ML2722
PIN DESCRIPTIONS
PIN
SIGNAL
NAME
I/O
FUNCTION
DIAGRAM
POWER & GROUND
8
10
VSS
RVCC1
I (digital)
O (analog)
Ground for digital I/O circuits and control
logic.
DC power supply decoupling point for the
PLL dividers, phase detector, and charge
pump. This pin is connected to the output
of the regulator and to the PLL supplies.
There must be a capacitor to ground
from this pin to decouple (bypass) noise
and to stabilize the regulator.
Ground for the PLL dividers, phase
detector, and charge pump.
DC Power Supply Input to the VCO
voltage regulator. Must be connected to
RVCC6 (pin 27) or RVCC7 (pin 29) via
decoupling network.
DC power supply decoupling point for the
VCO. Connected to the output of the
VCO regulator. A capacitor must be tied
between this pin and ground to decouple
(bypass) noise and to stabilize the
regulator.
DC ground for VCO and LO circuits.
Signal ground for RF small signal
circuits. Pins 17, 18, and 19 should have
short, direct connections to each other
and additional connections to ground.
Ground return for the Receive RF input.
Signal ground for the Receive mixers.
DC and Signal ground for the Transmit
RF Output buffer.
DC power supply decoupling point for the
LO chain. Connected to the output of a
regulator. There must be a capacitor to
ground from this pin to decouple
(bypass) noise and to stabilize the
regulator.
DC power supply input to voltage
Regulators and unregulated loads. VCC5
is the main (or master) analog VCC pin.
There must be a capacitor to ground
from this pin to decouple (bypass) noise
and to stabilize the regulator.
DC ground to IF, Demodulator, and Data
Slicer circuits.
DC power supply decoupling point for
Quadrature Mixer and IF filter circuits. A
capacitor must be tied between this pin
and ground to decouple (bypass) noise
12
13
GND
VCC2
I (analog)
I (analog)
14
RVCC3
O (analog)
16
17
GND
GND
I (analog)
I (analog)
18
19
20
22
GND
GND
GND
RVCC4
I (analog)
I (analog)
I (analog)
O (analog)
24
VCC5
I (analog)
25
27
GND
RVCC6
I (analog)
O (analog)
DS2722-F-05
FINAL DATASHEET
DECEMBER 2003
7
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
