ADL5605ACPZ-R7 Analog Devices Inc, ADL5605ACPZ-R7 Datasheet - Page 16

• Manufacturer Part Number: ADL5605ACPZ-R7
• Description: IC RF DRIVER AMP 16-LFCSP
• Manufacturer: Analog Devices Inc
• Series: -r

Specifications of ADL5605ACPZ-R7

• Current - Supply: 307mA
• Frequency: 700MHz ~ 1GHz
• Gain: 23dB
• Noise Figure: 4.8dB
• P1db: 30.9dB
• Package / Case: *
• Rf Type: General Purpose
• Test Frequency: 943MHz
• Voltage - Supply: 4.75 V ~ 5.25 V
• Noise Figure Typ: 4.8dB
• Power Dissipation Pd: 2W
• Supply Current: 307mA
• Supply Voltage Range: 4.75V To 5.25V
• Rf Ic Case Style: LFCSP
• No. Of Pins: 16
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: ADL5605ACPZ-R7TR

ADL5605
EVALUATION BOARD
The schematic of the
Figure 36. The evaluation board uses 25 mils wide, 50 Ω traces
and is made from IS410 material with a 20 mils gap to ground.
The evaluation board is tuned for operation at 943 MHz. The
inputs and outputs should be ac-coupled with appropriately
sized capacitors; therefore, for low frequency applications, the
value of C1 and C2 may need to be increased. DC bias is
provided to the output stage via an inductor (L1) connected
to the RFOUT pin. A bias voltage of 5 V is recommended.
Table 8. Evaluation Board Configuration Options, 943 MHz Frequency Tuning Band
Component
C1, C2
C3, C4, C5, C6, C7,
C8, C9, C10, C11,
C12, C13, C14
C
C
L2
L1
R1, R2, R4, R5
Exposed Paddle
IN
OUT
VCC3
OPEN
R4
0Ω
R1
DISABLE
Function/Notes
Input/output dc blocking capacitors.
Power supply decoupling capacitors. Power supply decoupling capacitors are required to
filter out the high frequency noise on the power supply. The smallest capacitor should be the
closest to the ADL5605. The main bias that goes through RFOUT is the most sensitive to noise
because the bias is connected directly to the RF output.
Input matching capacitor. To match the
band, C
from the device so that the microstrip line can act as inductance for the matching network
(see Table 7). If space is at a premium, an inductor can take the place of the microstrip line.
Output matching capacitor. The output match is set for 943 MHz and is easily changed for
other frequency tuning bands. The tolerance of this capacitor should be tight. C
a specific distance from the device so that the microstrip line can act as inductance for the
matching network (see Table 7). If space is at a premium, an inductor can take the place of the
microstrip line. A short length of low impedance line on the output is embedded in the match.
Output matching inductor. The output match is set for 943 MHz and is easily changed for other
frequency tuning bands. A high Q Coilcraft inductor with tight tolerance is recommended.
The main bias for the
impedance for the frequency of operation while providing low resistance for the dc current.
The evaluation board uses a Coilcraft 0603HP-18NX_LU inductor; this 18 nH inductor provides
some of the match at 943 MHz.
To provide bias to all stages through just one supply, set R1 and R2 to 0 Ω, and leave R4 and
R5 open. To provide separate bias to stages, set R1 and R2 to open and R4 and R5 to 0 Ω.
The paddle should be connected to both thermal and electrical ground.
ADL5605
VCC2
RFIN
OPEN
IN
R5
is not required. For the 748 MHz frequency tuning band, C
C10
OPEN
evaluation board is shown in
C11
10µF
100pF
C4
OPEN
C1
C6
0.01µF
C14
10µF
ADL5605
Figure 36. Evaluation Board, 943 MHz Frequency Tuning Band
C3
10pF
C
N/A
IN
C5
100pF
C13
0.01µF
comes through L1 to the output stage. L1 should be high
C12
100pF
R2
0Ω
ADL5605
1
2
3
4
Rev. 0 | Page 16 of 20
RFIN
DISABLE
VCC
VBIAS
NC
NC
16
5
ADL5605
at the 943 MHz or 881 MHz frequency tuning
NC
NC
15
6
NC
NC
14
7
The evaluation board has a short, non-50 Ω line on its output
to accommodate the four output pins and to allow for easier low
inductance output matching. The pads for Pin 9 to Pin 12 are
included on this microstrip line and are included in all matches.
The evaluation board uses numbers as identifiers to aid in the
placement of matching components at both the RF input and
RF output of the device. Figure 37 and Figure 38 show images
of the board layout.
RFOUT
RFOUT
RFOUT
RFOUT
NC
NC
13
8
11
10
12
9
IN
is set at a specific distance
VCC1
0.01µF
100pF
L1
18nH
10µF
C7
C8
C9
1.6nH
L2
OUT
C
is set at
OUT
8pF
100pF
C2
Default Value
C1, C2 = 100 pF
C3 = 10 pF
C5, C7, C12 = 100 pF
C6, C8, C13 = 0.01 μF
C9, C11, C14 = 10 μF
C4, C10 = open
C
C
L2 = 1.6 nH HQ
L1 = 18 nH
R1, R2 = 0 Ω
R4, R5 = open
RFOUT
IN
OUT
= open
= 8.0 pF HQ