RF2483PCK-410 RFMD, RF2483PCK-410 Datasheet - Page 9

• Manufacturer Part Number: RF2483PCK-410
• Description: KIT EVAL FOR RF2483
• Manufacturer: RFMD
• Type: Modulatorr

Specifications of RF2483PCK-410

• Frequency: 700MHz ~ 2.4GHz
• For Use With/related Products: RF2483
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 689-1040

Rev A9 DS080403
Pin
10
11
12
7
8
9
BAND SEL
Function
GND LO
QSIG N
GND1
LOHB
LOLB
Description
Local oscillator input low band.
This input is biased internally at around 1.6V when the chip is in low band
mode and 0V when the chip is in high band mode or powered down. The
LO signal typically needs to be AC coupled.
The noise performance, carrier suppression at low output powers and side-
band suppression are all a function of LO power.
The optimum LO power is between 0dBm and 3dBm.
The device will work with LO powers as low as -20dBm however this is at
the expense of higher noise performance at high output powers and poorer
sideband suppression.
Ground return for the local oscillator input signals.
The GND LO pin is effectively the complementary LO input for both the high
band and low band LO signals. It has significant amounts of LO signal flow-
ing through it. This pin is brought out as an independent ground to enable
the PCB board designer to isolate the LO return from the RF outputs
ground and the general chip ground.
It is recommended that this ground is kept isolated from the die flag
ground. Any connections between the GND LO and any other ground
should be made through a ground plane.
Local oscillator input high band.
This input is biased internally at around 1.6V when the chip is in high band
mode and 0V when the chip is in low band mode or powered down. The LO
HB signal typically needs to be AC coupled.
The noise performance, carrier suppression at low output powers and side-
band suppression are all a function of LO power.
The optimum LO power is between 0dBm and 3dBm.
The device will work with LO powers as low as -20dBm however this is at
the expense of higher noise performance at high output powers and poorer
sideband suppression.
Ground for LO buffers.
Band select input to define active mode.
CMOS input.
Logic 1 (1.4V to VCC)=High band mode.
Logic 2 (0V to 0.5V)=Low band mode.
Quadrature channel negative baseband input port. See QSIGP.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
Interface Schematic
See pins 7 and 9.
See pin 6.
V
C C 2
G N D L O
G N D L O
5 0 Ω
V
RF2483
L O L B
L O H B
C C 2
1 2 p F
9 of 28