ADL5536

Data Sheet

Rev. B | Page 12 of 14

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). 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 instru-

ment noise-correction function. At an output power level of

+8 dBm, ACPR is still very low at −65 dBc, making the device

suitable for use in driver applications.

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380MHz

190MHz

190MHz SOURCE POWER

OUTPUT REFERRED

380MHz SOURCE POWER

OUTPUT REFERRED

at 190 MHz and 380 MHz

ERROR VECTOR MAGNITUDE (EVM) PERFORMANCE

EVM is a measure used to quantify the performance of a digital

radio transmitter or receiver. A signal received by a receiver has

all constellation points at their ideal locations; however, various

imperfections in the implementation (such as magnitude

imbalance, noise floor, and phase imbalance) cause the actual

constellation points to deviate from their ideal locations. The

ADL5536 shows excellent performance when used with higher-

order modulation schemes, such as a 16 QAM. Figure 19

illustrates the EVM performance of the ADL5536 when driven

with a 16 QAM 10 Msym/s signal. Degradation of the EVM

performance starts to occur at an output power of +12 dBm.

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380MHz

190MHz

190MHz SOURCE POWER

OUTPUT REFERRED

380MHz SOURCE POWER

OUTPUT REFERRED