MRFIC2001

6

MOTOROLA RF DEVICE DATA

Matching the LO port to 50 ohms can be done several

ways. The recommended approach is a series inductor as

close to the IC as possible. The inductor value is small

enough (~8 –15 nH depending on LO frequency) to be

printed on the board. A DC block is required and should not

be placed between the inductor and IC since this will prevent

the inductor from being close enough to the IC to provide a

good match.

The IF port is an open collector resulting in a very high out-

put impedance. For optimum linearity (IP3), the IF port

should be loaded with a 1000 ohm load-line. Since the output

requires a bias inductor and blocking capacitor, the IF filter

impedance can be transformed to 1000 ohms with these two

elements. If a low output VSWR is desired (to reduce IF filter

ripple), a 2.0 – 4.0 K ohm resistor can be placed in parallel

with the bias inductor. This will reduce the conversion gain by

1.0 – 2.0 dB.

The RF port is nearly 55 ohms resistive in series with a

small amount of capacitive reactance, which results in a

12–13 dB return loss. If a higher return loss is desired, a

3.0 – 4.0 nH series inductor printed on the board as close to

the IC as possible will improve it to over 20 dB. A DC block is

also required.

Supply decoupling must be done as close to the IC as pos-

sible. A 1000 pF capacitor is recommended. An additional

100 pF capacitor and an RF choke are recommended to

keep the LO signal off the supply line.

Enabling/Disabling the MRFIC2001 can be done with its

TTL/CMOS compatible Enable pin. The trip point is between

1.0 and 2.0 volts.

EVALUATION BOARDS

Evaluation boards are available for RF Monolithic Inte-

grated Circuits by adding a “TF” suffix to the device type.

For a complete list of currently available boards and ones

in development for newly introduced product, please con-

tact your local Motorola Distributor or Sales Office.

PACKAGE DIMENSIONS

CASE 751– 05

ISSUE S

SEATING

PLANE

1

4

5

8

A

h

q

C

X 45

_

L

DIM

MIN

MAX

MILLIMETERS

A

1.35

1.75

A1

0.10

0.25

B

0.35

0.49

C

0.18

0.25

D

4.80

5.00

E

1.27 BSC

e

3.80

4.00

H

5.80

6.20

h

0

7

L

0.40

1.25

q

0.25

0.50

_

_

NOTES:

1. DIMENSIONING AND TOLERANCING PER ASME

Y14.5M, 1994.

2. DIMENSIONS ARE IN MILLIMETERS.

3. DIMENSION D AND E DO NOT INCLUDE MOLD

PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.

5. DIMENSION B DOES NOT INCLUDE MOLD

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS

OF THE B DIMENSION AT MAXIMUM MATERIAL

CONDITION.

D

E

H

A

B

e

B

A1

C

A

0.10

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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola

data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”

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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that

Motorola was negligent regarding the design or manufacture of the part. Motorola and

are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal

Opportunity/Affirmative Action Employer.

Mfax is a trademark of Motorola, Inc.

How to reach us:

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Mfax

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MRFIC2001/D

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