AN2452

Evaluation board

11/21

2.2

Description

2.2.1

Top view

Figure 4.

STW8110x EVB (1G/2G/4G): top view

1.

Digital interface connector: connect to the PC parallel port through the supplied cable.

2.

Power supply (5 V).

3.

Hardware power down: turn on/off the device.

4.

5.

6.

Identification label. Two ID labels are present on the board network (see also

2.2.2 - 1):

single output EVB top: STW8110x-EVBy,

bottom: aaaaaaaaxyzzz, where:

aaaaaaaa = internal ST code

x = 1,2,3 depending on the device (STW81101/2/3)

y = 1,2,4 depending on the board (EVB1G/2G/4G)

zzz = progressive board number

7.

RF output.

8.

Single output EVB: RF output matching network (see also

2.2.2 - 3 and Figure 6).

Differential output EVB: RF output de-coupling capacitors (C46 and C47).

9.

Reference clock input.

10. STW8110x.

11. Loop filter and external resistor controlling the charge pump current (R15).

12. Lock detector LED.

53mm

57mm

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