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Basic Test Procedure
R e f
- 1 5 . 8 d B m
- 2 0
O f f s e t
- 3 0
- 4 0
1 R M
*
- 5 0
C L R W R
- 6 0
- 7 0
- 8 0
- 9 0
- 1 0 0
- 1 1 0
C e n t e r
2 . 1 5 G H z
T x C h a n n e l
B a n d w i d t h
A d j a c e n t C h a n n e l
B a n d w i d t h
S p a c i n g
A l t e r n a t e C h a n n e l
B a n d w i d t h
S p a c i n g
Figure 7. WCDMA ACPR: LO = 2120 MHz, DAC Clk = 614.4 MHz, 2× Interpolation, 30-MHz Offset
R e f
- 1 5 . 8 d B m
- 2 0
O f f s e t
- 3 0
- 4 0
1 R M
*
- 5 0
C L R W R
- 6 0
- 7 0
- 8 0
- 9 0
- 1 0 0
- 1 1 0
C e n t e r
2 . 1 5 G H z
T x C h a n n e l
B a n d w i d t h
A d j a c e n t C h a n n e l
B a n d w i d t h
S p a c i n g
A l t e r n a t e C h a n n e l
B a n d w i d t h
S p a c i n g
Figure 8. WCDMA ACPR: LO = 1966.4 MHz, DAC Clk = 614.4 MHz, 2× Interpolation, f
Note that there are some part-to-part performance variations that can yield significantly improved two-tone
IP3 or ACPR performance. The performance plots in this document show conservative typical responses.
8
DAC3282
A t t
5 d B
*
0 . 5 d B
2 . 5 5 M H z /
3 . 8 4 M H z
3 . 8 4 M H z
5 M H z
3 . 8 4 M H z
1 0 M H z
*
A t t
5 d B
0 . 5 d B
2 . 5 5 M H z /
3 . 8 4 M H z
3 . 8 4 M H z
5 M H z
3 . 8 4 M H z
1 0 M H z
30-MHz Offset
Copyright © 2010, Texas Instruments Incorporated
R B W
3 0 k H z
*
*
V B W
3 0 0 k H z
S W T
2 s
*
W - C D M A 3 G P P F W D
P o we r
-1 0 . 7 5 d Bm
L o we r
-7 3 . 9 6 d B
U p pe r
-7 4 . 2 7 d B
L o we r
-7 8 . 7 9 d B
U p pe r
-7 9 . 2 2 d B
*
R B W
3 0 k H z
*
V B W
3 0 0 k H z
*
S W T
2 s
W - C D M A 3 G P P F W D
P o we r
-1 1 . 1 5 d Bm
L o we r
-7 2 . 3 1 d B
U p pe r
-7 2 . 3 6 d B
L o we r
-7 6 . 2 5 d B
U p pe r
-7 6 . 6 1 d B
SLAU304C – February 2010 – Revised November 2010
www.ti.com
A
L V L
N O R
S p a n
2 5 . 5 M H z
A
L V L
N O R
S p a n
2 5 . 5 M H z
/4 mixing,
S
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