MAX1452_10 Datasheet, PDF (17/25 Pages) Maxim Integrated Products – Low-Cost Precision Sensor Signal Conditioner

Low-Cost Precision Sensor
Signal Conditioner
Table 3. Configuration Register (CONFIG[15:0])
FIELD
15:13
12
11
10
9
8:6
5:2
1
0
NAME
OSC[2:0]
R_EXT
CLK1M EN
PGA Sign
IRO Sign
IRO[2:0]
PGA[3:0]
ODAC Sign
OTCDAC
Sign
DESCRIPTION
Oscillator frequency setting. Factory preset, do not change.
Logic ‘1’ selects external R_ISRC and R_STC.
Logic ‘1’ enables CLK1M output driver.
Logic ‘1’ inverts INM and INP polarity.
Logic ‘1’ for positive input referred offset (IRO). Logic ‘0’ for negative input referred offset (IRO).
Input referred coarse offset adjustment.
Programmable gain amplifier setting.
Logic ‘1’ for positive offset DAC output. Logic ‘0’ for negative offset DAC output.
Logic ‘1’ for positive offset TC DAC output. Logic ‘0’ for negative offset TC DAC output.
Table 4. Input Referred Offset (IRO[2:0])
IRO SIGN, IRO[2:0]
INPUT REFERRED OFFSET
CORRECTION AS % OF VDD
1,111
1,110
1,101
1,100
1,011
1,010
1,001
1,000
0,000
0,001
0,010
0,011
0,100
0,101
0,110
0,111
+1.25
+1.08
+0.90
+0.72
+0.54
+0.36
+0.18
0
0
-0.18
-0.36
-0.54
-0.72
-0.90
-1.08
-1.25
INPUT REFERRED OFFSET, CORRECTION
AT VDD = 5VDC IN mV
+63
+54
+45
+36
+27
+18
+9
0
0
-9
-18
-27
-36
-45
-54
-63
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