Low-Cost Precision Sensor

Signal Conditioner

18

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Table 7. EEPROM ODAC and FSODAC Lookup Table Memory Map

TEMP-INDEX[7:0]

EEPROM ADDRESS ODAC

LOW BYTE AND HIGH BYTE

EEPROM ADDRESS FSODAC

LOW BYTE AND HIGH BYTE

00hex

to

7Fhex

000hex and 001hex

to

0FEhex and 0FFhex

200hex and 201hex

to

2FEhex and 2FFhex

80hex

to

AFhex

100hex and 101hex

to

15Ehex and 15Fhex

1A0hex and 1A1hex

to

1FEhex and 1FFhex

Table 5. PGA Gain Setting (PGA[3:0])

PGA[3:0]

PGA GAIN (V/V)

0000

39

0001

52

0010

65

0011

78

0100

91

0101

104

0110

117

0111

130

1000

143

1001

156

1010

169

1011

182

1100

195

1101

208

1110

221

1111

234

Table 6. Temp-Index Typical Values

TEMP-INDEX[7:0]

TEMPERATURE

(°C)

DECIMAL

HEXADECIMAL

-40

20

14

25

65

41

85

106

6A

125

134

86