A1330
Programmable Angle Sensor IC
with Analog and PWM Output
• Contactless 0° to 360° angle sensor IC, for angular
position, rotational speed, and direction measurement
• Single and dual die options available in same package
• Non-volatile memory (EEPROM) for use in application
trimming/calibration
• Circular Vertical Hall (CVH) technology provides a
single-channel sensor system with air gap independence
• Angle Refresh Rate (output rate) configurable between
25 and 3200 µs through EEPROM programming
• Customer-programmable output clamp levels provide
short-circuit diagnostic capabilities
• Open-circuit detection on ground pin (broken wire)
• Undervoltage lockout for V
CC
below specification
• Fine angle scaling for short-stroke applications
• Missing Magnet Error flag for notifying controller of low
magnetic field level
• EEPROM programmable angle reference (0°) position
and rotation direction (CW or CCW)
• AEC-Q100 automotive qualified
FEATURES AND BENEFITS
The A1330 is a 360° angle sensor IC that provides contactless
high-resolution angular position information based on magnetic
Circular Vertical Hall (CVH) technology. It has a system-on-
chip (SoC) architecture that includes: a CVH front end, digital
signal processing, and an analog output driver. It also includes
on-chip EEPROM technology, capable of supporting up to
100 read/write cycles, for flexible end-of-line programming
of calibration parameters. Broken ground wire detection and
user-selectable output voltage clamps make the A1330 ideal
for high-reliability applications requiring high-speed 0° to
360° angle measurements.
The A1330 provides adjustable internal averaging, allowing
response time to be traded for resolution. This is ideal for
applications operating at low rotational velocities requiring high
precision. For higher RPM applications, the A1330 provides
industry-leading analog response time when no averaging is
enabled.
With programmable angle scaling, the A1330 supports
applications requiring short angular displacements, while
maintaining full dynamic range on the output. Programmable
minimum and maximum angle thresholds allow diagnosis of
mechanical failures.
The A1330 is available as either a single or dual die option,
in an 8-pin TSSOP. The package is lead (Pb) free with 100%
matte-tin leadframe plating.
DESCRIPTION
PACKAGE: 8-pin TSSOP (LE package)
Not to scale
VCC
Regulator
Multisegment
CVH Element
To all internal circuits
SoC die 1
DIGITAL CONTROLLER
Temperature
Compensation
Internal Calibration
ADC
Zero Angle
Short Stroke
Interpolator
Diagnostics
DIGITAL BACKEND
EEPROM
ANALOG FRONTEND
Bandpass
Filter
ANALOG BACKEND
Output
Buffer
VOUT
LPF
SD Mod
PWM MOD
GND
Output
Controller
SoC die 2 (optional)
Functional Block Diagram
A1330-DS, Rev. 2
MCO-0000317
August 3, 2018
A1330
SELECTION GUIDE
Part Number
A1330LLETR-T
A1330LLETR-P-T
A1330LLETR-DD-T
A1330LLETR-P-DD-T
A1330LLETR-T-C02
[1]
[2]
Programmable Angle Sensor IC
with Analog and PWM Output
Application
Analog Output
PWM Output
Analog Output
PWM Output
Analog Output
[2]
Number of Die
Single Die
Single Die
Dual Die
Dual Die
Single Die
Package
Packing
[1]
8-pin TSSOP
4000 pieces per 13-inch reel
Contact Allegro
™
for additional packing options.
Increased Angle averaging and Analog hysteresis settings for reduced angle noise.
ABSOLUTE MAXIMUM RATINGS
Characteristic
Forward Supply Voltage
Reverse Supply Voltage
Forward Output Voltage
Reverse Output Voltage
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V
CC
V
RCC
Not sampling angles
Not sampling angles
V
OUT
< V
CC
+ 2 V
L range
Notes
Rating
26.5
–18
16
0.5
–40 to 150
165
–65 to 170
Unit
V
V
V
V
°C
°C
°C
V
OUT
V
ROUT
T
A
T
J
(max)
T
stg
THERMAL CHARACTERISTICS:
May require derating at maximum conditions; see application information
Characteristic
Package Thermal Resistance
Symbol
R
θJA
LE-8 single die package
LE-8 dual die package
Test Conditions*
Value
145
277
Unit
°C/W
°C/W
*Additional thermal information available on the Allegro website.
