ZMID5201AE1R datasheet, PDF - EEWORLD Datasheet

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ZMID5201AE1R: DescriptionINDUCTIVE POSITION SENSOR IC; CategoryThe sensor; File Size1MB，33 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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ZMID5201AE1R Overview

INDUCTIVE POSITION SENSOR IC

ZMID5201AE1R Parametric

Parameter Name	Attribute value
for measurement	Linear, rotational position
technology	inductance
Angle of rotation - electrical, mechanical	0° ~ 360°
linear range	-
output	Analog voltage
output signal	increasing clockwise
Actuator type	string potentiometer
linearity	-
Resistor tolerance	-
Voltage - Power	4.5 V ~ 5.5 V
Installation type	surface mount
Terminal type	SMD (SMT) connector
Operating temperature	-40°C ~ 150°C

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Inductive Position Sensor IC

Description

The ZMID5201, ZMID5202, and ZMID5203 family of inductive

position sensor ICs are used for absolute rotary or linear motion

sensing in automotive, industrial, medical, and consumer appli-

cations. The ZMID520x uses the physical principles of induction in

a wire loop and eddy currents to detect the position of an electrically

conducting target that is sliding or rotating above a set of coils,

consisting of one transmitter coil and two receiver coils.

The three coils are typically printed as copper traces on a printed

circuit board (PCB). They are arranged such that the transmitter

coil induces a secondary voltage in the receiver coils that depends

on the position of the metallic target above the coils.

A signal representative of the target’s position over the coils is

obtained by demodulating and processing the secondary voltages

from the receiver coils. The target can be any kind of metal, such

as aluminum, steel or a PCB with a printed copper layer.

The ZMID5201/02/03 ICs are fully qualified according to the

automotive standard AEC-Q100 grade 0 (-40°C to 150°C ambient

temperature).

Three versions with different output interfaces are available:



ZMID5201: Analog output



ZMID5202: PWM digital output



ZMID5203: SENT digital output

ZMID5201/02/03

Datasheet

Features



Position sensing based on inductive principle



Cost effective; no magnet required



Immune to magnetic stray fields; no shielding required



Suitable for harsh environments and extreme temperatures



Only three wires (ground, supply, output)



Nonvolatile user memory; programming through output pin



Single IC supports on-axis and off-axis rotation, linear motion,

and arc motion sensing



High resolution, even for small angle ranges



High accuracy: ≤ 0.2% full scale



9-point user linearization



Rotation sensing up to a full turn of 360º



Overvoltage and reverse-polarity protection:

-14V to +18V maximum, depending on product



ESD and short-circuit protection



Power or ground loss detection



Facilitates redundant design requirements



Programmable non-linearity correction



Adaptive gain control supporting a wide range of coil designs

and target displacement



The ZMID5201/02/03 products are safety-related,

intermediate hardware parts supporting ISO26262-compliant

systems in regard to random failures

Available Support

IDT provides Application Modules that demonstrate ZMID520x

position sensing, including rotary, arc, and linear applications.

Physical Characteristics



Wide operation temperature: -40 C to +150°C



Supply voltage: 4.5V to 5.5V



Small 14-TSSOP package

Application Circuit

(cos)

(sin)

VDDT

VDDE

+5V

ZMID5201/-02/-03

SOUT

OUT

GND

Typical Applications



Rotary position sensors up to 360°; e.g. steering angle

sensors, potentiometer replacement



Small-angle sensors or arc-motion sensors; e.g. pedal,

vehicle level, or valve sensors



Linear motion sensors; e.g. linear-actuator position sensors,

fluid-level sensors

VSSE

VDDA

VDDD

TEST_ENA

R1P

R1N

R2P

R2N

TEST_D

October 5, 2018

ZMID5201/02/03 Datasheet

Contents

Pin Assignments ...........................................................................................................................................................................................4

Pin Descriptions............................................................................................................................................................................................4

Absolute Maximum Ratings ..........................................................................................................................................................................5

Operating Conditions ....................................................................................................................................................................................6

Electrical Characteristics ..............................................................................................................................................................................7

Circuit Description ........................................................................................................................................................................................9

6.1 Overview..............................................................................................................................................................................................9

6.2 Block Diagram ...................................................................................................................................................................................10

Redundant Connection ...............................................................................................................................................................................11

Protection and Diagnostics .........................................................................................................................................................................12

8.1 I/O Protection.....................................................................................................................................................................................12

8.2 Diagnostics ........................................................................................................................................................................................12

