Micrel, Inc.

MICRF112

February 2013

16

M9999-020713

Evaluation Board Schematic

Figure 5. TX112-1 Evaluation Board Schematic (MSOP)

Note: Configuration is for ASK operation. Values in parenthesis are for 315MHz.

Functional Description of the TX112-1

Evaluation Board

The layout of the TX112-1 Evaluation Board PCB is

shown on page 15. Figure 5 is a detailed schematic of

the TX112-1. Components labeled “NP” use different

configurations for FSK operation. Table 2 describes

each header pin connector used in the evaluation board.

Pin

Function Name

Functional Description

J1-1

VDD

1.8V to 3.6V

J1-2

Ground

VSS

J1-3

ASK INPUT

Modulating Data Input, ASK or FSK

J2-1

REF-OSC

External Reference Input

J2-2

GROUND

VSS

J2-3

ENABLE

Enable Input, Active High

Table 4. Header Pin Connectors