RF2642PCBA41X Ver la hoja de datos (PDF) - RF Micro Devices

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RF2642PCBA41X

3V 900MHz UPCONVERTER/ DRIVER AMPLIFIER WITH BYPASS MODE

RF Micro Devices 

RF2642

Evaluation Board Schematic

(Download Bill of Materials from www.rfmd.com.)

NOTE:

1. R1, R2 and R8 are optional.

2. R4, R5 and R6 form T-attenuator with a loss of 1 dB.

For 0 dB loss, R4 and R6 are removed, and R5 is a 0 Ω short.

3. R3 and R7 are normally open.

4. FLT BP recommended is a Murata filter: SAFC836.5MC90T-TC12.

5. The microstrip on pin 4 is bridged to ground via 0 Ω 0402 size resistor.

The recommended setting is at maximum of PCB.

6. The microstrip on pin 3 is bridged to ground via 0 Ω resistor. The

recommended setting is at a distance of 35 mils from edge of device.

7. *DNI: Do Not Install

R8*

DNI

J1

PA OUT

VPA2

P1

1

2 GND

P1-3 3 PD

CON3

P2

P2-1 1 Gain Select

2 GND

P2-3 3 VCC

CON3

P3

P3-1 1 VPA1

2 GND

P3-3 3 VPA2

CON3

VPA1

J2

PA IN

50 Ω μstrip

L4

3.9 nH

C1

1 nF

C2

10 nF

See Note 6

L1

8.2 nH

R1*

DNI

μstrip

R9

0Ω

See Note 5

μstrip

R10

0Ω

C3

10 nF

C10 VCC

10 nF

Gain Select

C11

1 nF

50 Ω μstrip

J5

LO IN

C9

10 nF

C12

1 nF

1

16 15 14 13

Logic

2

Control

12

3

11

4

10

5

67

8

9

C7

1 nF

T1

TRANS6 50 Ω μstrip

C8

1 nF

2642400B

L2

8.2 nH

R2*

DNI

50 Ω μstrip

C5

10 nF

PD

C4

1 nF

R3*

DNI

R5

5.1 Ω

FL1

FLT BP

R4

820 Ω

R6

820 Ω

See Note 2

C6

1 nF

R7*

DNI

50 Ω μstrip

J4

IF IN

J3

MIX OUT

6-54

Rev A8 060925

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