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ADRF6602 датащи(PDF) 21 Page - Analog Devices

номер детали ADRF6602
подробное описание детали  1200 MHz to 3600 MHz Rx Mixer with Integrated Fractional-N PLL and VCO
PDF  32 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADRF6602 датащи(HTML) 21 Page - Analog Devices

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Data Sheet
ADRF6604
Rev. B | Page 21 of 32
LO SELECTION LOGIC
The downconverting mixer in the ADRF6604 can be used
without the internal PLL by applying an external differential LO
to Pin 37 (LON) and Pin 38 (LOP). In addition, when using an
LO generated by the internal PLL, the LO signal can be accessed
directly at these pins. This function can be used for debugging
purposes, or the internally generated LO can be used as the LO
for a separate mixer.
The operation of the LO generation and whether LOP and LON
are inputs or outputs are determined by the logic levels applied
at Pin 16 (PLL_EN) and Pin 36 (LODRV_EN), as well as Bit DB3
(LDRV) and Bit DB6 (PLEN) in Register 5. The combination of
externally applied logic and internal bits required for particular
LO functions is given in Table 9.
Table 9. LO Selection Logic
Pins1
Register 5 Bits1
Outputs
Pin 16 (PLL_EN)
Pin 36 (LODRV_EN)
Bit DB6 (PLEN)
Bit DB3 (LDRV)
Output Buffer
LO
0
X
0
X
Disabled
External
0
X
1
X
Disabled
External
1
X
0
X
Disabled
External
1
0
1
0
Disabled
Internal
1
X
1
1
Enabled
Internal
1
1
1
X
Enabled
Internal
1
X = don’t care.



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