TMP007 Datasheet, PDF (32/55 Pages) Texas Instruments – TMP007 Infrared Thermopile Sensor with Integrated Math Engine

TMP007
SBOS685C – APRIL 2014 – REVISED JULY 2015
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7.5.11 Coefficient Registers
The values of the coefficient registers described above are used in the math engine. The range and resolution of
the coefficients are shown in Table 9. The default coefficients, TC0 and TC1, are optimized for the default
conversion mode (four averages per measurement). Different acquisition modes may require different values for
the TC0 and TC1 coefficients.
Table 9. Coefficient Range and Resolution⁽¹⁾
REGISTER
ADDRESS
0A
0B
0C
0D
0E
0F
10
11
12
VARIABLE
S0
A1
A2
B0
B1
B2
C2
TC0
TC1
BITS
16
16
16
16
16
16
12
16
16
RANGE
0 – 298E-15
±125E-3
±1.9E-3
±5.12E-3
±20E-6
±312E-9
±97.65
±163E-3
±1024
RESOLUTION
LSB = 4.5475E-18
LSB = 3.8150E-06
LSB = 5.9600E-08
LSB = 1.5625E-07
LSB = 6.1035E-10
LSB = 9.5367E-12
LSB = 4.7680E-02
LSB = 5.0000E-06
LSB = 3.1250E-02
DEFAULT VALUES
4.430E-14
9.995E-04
–6.020E-06
–3.094E-05
–8.728E-08
1.300E-08
0
2.600E-04
0
(1) All signed values are twos complement data.
HEX DEFAULT
VALUES
0260Eh
0106h
FF9Bh
FF3Ah
FF71h
0553h
0000h
0034h
0000h
7.5.11.1 S0 Coefficient Register (address = 0Ah) [reset = 260Eh]
Figure 40. S0 Coefficient Register
15
14
13
12
11
10
9
8
S0_15 S0_14 S0_13 S0_12 S0_11 S0_10 S0_9 S0_8
R/W-0 R/W-0 R/W-1 R/W-0 R/W-0 R/W-1 R/W-1 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
7
S0_7
R/W-0
6
S0_6
R/W-0
5
S0_5
R/W-0
4
S0_4
R/W-0
3
S0_3
R/W-1
2
S0_2
R/W-1
1
S0_1
R/W-1
0
S0_0
R/W-0
S0_15 to S0_0:
S0 Coefficient Value. Bits 15 to 0.
Range and resolution given in Table 9
7.5.11.2 A1 Coefficient Register (address = 0Bh) [reset = 0106h]
Figure 41. A1 Coefficient Register
15
14
13
12
11
10
9
8
A1_15 A1_14 A1_13 A1_12 A1_11 A1_10 A1_9 A1_8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
7
A1_7
R/W-0
6
A1_6
R/W-0
5
A1_5
R/W-0
4
A1_4
R/W-0
3
A1_3
R/W-0
2
A1_2
R/W-1
1
A1_1
R/W-1
0
A1_0
R/W-0
A1_15 to A1_0: A1 Coefficient Value. Bits 15 to 0.
Twos complement format. Range and resolution given in Table 9
7.5.11.3 A2 Coefficient Register (address = 0Ch) [reset = FF9Bh]
Figure 42. A2 Coefficient Register
15
14
13
12
11
10
9
8
A2_15 A2_14 A2_13 A2_12 A2_11 A2_10 A2_9 A2_8
R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
7
A2_7
R/W-1
6
A2_6
R/W-0
5
A2_5
R/W-0
4
A2_4
R/W-1
3
A2_3
R/W-1
2
A2_2
R/W-0
1
A2_1
R/W-1
0
A2_0
R/W-1
A2_15 to A2_0: A2 Coefficient Value. Bits 15 to 0
Twos complement format. Range and resolution given in Table 9
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