Data Sheet

11

V 1.1

2017-10

TLE5309D

Dual GMR/AMR Angle Sensor

Specification

Figure 10

Application circuit for the TLE5309D in differential output mode

Application circuit for low-power consumption (e.g. turn counter)

Applications that use electric motors and actuators may require a turn counter function. A turn counter

function allows to keep track of the electric motor or actuator position with low-power consumption. During

operation the sensor is powered on, therefore the angle information is constantly available and, if necessary,

stored. But when the system is not in operation the sensor is powered off to save power consumption,

therefore rotational movements are not detected. To avoid missing the position the sensor can be awaked

periodically to obtain the angle information. The minimum length of the awake time must cover the TLE5309D

power-up time (described in Table 5) and the required time to transmit the data, which is also dependent on

the application circuit.

An optimal TLE5309D application circuit for systems with turn counter function is shown in Figure 11 for

single-ended output respectively in Figure 12 for differential output. With a lower resistor and capacitor

design the low-pass filter has a time constant of only a few microseconds. Therefore, the time needed to

supply the TLE5309D with power in order to read the output signal is considerably reduced.

TLE5309D

100nF

μController

4.7nF

100nF

47nF

47nF

4.7nF

47nF

47nF

47nF

47nF

47nF

47nF

AMR

AMR VDD

AMR GND

AMR GND

AMR SIN_P

AMR SIN_N

AMR COS_P

AMR COS_N

AMR VDIAG

GMR

GMR VDD

GMR GND

GMR SIN_P

GMR SIN_N

GMR COS_P

GMR COS_N

GMR VDIAG

GMR GND

GMR

GND

GMR

GND

GMR VDD

AMR VDD

GMR GND

AMR GND

AMR

GND

AMR

GND

GMR

GND

GMR

GND

GMR

GND

AMR

GND

AMR

GND

AMR

GND

2.15k

Ω

2.15k

Ω

2.15k

Ω

2.15k

Ω

2.15k

Ω

2.15k

Ω

2.15k

Ω

2.15k

Ω