Vicom Systems FC-FC3 Manual de usuario descargar pdf (Pagina 5)

CONFIDENTIAL [AK8999A/AW/AD]

MS1600-E-00 2014/05

- 5 -

2) Adjustment Accuracy

Adjustment accuracy targets are shown below.

2.1) The case of 1st order adjustment

Parameter Symbol Min.

Typ.

Note4)

Max.

Note5)

Units Description

Offset adjustment accuracy Cof 0.083 %FS

Offset temp. drift adjustment accuracy Coft 0.120 %FS

Output span adjustment accuracy Csn 0.146 %FS

Sensitivity temp. adjustment accuracy Csnt 0.114 %FS

Sensitivity supply voltage and

temp. variation step

Cstv 0.057 %FS

Sample and hold circuit output error Cshe 0.0 %FS

Offset adjustment accuracy

Note1)

Cofall 0.146 1.0 %FS

Span adjustment accuracy

Note2)

Csnall 0.194 1.0 %FS

Offset adjustment accuracy

Note3)

Call 0.194 1.0 %FS

Note1) Cofall = (Cof^2+Coft^2)^(1/2)

Note2) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2)

Note3) Call = max(Cofall,Csnall)

Note4) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or

Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective

(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)

Note5) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max.,

Each temp. coefficient = Min. to Max., VOUT output band-limited effective

(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)

2.2) The case of quasi 2nd order adjustment by piecewise linear approximation

Parameter Symbol Min.

Typ.

Note9)

Max.

Note10)

Units Description

Offset adjustment accuracy Cof 0.083 %FS

Offset temp. drift adjustment accuracy Coft 0.120 %FS

Offset temp. drift adjustment switching

accuracy using the piecewise linear

approximation method

Coftc 0.0 %FS

Output span adjustment accuracy Csn 0.146 %FS

Sensitivity temp. adjustment accuracy Csnt 0.114 %FS

Sensitivity temp. adjustment switching

accuracy using the piecewise linear

approximation method

Csntc 0.0 %FS

Sensitivity supply voltage and

temp. variation step

Cstv 0.057 %FS

Sample and hold circuit output error Cshe 0.0 %FS

Offset adjustment accuracy

Note6)

Cofall 0.146 1.0 %FS

Span adjustment accuracy

Note7)

Csnall 0.194 1.0 %FS

Offset adjustment accuracy

Note8)

Call 0.194 1.0 %FS

Note6) Cofall = (Cof^2+Coft^2)^(1/2)

Note7) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2)

Note8) Call = max(Cofall,Csnall)

Note9) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or

Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective

(≤ 500Hz@Fs = 8.33kHz, ≤50Hz@Fs=0.83kHz)

Note10) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max.,

Each temp. coefficient = Min. to Max., VOUT output band-limited effective

(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)

* The adjustment accuracy is based on our definition. Please be careful the accuracy of product depends on the

sensor characteristics and adjustment method.

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