Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

ADL5375-05ACPZ-WP Datasheet(PDF) 27 Page - Analog Devices

Part No. ADL5375-05ACPZ-WP
Description  400 MHz to 6 GHz Broadband Quadrature Modulator
Download  36 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo 

ADL5375-05ACPZ-WP Datasheet(HTML) 27 Page - Analog Devices

Zoom Inzoom in Zoom Outzoom out
 27 / 36 page
background image
Data Sheet
ADL5375
Rev. C | Page 27 of 36
Using the AD9122 DAC For Carrier Feedthrough and
Unwanted Sideband Nulling
The AD9122 features an auxiliary DACs (Register 0x42,
Register 0x43, Register 0x46, and Register 0x47) or the digital
dc offset adjustments (Register 0x3C through Register 0x3F)
that can be used to null the carrier feedthrough by applying the
dc offset voltage at each main DAC channels. Unwanted
sideband suppression can be done by adjusting the I/Q phase
(Register 0x38 through Register 0x3B) and DAC FS (Register
0x40 and Register 0x44) registers.
GSM/EDGE OPERATION
The performance of the ADL5375-05 in a Multi-Carriers
GSM/EDGE environment is shown in Figure 68 and Figure 69.
Figure 68 illustrates the 6 MHz offset noise floor of the
ADL5375-05 at the six carriers MCGSM/EDGE(8-PSK) operating
condition vs. output power, and Figure 69 demonstrates IMD
performance of the same six carriers MCGSM/EDGE(8-PSK)
for the ADL5375-05 at 950 MHz. It is configured, as shown at
Figure 65, for this measurement. The AD9122 is set at −3 dB
digital FS back off, FDATA = 368.64 MSPS, 2× interpolation, and
PLL and inverse sync off. Complex IF at 174.32 MHz is generated
at NCO of the AD9122 and fed into the ADL5375-05 through a
fifth order Butterworth filter. Special care must be taken not to
be affected by the noise power of images through proper DAC
setup at the selection of IF Frequency, FDATA, FDAC, and so on for
such a low IMD and noise level measurement. Be sure to load
clean LO signals and use equipment that allows enough
dynamic range capability and noise correction feature to
compensated the noise originated by equipment itself.
–73
–74
–75
–76
–77
–78
–79
–80
–81
–82
–83
–84
–22
–30
–28
–26
–24
OUTPUT POWER (1 CARRIER/100kHz) (dBm)
–104.0
–104.5
–105.0
–105.5
–106.0
–106.5
–107.0
–107.5
Figure 68. ADL5375-05 GSM/EDGE(8-PSK) 6 Carriers 6 MHz Offset Noise Floor
at 950 MHz vs Output Power(1 Carrier/100 KHz), LO Drive = 0 dBm
Figure 69. ADL5375-05 GSM/EDGE(8-PSK) 6 Carriers Adjacent and Alternate
Channel Power Performance at 950 MHz; Output Power(1 Carrier/100 KHz) =
−24.4 dBm LO Drive = 0 dBm
The performance of the ADL5375 in a GSM/EDGE environ-
ment is shown in Figure 70 and Figure 71.
Figure 70 illustrates the 6 MHz offset noise of the ADL5375-05
and ADL5375-15 vs. output power at 940 MHz. Figure 71
demonstrates how the 6 MHz offset noise is affected by variations
in LO drive level for both version of the ADL5375 at 940 MHz.
–99
–107
–106
–105
–104
–103
–102
–101
–100
0
–5
–4
–3
–2
–1
OUTPUT POWER (dBm)
ADL5375-15
ADL5375-05
Figure 70. GSM/Edge (8-PSK) 6 MHz Offset Noise at 940 MHz vs. Output
Power, LO Drive = 0 dBm


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn