MRF21090R3 MRF21090SR3

3

RF Device Data

Freescale Semiconductor

Figure 1. MRF21090R3(SR3) Test Circuit Schematic

B1

Ferrite Bead, Fair Rite #2743019447

C1, C13

470 μF, 50 V Electrolytic Capacitors

C2, C10

22 μF, 35 V Tantalum Surface Mount Chip

Capacitors, Kemet

C3, C9

20 nF Chip Capacitors, ATC #100B203MCA500X

C4, C8

5.1 pF Chip Capacitors, ATC #100B5R1CCA500X

C5, C12

0.4 - 2.5 pF Variable Capacitors, Johanson Gigatrim

C6

10 pF Chip Capacitor, ATC #100B100JCA500X

C7

1 mF, 35 V Tantalum Surface Mount Chip Capacitor,

Kemet

C11

1 nF Chip Capacitor, ATC #100B102JCA500X

C14

8.2 pF Chip Capacitor, ATC #100B8R2CCA500X

R1

13 Ω, 1/4 W Chip Resistor,

Garret Instrument #RM73B2B130JT,

R2

12 Ω, 1/4 W Chip Resistor,

Garret Instrument #RM73B2B120JT

Z1

30.7 x 2.09 mm Microstrip

Z2

5.99 x 2.09 mm Microstrip

Z3

7.55 x 9.89 mm Microstrip

Z4

3.77 x 15.71 mm Microstrip

Z5

6.89 x 26.17 mm Microstrip

Z6

14.93 x 32.05 mm Microstrip

V

V

RF INPUT

RF OUTPUT

R1

Z1

Z2

Z3

Z4

Z5

Z6

Z7

Z8

Z9

Z10

Z11

C7

C8

C9

C10

C11

C12

C14

C13

C6

R2

B1

DUT

C5

C1

C2

C3

C4

GG

DD

Z7

10.23 x 2.09 mm Microstrip

Z8

6.03 x 2.09 mm Microstrip

Z9

23.98 x 2.09 mm Microstrip

Z10

29.82 x 1.15 mm Microstrip

Z11

17.08 x 1.15 mm Microstrip

WS1, WS2

Beryllium Copper Wear Blocks 5 mils Thick

Brass Banana Jack and Nut

Red Banana Jack and Nut

Green Banana Jack and Nut

Type N Jack Connectors, 3052-1648-10,

Omni Specra

4-40 Head Screws 0.125″ Long

4-40 Head Screws 0.188″ Long

4-40 Head Screws 0.312″ Long

4-40 Head Screws 0.438″ Long

Endplates Brass Endplates for Copper Bedstead

Bedstead

Copper Bedstead/Heatsink

Insert

Copper Bedstead Insert

Raw PCB

3″ x 5″ Arion

RF Circuit

MRF21090, CMR

+

+

+

++

Figure 2. MRF21090R3(SR3) Test Circuit Component Layout

C

U

T

O

U

T

Drain

Feed

C1

C2

C3 C4

C6

C5

C7 C8

C9

C10

C11

C12

C14

B1

R2

R1

C13

Bias

Gate

Feed

Bias

MRF21090

Freescale has begun the transition of marking Printed Circuit Boards (PCBs) with the Freescale

Semiconductor signature/logo. PCBs may have either Motorola or Freescale markings during the

transition period. These changes will have no impact on form, fit or function of the current product.