ml2722 Sirenza Microdevices, ml2722 Datasheet - Page 10

• Manufacturer Part Number: ml2722
• Description: 900mhz Low-if 1.5mbps Fsk Transceiver
• Manufacturer: Sirenza Microdevices

DS2722-F-06
MODE CONTROL AND INTERFACE LINES
1
2
3
XCEN
RXON
PAON
O (CMOS)
I (CMOS)
I (CMOS)
Enables the bandgap reference and
voltage regulators when high. With
XCEN low the device consumes only
leakage current in STANDBY mode
when low. XCEN low also preserves
register contents and allows register
writes. This is a CMOS input, and the
thresholds are referenced to VDD and
VSS.
Switches the transceiver between
TRANSMIT and RECEIVE modes.
Circuits are powered up and signal paths
reconfigured according to the operating
mode. This is a CMOS input, and the
thresholds are referenced to VDD and
VSS.
Enables the off-chip PA at the correct
times in a Transmit slot. Goes high when
transmit RF is present at TRFO; goes low
5μs before transmit RF is removed from
TRFO. Has interlock logic to shut down
the PA if the PLL does not lock.
FINAL DATASHEET
RXON
DIN
RXON
DIN
XCEN
XCEN
30
30
2
2
1
1
VDD
VDD
VSS
VSS
31
31
8
8
VDD
8
31
DECEMBER 2005
VSS
ML2722
3
PAON
10