4

RF Device Data

Freescale Semiconductor

MRF18090BR3 MRF18090BSR3

Figure 3. 1.93 - 1.99 GHz Demo Board Schematic

C2

V

Ground

C1

R2

R1

R4

R6

T1

R3

T2

C8

C10

C9

R5

C6

C7

C5

C4

C3

SUPPLY

MRF18090B

C5

C3

C1

R1

R2

R6

T1

R3

R4

Z3

T1

T2

C7

Z2

RF

INPUT

RF

OUTPUT

Z1

C8

Z4

+

C1, C3

1 mF Chip Capacitors (0805)

C2

0.1 mF Chip Capacitor (0805)

C4

1 nF Chip Capacitor (0805)

C5

220 mF, 50 V Electrolytic Capacitor

C6, C7

8.2 pF, 100A Chip Capacitors

C8, C9, C10

22 pF, 100A Chip Capacitors

R1

10 Ω Chip Resistor (0805)

R2, R3

1 kΩ Chip Resistors (0805)

R4

2.2 kΩ Chip Resistor (0805)

R5

10 kΩ Chip Resistor (0603)

R6

5 kΩ, SMD Potentiometer

T1

LP2951 Micro-8 Voltage Regulator

T2

BC847 SOT-23 NPN Transistor

Z1

0.491″ x 0.110″ Microstrip

Z2

0.756″ x 1.260″ Microstrip

Z3

1.433″ x 1.260″ Microstrip

Z4

0.567″ x 0.110″ Microstrip

R5

C2

C4

C6

C10

C9

Figure 4. 1.93 - 1.99 GHz Demo Board Component Layout

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.