IC-GD datasheet(25/55 Pages) ICHAUS

25 / 55 page

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iC-GD

UNIVERSAL I/O INTERFACE

Rev A1, Page 25/55

Name

Description

Default value

Digit

Interpretation/correction faktor

ATK

Bandgap temperature coef-

ficient

0x40

unsigned

1 LSB ≈ -0.6...-0.2 mV (non-linear)

AITKL,

AITKQ

Current measurement (lin-

ear, square) temperature

coefficients

0x00

unsigned

1 +

AITKL ∗ CHIP_TEMP

218

−

AITKQ ∗ CHIP_TEMP2

222

AOCT

Chip temperature offset

0b00000

signed (2 K)

1 LSB = 1 K

AOSZ

Oscillator offset,

left-aligned (i.e. 0xFE in

EEPROM)

0x7F

Bit 6 = sign

Bit 5:0 = value

1 +

AOSZ

, c1 = 192 for AOSZ ≥ 0

1 − AOSZ

, c2 = 180 for AOSZ < 0

AGVPx Positive voltage output

gain

0x100

unsigned

+ 0.5

+ AGVPx

= 19.2

AGVNx Negative voltage output

gain

0x100

unsigned

+ 0.5

+ AGVNx

= 19.2

AOIAx

Current output 4...20 mA

offset

0x80

unsigned

+ 0.5

+ AOIAx

= 15.5

AOV

Voltage output offset

(valid for CH_1 and CH_2)

0b000

unsigned

1 LSB = 1.28 mV

AGIAmx Current output gain,

for m see Tab. 14, minus

offset at 4...20 mA

0x80

unsigned

+ 0.5

+ AGIAmx

= 16.6

AGFnx

Voltage/current input gain,

for n see Tab. 15

0xDE7A

signed (2 K)

X = 1.5 +

AGFnx

215

∗

X′ + AOFnx

AOFnx

Voltage/current input off-

set,

for n see Tab. 15

0x0000

signed (2 K)

(see AGFnx)

Table 16: Description of EEPROM data

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