LV2700V Datasheet, PDF (6/9 Pages) Sanyo Semicon Device – Spread Spectrum Communications IC

Continued from preceding page.
Pin No.
Pin
Pin voltage(V)
LV2700V
Pin function
23
LPFIN
Same as Demodulated signal input (loop filter output) used
V7
in reception.
Equivalent circuit
24
RXPDOUT
Same as Pin 25 buffer output. Connect an external low-
V25
pass filter between pins 23 and 24 if required.
25
RXLPF
1.5
Connection for the 236-MHz PLL loop filter used
in reception.
26
LPFOUT
27
TX V_CC
Control input for the 236-MHz VCO. The LV2700V
1.5
includes a switch for selecting the loop filter
depending on the mode (transmission or
reception).
Transmission power supply
28
VCOIN
1/2 V_CC
Input for the output from the 236-MHz VCO.
Minimum input level: about –20 dBm
29
AGND
Analog system ground
30 TX RFOUT
1.3
Spread-spectrum RF output (in transmission
mode)
Spectrum
spreader
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