Analog Devices EVAL-ADMV4640, User Manual

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User Guide EVAL-ADMV4640
ADMV4640 BLOCK DIAGRAM AND FUNCTIONS
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The ADMV4640 block diagram user interface with labels is shown in Figure 7 , and Table 1 describes the functionality of each block.
Figure 7. ADMV4640 Block Diagram with Labels
Table 1. ADMV4640 Block Diagram Label Functions (See Figure 7 )
Label Function
A Click Apply Changes to apply all register values to the device. If Auto Apply is highlighted in the ADMV4640 Board tab, the Apply Changes feature
continuously runs every few seconds, and does not need to be clicked to apply or read back the block diagram settings.
B Click Read All to read back all SPI registers of the device.
C Click Rest Chip to reset the ADMV4640 chip.
D Click Diff to show registers that are different on the device.
E Click Software Defaults to load the software defaults on to the device, and then click Apply Changes .
F Click Memory Map Side-By-Side to open the memory map.
G1 Click the LNA Stage 1 Enable switch (represented by Label G1) to set the LNASTG1_BIAS_CONTROL bit (Bit 2, Register 0x100). When the LNA
Stage 1 Enable switch is highlighted, the LNASTG1_BIAS_CONTROL bit is enabled. When the LNA Stage 1 Enable switch is not highlighted, the
LNASTG1_BIAS_CONTROL bit is disabled.
G2 Click the LNA Stage 2 Enable switch (represented by Label G2) to set the LNASTG2_BIAS_CONTROL bit (Bit 3, Register 0x100). When the LNA
Stage 2 Enable switch is highlighted, the LNASTG2_BIAS_CONTROL bit is enabled. When the LNA Stage 2 Enable switch is not highlighted, the
LNASTG2_BIAS_CONTROL bit is disabled.
H Use the DSA scroll to choose a value, or enter a value in the text box to set the SEL_DSA_ATTEN bit (Bit[4:0], Register 0x300).
I Click the IF Amp Enable switch (represented by Label I) to set the AMPIF_BIAS_CONTROL bit (Bit 0, Register 0x100). When the IF Amp Enable switch is
highlighted, the AMPIF_BIAS_CONTROL bit is enabled. When the IF Amp Enable switch is not highlighted, the AMPIF_BIAS_CONTROL bit is disabled.
J Click the LO Amp Enable (represented by Label I) switch to set the AMPLO_BIAS_CONTROL bit (Bit 1, Register 0x100). When the LO Amp Enable switch is
highlighted, the AMPLO_BIAS_CONTROL bit is enabled. When the LO Amp Enable switch is not highlighted, the AMPLO_BIAS_CONTROL bit is disabled.
K Click Initialization & Optimization to initialize and lock the synthesizer.
L1 Enter a value in the VCO Frequency text box to set the VCO frequency. The INT value (Label L2) is calculated based on the VCO Frequency value.
Alternatively, change the INT value to calculate the VCO Frequency value.
L2 Use the INT scroll to choose a value, or enter a value in the text box to set the 16-bit integer value (Register 0x200, Register 0x201) of the PLL. The VCO
Frequency value is calculated based on the INT value. Alternatively, change the VCO Frequency value to calculate the INT value.