8-387
RF2860
Rev A7 031105
Pin
Function
Type Description
Interface Schematic
1
LNA GAIN
DI
Logic input. High activates LNA. Low selects LNA bypass
mode.
2
LNA IN
AI
US PCS LNA input.
KPCS LNA input.
GPS LNA input.
IMT-2000 LNA input.
3GND
P
Ground via within 0.2mm of pin required.
4LNA OUT
AO
PCS LNA output. Simple external L-C components required
for matching and VCC supply.
5
ISET2
AI
External resistor required to set the mixer operating current.
6
ISET1
AI
External resistor required to set the LNA operating current.
7
MIX IN
AI
KPCS mixer RF single-end input. Matched to 50
Ω.
USPCS mixer RF single-end input. Matched to 50
Ω.
GPS mixer RF single-end input. Matched to 50
Ω.
IMT-2000 mixer RF single-end input. Matched to 50
Ω.
8RF VCC
P
External capacitor and inductor placed close to package
required.
9
IF OUT+
AO
IF output. Open collector.
10
IF OUT-
AO
IF output. Open collector.
See pin 9.
11
GND
P
Ground.
12
LO IN
AI
LO single-end input. Matched to 50
Ω.
13
VCC
P
External bypass capacitor may be required.
14
LO OUT
AO
LO output. Internal DC block. Drives 50
Ω.
15
TX BUFF
ENAB
DI
Logic input. High enables TX LO output buffer amplifiers.
16
ENABLE
DI
Logic input. Low level powers down the IC.
Pkg
Base
GND
P
Ground connection. The backside of the package should be
soldered to a top side ground pad which is connected to the
ground plane with multiple vias.
Legend:
DI=Digital Input from Baseband Chip
AI=Analog Input
AO=Analog Output
P=VCC or GND
LNA GAIN
LNA IN
V
CC
LNA OUT
LNA EMITTER
MIX IN
IF+
IF-
LO IN
70
Ω
TX BUFF
ENAB
ENABLE
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