ML2724
PIN
24
SIGNAL
NAME
VCCA
I/O
PWR
FUNCTION
DC power supply Input to Voltage
Regulators and unregulated loads: 2.7 to
3.8V. VCCA is the main (or master)
analog VCC pin. There must be
capacitors to ground from this pin to
decouple (bypass) supply noise.
DC ground to IF, Demodulator, and Data
Slicer circuits.
DC power supply decoupling point for
Quadrature Mixer and IF filter circuits. A
220nF capacitor must be tied between
this pin and ground to decouple (bypass)
noise and to stabilize the regulator.
DC power supply decoupling point for IF,
Demodulator, and Data Slicer circuits. A
220nF capacitor must be tied between
this pin and ground to decouple (bypass)
noise and to stabilize the regulator.
DC power supply input to the interface
logic and control registers. This supply is
not connected internally to any other
supply pin, but its voltage must be less
than or equal to the VCCA supply and
greater than 2.7V. A capacitor must be
tied between this pin and ground to
decouple (bypass) noise.
N/A
DIAGRAM
25
27
GNDDMD
RVQMIF
GND
PWR
N/A
N/A
29
RVDMD
PWR
N/A
31
VDD
PWR
N/A
TRANSMIT/RECEIVE
17
RXI
I (analog)
Receive RF Input. Nominal impedance at
2445 MHz is 2.6-j2.6 with a simple
matching network required for optimum
noise figure. This input connects to the
base of an NPN transistor and should be
AC coupled.
VCCA
24
0.7V
RXI
17
4k
VSS (PIN 8)
VCCA
(PIN 24)
GNDRF 18
8
VSS
21
TXO
O (analog)
TX RF open-collector output. This output
requires a DC path to VCCA.
DS2724-F-01
FINAL DATASHEET
APRIL 2003
8
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
