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Pin Descriptions
PNP-1090-P22
Mnemonic
FUNCTION
RF
RF Output. This pin is AC coupled and should be connected to a non-reflective 50 ohm load.
V1
Supply Input. Decoupling capacitors to the ground plane should be placed as close as possi-
ble to this pin. Use an ultra low-noise regulator followed by an RC filter for best noise.
V2
Supply Input. Decoupling capacitors to the ground plane should be placed as close as possi-
ble to this pin. Use an ultra low-noise regulator followed by an RC filter for best noise.
REF
Reference Input. This is a CMOS input with a nominal threshold of V
2
/2 and a dc equivalent
input resistance of 100K ohms. This input can be driven from a CMOS or TTL crystal clock
oscillator or it can be ac coupled.
GND
Analog and RF Ground.
DA0
Serial Interface. This input functions as
CS
in MICROWIRE/SPI Bus mode. This input func-
tions as
SDA
in I
2
C BUS mode.
DA1
Serial Interface. This input functions as
DATA
in MICROWIRE/SPI BUS mode. This input
functions as
SCL
in I
2
C BUS mode.
DA2
Serial Interface. This input functions as
CLOCK
in MICROWIRE/SPI BUS mode. This input
must be connected to the
DIGITAL GROUND
in I
2
C BUS mode.
LD
Lock Detect. This output is active high and provides a continuous digital lock status.
Absolute Maximum Ratings
V
1
to Ground
-0.3 to +12.7 Vdc
V
2
to Ground
-0.3 to +3.6 Vdc
REF IN to Ground
-0.3 to (V
2
+ 0.3) Vdc
RF OUT to Ground
+/- 25 Vdc
Digital I/O to Ground
-0.3 to (V
2
+ 0.3) Vdc
Operating Temperature
-40
°
to +85
°
C
Storage Temperature
-55
°
to +100
°
C
Stress above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. This is a stress
rating only. Operation of the device above the conditions listed
in the operational sections of this specification is not implied.
Ordering Guide
PNP-1090-P22
Model
I
2
C Address
Type Code
PNP-1090-P22
Default
P003
PNP-1090A-P22
Default + 1
P003
PNP-1090B-P22
Default + 2
P003
PNP-1090C-P22
Default + 3
P003
CAUTION!
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as
4000V readily accumulate on the human body and test equipment and can dis-
charge without detection. Although the PNP family of synthesizers feature ESD
protection circuitry, permanent damage may occur on devices subjected to high-
energy electrostatic discharges. Therefore, proper ESD precautions are recom-
mended to avoid performance degradation or loss of functionality