AD8345ARE Analog Devices Inc, AD8345ARE Datasheet - Page 17

• Manufacturer Part Number: AD8345ARE
• Description: Quadrature Mod 80MHz 16-Pin TSSOP EP Tube
• Manufacturer: Analog Devices Inc

Specifications of AD8345ARE

• Package: 16TSSOP EP
• Device Type: Modulator
• Maximum I/q Frequency: 80 MHz
• Modulation Type: Quadrature
• Operating Supply Voltage: 3.3|5 V
• Rohs Status: RoHS non-compliant
• Function: Modulator
• Lo Frequency: 250MHz ~ 1GHz
• Rf Frequency: 140MHz ~ 1GHz
• P1db: 2.5dBm
• Noise Floor: -155dBm/Hz
• Output Power: 2dBm
• Current - Supply: 78mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Test Frequency: 800MHz
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP

CHARACTERIZATION SETUPS
SSB SETUP
Essentially, two primary setups are used to characterize the
AD8345. These setups are shown in Figure 37 and Figure 38.
Figure 37 shows the setup used to evaluate the product as a
single sideband modulator. The interface board converts the
single-ended I and Q inputs from the arbitrary function
generator to differential inputs with a dc bias of approximately
0.7 V. The interface board also provides connections for power
supply routing. The HP34970A and its associated plug-in 34901
are used to monitor power supply currents and voltages being
supplied to the AD8345 characterization board. Two HP34907
plug-ins are used to provide additional miscellaneous dc and
control signals to the interface board. The LO inputs are driven
directly by an RF signal generator, and the output is measured
directly with a spectrum analyzer. With the I channel driven
with a sine wave and the Q channel driven with a cosine wave,
the lower sideband is the single sideband output. The typical
SSB output spectrum is shown in Figure 36.
IEEE
IEEE
HP3631
HP8648C
IEEE
+15V MAX
+25V MAX
–25V MAX
RFOUT
PC CONTROLLER
COM
Figure 37. Characterization Board SSB Test Setup
IN
LO
ENBL
CHARACTERIZATION
IEEE
VPS1
VN
GND
VP
34901
IP
D1
D1
Rev. B | Page 17 of 20
AD8345
P1
BOARD
P1
INTERFACE
HP34970A
BOARD
IN
34907
D2
D2
QP
IP
VOUT
QN
QP QN
34907
D3
D3
Q_IN
–100
I_IN
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
RF I/P
OUTPUT_1
OUTPUT_2
ARB FUNCTION GEN
SPECTRUM
ANALYZER
CENTER = 900MHz
TEKAFG2020
Figure 36. Typical SSB Output Spectrum
HP8593E
SWEEP OUT
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IEEE
28V
SPAN = 1MHz
AD8345