Analog Devices ADRV9001 User Manual page 151

Reference Manual
TRANSMITTER/RECEIVER/OBSERVATION RECEIVER SIGNAL CHAIN CALIBRATIONS
Table 62. Initial Calibration Mask Bit Assignments (Continued)
Bits Corresponding Enum
D7 ADI_ADRV9001_INIT_CAL_TX_DAC
D8 ADI_ADRV9001_INIT_CAL_TX_PATH_DELAY
D9 ADI_ADRV9001_INIT_CAL_RX_HPADC_RC
D10 ADI_ADRV9001_INIT_CAL_RX_HPADC_FLASH
D11 ADI_ADRV9001_INIT_CAL_RX_HPADC_DAC
D12 ADI_ADRV9001_INIT_CAL_RX_DCC
D13 ADI_ADRV9001_INIT_CAL_RX_LPADC
D14 ADI_ADRV9001_INIT_CAL_RX_TIA_CUTOFF
D15 ADI_ADRV9001_INIT_CAL_RX_GROUP_DELAY
D16 ADI_ADRV9001_INIT_CAL_RX_QEC_TCAL
D17 ADI_ADRV9001_INIT_CAL_RX_QEC_FIC
D18 ADI_ADRV9001_INIT_CAL_RX_QEC_ILB_LO_DELAY
D19 ADI_ADRV9001_INIT_CAL_RX_RF_DC_OFFSET
D20 ADI_ADRV9001_INIT_CAL_RX_GAIN_PATH_DELAY
D21 ADI_ADRV9001_INIT_CAL_RX_DMR_PATH_DELAY
analog.com
Calibration Description
profiles, gain indices and frequency regions, and so on. Perform the
calibration only on a single channel.
Tx DAC Initial Calibrates the DAC for the required profile bandwidth.
Calibration
Transmitter Path Estimates the delay between the transmitter input and Tx output.
Delay Initial
Calibration
Receiver HP ADC Determines how much the unit R and C vary from the ideal and then
RC tunes the HP ADC's programmable Rs and Cs to obtain the desired
Initial Calibration values. Without this calibration, the HP ADC's noise performance is
negatively impacted. The HP ADC becomes unstable. It is not used
when only LP ADC is used.
Optimizes the HP ADC output noise by correcting comparator offsets in
Receiver HP ADC
the backend flash. It is not used when only LP ADC is used.
Flash Offset Initial
Calibration
Corrects for element mismatch HP ADC current. It is not used when
Receiver HP ADC
only LP ADC is used. This is disabled by default – uncalibrated
DAC Initial Calibra-
performance sufficient.
tion
Corrects the 50% duty cycle for external LO when the divisor is 2.
Receiver HP ADC
Stability Initial Cali-
bration
Calibrates the LP ADC. The major purpose of using the LP ADC instead
Receiver LP ADC
of the HP ADC is to reduce power consumption. It is not used when only
Initial Calibration
HP ADC is used.
Receiver TIA Cutoff Tunes the 3 dB cut-off frequency of the TIA filter.
Initial Calibration
Receiver TIA Fine Compensates the mismatch in 3 dB cut-off frequency between I and Q
Initial Calibration path. Corrects quadrature error in the analog domain, which simplifies
the correction in the digital domain.
Receiver Tone Initial Performs an initial QEC calibration in wideband systems for frequency
Calibration dependent quadrature errors. Also used for narrowband systems to
improve receiver QEC performance, especially when the LO frequency
is greater than 3.2 GHz.
Receiver Frequency Performs an initial QEC calibration for frequency independent errors for
Independent Error both narrowband and wideband systems.
Initial Calibration
Adjusts the analog delay between the inphase and quadrature LO
Receiver ILB LO
components at the mixer on the internal loopback path. This is not
Delay Initial Calibra-
enabled currently.
tion
Mitigates the RFDC offset added due to LO self-mixing.
Receiver RFDC
Offset Initial Calibra-
tion
Receiver Gain Path
Calculates the path delay between the receiver analog and digital at-
Delay Initial
tenuation blocks. This delay is then used to offset the onset of receiver
Calibration
analog and digital attenuations relative to each other to compensate for
the path delay between these blocks. It is independent of gain index and
frequency region. Perform the calibration only on a single channel.
Receiver DMR Path Measures the delay from the internal FIFO to sync detection time
Delay Initial needed in the DMR and P25 monitor modes.
Calibration
ADRV9001
Rev. 0 | 151 of 351