Technical Product Description

7

Rev. 1.0, 2015-07-21

TLI4965-5M

Functional Description

2.4

Block Diagram

Figure 3

Functional Block Diagram TLI4965-5M

2.5

Functional Block Description

The chopped Hall IC switch comprises a Hall probe, bias generator, compensation circuits, oscillator and

output transistor.

The bias generator provides currents for the Hall probe and the active circuits. Compensation circuits stabilize

the temperature behavior and reduce influence of technology variations.

The active error compensation (chopping technique) rejects offsets in the signal path and the influence of

mechanical stress to the Hall probe caused by molding and soldering processes and other thermal stress in

the package. The chopped measurement principle together with the threshold generator and the comparator

ensures highly accurate and temperature stable magnetic thresholds.

Voltage

Regulator

Bias and

Compensation

Circuits

Oscillator and

Sequencer

To All Subcircuits

Spinning Hall

Probe

Amplifier

Low Pass

Filter

Comparator

with

Hysteresis

Driver

GND

Q

Reference