CIRCUIT DESIGN LMD-400-R Kullanım Kılavuzu - Sayfa 6
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Sayfayı YazdırPIN DESCRIPTION
Pin name
RF
GND
VCC
TXSEL
RXSEL
AF
CLK
DATA
LE
OG_LMD-400-R-AB_v11e
I/O
Description
RF input terminal
I/O
Antenna impedance nominal 50
GROUND terminal
The GND pins and the feet of the shield case
I
shoud be connected to the wide GND
pattern.
Power supply terminal
I
DC 3.0 to 5.5 V
TX select terminal
GND = TXSEL active
I
To enable the transmitter circuits, connect
TXSEL to GND and RXSEL to OPEN or 2.8
V.
RX select terminal
GND= RXSEL active
I
To enable the receiver circuits, connect
RXSEL to GND and TXSEL to OPEN or 2.8
V.
Analogue output terminal
There is DC offset of approx. 1 V.
O
Refer to the specification table for amplitude
level.
PLL data setting input terminal
I
Interface voltage H = 2.8 V, L = 0 V
PLL data setting input terminal
I
Interface voltage H = 2.8 V, L = 0 V
PLL data setting input terminal
I
Interface voltage H = 2.8 V, L = 0 V
Equivalent circuit
2.8V
6
OPERATION GUIDE
47P
SAW FILTER
100nH
REG
10µ
22µ
47P
10
20K
2.8V
10
20K
2.8V
2K
CLK
MB15E03
DATA
2K
MB15E03
2K
LE
MB15E03
Circuit Design, Inc.
RF
GND
VCC
47P
2.8V
TXSEL
2.8V
RXSEL