Data Sheet

ADL5601

Rev. A | Page 13 of 16

W-CDMA ACPR PERFORMANCE

Figure 18 shows a plot of the adjacent channel power ratio

single wideband code division multiple access (W-CDMA)

carrier (Test Model 1, 64) at 2140 MHz. This signal is generated

by a very low ACPR source. ACPR is measured at the output by

a high dynamic range spectrum analyzer that incorporates an

instrument noise-correction function.

The ADL5601 achieves an ACPR of −69 dBc at −5 dBm output,

at which point device noise, rather than distortion, begins to

dominate the power in the adjacent channels. At an output

power of +5 dBm, ACPR is still very low at −56 dBc, making

the device particularly suitable for power amplifier (PA) driver

applications.

–75

–70

–65

–60

–55

–50

–45

–40

–20

–15

–10

–5

0

5

10

at 2140 MHz