MICRF008

Micrel

MICRF008

8

July 2003

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

MICRF008BM. 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 draw-

ings 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 7c. Top Silkscreen Layer

Figure 7b. Bottom Layer

Figure 7d. Bottom Silkscreen Layer