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ADP1043A View Datasheet(PDF) - Analog Devices

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ADP1043A Datasheet PDF : 72 Pages
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ADP1043A
Table 49. Register 0x35—Line Impedance Limit
Bits
Name
R/W Description
[7:0]
Line impedance
limit
R/W
This value sets the threshold at which the line impedance flag is enabled. This 8-bit value is
compared with the line impedance value (Register 0x1F). If the line impedance value exceeds
this value, the line impedance flag is set (Register 0x02, Bit 2).
Table 50. Register 0x36—Load Line Impedance
Bits
Name
R/W Description
[7:4]
Reserved
R/W Reserved.
3
Enable
R/W Set this bit to enable the load line.
[2:0]
Load line
R/W This value specifies how much the output voltage decreases from nominal at full load.
Bit 2 Bit 1 Bit 0 Impedance Setting
Equivalent Load Line (mΩ)
0
0
0
Setting 7
51.5
0
0
1
Setting 6
26
0
1
0
Setting 5
12.5
0
1
1
Setting 4
6.25
1
0
0
Setting 3
3
1
0
1
Setting 2
1.5
1
1
0
Setting 1
0.7
1
1
1
Setting 0
0
Table 51. Register 0x38—VS1 Trim
Bits
Name
R/W
7
Trim polarity
R/W
[6:0]
VS1 trim
R/W
Description
1 = negative gain is introduced.
0 = positive gain is introduced.
These bits set the amount of gain trim that is applied to the VS1 ADC reading. This register trims
the voltage at the VS1 pin for external resistor tolerances. When there is 1 V on the VS1 pin, this
register is trimmed until the VS1 voltage value register (Register 0x15) reads 2643 (0xA53).
Table 52. Register 0x39—VS2 Trim
Bits
Name
R/W
7
Trim polarity
R/W
[6:0]
VS2 trim
R/W
Description
1 = negative gain is introduced.
0 = positive gain is introduced.
These bits set the amount of gain trim that is applied to the VS2 ADC reading. This register trims
the voltage at the VS2 pin for external resistor tolerances. When there is 1 V on the VS2 pin, this
register is trimmed until the VS2 voltage value register (Register 0x16) reads 2643 (0xA53).
Table 53. Register 0x3A—VS3 Trim
Bits
Name
R/W
7
Trim polarity
R/W
[6:0]
VS3 trim
R/W
Description
1 = negative gain is introduced.
0 = positive gain is introduced.
These bits set the amount of gain trim that is applied to the VS3 ADC reading. This register trims
the voltage at the VS3 pins for external resistor tolerances. When there is 1 V on each VS3 pin,
this register is trimmed until the VS3 voltage value register (Register 0x17) reads 2643 (0xA53).
The VS3 trim must be performed before the load OVP and load UVP trims are performed.
Rev. 0 | Page 48 of 72
 

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