MAX1452_09 Datasheet, PDF (4/25 Pages) Maxim Integrated Products – Low-Cost Precision Sensor Signal Conditioner

Low-Cost Precision Sensor
Signal Conditioner
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = V_DDF = +5V, V_SS = 0V, T_A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Current-Source Reference
Resistor Temperature Coefficient
FSOTC Resistor
FSOTC Resistor Temperature
Coefficient
ΔR_ISRC
R_FTC
ΔR_FTC
1300
75
1300
ppm/°C
kΩ
ppm/°C
TEMPERATURE-TO-DIGITAL CONVERTER
Temperature ADC Resolution
Offset
Gain
Nonlinearity
Lowest Digital Output
Highest Digital Output
UNCOMMITTED OP AMP
Open-Loop Gain
Input Common-Mode Range
Output Swing
Output-Voltage High
Output-Voltage Low
Offset
Unity Gain Bandwidth
EEPROM
Maximum Erase/Write Cycles
Minimum Erase Time
Minimum Write Time
R_L = 100kΩ
No load, T_A = T_MIN to T_MAX
1mA source, T_A = T_MIN to T_MAX
1mA sink, T_A = T_MIN to T_MAX
V_IN+ = +2.5V, unity gain buffer
(Note 7)
(Note 8)
8
Bits
±3
LSB
1.45
°C/bit
±0.5
LSB
00
hex
AF
hex
V_SS
V_SS +
0.02
4.85
-20
90
4.90
0.05
2
V_DD
V_DD -
0.02
0.15
+20
dB
V
V
V
V
mV
MHz
10k
Cycles
6
ms
100
µs
Note 1: Excludes sensor or load current.
Note 2: All electronics temperature errors are compensated together with sensors errors.
Note 3: The sensor and the MAX1452 must be at the same temperature during calibration and use.
Note 4: This is the maximum allowable sensor offset.
Note 5: This is the sensor's sensitivity normalized to its drive voltage, assuming a desired full span output of +4V and a bridge volt-
age range of +1.7V to +4.25V.
Note 6: Bit weight is ratiometric to V_DD.
Note 7: Programming of the EEPROM at room temperature is recommended.
Note 8: Allow a minimum of 6ms elapsed time before sending any command.
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