A1333
2
Precision, High Speed, Hall-Effect Angle Sensor IC
with Integrated Diagnostics for Safety-Critical Applications
-
DESCRIPTION
FEATURES AND BENEFITS
TheA1333 is a 360° angle sensor IC that provides contactless
high-resolutionangularpositioninformationbasedonmagnetic
Circular Vertical Hall (CVH) technology. It has a system-on-
chip (SoC) architecture that includes: a CVH front end, digital
signal processing, and motor commutation (UVW) or encoder
outputs(A,B,I).Italsoincludeson-chipEEPROMtechnology,
capable of supporting up to 100 read/write cycles, for flexible
end-of-lineprogrammingofcalibrationparameters.TheA1333
is ideal for automotive applications requiring 0° to 360° angle
measurements, suchaselectronicpowersteering(EPS), rotary
PRNDLs, and throttle systems.
• Contactless 0° to 360° angle sensor IC, for angular
position, rotational speed, and direction measurement
□ Capable of sensing magnet rotational speeds targeting
12b effective resolution with 900 G field
□ Circular Vertical Hall (CVH) technology provides a
single channel sensor system supporting operation
across a wide range of air gaps
• Developed in accordance with ISO 26262:2011
requirements for hardware product development for use
in safety-critical applications
□ Single die version designed to meet ASIL B
requirements when integrated and used in conjunction
with the appropriate system-level control, in the
manner prescribed in the A1333 Safety Manual
□ Dual die version designed to meet ASIL D
requirements when integrated and used in conjunction
with the appropriate system-level control, in the
manner prescribed in the A1333 Safety Manual
• High diagnostic coverage
The A1333 supports customer integration into safety-critical
applications.
The A1333 is available in a dual-die 24-pin eTSSOP and a
single-die 14-pin TSSOPpackage. The packages are lead (Pb)
free with 100% matte-tin leadframe plating.
□ On-chip diagnostics include logic built-in self-test
(LBIST), signal path diagnostics, and watchdogs to
support safety-critical (ASIL) applications
PACKAGES:
24-pin eTSSOP (Suffix LP)
14-pin TSSOP (Suffix LE)
□ 4-bit CRC on SPI
• On-chip EEPROM for storing factory and customer
calibration parameters
□ Single-bit error correction, dual-bit error detection
through the use of error correction control (ECC)
Not to scale
Continued on next page...
Dual Independent SoCs
Single SoC
BYP_1
VCC_1
SoC die 1
Regulator
To all internal circuits
EEPROM
CRC Error Detection/
Correction
SPI
Control
GND_1
Adjustable
UI_DIAG
.
Temp
Sensor
Discon Pt
Control
(0o Angle)
MS egment
Target
ADC
ADC
Magnet
Circular
Vertical
Hall
PWM_1
A_1/U_1
B_1/V_1
I_1/W_1
TEST_1
Digital Processing
UI_DIAG
(Bias Current)
PLL
Angle
Compensation
CW/CCW
Rotation
Angle
Detect
CS_1/SA0_1
SPI
Interface
w/ 4-bit
CRC
Data
Registers
MISO_1
MOSI_1/SA1_1
SCLK_1
ZCD
Turns
Count
Field
Measurement
Angle
Detect
xxx_2
SoC die 2
Figure 1: A1333 Magnetic Circuit and IC Diagram
A1333-DS, Rev. 3
MCO-0000310
October 15, 2018
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