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ADF5001BCPZ

P1-P3P4-P6P7-P9P10-P12P13-P13
ADF5001
Rev. A | Page 6 of 12
TYPICAL PERFORMANCE CHARACTERISTICS
–60
–50
–40
–30
–20
–10
0
0 5 10 15 20 25
FREQUENCY (GHz)
MINIMUM INPUT POWER (dBm)
ROOM TEMPERATURE
VDD1 = VDD2 = 3.3V
0
8402-003
Figure 3. RFIN Sensitivity
20
18
16
14
12
10
8
6
4
2
0
2.5 3.93.73.53.33.12.92.7
IDDx (mA)
VDDx (V)
IDD1
IDD2
08402-004
Figure 4. IDD1 and IDD2 vs. VDDx
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
2.5 3.93.73.53.33.12.92.7
RF OUTPUT POWER (dBm)
VDDx (V)
08402-005
Figure 5. RFOUT Power (Single-Ended) vs. VDDx, f
IN
= 10 GHz, P
IN
= 0 dBm
–
5
–10
–15
–20
–25
–30
–35
–40
2.4 2.7 3.0 3.3 3.6
POWER (dBm)
VDDx (V)
08402-006
FIRST HARMONIC
THIRD HARMONIC
FOURTH HARMONIC
FIFTH HARMONIC
Figure 6. RFOUT Harmonic Content
0
–5
–10
–15
–20
–25
–30
0
OUTPUT POWER (dBm)
30252015105
INPUT FREQUENCY (GHz)
08402-007
Figure 7. RFOUT Power vs. RFIN Frequency, f
IN
= 10 GHz, V
DD
= 3.3 V
ADF5001
Rev. A | Page 7 of 12
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.
08753-008
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 remain
unconnected.
PCB MATERIAL STACK-UP
The evaluation board is built using Rogers RO4003C material
(0.008 in.). RF track widths are 0.015 in. 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”
Er = 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”
Er = 3.38. STARTING COPPER WEIGHT 0.5oz/0.5oz
0.062” ± 0.003”
COPPER TO COPPER
08402-009
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
1 J4 3.5 mm RF SMA
connector
Emerson 142-0761-801
3 J1, J2, J3 3.5 mm RF SMA
connector
Johnson Components
142-0701-851
3 T1, T2, T3 Test points
Vero 20-2137
1 U1 ADF5001 RF
prescaler
Analog Devices, Inc.,
ADF5001BCPZ
ADF5001
Rev. A | Page 8 of 12
APPLICATION CIRCUIT
The ADF5001 can be connected either single-ended or differen-
tially to any of the Analog Devices PLL family of ICs. It is recom-
mended to use a differential connection for best performance
and to achieve maximum power transfer. The application circuit
shown in Figure 10 shows the ADF5001 used as the RF prescaler
in a microwave 16 GHz PLL loop. The ADF5001 divides down
the 16 GHz RF signal to 4 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
(VP). This can be easily achieved using a simple resistor divider,
ensuring sufficient decoupling close to the +IN A pin of the
OP184 thereby allowing 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 like the ADP150 can be
used to power the resistor divider network or the +IN A pin
directly.
ADF5001
PRESCALER
VDD1
RFOUT
RFOUT
VDD2
ADF4156
PLL
RF
IN
A
RF
IN
B
GND
10pF 0.1µF
CP
820pF
220Ω
330Ω
1.8nF
47nF
1kΩ
1.8nF
MICROWAVE
VCO
RFOUT VTUNE
RFIN
37Ω
150Ω150Ω
1µF
VP/2
18Ω
6dB PAD
18Ω
16GHz OUT
DECOUPLING
INTEGRATED
08402-010
OP184
OP AMP
Figure 10. ADF5001 Used as the RF Prescaler in a Microwave 16 GHz PLL Loop
P1-P3P4-P6P7-P9P10-P12P13-P13

ADF5001BCPZ

Mfr. #:
Buy ADF5001BCPZ
Manufacturer:
Analog Devices Inc.
Description:
Prescaler 4 GHz - 18 GHz Divide by 4
Lifecycle:
New from this manufacturer.
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