General Description
The MAX1454 is a highly integrated analog sensor signal conditioner targeted for automotive applications. The device provides amplification, calibration, and temperature compensation to enable 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 trimming of the output. Offset and span are calibrated with integrated 16-bit DACs, allowing sensors to be truly interchangeable.
Benefits and Features
Complete Signal Conditioning in a Single IC Package
Provides Amplification, Calibration, and Temperature Compensation
Accommodates Sensor Output Sensitivities from 1mV/V to 200mV/V
Overvoltage Protection to 45V
Reverse-Voltage Protection to 45V
High-Precision Compensation Reduces Downstream Circuit Complexity
Fully Analog Signal Path
16-Bit Offset and Span-Calibration Resolution
On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
Supports Both Current and Voltage-Bridge Excitation
Fast 85µs Step Response
Sensor Fault Detection
Simple PCB Layout
Single-Pin Digital Programming
No External Trim Components Required
APPLICATIONs
Pressure Sensors
Strain Gauges
Pressure Calibrators and Controllers
Resistive Element Sensors
Humidity Sensors