ADL5511ACPZ-R7 datasheet(22/29 Pages) AD

22 / 29 page

ADL5511

Data Sheet

Rev. C | Page 22 of 29

Figure 52. VENV Response to a 20 MHz LTE Carrier with a PEP of 19 dBm that

has been Triggered to Capture the Envelope’s Peak Level

VRMS AND VENV OUTPUT OFFSET

The 900 MHz RF power sweeps in Figure 53 and Figure 54

show distributions of the VRMS and VENV outputs voltages for

multiple devices at 25°C. The VRMS output response flattens

out at approximately −30 dBm while the various VENV response

traces begin to fanout unpredictably (Figure 4 and Figure 7 show

this behavior at other frequencies). While these plots suggest

that operation at input levels down to −30 dBm is feasible,

account must also be taken for variations over temperature.

Figure 10 to Figure 38 show how the linearity error starts to

increase below input levels of −20 dBm (the size of the error

varies between VENV and VRMS and with frequency).

Figure 53. VRMS Output vs. Input Level Distribution of 50 Devices,

900 MHz Frequency

Figure 54. VENV Output vs. Input Level Distribution of 50 Devices,

900 MHz Frequency

100

1000

10000

–40

–30

–20

–10

INPUT (dBm)

100

1000

10000

–40

–30

–20

–10

INPUT (dBm)

ADL5511ACPZ-R7 Datasheet(PDF) 22 Page - Analog Devices