EVB90308 Melexis Inc, EVB90308 Datasheet - Page 12

• Manufacturer Part Number: EVB90308
• Description: DEMO KIT MLX90308 SENS INTERFACE
• Manufacturer: Melexis Inc

Specifications of EVB90308

• Rohs Status: RoHS non-compliant
• Main Purpose: Interface, Sensor to ADC Interface, Programmable
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MLX90308
• Primary Attributes: MCU Controlled Signal Conditioning for Bridge-Type Sensors
• Secondary Attributes: GUI, Output Types: Absolute Voltage, Ratiometric Voltage, Current Output Mode
• Other names: DK90308; DK90308

Compensation Trade-Offs
A compromise must be made between temperature
compensation and pressure correction. The EEPROM
space where the signal coefficients are stored is
shared with the temperature coefficients, with the
result that an EEPROM byte can be used either for a
temperature coefficient or for a signal coefficient, but
not both. Table 6 presents the possibilities among the
maximum number of temperature gaps and the
maximum number of signal gaps.
3901090308
Rev 006
# of Pressure Gaps
Table 4. PNB_TNB Bit Definition;
Fixed
1
2
3
4
5
Pressure Gaps
4MSB of PNB_TNB Value
14 (E hex)
12 (C hex)
10 (A hex)
15 (F hex)
8
6
Page 12
# of Temperature Gaps
Programmable Sensor Interface
Maximum number of
Table 5. PNB_TNB Bit Definition;
temperature gaps
Fixed (1)
2 Gaps
3 Gaps
4 Gaps
0
Output
PC1
Linearity Correction
Temperature Gaps
Table 6. Temperature
& Signal Limitations
P2
Figure 4. Signal
PC2
P3
PC3
P4
PC4
4 LSB of PNB_TNB
Maximum number of
P5
MLX90308
MLX90308
PC5
signal gaps
11 (B hex)
0
5
8
Apr/04