Filter
Top Products
7.3.4 CALIBRATION REGISTER
As mentioned before, direct register level programming should be attempted only by extremely experienced register
level programmers. This is true for register-level calibration. If you’re not sure, don’t attempt it. Call Technical
Support for more information.
BADR1 + 6
This register controls all autocal operations. This is a Write-only register.
WRITE
--------
SEL8800SEL7376-CSRC0CSRC1CSRC2CALENSDI
0123456789101112131415
SEL8800
This bit enables the 8-bit trim DACs for the following circuits:
ADC
Fine Offset
7
ADC
Coarse
Offset
6
DAC1
Coarse Gain
5
DAC1
Fine Gain
4
DAC1
Offset
3
DAC0
Offset
2
DAC0
Coarse Gain
1
DAC0
Fine Gain
0
Cal Function DAC Channel
SEL7376
This bit latches the 7-bit serial data stream into the AD7376 digital potentiometer
(10KOhm). The AD7376 is used for analog front-end gain calibration.
CSRC[2:0]
These bits select the different calibration sources available to the ADC front end.
VDAC1111
VDAC0011
8.6mV101
0.875V001
1.75V110
3.5V010
7.0V100
AGND000
Cal SourceCSRC0CSRC1CSRC2
25