ADRF6750 Analog Devices, Inc., ADRF6750 Datasheet - Page 26

• Manufacturer Part Number: ADRF6750
• Description: 950 Mhz To 1575 Mhz Quadrature Modulator With Integrated Fractional-n Pll And Vco
• Manufacturer: Analog Devices, Inc.

ADRF6750
VCO Autocalibration
The VCO uses an autocalibration technique to select the correct
VCO and band, as explained in the Voltage-Controlled Oscillator
(VCO) section. Register CR24, Bit 0, controls whether the auto-
calibration is enabled. For normal operation, autocalibration needs
to be enabled. However, if using cumulative frequency steps of
100 kHz or less, autocalibration can be disabled by setting this
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bit to 1 and then a new acquisition is initiated by writing to
Register CR0.
Attenuator
The attenuator can be programmed from 0 dB to 47 dB in steps
of 1 dB. Control is through Register CR30, Bits[5:0].
Revision Readback
The revision of the silicon die can be read back via Register CR33.