LDC5072-Q1 Series
Automotive inductive position sensor front end with sine/cosine interface
Manufacturer: Texas Instruments
Catalog
Automotive inductive position sensor front end with sine/cosine interface
Key Features
• AEC-Q100 qualified with the following results:Device temperature grade 0: –40°C to +160°C ambient operating temperatureIntegrated analog front-end IC for contact-less, inductive position sensors for absolute rotary position from 0° to 360°Removes the need for magnets, lowering system costSupports operation in harsh environments; immune to stray magnetic fields, dirt, and contaminationHigh resolution and accuracy of ≤ 1 degree at rotational speeds up to 480,000 RPMDifferential signal paths with sine and cosine outputs supporting a wide dynamic input range5-V and 3.3-V input supply operating modesIntegrated LC oscillator in the 2.4-MHz to 5-MHz band to excite the inductive sensor coilDifferential output drivers with high-voltage protection and large capacitive load capabilityAutomatic and manual gain control to maximize dynamic range of output driversFunctional Safety-CompliantDeveloped for functional safety applicationsDocumentation available to aid ISO 26262 system designSystematic capability up to ASIL C(D)Hardware capability up to ASIL CExtensive IC, sensor input, output, and supply pin diagnosticsReverse voltage and overvoltage protection on input supply and output pins from –15 V to 30 VSupports redundant mode for functional safetyAEC-Q100 qualified with the following results:Device temperature grade 0: –40°C to +160°C ambient operating temperatureIntegrated analog front-end IC for contact-less, inductive position sensors for absolute rotary position from 0° to 360°Removes the need for magnets, lowering system costSupports operation in harsh environments; immune to stray magnetic fields, dirt, and contaminationHigh resolution and accuracy of ≤ 1 degree at rotational speeds up to 480,000 RPMDifferential signal paths with sine and cosine outputs supporting a wide dynamic input range5-V and 3.3-V input supply operating modesIntegrated LC oscillator in the 2.4-MHz to 5-MHz band to excite the inductive sensor coilDifferential output drivers with high-voltage protection and large capacitive load capabilityAutomatic and manual gain control to maximize dynamic range of output driversFunctional Safety-CompliantDeveloped for functional safety applicationsDocumentation available to aid ISO 26262 system designSystematic capability up to ASIL C(D)Hardware capability up to ASIL CExtensive IC, sensor input, output, and supply pin diagnosticsReverse voltage and overvoltage protection on input supply and output pins from –15 V to 30 VSupports redundant mode for functional safety
Description
AI
The LDC5072-Q1 IC is an analog front-end for contact-less, inductive position sensors targeted for absolute rotary position in automotive and industrial applications. The LDC5072-Q1 excites a coil that is typically printed on a printed circuit board (PCB). The excitation is coupled back into two sets of receiver coils on the same PCB using a conductive target that is placed in close proximity of the PCB. The conductive target can also be a pattern printed on another PCB. The coil PCB stays stationary and the target moves with the motor, actuator, or valve. The excitation coil generates a secondary voltage on the receiver coils depending on the position of the target relative to the receiver coils. A signal representation of the position is obtained by reading in the voltages from the receiver coils, processing it, and giving analog outputs representing the Sine and Cosine components of the position of the target.
The LDC5072-Q1 IC is an analog front-end for contact-less, inductive position sensors targeted for absolute rotary position in automotive and industrial applications. The LDC5072-Q1 excites a coil that is typically printed on a printed circuit board (PCB). The excitation is coupled back into two sets of receiver coils on the same PCB using a conductive target that is placed in close proximity of the PCB. The conductive target can also be a pattern printed on another PCB. The coil PCB stays stationary and the target moves with the motor, actuator, or valve. The excitation coil generates a secondary voltage on the receiver coils depending on the position of the target relative to the receiver coils. A signal representation of the position is obtained by reading in the voltages from the receiver coils, processing it, and giving analog outputs representing the Sine and Cosine components of the position of the target.
