Datasheet

MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
4Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
DDX
= 5V, V
GND
= 0V, T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BRIDGE DRIVE
Bridge Current I
BDR
0.1 2.5 mA
Current-Mirror Ratio AA
CMRATIO[1:0] = 00 4.8 6 7.2
A/A
CMRATIO[1:0] = 01 9.6 12 14.4
CMRATIO[1:0] = 10 14.4 18 21.6
CMRATIO[1:0] = 11 24 30 36
Maximum Bridge Load
Capacitance
Voltage excitation mode (Note 4) 1 nF
FSO DAC Code Range (Note 4) 0x4000 0xC000 Hex
Output Voltage Range V
BDR
(Note 4) 0.75
V
DDX
-
0.75
V
DIGITAL-TO-ANALOG CONVERTERS (DACs)
DAC Resolution 16 Bits
Offset DAC Bit Weight
DV
OUT
/DCode
DAC reference = V
DDX
= 5V 76
FV/bit
Offset TC DAC Bit Weight
DV
OUT
/DCode
DAC reference = V
BDR
= 2.5V 38
FV/bit
FSO DAC Bit Weight
DV
BDR
/DCode
DAC reference = V
DDX
= 5V 76
FV/bit
FSO TC DAC Bit Weight
DV
BDR
/DCode
DAC reference = V
BDR
= 2.5V 38
FV/bit
COARSE-OFFSET DAC
IRO DAC Resolution Including sign 5 Bits
IRO DAC Bit Weight
DV
OUT
/DCode
Input referred, DAC reference = V
DDX
= 5V
(Note 9)
3.7 mV/bit
INTERNAL RESISTORS
OUT/DIO Pullup Resistance R
PULLUP
100
k
I
Current Source Reference
Resistor
R
ISRC
10
kI
Current Source Reference
Resistor Temperature
Coefficient
TCR
ISRC
600
ppm/NC
FLASH MEMORY
Endurance (Notes 4, 10) 10,000 Cycles
Retention
T
A
= +85NC (Note 4)
10 Years
Page Erase Time (Notes 4, 11) 32 ms
Mass Erase Time (Notes 4, 11) 32 ms