AD8346ARUZ Analog Devices Inc, AD8346ARUZ Datasheet - Page 17

• Manufacturer Part Number: AD8346ARUZ
• Description: IC QUADRATURE MOD .8GHZ 16-TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD8346ARUZ

• Function: Modulator
• Lo Frequency: 800MHz ~ 2.5GHz
• Rf Frequency: 800MHz ~ 2.5GHz
• P1db: -3dBm
• Noise Floor: -147dBm/Hz
• Output Power: -6dBm
• Current - Supply: 55mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Test Frequency: 1.9GHz
• Package / Case: 16-TSSOP
• Frequency Range: 0.8GHz To 2.5GHz
• Rf Type: Quadrature
• Supply Voltage Range: 2.7V To 5.5V
• Rf Ic Case Style: TSSOP
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CDMA SETUP
For evaluating the AD8346 with CDMA waveforms, the setup
shown in Figure 35 was used. This is essentially the same setup
as that used for the single sideband characterization, except that
the AFG2020 was replaced with the AWG2021 for providing the
I and Q input signals, and the spectrum analyzer used to monitor
the output was changed to an FSEA30 Rohde & Schwarz analyzer
with vector demodulation capability. The I/Q input signals for
these measurements were IS95 baseband signals generated with
Tektronix I/Q SIM software and downloaded to the AWG2021.
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HP3631
HP8648C
CENTER 1.9GHz
+15V MAX
+25V MAX
–25V MAX
RFOUT
Figure 35. Evaluation Board CDMA Test Setup
COM
Figure 36. Typical CDMA Output Spectrum
VPS1
VN
GND
VP
LO
IN
ENBL
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P1
PC CONTROLLER
D1
D1
EVAL BOARD
CH PWR = –20.7dBm
ACP UPR = –71.8dBc
ACP LWR = –71.7dBc
MOTHERBOARD
AD8346
HP34970A
IN
AD8346
P1
187.5kHz/
D2
D2
IP
IP
VOUT
QP
QP
QN
D3
D3
For measuring ACPR, the I/Q input signals used were generated
with Pilot (Walsh Code 00), Sync (WC 32), Paging (WC 01),
and 6 Traffic (WC 08, 09, 10, 11, 12, 13) channels active. The
I/Q SIM software was set for 32× oversampling and was using a
BS equifilter. Figure 36 shows the typical output spectrum for
this configuration. The ACPR was measured 885 kHz away
from the carrier frequency.
For performing EVM, Rho, phase, and amplitude balance
measurements, the I/Q input signals used were generated with
only the pilot channel (Walsh Code 00) active. The I/Q SIM
software was set for 32× oversampling using a CDMA equifilter.
Q IN
QN
I IN
SPAN 1.875MHz
OUTPUT 1
OUTPUT 2
RF I/P
ARB FUNC. GEN
TEKAFG2020
SPECTRUM
ANALYZER
FSEA30
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AD8346