ml2722 Sirenza Microdevices, ml2722 Datasheet - Page 11

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

DS2722-F-06
11
7
9
TPC/TPQ
REF
QPO
O (Open
Drain)
O
I
Transmit power control output. This
open-drain output is pulled low when the
TPC bit in serial register #0 is set.
Transitions on TPC are synchronized to
the falling edge of RXON. In analog test
modes, this pin and the RSSI output
become test access points controlled by
the serial control bus.
Input for the 12.288MHz or 6.144MHz
reference frequency. This input is used
as the reference frequency for the PLL
and as a calibration frequency for the on-
chip filters. This is a self-biased CMOS
input that is designed to be driven either
by an AC-coupled sine wave.
Charge Pump Output of the phase
detector. This is connected to the
external PLL loop filter.
FINAL DATASHEET
REF
9
RVCC1
VSS
8
10
TPC
VCC5
VSS
24
8
TPC
MUX
MUX
TPQ
VCC5
24
VSS
8
40k
100
DECEMBER 2005
40k
Ω
VDD
VSS
31
8
ML2722
11 QPO
7 TPC/TPQ
11