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©2008 by RF Monolithics, Inc.

RO3112C - 3/26/08

7

6

5

4

1

2

3

8

From 50

Ω

Network Analyzer

To 50

Ω

Network Analyzer

A

1

2

3

B

7

6

5

4

C

D 7

6

5

4

E

F

G

1

2

3

8

8

Case Dimensions

Dimension

mm

Inches

Min

Nom

Max

Min

Nom

Max

A

4.8

5.0

5.2

0.189

0.197

0.205

B

4.8

5.0

5.2

0.189

0.197

0.205

C

1.7

0.067

D

2.08

0.082

E

1.17

0.046

F

0.64

0.025

G

2.39

2.54

2.69

0.094

0.100

0.106

-80 -60 -40 -20

0 +20 +40 +60

0

-50

-100

-150

+80

-200

0

-50

-100

-150

-200

f

ΔT = T

0.05 pF*

0.05 pF

Cp

Co

+

=

*Case Parasitics

Cp

Rm

Lm

Cm

Equivalent LC Model

Temperature Characteristics

The curve shown on the right accounts for resonator contribution only and

does not include LC component temperature contributions.

Pin

Connection

1NC

2

Terminal

3NC

4NC

5NC

6

Terminal

7NC

8NC

Power Test

Electrical Connections

The SAW resonator is bidirectional and

may be installed with either orientation.

The two terminals are interchangeable

and unnumbered. The callout NC

indicates no internal connection. The NC

pads assist with mechanical positioning

and stability. External grounding of the NC

pads is recommended to help reduce

parasitic capacitance in the circuit.

Typical Test Circuit

Electrical Test

7

6

5

4

1

2

3

8

Low-Loss

Matching

Network to

50

Ω

50

Ω Source

at F

C

P

INCIDENT

P

REFLECTED

NC

NC

NC

NC

NC

NC

Typical Application Circuits

7

6

5

4

1

2

3

8

Modulation

Input

ROXXXXC

Bottom View

200k

Ω

C1

L1

(Antenna)

47

+9VDC

C2

RF Bypass

470

Typical Low-Power Transmitter Application

7

6

5

4

1

2

3

8

+VDC

ROXXXXC

Bottom View

200k

Ω

C1

L1

+VDC

C2

RF Bypass

Typical Local Oscillator Application

Output