AD9963 datasheet(34/60 Pages) AD

34 / 60 page

AD9961/AD9963

Rev. 0 | Page 34 of 60

Address

Bit(s)

Parameter

Function

Rx ADC Trim Ctrl

0x7E

Unused

RXTrim_EN

1: enables ADC gain calibration.

RXTrim_Fine

1: decreases the step size (increases resolution) of the gain calibration

adjustment.

AUXCML_EN

Controls the buffers of internal bias points within each of the Rx ADCs to

allow for checking of this voltage. These voltages should read back about

0.9 V.

0: disables the buffers.

1: enables the buffers.

3:1

Set to 000.

RX_DC

0: the ADC common-mode buffer is active. This sets the ADC inputs to

the desired common-mode voltage through 10 kΩ resistors to each

single sided input.

1: disables the common-mode buffer. The buffer should be disabled

whenever the user DC couples to the ADC inputs.

IGAIN CAL MSBs

0x7F

7:0

RXI_Trim[9:2]

The RXI_Trim[9:0] word is used to adjust the gain of the receive path I

ADC. These bits have no effect unless the RXTrim_EN bit is set. The

RXTrim_Fine bit reduces the LSB size of the calibration word by ½.

IGAIN CAL LSBS

0x80

7:3

Unused

2:1

RXI_Trim[1:0]

GAINCAL_ENI

1: enables the gain calibration DAC for the I Rx ADC.

IGAIN CAL MSBs

0x81

7:0

RXQ_Trim[9:2]

The RXQ_Trim[9:0] word is used to adjust the gain of the receive path Q

ADC. These bits have no effect unless the RXTrim_EN bit is set. The

RXTrim_Fine bit reduces the LSB size of the calibration word by ½.

IGAIN CAL LSBs

0x82

7:3

Unused

2:1

RXQ_Trim[1:0]

Bottom two LSBs of RXQ_Trim described in Register 0x81 above.

GAINCAL_ENQ

1: enables the gain calibration DAC for the Q Rx ADC.

IGAIN CAL LSBS

0xFF

7:1

Unused

Update

Synchronously transfers ADC configuration data from the global register

set to the local ADC register set and activates the changes. A 0-to-1

transition is required to initiate the transfer.

1: transfer ADC parameters to ADC to make changes active.

AD9963 Datasheet(PDF) 34 Page - Analog Devices

AD9963 Datasheet(HTML) 34 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

Datasheet Download

Link URL