ADRF6518ACPZ-R7 datasheet(33/39 Pages) AD

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Data Sheet

ADRF6518

Rev. A | Page 33 of 39

EVALUATION BOARD

An evaluation board is available for testing the ADRF6518.

EVALUATION BOARD CONTROL SOFTWARE

The ADRF6518 evaluation board is controlled through the USB

port on a PC. This software enables/disables the dc offset

compensation loop and controls the filter corner frequency, the

high and low power modes, and the minimum and maximum

gains for each amplifier in the ADRF6518. For information

about the register map, see Table 5. For information about SPI

port timing and control, see Figure 2 and Figure 3.

After the software is downloaded and installed, start the basic

user interface to program the filter corner and gain values (see

Figure 89).

To program the filter corner, perform one of the following:



Click the arrow in the Frequency Corner MHz section of

the window, select the desired corner frequency from the

menu, and click Write Selected Cutoff Frequency to

Device



Click Frequency +1 MHz or Frequency −1 MHz to

increment or decrement the frequency corner in 1 MHz

steps from the current frequency corner.

To program the filter mode, offset correction, and power mode,

move the respective slider switch in the upper right corner of

the window.

To program the maximum gains of VGA1, VGA2, VGA3, and

the postamplifier, click the VGA1 Gain dB, VGA2 Gain dB,

VGA3 Gain dB

, and Post Amp Gain dB drop-down boxes and

select the desired gain.



The VGA1 maximum gain can be set to 9 dB, 12 dB, or

15 dB.



The VGA2 and VGA3 maximum gain can be set to 12 dB,

15 dB, 18 dB, or 21 dB.



The postamplifier maximum gain can be set to 3 dB or 9 dB.

When the user clicks the Write Selected Cutoff Frequency to

Device

button, a write operation is executed, immediately

followed by a read operation. The updated information is

displayed in the VGA1 Gain dB, Filter Corner MHz, VGA2

Gain dB

, VGA3 Gain dB, and Post Amp Gain dB fields.

Figure 89. Analog Devices ADRF6518 Evaluation Software

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