CIRCUIT DESIGN STD-302 Manual de usuario descargar pdf (Pagina 6)

OG_STD-302S-429M_v11e Circuit Design, Inc.

6

OPERATION GUIDE

PIN DESCRIPTION

Pin name I/O Description Equivalent circuit

RF I/O

RF input terminal

Antenna impedance nominal 50 Ω

GND I

GROUND terminal

The GND pins and the feet of the

shield case should be connected to a

wide GND plane.

VCC I

Power supply terminal

DC 3.0 to 5.5 V

TXSEL I

TX select terminal

GND = TXSEL active

To enable the transmitter circuits,

connect TXSEL to GND and RXSEL

to OPEN or 2.8 V.

RXSEL I

RX select terminal

GND= RXSEL active

To enable the receiver circuits,

connect RXSEL to GND and TXSEL

to OPEN or 2.8 V.

AFOUT O

Analogue output terminal

There is a DC offset of approx. 1 V.

Refer to the specification table for

amplitude level.

CLK I

Clock terminal fof PLL data setting

input

Interface voltage H = 2.8 V, L = 0 V

DATA I

PLL data setting input terminal

Interface voltage H = 2.8 V, L = 0 V

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

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