Datasheet

ManualsBrandsIC Haus ManualsHall Effect SensorsAngle Sensor DFN-10

iC-MA

8-BIT ANGULAR HALL SENSOR / ENCODER

Rev C1, Page 1/19

FEATURES

♦ Quadruple Hall sensor array for error-tolerant adjustment

♦ Non-sensitive to magnetic stray ﬁelds due to differential

measurement technique

♦ Interpolator with a resolution of up to 256 angle steps per cycle

♦ Rotational speeds up to 60 000 rpm

♦ 4 buffered I/O stages for signal outputs

♦ Three conﬁguration inputs for operating mode selection

♦ Analog operation modes:

- sine/cosine signals controlled to 2 Vpp

- triangle or sawtooth signal with selectable amplitude

♦ Digital operation modes:

- A/B quadrature signals with Z index pulse

- Counter pulses for external binary counters

♦ Cascading of multiple iC-MA possible for chain operation

♦ Error signal output for detection of low magnetic ﬁeld strength

♦ Additional operating modes with reduced power consumption

♦ Standby mode when not enabled

♦ Extended temperature range of -40...+125°C

APPLICATIONS

♦ Analog and digital angle sensors

♦ Incremental angular encoders

♦ Magnetic multiturn encoders

♦ Potentiometer replacement

♦ Contactless rotary switch

♦ Commutation of brushless DC

motors

♦ Flow meter

PACKAGES

DFN10

4 mm x 4 mm x 0.9 mm

RoHS compliant

BLOCK DIAGRAM

REFHREFH

SINSIN

CONTROLCONTROL

AMPLITUDEAMPLITUDE

2222

SIN +COSSIN +COS

COSCOS

SINSIN

MODEMODE

GAINGAIN

8 BIT8 BIT

VREFVREF

DIG/RDIG/R

DIGDIG

iC-MAiC-MA

VDDVDD

GAIN CONTROLGAIN CONTROL

AMPAMPHALL SENSORHALL SENSOR

INTERFACEINTERFACE

REFLREFL

VDDVDD

I/OI/O

BIASBIASSELECTSELECT

I/OI/O

ERRORERROR

VPHIVPHI

CFG2CFG2

GNDGND

NENNEN

VDDVDD

CFG1CFG1

VDDVDD

CFG3CFG3

Summary of content (19 pages)