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2
A1330
Programmable Angle Sensor IC
with Analog and PWM Output
Table of Contents
Features and Benefits
........................................................... 1
Description
.......................................................................... 1
Packages
............................................................................ 1
Functional Block Diagram
..................................................... 1
Selection Guide
................................................................... 2
Absolute Maximum Ratings
................................................... 2
Thermal Characteristics
........................................................ 2
Pinout Diagrams and Terminal Lists
........................................ 4
Operating Characteristics
...................................................... 5
Typical Performance Characteristics
....................................... 7
Functional Description
.......................................................... 8
Operational Modes
............................................................ 8
Angle Measurement
.......................................................... 8
Short Stroke
..................................................................... 8
Output Types
.................................................................... 8
Undervoltage and Overvoltage Lockout
............................. 10
Hysteresis
...................................................................... 10
Programming Serial Interface
...............................................11
Transaction Types
............................................................11
Writing the Access Code
...................................................11
Writing to Non-Volatile Memory
..........................................11
Writing to Volatile Registers
.............................................. 12
Reading from EEPROM
................................................... 12
Error Checking
............................................................... 12
Serial Interface Reference
................................................... 13
Serial Interface Message Structure
................................... 14
Special Access Code Commands
..................................... 15
EEPROM Locking
........................................................... 16
Safety Features
.............................................................. 16
Internal Detection Circuitry
............................................... 16
Detecting Broken Ground Wire
......................................... 16
Angle Compensation
....................................................... 18
Angle Averaging
............................................................. 18
Pre-Gain Offset
............................................................... 19
Polarity Adjust
................................................................ 19
Short Stroke
................................................................... 19
Clamp and Roll-Over Logic
.............................................. 21
Additional Short Stroke Examples
..................................... 22
Application Information
....................................................... 24
Magnetic Target Requirements
......................................... 24
Field Strength
................................................................. 24
Setting the Zero-Degree Position
...................................... 25
Magnetic Misalignment
.................................................... 25
Application Circuit Description
.......................................... 26
ESD Performance
........................................................... 26
EEPROM Memory Map
....................................................... 27
Package Outline Drawings
.................................................. 35
APPENDIX A: Angle Error and Drift Definition
.......................A-1
APPENDIX B: CRC Documentation
.....................................B-1
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
3
A1330
Programmable Angle Sensor IC
with Analog and PWM Output
PINOUT DIAGRAMS AND TERMINAL LIST TABLES
Terminal List Table (Single Die)
Pin Name
VCC
VOUT
NC*
GND
Pin Number
1
2
3,5,6,7,8
4
Function
Device power supply. Serves as Manchester communication input
pin.
Angle output (analog or PWM). Manchester output during serial
communication.
Input for EEPROM programming pulses.
Not connected; connect to ground for optimal ESD performance
Ground
VCC 1
VOUT 2
NC 3
GND 4
8 NC
7 NC
6 NC
5 NC
LE-8 Package Pinout
(single die)
* NC pins must be tied to GND for optimum ESD performance.
Terminal List Table (Dual Die)
VCC_1 1
VOUT_1 2
NC 3
GND_1 4
8 NC
7 GND_2
6 VOUT_2
5 VCC_2
Pin Name
VCC_1
VOUT_1
NC*
GND_1
VCC_2
VOUT_2
GND_2
Pin Number
1
2
3, 8
4
5
6
7
Function
Device power supply. Serves as Manchester communication input
pin. (die 1)
Angle output (analog or PWM). Manchester output during serial
communication.
Input for EEPROM programming pulses. (die 1)
Not connected; connect to ground for optimal ESD performance
Ground (die 1)
Device power supply. Serves as Manchester communication input
pin. (die 2)
Angle output (analog or PWM). Manchester output during serial
communication.
