ADL5605-EVALZ AD [Analog Devices], ADL5605-EVALZ Datasheet - Page 13

• Manufacturer Part Number: ADL5605-EVALZ
• Description: 700 MHz to 1000 MHz
• Manufacturer: AD [Analog Devices]

APPLICATIONS INFORMATION
BASIC LAYOUT CONNECTIONS
The basic connections for operating the
in Figure 31. The RF matching components correspond to the
943 MHz frequency tuning band.
Power Supply
The voltage supply for the ADL5605, which ranges from 4.75 V
to 5.25 V, should be connected to the VCC1 test pin. The dc bias
to the output stage is supplied through L1 and is connected to the
RFOUT pin. Three decoupling capacitors (C7, C8, and C9) are
used to prevent RF signals from propagating on the dc lines. The
VBIAS and VCC pins can be directly connected to the main
supply voltage. Additional decoupling capacitors (C5, C6, C11,
C12, C13, and C14) are required on the VCC and VBIAS pins.
RF Input Interface
Pin 1 is the RF input pin for the ADL5605. The RF input is easily
matched to 50 Ω with only one shunt capacitor and the micro-
strip line used as an inductor. For the 881 MHz and 943 MHz
frequency tuning bands, the input requires no external matching
components.
VBIAS
DISABLE
VCC
RFIN
C11
10µF
C14
10µF
100pF
C1
C6
0.01µF
C13
0.01µF
ADL5605
C3
10pF
C5
100pF
C12
100pF
are shown
1
2
3
4
Figure 31. Basic Connections
RFIN
DISABLE
VCC
VBIAS
NC
NC
Rev. 0 | Page 13 of 20
16
5
ADL5605
NC
NC
15
6
NC
NC
14
7
RFOUT
RFOUT
RFOUT
RFOUT
13
NC
NC
8
For complete information about component values and spacing
for the different frequency tuning bands, see the ADL5605
Matching section.
RF Output Interface
Pin 9 to Pin 12 are the RF output pins. Inductor L2, the shunt
capacitor, C
used to match the RF output to 50 Ω. For complete information
about component values and spacing for the different frequency
tuning bands, see the ADL5605 Matching section.
Power-Down
The
to 5 V. When disabled, the
of current from the power supply and 1.4 mA from the DISABLE
pin. Decoupling Capacitor C3 is recommended to prevent the
propagation of RF signals. To completely shut down the device,
connect the VCC pin, the VBIAS pin, and the VCC1 test pin to
ground. In this state, the part draws approximately 1.4 mA from
the DISABLE pin.
10
12
11
9
ADL5605
VCC1
OUT
0.01µF
100pF
, and the inductance from the microstrip line are
can be disabled by connecting the DISABLE pin
L1
18nH
10µF
C7
C8
C9
1.6nH
L2
C
OUT
8pF
ADL5605
100pF
C2
draws approximately 5 mA
RFOUT
ADL5605