PAGE 1
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 1/19 FEATURES APPLICATIONS ♦ Quadruple Hall sensor array for error-tolerant adjustment ♦ Non-sensitive to magnetic stray fields due to differential measurement technique ♦ Interpolator with a resolution of up to 256 angle steps per cycle ♦ Rotational speeds up to 60 000 rpm ♦ 4 buffered I/O stages for signal outputs ♦ Three configuration inputs for operating mode selection ♦ Analog operation modes: - sine/cosine signals controlled to 2 Vpp - triangle
PAGE 2
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 2/19 DESCRIPTION The CMOS device iC-MA consists of a quadruple Hall sensor array which has been optimized for the magnetic measurement of angles of rotation. This array permits error-tolerant adjustment of the magnet, reducing assembly efforts. The integrated signal conditioning unit provides a differential sine/cosine signal at the output.
PAGE 3
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 3/19 PACKAGING INFORMATION PIN CONFIGURATION DFN10 4 mm x 4 mm (according to the JEDEC standard) 1 10 9 8 7 6 PIN FUNCTIONS No.
PAGE 4
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 4/19 PACKAGE DIMENSIONS RECOMMENDED PCB-FOOTPRINT BOTTOM 4 3.10 4 2.70 TOP 2 4.10 2.80 0.35 0.65 0.65 0.65 0.30 All dimensions given in mm. Tolerances of form and position according to JEDEC MO-229. Tolerance of sensor pattern: ±0.10mm / ±1° (with respect to center of backside pad). 0.40 0.48 SIDE 5 17 R0. 0.90 ±0.10 3.
PAGE 5
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 5/19 ABSOLUTE MAXIMUM RATINGS These ratings do not imply operating conditions; functional operation is not guaranteed. Beyond these ratings device damage may occur. Item No. Symbol Parameter G001 VDD Supply Voltage G002 V() Voltages at A, B, C, D, NEN, CFG1, CFG2 G003 Imx(VDD) Conditions V() < VDD + 0.3 V Unit Min. Max. -0.3 6 V -0.
PAGE 6
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 6/19 ELECTRICAL CHARACTERISTICS Operating conditions: VDD = 5 V ±10 % , Tj = -40 ... 125 °C, unless otherwise noted Item No. Symbol Parameter Conditions Unit Min. Typ. Max. 5 5.5 V 14 7 21 14 mA mA 200 µA General 001 002 VDD Supply Voltage I(VDD) Supply Current open pins, normal operation open pins, power reduction mode (PRM) 4.
PAGE 7
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 7/19 ELECTRICAL CHARACTERISTICS Operating conditions: VDD = 5 V ±10 % , Tj = -40 ... 125 °C, unless otherwise noted Item No. Symbol Parameter Conditions Unit Min. Typ. Max. 606 Vc()hi Clamp-Voltage high Vc()hi = V() − VDD, NEN = high, I() = 4 mA 0.3 1.6 V 607 Vc()lo Clamp-Voltage low NEN = high, I() = -4 mA -1.5 -0.
PAGE 8
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 8/19 OPERATING REQUIREMENTS: Logic Operating conditions: VDD = 5 V ±10 %, Tj = -40...125 °C, unless otherwise noted Input level low = 0...0.45 V, high = 2.4 V...VDD, timing according Figure 2 Item No. Symbol Parameter Conditions Unit Min. Max.
PAGE 9
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 9/19 THE SENSOR PRINCIPLE N z y S +Bz B x -Bz Figure 3: The principle of magnetic field measurement using a Hall sensor In conjunction with a permanent magnet iC-MA can be used to create a complete encoder system. A cylindri- cal, diametrically magnetized permanent magnet (with a diameter D of 4 mm and length L of 4 mm, for example) provides optimal sensor signals.
PAGE 10
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 10/19 PROGRAMMING THE CONFIGURATION iC-MA has 28 modes of operation (see tables on the following pages). After the device has been switched on or woken up from standby mode by a low signal at pin NEN the levels at the configuration inputs CFG1 to CFG3 are assessed. These three-level inputs can be connected to GND = low level, left open = open or connected to VDD = high level.
PAGE 11
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 11/19 OPERATING MODES Mode NEN CFG1 CFG2 Analog S-Sensor low low low D-Sensor low open low D-Sensor low high low Linear Output R-Sensor low low open low open open low high open low high open Chain Mode AB-Chain low low high D-Chain low open high S-Chain low high high Incr.
PAGE 12
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 12/19 ANALOG MODES OF OPERATION Mode Analog S-Sensor D-Sensor D-Sensor NEN CFG1 CFG2 CFG3 low low low low open high low low low low low low Port A Port B Port C Port D Res. Comment PSIN PSIN PSIN VREF NSIN NSIN PCOS PCOS PCOS GAIN NCOS NCOS PRM In the analog modes of operation the amplified Hall voltages are available at the output ports.
PAGE 13
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 13/19 RESISTOR MODES OF OPERATION Port A Port B Port C Port D VTRI VTRI VSAW VSAW REFH REFH REFH REFH MSB MSB REFL REFL NERR GAIN NERR GAIN Resistor Modes of Operation In R-Sensor mode the taps of an integrated resistive divider are selected depending on the angular position (potentiometer replacement). The value of the absolute angular position acts as a wiper and selects one of the 256 taps on the resistor chain. Res.
PAGE 14
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 14/19 AB-CHAIN, D-CHAIN AND S-CHAIN MODES Mode NEN CFG1 CFG2 CFG3 Port A Chain Operation AB-Chain low low high low A D-Chain low open high low PSIN/NSIN S-Chain low high high low PSIN/VREF Port B Port C Port D CLK CLK CLK B PCOS/NCOS PCOS/GAIN NENO NENO NENO Res.
PAGE 15
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 15/19 In the various chain modes multiple iC-MAs can be arranged in a chain (see Figure 10) where all of the devices are connected by a shared CLK line (pin B). The NEN input is evaluated synchronously with the rising CLK edge. If the NEN input level is switched to low, the device is active during the following CLK cycle(s).
PAGE 16
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 16/19 INCREMENTAL ABZ MODES Mode NEN Incr.
PAGE 17
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 17/19 as possible. If this absolute angle is between 0 ° and 180 ° the device counts up to the operating point; if the angle is between 180 ° and 360 °, it first counts down. Starting when the device is switched on all edges are output until the absolute position is reached.
PAGE 18
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 18/19 DATA INPUT VDD P0 CFG1 NCLUP CPU CFG2 NCLDN CPD iC-MA CFG3 NCLR NEN NERR P1 P2 P3 74HCT193 CPU TCD CPD MR NPL NPL Q0 Q1 Q2 P0 TCU Q3 P1 P2 P3 TCU 74HCT193 gers a countup; a high level causes the setup to count down. Figure 17 shows a countup sequence followed by a countdown sequence, both across the zero position.
PAGE 19
iC-MA 8-BIT ANGULAR HALL SENSOR / ENCODER Rev C1, Page 19/19 ORDERING INFORMATION Type Package Options iC-MA DFN10 4 mm x 4 mm iC-MA Evaluation Board Order Designation iC-MA DFN10 iC-MA EVAL MA1D For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (0) 61 35 - 92 92 - 0 Fax: +49 (0) 61 35 - 92 92 - 192 Web: http://www.ichaus.com E-Mail: sales@ichaus.com Appointed local distributors: http://www.