1 Features

? AEC-Q100 qualified with the following results:

– Device temperature grade 0: –40°C to +160°C

ambient operating temperature

? High resolution and accuracy of ≤ 1 degree at

rotational speeds up to 480,000 RPM

? Differential signal paths with sine and cosine

outputs supporting a wide dynamic input range

? Integrated analog front-end IC for contact-less,

inductive position sensors for absolute rotary

position from 0° to 360°

? Supports operation in harsh environments;

immune to stray magnetic fields, dirt, and

contamination

? No magnets required

? Input supply operating modes: 5 V and 3.3 V

? Operating current: 22 mA (maximum)

? Integrated LC oscillator in the 2.4-MHz to 5-MHz

band to excite the inductive sensor coil

? Differential output drivers with high-voltage

protection and large capacitive load capability

? Automatic and manual gain control to maximize

dynamic range of output drivers

? Built-in sensor and supply diagnostics

? Reverse voltage and overvoltage protection on

input supply and output pins from –15 V to 30 V

? For enhanced functional safety and diagnostics,

see LDC5072-Q1

? Supports redundant mode

? Package: TSSOP-16 (5.00 mm x 4.40 mm)

2 Applications

? EV/HEV traction motor inverters

? Electric power steering

? Brake boost motors

? Shifter systems

? Integrated starter generators

? Pedal position

? Valves and actuators

? Robots

? e-Bikes

3 Description

LDC5071-Q1 is a high-speed and accurate inductive

sensor used for measuring absolute linear and rotary

position in automotive and industrial applications. The

device is designed to interface to three inductive

sensing coils that are typically on the printed circuit

board. One of the coils is connected to the exciter

circuit of the LDC5071-Q1 and acts as a transmitter,

and the other two secondary coils are used as

receivers. The transmitter coil induces a voltage in the

secondary coils, which is a function of the conductive

target above the sensor coils. The demodulated

signals which are produced during LDC5071-Q1

operation are then provided through the differential

signal path with sine and cosine outputs.

The LDC5071-Q1 has multiple supply options, 5-V

or 3.3-V, to suit different design options and can

be connected to a microcontroller to calculate the

rotary angle. The manual and automatic gain control

(AGC) of the LDC5071-Q1 can be used to control and

maximize the dynamic range of the outputs.

The device offers robust protection features to support

and monitor signals and overall device operation for

a seamless systems protection. The LDC5071-Q1

supports overvoltage, reverse battery and current

protection on short to high voltage on output pins.

In addition, the device provides immunity against

motor noise and can filter out-of-band low- and highfrequency

noise.