Preliminary
RF2690
Auto Calibration Mode
The filters are automatically tuned when the ENCAL pin goes high. The filters are reset to a nominal value whenever the
ENCAL pin goes low. The auto calibration circuitry is independent of the EN WUP and the EN RX control pins.
The EN RX and ENCAL pins can be connected together if desired.
Mode Control Truth Table
Mode
EN RX
EN WUP
Power Down
W-CDMA RX Warm-Up
W-CDMA RX
0
1
1
X
0
1
Logic
EN RX
Chip Enable
If EN RX=0, then entire IC is powered down.
EN WUP
Warm-up Enable If EN WUP=0, then IC is in warm-up mode.
7
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Rev A4 010918