 -35 -30 -25 -20 -15 -10 -5 0 5 10

IF,IM3 vs. RF Power

IF,IM3(dBm)

RF Power(dBm)

IF

IM3

V

MIX=VLO

=2.8V,fRF=850.0+850.1MHz,

fLO=740MHz,fIF=110MHz,PLO=-10dBm

OIP3=+17.8dBm IIP3=+8.0dBm

0

5

10

15

20

25

30

35

40

45

720 725 730 735 740 745 750 755 760

Isolation vs. LO frequency

Isolation(dB)

LO frequency(MHz)

LO to IF Isolation

LO to RF Isolation

V

MIX=VLO

=2.8V,PLO=-10dBm

NJG1557KB2

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TYPICAL CHARACTERISTICS (fRF=830~870MHz, fIF=110MHz, Lower LOCAL)

RFIN port Impedance LOIN port Impedance

IFOUT port Impedance

NJG1557KB2

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TYPICAL CHARACTERISTICS (fRF=830~870MHz, fIF=110MHz, Lower LOCAL)

Q The values of OIP3 and IIP3 shown in typical characteristics are calculated from equation (1), (2)

Equations of OIP3 and IIP3 OIP3=(3xIF-IM3)/2 (1)

IIP3=OIP3-Gc (2) IF: IF Power (dBm)

IM3: IM3 Power (dBm) Gc: Conversion Gain (dB)

@PRF=-25dBm

2

3

4

5

6

7

8

9

10

11

12

830 835 840 845 850 855 860 865 870

Conversion Gain vs. RF frequnecy

-40oC

-20oC 0oC

+25oC +55oC +85oC

Conversion Gain(dB)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,fIF=110MHz,

PRF=-25dBm,PLO=-10dBm

1

2

3

4

5

6

7

8

830 835 840 845 850 855 860 865 870

NF vs. RF frequnecy

-40oC

-20oC 0oC

+25oC +55oC +85oC

NF(dB)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,

fIF=110MHz,PLO=-10dBm

10

11

12

13

14

15

16

17

18

19

20

830 835 840 845 850 855 860 865 870

OIP3 vs. RF frequnecy

-40oC

-20oC 0oC

+25oC +55oC +85oC

OIP3(dBm)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,fIF=110MHz,

PRF=-25dBm,PLO=-10dBm

0

1

2

3

4

5

6

7

8

9

10

830 835 840 845 850 855 860 865 870

IIP3 vs. RF frequnecy

-40oC

-20oC 0oC

+25oC +55oC +85oC

IIP3(dBm)

RF frequency(MHz)

V

MIX=VLO

=2.8V,Lower LOCAL,fIF=110MHz, PRF=-25dBm,PLO=-10dBm

NJG1557KB2

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TEST CIRCUIT

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RECOMMENNDED PCB DESIGN

PRECAUTIONS

[1] Please place R1 and L5 close to VLO terminal (6th pin). [2] Please place C1, C2 close to L5. [3] Please place C5 close to C4.

123

456

L1

L2

L3

L4

R1 L5

C1 C2

L6

R2

C3

L7

L8

C4

C5

C6

Local

Amp

Mixer

LOIN Zo=50Ω

Zo=50Ω RFIN

IFOUT

Zo=50Ω

V

LO

V

MIX

IFOUT

L1

L4

L2

L3

L5

R1

C2

C1

C3

R2

L6

C5

L7

L8

C4

C6

V

MIX

V

LO

LOIN

RFIN

PCB: FR4 t=0.2mm Microstrip Line Width=0.4mm(Zo=50Ω) PCB Size: 16.7x19.1mm

NJG1557KB2

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TABLE CHIP PARTS LIST

Lower LOCAL

Parts ID

fRF=850MHz fLO=740MHz

fIF=110MHz

REMARKS

L1 5.6nH TAIYO-YUDEN (HK1005) L2 12nH TAIYO-YUDEN (HK1005) L3 39nH TAIYO-YUDEN (HK1005) L4 22nH TAIYO-YUDEN (HK1005) L5 33nH TAIYO-YUDEN (HK1005) L6 1.0nH TAIYO-YUDEN (HK1005) L7 120nH TAIYO-YUDEN (HK1608)

L8 56nH TAIYO-YUDEN (HK1005) C1 100pF MURATA (GRM36) C2 1000pF MURATA (GRM36) C3 47pF MURATA (GRM36) C4 11pF MURATA (GRM36) C5 1000pF MURATA (GRM36) C6 1000pF MURATA (GRM36) R1 27Ω 1005 Size R2 82Ω 1005 Size

NJG1557KB2

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MEASURING BLOCK DIAGRAM

IF,IM3 Measuring Block Diagram

Noise Figure Measuring Block Diagram

Isolation Measuring Block Diagram

SG

(RF1)

SG

(RF2)

SG

(LO)

Power Comb.

6dB ATT

ISO.1

ISO.2

DUT

Spectrum Analyzer

RFIN

LOIN

IFOUT

V

MIX=VLO

=2.8V

SG

(LO)

BPF

6dB ATT

DUT

RFIN

LOIN

IFOUT

NF

Meter

Noise

Source

V

MIX=VLO

=2.8V

SG

(LO)

Spectrum Analyzer

50Ω

LOIN

DUT

IFOUT or RFIN

RFIN or IFOUT

V

MIX=VLO

=2.8V

NJG1557KB2

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nPACKAGE OUTLINE (FLP6-B2)

Lead material : Copper Lead surface finish : Solder plating Molding material : Epoxy resin 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

care to avoid these damages.

[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.

2.0±0.1

6 5 4

1 2 3

0.20.2

2.1±0.1

1.7±0.1

0.65 0.65

0.75±0.05 +0.1

0.2-0.05

+0.1

0.1 0.1

0.15-0.05

Datasheet NJG1557KB2 Datasheet (JRC)

Specifications and Main Features

Frequently Asked Questions

User Manual