KXP74 SERIES
Tri-axis, 1.5g - 6g, Digital (SPI) Output, 5x5x1.2mm DFN
The KXP74 series of linear accelerometers and inclinometers is designed to provide a high signal-to-noise ratio with excellent performance over temperature. These sensors can accept supply voltages between 2.7V and 5V. Sensitivity is factory programmable, allowing customization for applications requiring from ±1.5g to ±6g ranges. Sensor bandwidth is user-definable.
These high-performance silicon-micromachined sensors consist of a sensor element and an ASIC packaged in a 5x5x1.2mm Dual Flat No-lead (DFN). The sensor element is fabricated from single-crystal silicon with proprietary Deep Reactive Ion Etching (DRIE) processes and is protected from the environment by a hermetically-sealed silicon cap at the wafer level.
The sensor element functions on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. An ASIC, using a standard CMOS manufacturing process, detects and transforms changes in capacitance into an analog output voltage, which is proportional to acceleration. This voltage is digitized by an on-board A/D converter and is accessed via a Serial Peripheral Interface (SPI). The sense element design utilizes common mode cancellation to decrease errors from process variation and environmental stress.
| Part Number | Range(g) | Sensitivity (mg/count) |
Offset | Operating Voltage(V) |
Output | Temperature(°C) | Package |
|---|---|---|---|---|---|---|---|
| KXP74-1050 | 2 | 1.22 | 2048 (counts) | 2.8 | Digital SPI | -40 to +85 | 5x5x1.2mm DFN |
| PART NUMBER | DESCRIPTION | AXIS(ES) OF SENSITIVITY | RANGE | SENSITIVITY | STANDARD |
OPERATING VOLTAGE (V) |
TEMPERATURE (°C) |
DOCUMENTATION |
|---|---|---|---|---|---|---|---|---|
| EVAL-KXP74-1050 | KXP74-1050 Evaluation Board |
Tri XYZ | 2g standard (1.5g - 6g available) |
819 counts/g | 2048 counts | 2.8 | -40 to +85 | Board
Layout Board Schematic |
