Dac348X Transformer Coupled Output At 60Mhz If; Dac348X Transformer Coupled Output At 30Mhz If - Texas Instruments DAC348 Series User Manual

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Ref -15.6 dBm
-20
-30
-40
1 RM * -50
CLRWR
-60
-70
-80
-90
-100
-110
Center
Tx Cha nne l
Ban dwi dth
Adj ace nt Cha nne l
Ban dwi dth
Spa cin g
Alt ern ate Ch ann el
Ban dwi dth
Spa cin g
(baseband = 30MHz, NCO = 30MHz with NCO Gain disabled, QMC Gain = 1446)
Figure 13. DAC348x Transformer Coupled Output at 60MHz IF
Ref -12.3 dBm
-20
-30
-40
1 RM *
-50
CLRWR
-60
-70
-80
-90
-100
-110
Center
Tx Cha nne l
Ban dwi dth
Adj ace nt Cha nne l
Ban dwi dth
Spa cin g
Alt ern ate Ch ann el
Ban dwi dth
Spa cin g
(baseband = 30MHz, NCO disabled, QMC Gain = 1024)
Figure 14. DAC348x Transformer Coupled Output at 30MHz IF
SLAU432 – February 2012
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Att 5 dB
*
PO S - 15. 587 dB m
60 MHz
3. 84 MHz
3. 84 MHz
5 MHz
3. 84 MHz
10 MHz
Att 10 dB
*
PO S - 12. 321 dB m
30 MHz
3. 84 MHz
3. 84 MHz
5 MHz
3. 84 MHz
10 MHz
Copyright © 2012, Texas Instruments Incorporated
* RBW 30 kHz
* VBW 300 kHz
SWT 2 s
*
2.55 MHz/
W-C DMA 3G PP FWD
P o w e r - 1 0 . 5 8
L o w e r - 7 8 . 1 6
U p p e r - 7 6 . 1 4
L o w e r - 8 4 . 3 1
U p p e r - 8 3 . 3 7
* RBW 30 kHz
* VBW 300 kHz
SWT 2 s
*
2.55 MHz/
W-C DMA 3G PP FWD
P o w e r - 7 . 5 2
L o w e r - 7 8 . 9 5
U p p e r - 7 8 . 0 4
L o w e r - 8 4 . 0 6
U p p e r - 8 2 . 9 7
Basic Test Procedure with TSW1400
B
NOR
Span 25.5 MHz
d B m
d B
d B
d B
d B
B
NOR
Span 25.5 MHz
d B m
d B
d B
d B
d B
DAC348x EVM
15