ADL5602

Rev. 0 | Page 12 of 16

W-CDMA ACPR PERFORMANCE

Figure 17 shows a plot of adjacent channel power ratio (ACPR)

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, which

incorporates an instrument noise correction function.

The ADL5602 achieves an ACPR of −75 dBc at −5 dBm output,

at which point device noise and not distortion is beginning to

dominate the power in the adjacent channels. At an output

power of +5 dBm, ACPR is still very low at −61 dBc, making

the device particularly suitable for PA driver applications.

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2140 MHz Evaluation Board