Input for EEPROM programming pulses. (die 2)
Ground (die 2)
LE-8 Package Pinout
(dual die)
* NC pins must be tied to GND for optimum ESD performance.
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
4
A1330
Programmable Angle Sensor IC
with Analog and PWM Output
OPERATING CHARACTERISTICS
: Valid over the full operating voltage and ambient temperature ranges, unless otherwise noted
Characteristics
ELECTRICAL CHARACTERISTICS
Supply Voltage
[2]
V
CC
One die, analog output,
unloaded output
T
A
≥ 25°C
T
A
< 25°C
4.5
–
–
12
5.5
15
V
mA
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
[1]
Supply Current
I
CC
–
–
–
3.9
–
–
5.5
–
26.5
–
–
–
12.6
8.5
–
–
180
6.3
5.9
450
–
–
300
1
–
–
29
3
–
V
CC
130
100
–
–
12
<±1
10
10
16
10
4.65
4.5
–
–
–
–
–
5
–
–
–
–
34
–
10
–
–
–
15
10
–
–
30
–
mA
mA
V
V
mV
V
V
mV
V
mA
µs
Ω
kΩ
kΩ
mA
mA
nF
V
mV
V/ms
mV
p-p
mV
p-p
bits
%
mV
mV
One die, PWM output, unloaded output
Undervoltage Lockout Threshold
Voltage
[3]
Undervoltage Lockout Threshold
Hysteresis
Overvoltage Lockout Threshold
Voltage
Overvoltage Lockout Threshold
Hysteresis
Supply Zener Clamp Voltage
Reverse-Battery Current
Power-On Time
[4]
ANALOG OUTPUT CHARACTERISTIC
DC Output Resistance
[4]
Output Load Resistance
[4]
Output Current Limit
Output Load Capacitance
[4]
Broken Wire Voltage
Output Slew Rate
DAC Output
Noise
[4]
R
OUT
R
L
I
LIMIT
C
OUT
V
BRK(H)
V
BRK(L)
SR
A
NOISE
T
A
= 25°C, R
L(PU)
= 10 kΩ to VCC
T
A
= 25°C, R
L(PD)
= 10 kΩ to GND
10 kΩ pull-up
DAC output, excluding angle measurement
noise, 30 kHz BW setting
DAC output, excluding angle measurement
noise, 15 kHz BW setting
Across entire code range, theoretical noise-
free input, 30 kHz BW
Absolute change in analog output from 25°C
to 150°C
Absolute change in analog output from 25°C
to –40°C
VOUT to VCC
VOUT to GND
Minimum output, shorted to 5 V
Maximum output, shorted to GND
V
UVLO(H)
V
UVLO(L)
V
UVLO(HYS)
V
OVLO(H)
V
OVLO(L)
V
OVLO(HYS)
V
ZSUP
I
RCC
t
PO
Maximum V
CC
, dV/dt = 1 V/ms, T
A
= 25°C,
A1330 sampling enabled, rising V
CC
Maximum V
CC
, dV/dt = 1 V/ms, T
A
= 25°C,
A1330 sampling disabled, falling V
CC
dV/dt = 1 V/ms, T
A
= 25°C
Maximum V
CC
, dV/dt = –1 V/ms, T
A
= 25°C,
A1330 sampling disabled
Maximum V
CC
, dV/dt = 1 V/ms, T
A
= 25°C,
A1330 sampling enabled
dV/dt = –1 V/ms, T
A
= 25°C
I
CC
= I
CC
+ 3 mA, T
A
= 25°C
V
RCC
= 18 V, T
A
= 25°C
4.7
4.7
24
–
–
–
–
–
–
–
–
–
–
–
Average DAC Resolution
[4]
Output Ratiometry Error
[4]
Analog Drift
Res(avg)
Rat
ERROR
|V
DRIFT
|
Continued on the next page…
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
5
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