Micrel, Inc.

MICRF008

August 2008

9

M9999-080108

Test Circuit

SEL0

VSS

REFOSC

REFOSC

ANT

CAGC

VDD

CTH

DO

C4

Z5

C5

R2

R1

U1

MICRF008BM

+5V

+5V

DO

C3

Y1

ANT1

C6

C2

C1

J1

1

2

3

4

8

7

6

5

JP1

Z4

Z3

Z1

Z = ±jX

J2

Z2

1

Test Circuit and Application Information

The test circuit is based on the EVAL8 PCB Design.

Gerbers, the bill of material and complete schematic are

available at Micrel website:

(http://www.micrel.com/product-info/qwikradio.shtml).

EVAL8 provides the means for a complete evaluation of

the MICRF008YM. It is not intended as a final receiver

design. For final receiver applications, look for the RX8-x

series of reference designs. The board is a FR4

material, 0.062 inch thick, in two layers. It is strongly

recommended that all RF designs are made in a

minimum two-layer board, one side being as solid

ground as possible. Blank EVAL8 boards are available

for selected customers. To obtain a blank board contact

your

local

Micrel

representative/distributor.

Four

drawings are shown below, the top layer, bottom layer,

the top silkscreen layer, and the bottom silkscreen layer.

The size of the board is 0.910 x 0.760 inches. It provides

the means to test the part thoroughly.

Figure 7a. Top Layer

Figure 7b. Bottom Layer

Figure 7c. Top Silkscreen Layer

Figure 7d. Bottom Silkscreen Layer