OMO ElectronicOMO Electronic
Expand menu
0 Cart

ADF5002BCPZ

P1-P3P4-P6P7-P9P10-P12P13-P13
ADF5002
Rev. 0 | Page 6 of 1
TYPICAL PERFORMANCE CHARACTERISTICS
–
5
–10
–15
–25
–35
–45
–50
2.4 3.0 3.6
HARMONIC POWER (dBm)
VDDx (V)
–60
–50
–40
–30
–20
–10
0
2
0 5 10 15 25
20 30
INPUT FREQUENCY (GHz)
MINIMUM INPUT POWER (dBm)
8753-003
V
DD
= 3.0V
V
DD
= 3.3V
V
DD
= 3.6V
0
Figure 3. RF Input Sensitivity
40
35
30
25
20
15
10
5
0
I
DDx
(mA)
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9
VDDx (V)
08753-004
I
DD_IN
f
IN
= 10GHz, P
IN
= 0dBm
I
DD_OUT
Figure 4. I
DD1
and I
DD2
vs. VDDx, f
IN
= 10 GHz, P
IN
= 0 dBm
0
–2
–4
–6
–8
–10
–14
–18
–12
–16
OUTPUT POWER (dBm)
–20
2.5 2.9 3.3 3.7
VDDx (V)
3.92.7 3.1 3.5
08753-005
f
IN
= 10GHz, P
IN
= 0dBm
Figure 5. RF Output Power (Single-Ended) vs. VDDx, f
IN
= 10 GHz, P
IN
= 0 dBm
2.7 3.3
–20
–30
–40
FIRST HARMONIC
THIRD HARMONIC
FIFTH HARMONIC
SEVENTH HARMONIC
EIGHTH HARMONIC
NINTH HARMONIC
ELEVENTH HARMONIC
08753-006
Figure 6. RF Output Harmonic Content vs. VDDx
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
05
OUTPUT POWER (dBm)
10 20 3015 25
INPUT FREQUENCY (GHz)
f
IN
= 10GHz, V
DD
= 3.3V
8753-007
0
Figure 7. RF Output Power vs. RF Input Frequency, f
IN
= 10 GHz, V
DD
= 3.3 V
ADF5002
Rev. 0 | Page 7 of 1
08753-00
2
EVALUATION BOARD PCB
The evaluation board has four connectors as shown in Figure 8.
The RF input connector (J4) is a high frequency precision SMA
connector from Emerson. This connector is mechanically
compatible with SMA, 3.5 mm, and 2.92 mm cables.
8
Figure 8. Evaluation Board Silkscreen—Top View
The evaluation board is powered from a single 3.0 V to 3.6 V
supply, which should be connected to the J1 SMA connector.
The power supply can also be connected using the T3 (VDDx)
and T2 (GND) test points.
The differential RF outputs are brought out on the J2 and J3
SMA connectors. If only one of the outputs is being used, the
unused output should be correctly terminated using a 50 Ω
SMA termination.
The chip enable (CE) pin can be controlled using the T1 test
point. If this function is not required, the test point can be left
unconnected.
PCB MATERIAL STACK-UP
The evaluation board is built using Rogers RO4003C material
(0.008 inch). RF track widths are 0.015 inch to achieve a controlled
50 Ω characteristic impedance. The complete PCB stack-up is
shown in Figure 9.
FR4 PREPREG
0.0372”
0.5oz (18µm) FINISHED COPPER
ROGERS RO4003C LAMINATE 0.008”
ε
r
= 3.38. STARTING COPPER WEIGHT 0.5oz/0.5oz
1.5oz (53µm) FINISHED COPPER
0.5oz (18µm) FINISHED COPPER
1.5oz (53µm) FINISHED COPPER
ROGERS RO4003C LAMINATE 0.008”
ε
r
= 3.38. STARTING COPPER WEIGHT 0.5oz/0.5oz
0.062” ± 0.003”
COPPER TO COPPER
08753-009
Figure 9. Evaluation Board PCB Layer Stack-Up
BILL OF MATERIALS
Table 4.
Qty Reference Designator Description Supplier Part Number
1 C1 0.1 μF, 0603 capacitor Murata GRM188R71H104KA93D
1 C2 10 pF, 0402 capacitor Murata GRM1555C1H100JZ01D
3 J1, J2, J3 SMA RF connector Emerson
142-0701-851
1 J4 SMA RF connector Emerson
142-0761-801
3 T1, T2, T3 Test points Vero
20-2137
1 U1 ADF5002 RF prescaler Analog Devices, Inc. ADF5002BCPZ
ADF5002
Rev. 0 | Page 8 of 12
ADF5002
PRESCALER
VDD1
RFOUT
VDD2
ADF4156
PLL
RF
IN
A
10pF 0.1µF
CP
220Ω
330Ω
1.8nF
47nF
1kΩ
RFIN
APPLICATION CIRCUIT
The ADF5002 can be connected either single-ended or differ-
entially to any of the Analog Devices PLL family of ICs. It is
recommended that a differential connection be used for best
performance and to achieve maximum power transfer. The
application circuit shown in Figure 10 shows the ADF5002
used as the RF prescaler in a microwave 16 GHz PLL loop. The
ADF5002 divides the 16 GHz RF signal down to 2 GHz, which
is input differentially into the ADF4156 PLL. An active filter
topology, using the OP184 op amp, is used to provide the wide
tuning ranges typically required by microwave VCOs.
The positive input pin of the OP184 is biased at half the ADF4156
charge pump supply (V
P
). This can be easily achieved using a
simple resistor divider, ensuring sufficient decoupling close to
the +IN A pin of the OP184. This configuration, in turn, allows
the use of a single positive supply for the op amp. Alternatively,
to optimize performance by ensuring a clean bias voltage, a low
noise regulator such as the ADP150 can be used to power the
resistor divider network or the +IN A pin directly.
RFOUT RF
IN
B
GND
820pF
1.8nF
MICROWAVE
VCO
RFOUT VTUNE
37Ω
150Ω150Ω
1µF
V
P
/2
18Ω
6dB ATTENUATION PAD
18Ω
16GHz OUT
DECOUPLING
INTEGRATED
OP184
OP AMP
0
8753-010
Figure 10. ADF5002 Used as the RF Prescaler in a Microwave 16 GHz PLL Loop
P1-P3P4-P6P7-P9P10-P12P13-P13

ADF5002BCPZ

Mfr. #:
Buy ADF5002BCPZ
Manufacturer:
Analog Devices Inc.
Description:
Prescaler 4 GHz - 18 GHz Divide by 8
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet