参数资料
型号: PGA309EVM
厂商: Texas Instruments, Inc.
英文描述: PGA309 Evaluation Module(PGA309评估模块)
中文描述: PGA309评估模块(PGA309评估模块)
文件页数: 44/53页
文件大小: 4221K
代理商: PGA309EVM
Page 44 of 53
F) Verify and correct the parameter values in the light-blue cells on the “Sensor Curvefit” Worksheet.
(Figure 39).
Figure 39: Top Part of the “Curvefit” Worksheet
3) On the “Sensor Curvefit” Worksheet, highlight the cell C18 (ADC read @ Tmeas1) and click the button
“Insert Temp ADC Reading” (Figure 40).
Figure 40: Entering the Values for Tmeas1 and Vout @ Tmeas1
4)
For the example shown, highlight the cell C25 (VoutMeas @ Pmin, Tmeas1) and click the button Insert
“Vout Reading” or enter the measured voltage by hand (Figure 40). The example shown is for three pressures
three temperature calibration. Other calibrations are done in a similar manner, but the number of readings
required and the cells used will differ.
Fill out the highlighted cells
Pressure values:
Pmin=
Pmax=
PGA309 non-variable (during calibration) settings:
Initial settings of the Fain Adjust DACs:
GainDAC1=
7FBD hex, ==>>
ZeroDAC1=
13C0 hex, ==>>
Alternative settings of Gain and ZeroDACs
GainDAC2=
ZeroDAC2=
0
Vref=
Kexc=
Gfront=
Gback=
VosRti=
Vexc=
4.096 V
0.830 V/V
16 V/V
2 V/V
-6.55E-03 V
3.400 V, with LinDAC=0
0.6660 V/V
0.3160 V
100
Temp range:
Tmin=
Tmax=
Troom=
0 hex, ==>>
0 hex, ==>>
0.3333 V/V
0.0000 V
-50
150
27
6.0E-02
Insert TempADC reading in active cell
Insert Vout reading in active cell
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