AS5215OM-HMFP-500 austriamicrosystems, AS5215OM-HMFP-500 Datasheet

IC ENCODER ROTARY 32-QFN

AS5215OM-HMFP-500

Manufacturer Part Number
AS5215OM-HMFP-500
Description
IC ENCODER ROTARY 32-QFN
Manufacturer
austriamicrosystems
Series
-r
Type
Linear, Rotary Encoder - Programmabler

Specifications of AS5215OM-HMFP-500

Mfg Application Notes
AS5000 Series Magnet Selection Guide AS5000 Series Magnets for Extended Vertical Range
Featured Product
AS5215 - Automotive Rotary Encoder IC
Sensing Range
20mT ~ 80mT
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
28mA
Current - Output (max)
-
Output Type
Analog
Features
Programmable
Operating Temperature
-40°C ~ 150°C
Package / Case
32-VQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
AS5215-HQFT-500
AS5215-HQFT-500TR
AS5215-HQFT-500TR
AS5215-HQFT-OM-500
AS5215-HQFT-OM-500TR
AS5215OM-HMFP-500TR
Dat ashee t
A S 5 2 1 5
P r o g r a m m a b l e 3 6 0 º M a g n e t i c A n g l e E n c o d e r w i t h B u f f e r e d S I N E &
C O S I N E O u t p u t S i g n a l s
1 General Description
The AS5215 is a redundant, contactless rotary encoder sensor for
accurate angular measurement over a full turn of 360º and over an
extended ambient temperature range of -40ºC to +150ºC.
Based on an integrated Hall element array, the angular position of a
simple two-pole magnet is translated into analog output voltages.
The angle information is provided by means of buffered sine and
cosine voltages. This approach gives maximum flexibility in system
design, as it can be directly integrated into existing architectures and
optimized for various applications in terms of speed and accuracy.
With two independent dies in one package, the device offers true
redundancy. Usually the bottom die, which is exposed to slightly less
magnetic field is employed for plausibility check.
An SSI Interface is implemented for signal path configuration as well
as a one time programmable register block (OTP), which allows the
customer to adjust the signal path gain to adjust for different
mechanical constraints and magnetic field.
Figure 1. AS5215 Block Diagram
www.austriamicrosystems.com/AS5215
PROG
DCLK
DIO
CS
Note: This Block Diagram presents only one die.
OTP Register
SSI Interface
Hall Array
Frontend
Amplifier
Digital Part
&
Revision 1.11
MANAGEMENT
BUFFER Stage
BUFFER Stage
POWER
2 Key Features
3 Applications
The AS5215 is ideal for Electronic Power Steering systems and
general purpose for automotive or industrial applications in
microcontroller-based systems.
Contactless angular position encoding
High precision analog output
Buffered Sine and Cosine signals
SSI Interface
Low power mode
Two programmable output modes: Differential or Single ended
Wide magnetic field input range: 20 – 80 mT
Wide temperature range: -40ºC to +150ºC
Fully automotive qualified to AEC-Q100, grade 0
Thin punched 32-pin QFN (7x7mm) package
AS5215
VDD
VSS
SINP/SINN
SINN/SINP/CM_SIN
COSP/COSN
COSN/COSP/CM_COS
1 - 26

Related parts for AS5215OM-HMFP-500

AS5215OM-HMFP-500 Summary of contents

Page 1

... SSI Interface DIO Hall Array & Frontend Amplifier Note: This Block Diagram presents only one die. www.austriamicrosystems.com/AS5215 2 Key Features Contactless angular position encoding High precision analog output Buffered Sine and Cosine signals SSI Interface Low power mode Two programmable output modes: Differential or Single ended Wide magnetic field input range: 20 – ...

Page 2

... Waveform – Digital Interface at Extended Mode ................................................................................................................................ 18 8.6 Waveform – Digital Interface at Analog Readback of the Zener Diodes ............................................................................................ 19 8.7 EasyZapp OTP Content ..................................................................................................................................................................... 19 8.8 Analog Sin/Cos Outputs with External Interpolator ............................................................................................................................ 20 8.9 OTP Programming and Verification .................................................................................................................................................... 21 9 Package Drawings and Markings ........................................................................................................................................... 10 Ordering Information............................................................................................................................................................. www.austriamicrosystems.com/AS5215 Revision 1. ...

