MAX1452 Datasheet, PDF (3/24 Pages) Maxim Integrated Products – Low-Cost Precision Sensor Signal Conditioner

Low-Cost Precision Sensor
Signal Conditioner
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +5V, V_SS = 0, T_A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Output Offset TC Ratio
∆V_OUT/
∆Offset TC
Step Response and IC
(63% Final Value)
Maximum Capacitive Load
Output Noise
BRIDGE DRIVE
Bridge Current
I_BDR
Current Mirror Ratio
AA
V_SPAN Range (Span Code)
DIGITAL–TO–ANALOG CONVERTERS
DAC Resolution
DC to 1kHz (gain = minimum, source
impedance = 5kΩ V_DDF filter)
R_L = 1.7kΩ
R_ISOURCE = internal
T_A = T_MIN to T_MAX
ODAC Bit Weight
∆V_OUT/
∆Code
DAC reference = V_DD = +5.0V
OTCDAC Bit Weight
∆V_OUT/
∆Code
DAC reference = V_BDR = +2.5V
FSODAC Bit Weight
∆V_OUT/
∆Code
DAC reference = V_DD = +5.0V
FSOTCDAC Bit Weight
∆V_OUT/
∆Code
DAC reference = V_BDR = +2.5V
COARSE OFFSET DAC
IRODAC Resolution
Including sign
IRODAC Bit Weight
FSOTC BUFFER
∆V_OUT/
∆Code
Input referred, DAC reference =
V_DD = +5.0V (Note 6)
Minimum Output Voltage Swing
No load
Maximum Output Voltage Swing
Current Drive
INTERNAL RESISTORS
Current-Source Reference
Resistor
Current-Source Reference
Resistor Temperature Coefficient
FSOTC Resistor
FSOTC Resistor Temperature
Coefficient
No load
V_FSOTC = +2.5V
R_ISRC
∆R_ISRC
R_FTC
∆R_FTC
MIN TYP MAX UNITS
0.9
1
1.2
V/V
150
µs
1
µF
0.5
mV_RMS
0.1
0.5
2
mA
10
12
14
A/A
4000
C000
hex
16
bits
76
µV/bit
38
µV/bit
76
µV/bit
38
µV/bit
4
bits
9
mV/bit
V_DD - 1.0
-40
V_SS +
V
0.1
V
+40
µA
75
1300
75
1300
kΩ
ppm/°C
kΩ
ppm/°C
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