Datasheet

(V
DD
= V
DDF
= +5V, V
SS
= 0V, T
A
= +25°C, unless otherwise noted.)
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.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Current-Source Reference
Resistor Temperature Coefcient
ΔR
ISRC
1300 ppm/°C
FSOTC Resistor R
FTC
75 kΩ
FSOTC Resistor Temperature
Coefcient
ΔR
FTC
1300 ppm/°C
TEMPERATURE-TO-DIGITAL CONVERTER
Temperature ADC Resolution 8 Bits
Offset P3 LSB
Gain 1.45 °C/bit
Nonlinearity P0.5 LSB
Lowest Digital Output 00 hex
Highest Digital Output AF hex
UNCOMMITTED OP AMP
Open-Loop Gain R
L
= 100kΩ 90 dB
Input Common-Mode Range V
SS
V
DD
V
Output Swing No load, T
A
= T
MIN
to T
MAX
V
SS
+
0.02
V
DD
-
0.02
V
Output-Voltage High 1mA source, T
A
= T
MIN
to T
MAX
4.85 4.90 V
Output-Voltage Low 1mA sink, T
A
= T
MIN
to T
MAX
0.05 0.15 V
Offset V
IN+
= +2.5V, unity gain buffer -20 +20 mV
Unity Gain Bandwidth 2 MHz
EEPROM
Maximum Erase/Write Cycles (Note 7) 10k Cycles
Minimum Erase Time (Note 8) 6 ms
Minimum Write Time 100 µs
MAX1452 Low-Cost Precision Sensor
Signal Conditioner
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Electrical Characteristics (continued)