Specifications

54 Control and Automation Solutions Guide
Low-Cost, High-Precision Analog Sensor Signal
Conditioner Simplies Sensor Design
MAX1452
The MAX1452 is a versatile analog sensor signal conditioner that accepts output from
all types of resistive elements. Its fully analog signal path enables fast response and
provides current or voltage excitation for optimal design exibility. Four integrated
16-bit DACs and a PGA provide high-resolution input compensation, amplication,
and calibration. The MAX1452 includes on-chip ash memory and a temperature
sensor that performs multipoint temperature compensation for accurate readings.
Benefits
• Reduces bill of materials (BOM) cost
◦ High integration minimizes external
components
◦ No external trim components
required to produce calibrated,
accurate output
• Removes all systematic errors for a
highly accurate output
◦ Fully analog signal path provides
a continuous output with no
quantization error
◦ Four 16-bit DACs (76V resolution)
provide precise compensation of
full-span output (FSO) and offset
◦ Temperature compensation allows
calibration that approaches the
repeatability of the input signal
• Reduces product development time
and inventory complexity due to
programmability
◦ Suitable for use with many types
of transducers and in multiple
applications
◦ Using same signal conditioner in
many applications allows reuse of
the application circuit
◦ Can be used in products requiring
voltage output or 4–20mA current
loop
Low-cost, high-precision MAX1452 sensor signal conditioner in a ratiometric configuration.
V
DDF
V
DD
30Ω
5V
INP
INM
SENSOR
OUT
OUT
1µF
GND
0.1µF 0.1µF
V
SS
BDR
MAX1452