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RF2516
Rev A17 DS060712
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Pin
Function
Description
Interface Schematic
1OSC B
This pin is connected directly to the reference oscillator transistor base.
The intended reference oscillator configuration is a modified Colpitts. A
68pF capacitor should be connected between pin 1 and pin 2.
2OSC E
This pin is connected directly to the emitter of the reference oscillator tran-
sistor. A 33pF capacitor should be connected from this pin to ground.
See pin 1.
3PD
Power Down control for all circuitry. When this pin is a logic “low” all circuits
are turned off. When this pin is a logic “high”, all circuits are operating nor-
mally. A “high” is VCC. Diodes shown in the interface schematic provide
3kV electrostatic discharge (ESD) protection using the human body model.
4GND
Ground connection for the TX OUT amp. Keep traces physically short and
connect immediately to ground plane for best performance. Diodes shown
in the interface schematic provide 3kV electrostatic discharge (ESD) pro-
tection using the human body model.
5TXOUT
Transmitter output. This output is an open collector and requires a pull-up
inductor for bias/matching and a tapped capacitor for matching.
6GND1
Ground connection for the TX output buffer amplifier. Diodes shown in the
interface schematic provide 3kV electrostatic discharge (ESD) protection
using the human body model.
7VCC1
This pin is used to supply bias to the TX buffer amplifier. Diodes shown in
the interface schematic provide 3kV electrostatic discharge (ESD) protec-
tion using the human body model.
8MOD IN
AM analog or digital modulation can be imparted to the carrier by an input
to this pin. An external resistor is used to bias the output amplifiers through
this pin. The voltage at this pin must not exceed 1.1V. Higher voltages may
damage the device. Diodes shown in the interface schematic provide 3kV
electrostatic discharge (ESD) protection using the human body model.
9VCC2
This pin is used to supply DC bias to the VCO, crystal oscillator, pre-scaler,
phase detector, and charge pump. An IF bypass capacitor should be con-
nected directly to this pin and returned to ground. Diodes shown in the
interface schematic provide 3kV electrostatic discharge (ESD) protection
using the human body model.
See pin 7.
10
GND2
Digital PLL ground connection. Diodes shown in the interface schematic
provide 3kV electrostatic discharge (ESD) protection using the human body
model.
OSC E
V
CC
OSC B
V
CC
PD
TX OUT
MOD IN
RF IN
VCC1
V
CC
1 k
Ω
MOD IN
TX OUT
V
CC
GND
V
CC
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