AD6650BBC Analog Devices Inc, AD6650BBC Datasheet - Page 43
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AD6650BBC
Manufacturer Part Number
AD6650BBC
Description
Manufacturer
Analog Devices Inc
Datasheet
1.AD6650BBC.pdf
(44 pages)
Specifications of AD6650BBC
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Operating Supply Voltage (typ)
3.3V
Lead Free Status / Rohs Status
Not Compliant
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0x22: Autocalibration Register [3:0]
Address 0x22 is the autocalibration register and controls the
automatic coarse dc autocalibration at start-up.
Bit 3
Reserved. This bit should be set to 0.
Bit 2
Reserved. This bit should be set to 1.
Bit 1
Determines whether to power down the VGA and mixer on a
coarse calibration. This should be set to 0 to allow the state
machine to power down the VGA and mixer. If it is known that
there is no dc input into the part, this can be set to 1 to improve
the correction performance, which allows more flexibility in
setting the lower threshold.
Rev. A | Page 43 of 44
Bit 0
Enables the autocalibration. This should be set to 1 for
the calibration to run automatically. Then the AD6650 waits
approximately 20.63 ms after a Soft_SYNC or Pin_SYNC
enables the part and then runs a coarse dc calibration. This
allows some warm-up time for the analog path to thermally
stabilize.
0x23 to 0x3F: Reserved
These registers must not be written.
0x40 to 0x6F: Coefficient Memory
This memory is utilized to store up to forty-eight 20-bit RCF
coefficients shared by Channel A and Channel B.
0x70 to 0xFF: Reserved
These registers must not be written.
AD6650