ADL5375-05-EVALZ Analog Devices, ADL5375-05-EVALZ Datasheet - Page 20

• Manufacturer Part Number: ADL5375-05-EVALZ
• Description: RF Development Tools ADL5375-05 EVAL
• Manufacturer: Analog Devices
• Type: Modulators / Demodulatorsr
• Series: ADL5375r

Specifications of ADL5375-05-EVALZ

• Rohs: yes
• Product: Evaluation Boards
• Factory Pack Quantity: 1

ADL5375
BASIC CONNECTIONS
Figure 54 shows the basic connections for the ADL5375.
POWER SUPPLY AND GROUNDING
Pin VPS1 and Pin VPS2 should be connected to the same 5 V
source. Each pin should be decoupled with a 100 pF and
0.1 μF capacitor. These capacitors should be located as close
as possible to the device. The power supply can range between
4.75 V and 5.25 V.
The ten COMM pins should be tied to the same ground plane
through low impedance paths.
The exposed paddle on the underside of the package should
also be soldered to a ground plane with low thermal and
electrical impedance. If the ground plane spans multiple layers
on the circuit board, they should be stitched together with nine
vias under the exposed paddle as illustrated in the Evaluation
Board section. The
thermal and electrical grounding of the LFCSP (QFN) package
in detail.
BASEBAND INPUTS
The baseband inputs (IBBP, IBBN, QBBP, and QBBN) should be
driven from a differential source. The nominal drive level used
in the characterization of the
(or 500 mV p-p on each pin).
LOIP
AN-772
A
VPOS
VPOS
S1
100pF
100pF
C6
Application Note discusses the
ADL5375
B
C7
C5
0.1µF
is 1 V p-p differential
COMM
COMM
DSOP
LOIP
LOIN
NC
C3
100pF
1
2
3
4
5
6
QBBN
IBBN
Figure 54. Basic Connections for the
EXPOSED PADDLE
ADL5375
Rev. B | Page 20 of 36
Z1
All the baseband inputs must be externally dc biased. The
recommended common-mode level is dependent on the
version of the ADL5375.


LO INPUT
The LO input is designed to be driven from a single-ended
source. The LO source is ac-coupled through a series capacitor
to the LOIP pin while the LOIN pin is ac-coupled to ground
through a second capacitor.
The typical LO drive level, which was used for the characterization
of the ADL5375, is 0 dBm.
Differential operation is also possible, in which case both sides
of the differential LO source should be ac-coupled through a
pair of series capacitors to the LOIP and LOIN pins.
RF OUTPUT
The RF output is available at the RFOUT pin (Pin 16), which can
drive a 50 Ω load. The internal balun provides a low dc path to
ground. In most situations, the RFOUT pin must be ac-coupled
to the load.
IBBP
QBBP
ADL5375-05: 500 mV
ADL5375-15: 1500 mV
ADL5375
18
17
16
15
14
13
VPS1
COMM
RFOUT
NC
COMM
NC
100pF
100pF
C2
C1
GND
0.1µF
C4
RFOUT
VPOS
Data Sheet