Page 3

... Figure 2. Pin Assignments (Top View DIO_1 2 DIO_2 3 TC_1 4 TC_2 5 A_TST_1 6 A_TST_2 7 PROG_1 8 PROG_2 9 10 4.1 Pin Descriptions Table 1. Pin Descriptions Pin Name DIO_1 DIO_2 TC_1 TC_2 A_TST_1 A_TST_2 PROG_1 PROG_2 www.austriamicrosystems.com/AS5215 AS5215 COSN_2 / COSP_2 / CM_COS_2 17 COSP_2 / COSN_2 Pin Number 1 Data I/O for digital interface ...

Page 4

... COSP_2 / COSN_2 COSN_2 / COSP_2 / CM_COS_2 VDD_1 VDD_2 DCLK_1 DCLK_2 CS_1 CS_2 www.austriamicrosystems.com/AS5215 Pin Number 9 Supply ground 10 Switchable buffered analog output 11 Switchable buffered analog or common mode output 12 Switchable buffered analog output 13 Switchable buffered analog or common mode output 14 Switchable buffered analog output 15 16 ...

Page 5

... Electrostatic discharge (ESD) Continous Power Dissipation Total power dissipation (P ) tot Package thermal resistance (Θ_JA) Temperature Ranges and Storage Conditions Storage temperature (T_strg) Package body temperature (T_body) Humidity non-condensing Moisture Sensitive Level (MSL) www.austriamicrosystems.com/AS5215 Electrical Characteristics on page 6 Min Max Units -0 -0.3 V +0.3 ...

Page 6

... Magnetic Sensitivity V Analog output range out SF=SF 25C Amplitude ratio tracking accuracy - AP1_1/ ( over temperature AP2_1) www.austriamicrosystems.com/AS5215 Condition Condition Condition 200 – 800 Gauss Max 30000 RPM Condition Max value derived at maximum I_H (Hall Bias Current) Note: For single die only. ...

Page 7

... Hold time data bit at write access t12 Data valid after positive edge of DCLK Bus floating time t13_3 Negative edge of chip select to float bus Remark: The digital interface will be reset during the low phase of the CS signal. www.austriamicrosystems.com/AS5215 Condition Min -2 0.294 Ratiometric 0.49 -40 to 150º ...

Page 8

... Following the poles towards the center of the magnet, the Bz field decreases very linearly within a radius of ~1.6mm. This linear range is the operating range of the magnet with respect to the Hall sensor array on the chip. For best performance, the Hall elements should always be within this linear range. www.austriamicrosystems.com/AS5215 www.austriamicrosystems.com → Magnetic Rotary Encoders Revision 1.11 → Magnet (see Figure ...

Page 9

... Hall elements are located on the chip at a circle with a radius of 1mm. Since the difference between two opposite Hall sensors is measured, there will be no difference in signal amplitude when the magnet is perfectly centered or if the magnet is misaligned in any direction as long as all Hall elements stay within the linear range. www.austriamicrosystems.com/AS5215 BZ; 6mm magnet @ Z=1mm area of X- Y-misalignment from cen- ter: ± ...

Page 10

... Figure 5. Vertical Magnetic Field Across the Center of a Cylindrical Magnet www.austriamicrosystems.com/AS5215 Large Diameter Magnet (>6mm) larger horizontal misalignment area - weaker differential signal = poorer signal / noise ratio, Bz; 6mm magnet @ y=0; z=1mm ...

Page 11

... It is possible to get 40% or more signal amplitude by using thicker magnets. However, the gain in signal amplitude becomes less significant for h/ d ratios >~1.3. Therefore, the recommended magnet thickness for a 6mm diameter magnet is between 2.5 and ~8 mm. www.austriamicrosystems.com/AS5215 d= 6mm x h= 2.5mm ref. magnet: h ...

Page 12

... Magnetic materials in the vicinity of the magnet will distort or weaken the magnetic field being picked up by the Hall elements and cause additional errors in the angular output of the sensor. Figure 8. Magnetic Field Lines in Air Figure 8 shows the ideal case with the magnet in air. No magnetic materials are anywhere nearby. www.austriamicrosystems.com/AS5215 0 (see Figure 5). Revision 1.11 360º ...

Page 13

... Figure 10. Magnetic Field Lines in Iron Shaft If the magnet is mounted in a ferromagnetic material, such as iron, most of the field lines are attracted by the iron and flow inside the metal shaft (see Figure 10). The magnet is weakened substantially. This configuration should be avoided! www.austriamicrosystems.com/AS5215 Revision 1.11 (see Figure 9 ...

Page 14

... Large diameter magnets (>6 mm Ø) have a wider linear range and allow a wider lateral misalignment. The flatter slope requires shorter axial distances. The linear range decreases with airgap; Best performance is achieved at shorter airgaps. The ideal vertical distance range can be determined by using magnetic range indicators provided by the encoder ICs. These indicators are named MagInc, MagDec, MagRngn, or similar, depending on product. www.austriamicrosystems.com/AS5215 Revision 1. ...