8.3 Functional Safety ...............................................................................................................................................................................12

ZMID5201 Inductive Sensor with Analog Output ........................................................................................................................................13

10. ZMID5202 Inductive Sensor with PWM Output ..........................................................................................................................................16

11. ZMID5203 Inductive Sensor with SENT Output .........................................................................................................................................19

11.1 SENT Protocol ...................................................................................................................................................................................20

12. Programming Options.................................................................................................................................................................................23

13. Operation at High Rotation Speeds ............................................................................................................................................................24

14. Interpolation, Linearity Error Correction ......................................................................................................................................................25

15. Application Examples .................................................................................................................................................................................26

16. Package Outline Drawings .........................................................................................................................................................................28

17. Marking Diagram ........................................................................................................................................................................................28

18. Ordering Information...................................................................................................................................................................................29

19. Revision History..........................................................................................................................................................................................30

List of Figures

Figure 1. Pin Assignments for 14-TSSOP Package – Top View ........................................................................................................................4

Figure 2. Parallel Resonator Circuit ....................................................................................................................................................................8

Figure 3. Coil Design for a Linear Motion Sensor ...............................................................................................................................................9

Figure 4. Block Diagram ...................................................................................................................................................................................10

Figure 5. Application Diagram, Dual Redundant Sensor with Shared Transmit Coil ........................................................................................11

Figure 6. External Components for ZMID5201 Analog Interface with Pull-Down Resistor ...............................................................................13

Figure 7. External Components for ZMID5201 Analog Interface with Pull-up Resistor ....................................................................................13

Figure 8. Example of ZMID5201 Analog Output Transfer Function and Programming Options .......................................................................15

Figure 9. External Components for ZMID5202 PWM Interface with Pull-Up Resistor ......................................................................................16

Figure 10. PWM Signal Range ...........................................................................................................................................................................17

October 5, 2018

ZMID5201/02/03 Datasheet

Figure 11. Example of PWM Output Signal ........................................................................................................................................................18

Figure 12. Example of ZMID5202 PWM Output Transfer Function and Programming Options .........................................................................18

Figure 13. External Components for ZMID5203 SENT Interface, Option A ........................................................................................................19

Figure 14. External Components for ZMID5203 SENT Interface, Option B ........................................................................................................19

Figure 15. External Components for ZMID5203 SENT Interface, Option C .......................................................................................................19

Figure 16. SENT Nibble Output for Value = 15

DEC

..............................................................................................................................................21

Figure 17. SENT Frame......................................................................................................................................................................................21

Figure 18. Example of ZMID5203 Output Transfer Function and Programming Options ...................................................................................22

Figure 19. Relationship between Resolution and Rotational Speed ...................................................................................................................24

Figure 20. Example Setup: Linear Motion ..........................................................................................................................................................26

Figure 21. Example Setup: Arc Motion ...............................................................................................................................................................26

Figure 22. Example Setup: End-of-Shaft Rotation, On-Axis, 1 × 360



...............................................................................................................26

Figure 23. Example Setup: Side-Shaft Rotation, Off-Axis, 1 × 360



...................................................................................................................26

Figure 24. Example Setup: Side-Shaft Rotation, Off-Axis, 2 × 180



...................................................................................................................27

Figure 25. Example Setup: Side-Shaft Rotation, Off-Axis, 6 × 60



.....................................................................................................................27

List of Tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Pin Descriptions...................................................................................................................................................................................4

Absolute Maximum Ratings .................................................................................................................................................................5

Operating Conditions ...........................................................................................................................................................................6

ZMID5201/02/03 Electrical Characteristics..........................................................................................................................................7

Coil Specifications ...............................................................................................................................................................................8

ZMID5201 Analog Output Buffer Characteristics...............................................................................................................................14

ZMID5202 PWM Output Buffer Characteristics .................................................................................................................................16

ZMID5203 SENT Output Buffer Characteristics ................................................................................................................................20

SENT Nibble Output for Value = 0

DEC

................................................................................................................................................20

Table 10. SENT Tick Length .............................................................................................................................................................................21

Table 11. Programming Options Overview ........................................................................................................................................................23

Table 12. Maximum Output Data Rate ..............................................................................................................................................................24

Table 13. Resolution at Different Rotation Speeds ...........................................................................................................................................25

Table 14. Linearity Correction Points ................................................................................................................................................................25

Table 15. Examples of Resolution Differences Depending on Product .............................................................................................................27

October 5, 2018

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