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LTC2000

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OPERATION

Table 7. Dynamic Linearization SPI Registers

ADDRESS

BIT

NAME

DESCRIPTION

0x07

LIN_DIS

Dynamic Linearization Disable. Disabled when LIN_DIS = 1.

[3:1]

LIN_GN

Dynamic Linearization Gain Select. Changing LIN_GN varies the amount of 3rd order harmonic correction applied to the

DAC output. LIN_GN = 000 is normally optimal.

LIN_GN

LINEARIZATION PERCENTAGE

110

50%

111

63%

000

75% (default)

001

88%

010

100%

011

113%

100

125%

101

138%

0x08

[3:0]

LIN_VMX Dynamic Linearization Max IOUTP/N Voltage Select. For optimal 3rd order harmonic performance, set LIN_VMX to

correspond to the maximum voltage expected at IOUTP/N. Reset state is LIN_VMX = 1000, which corresponds to 0.51V.

LIN_VMX must be greater than LN_VMN.

[7:4]

LIN_VMN Dynamic Linearization Min IOUTP/N Voltage Select. For optimal 3rd order harmonic performance, set LIN_VMN to

correspond to the minimum voltage expected at IOUTP/N. Reset state is LIN_VMN = 0000, which corresponds to 0.0V.

LIN_VMN must be less than LN_VMX.

LIN_VMX/N

MAX/MIN VOLTAGE EXPECTED AT IOUTP/N

0000

0.00V (Default for LIN_VMN)

0001

0.16V

0010

0.19V

0011

0.22V

0100

0.25V

0101

0.31V

0110

0.38V

0111

0.44V

1000

0.51V (Default for LIN_VMX)

1001

0.63V

1010

0.75V

1011

0.87V

1100

1.00V

Note: Register 0x07 resets to 0x00 (default). Register 0x08 resets to 0x08 (default).

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