ADL5604 Analog Devices, ADL5604 Datasheet - Page 15

• Manufacturer Part Number: ADL5604
• Description: 700 MHz To 2700 MHz 1 W RF Driver Amplifier
• Manufacturer: Analog Devices

APPLICATIONS INFORMATION
BASIC LAYOUT CONNECTIONS
The basic connections for operating the ADL5604 are shown in Figure 35.
Power Supply
The voltage supply for the ADL5604, which ranges from 4.75 V
to 5.25 V, should be connected to the VCC1 pin. The dc bias to
the output stage is supplied through L1 and is connected to the
RFOUT pin. Three decoupling capacitors, C6, C7, and C8, are
used to prevent RF signals from propagating on the dc lines. The
VBIAS and VCC2 pins are connected to the main supply voltage,
VCC1, through the R2 and R5 resistors. Additional decoupling
capacitors, C9, C10, C11, and C12, are required on the VCC2
and VBIAS pins.
RF Input Interface
Pin 1 and Pin 2 are the RF input pins for ADL5604. The RF
input is easily matched with two or three components and a
RFIN
NOTES
1. THE COMPONENTS CONTAINED INSIDE THE DASHED BOX ARE ONLY REQUIRED IF IT IS
DESIRED TO POWER DOWN THE ADL5604.
VBIAS
0Ω
C1
NOTE 1
VBIAS
1.3pF
OPEN
10nF
0.1µF
C3
C11
C12
R6
0Ω
R3
0.1µF
C14
R4 OPEN
0.1µF
C15
C4
2.7pF
0.1µF
10nF
C10
C9
0Ω
R2
+VS
–VS
U2
301Ω
AD8009
R1
R8
0Ω
R5
0Ω
1
2
3
4
Figure 35. Basic Connections
VCC2
RFIN
RFIN
VBIAS
VCC2
GND GND GND GND
GND GND GND GND
Rev. 0 | Page 15 of 24
GND1
16
5
ADL5604
15
6
GND2
14
7
RFOUT
RFOUT
RFOUT
RFOUT
13
8
microstrip line used as an inductor. If additional inductance is
required, C3 can be replaced with an inductor. See the ADL5604
Match section for the component values and spacing for the
different frequency bands.
RF Output Interface
Pin 9 to Pin 12 are used as the RF output pins. The C5 shunt
capacitor and the inductance from the microstrip line match RF
output to 50 Ω. See the ADL5604 Match section for the com-
ponent values and spacing for the different frequency bands.
Power-Down Circuit
Device U2 and its associated circuitry can be used to power
down the ADL5604. To connect U2, remove the R2 resistor and
place a 0 Ω resistor in place of R4.
GND3
11
10
12
9
R10
R9
0Ω
0Ω
VCC1
L1
16nH
0.1µF
10nF
10µF
C6
C7
C8
2.4pF
L2
OPEN
C5
22pF
C2
RFOUT
www.DataSheet4U.com
ADL5604