Datasheet
General Description
The MAX1452 is a highly integrated analog-sensor sig-
nal processor optimized for industrial and process con-
trol applications utilizing resistive element sensors. The
MAX1452 provides amplification, calibration, and temper-
ature compensation that enables an overall performance
approaching the inherent repeatability of the sensor. The
fully analog signal path introduces no quantization noise
in the output signal while enabling digitally controlled trim-
ming with the integrated 16-bit DACs. Offset and span are
calibrated using 16-bit DACs, allowing sensor products to
be truly interchangeable.
The MAX1452 architecture includes a programmable
sensor excitation, a 16-step programmable-gain ampli-
fier (PGA), a 768-byte (6144 bits) internal EEPROM, four
16-bit DACs, an uncommitted op amp, and an onchip
temperature sensor. In addition to offset and span com-
pensation, the MAX1452 provides a unique temperature
compensation strategy for offset TC and FSOTC that was
developed to provide a remarkable degree of flexibility
while minimizing testing costs.
The MAX1452 is packaged for the commercial, industrial,
and automotive temperature ranges in 16-pin SSOP/
TSSOP and 24-pin TQFN packages.
Customization
Maxim can customize the MAX1452 for high-volume
dedicated applications. Using our dedicated cell library
of more than 2000 sensor-specific functional blocks,
Maxim can quickly provide a modified MAX1452 solution.
Contact Maxim for further information.
Applications
● Pressure Sensors
● Transducers and Transmitters
● Strain Gauges
● Pressure Calibrators and Controllers
● Resistive Elements Sensors
● Accelerometers
● Humidity Sensors
Outputs Supported
● 4–20mA
● 0 to +5V (rail-to-rail)
● +0.5V to +4.5V Ratiometric
● +2.5V to ±2.5V
Features
● Provides Amplification, Calibration, and Temperature
Compensation
● Accommodates Sensor Output Sensitivities from
4mV/V to 60mV/V
● Single Pin Digital Programming
● No External Trim Components Required
● 16-Bit Offset and Span Calibration Resolution
● Fully Analog Signal Path
● On-Chip Lookup Table Supports Multipoint
Calibration Temperature Correction
● Supports Both Current and Voltage Bridge Excitation
● Fast 150μs Step Response
● On-Chip Uncommitted Op Amp
● Secure-Lock™ Prevents Data Corruption
● Low 2mA Current Consumption
Detailed Block Diagram and Pin Configurations appear at
the end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
**Dice are tested at T
A
= +25°C, DC parameters only.
19-1829; Rev 4; 10/14
Secure-Lock is a trademark of Maxim Integrated Products, Inc.
PART TEMP RANGE PIN-PACKAGE
MAX1452CAE+ 0°C to +70°C 16 SSOP
MAX1452EAE+ -40°C to +85°C 16 SSOP
MAX1452AAE+ -40°C to +125°C 16 SSOP
MAX1452AUE+ -40°C to +125°C 16 TSSOP
MAX1452ATG+ -40°C to +125°C 24 TQFN-EP*
MAX1452C/D 0°C to +70°C Dice**
MAX1452 Low-Cost Precision Sensor
Signal Conditioner
Ordering Information
EVALUATION KIT AVAILABLE