Page 15

... Interface Modes Normal read operation mode Extended read operation mode Normal write operation mode Extended write operation mode www.austriamicrosystems.com/AS5215 Indicates the start of a new access cycle to the device → reset of the digital interface Clock source for the communication over the digital interface ...

Page 16

... Common mode voltage output enabled at SINN / CM pin (0...differential, 1...common) cm_sin Common mode voltage output enabled at COSN / CM pin (0...differential, 1...common) cm_cos gain PGA gain setting (influences overall magnetic sensitivity), 2bit Output DC offset (0…1.5V, 1…2.5V) dc_offset Hall bias setting (influences overall magnetic sensitivity), 6bit Hall_b www.austriamicrosystems.com/AS5215 analog_sig gen_rst 0 ...

Page 17

... The amplitude of the output signal is programmable via sensitivity (6bit) and/or gain (2bit) settings Figure 13. Sensitivity Gain Settings - Sensitivity [mV/mT] Magnetic Sensitivity vs. OTP Hall Current & PGA Gain Setting www.austriamicrosystems.com/AS5215 Hall Current OTP setting (6 bits Hall Current OTP setting (6 bits) Revision 1.11 M_PGA_00 M_PGA_01 M_PGA_10 ...

Page 18

... In the extended mode, the digital interface needs four clocks for one data bit. During this time, the device is able to handle internal signals for special access (e.g. the easy zap interface). Figure 15. Digital Interface at Extended Mode CMD_PHASE DCLK t1_3 CS t2_3 DIO CMD4 CMD3 CMD2 CMD1 t3 t4 DIO DIO www.austriamicrosystems.com/AS5215 DATA_PHASE t5 CMD2 CMD1 CMD0 t7 t6 D15 t11 D15 D14 DATA_PHASE t7 t5 CMD0 t8 ...

Page 19

... Sets overall sensitivity Output DC offset setting 6 user Programmable gain amplifier setting 8 user Set in production test 13 austriamicrosystems Inverts SIN and COS channel before the 11 user PGA for inverted output function Common mode voltage output enabled at SINN / 10 user CM pin Common mode voltage output enabled at COSN / ...

Page 20

... Through the programming of one bit, you have the possibility to choose between the analog Sine and Cosine outputs (SINP, COSP) and their inverted signals (SINN, COSN). Furthermore, by programming the bits <9:10> you can enable the common mode output signals of SIN and COS. The DC bias voltage is 1.5 or 2.5 V. www.austriamicrosystems.com/AS5215 VDD PROG SINP_1/SINN_1 ...

Page 21

... Temperature f_clk CLK Frequency After programming, the programmed OTP bits must be verified in two ways: By Digital Verification: This is simply done by sending a READ OTP command (#15). The structure of this register is the same as for the OTP PROG or OTP WRITE commands. www.austriamicrosystems.com/AS5215 Output CS Output DCLK I/O DIO 8 ...

Page 22

... Any voltage level in between indicates incorrect programming. Figure 19. Analog OTP Verification +5V VDD VDD Micro Controller VSS VSS www.austriamicrosystems.com/AS5215 VDD Output CS Output DCLK AS5130 I/O DIO PROG V Revision 1 ...

Page 23

... All dimensions are in millimeters. Angles are in degrees. 3. Bilateral coplanarity zone applies to the exposed pad as well as the terminal. 4. Radius on terminal is optional the total number of terminals. Marking: YYWWVZZ. YY Last two digits of the manufacturing year www.austriamicrosystems.com/AS5215 18085-002 YYWWVZZ AS5215OM B2P0 WW Manufacturing week Plant identifier Revision 1.11 Symbol Min Nom Max A 0 ...

Page 24

... Feb 10, 2010 Mar 19, 2010 1.10 Sep 06, 2010 1.11 Jun 27, 2011 Note: Typos may not be explicitly mentioned under revision history. www.austriamicrosystems.com/AS5215 Owner Initial revision Redundancy Coding topic deleted. Updated Key Features, Table 1 Figure 17. Updated min, typ, max values for ‘Power up time’ parameter in ...

Page 25

... Ordering Information The devices are available as the standard products shown in Table 13. Ordering Information Ordering Code AS5215OM-HMFP Sine and cosine analog output magnetic rotary encoder Note: All products are RoHS compliant and austriamicrosystems green. Buy our products or get free samples online at ICdirect: Technical Support is available at http://www ...

Page 26

... AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application ...

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