A1363.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 A1363 데이타시트 다운로드

No Preview Available !

A1363
Low Noise, High Precision, Programmable Linear Hall Effect Sensor IC
With Advanced Temperature Compensation and High Bandwidth (120 kHz) Analog Output
FEATURES AND BENEFITS
• Proprietary segmented linear interpolated temperature
compensation (TC) technology provides a typical
accuracy of 1% across the full operating temperature
range
• Customer programmable, high resolution offset and
sensitivity trim
• Factory programmed sensitivity and quiescent
output voltage TC with extremely stable temperature
performance
• High sensitivity Hall element for maximum accuracy
• Extremely low noise and high resolution achieved via
proprietary Hall element and low noise amplifier circuits
• 120 kHz nominal bandwidth achieved via proprietary
packaging and chopper stabilization techniques
• Patented circuits suppress IC output spiking during fast
current step inputs
Continued on the next page…
Package: 4-pin SIP (suffix KT)
1 mm case thickness
Not to scale
DESCRIPTION
The Allegro™ A1363 programmable linear Hall-effect
current sensor IC has been designed to achieve high accuracy
and resolution without compromising bandwidth. The goal
is achieved through new proprietary linearly interpolated
temperature compensation technology that is programmed
at the Allegro factory and provides sensitivity and offset that
are virtually flat across the full operating temperature range.
Temperature compensation is done in the digital domain with
integrated EEPROM technology, without sacrificing the analog
signal path 120 kHz bandwidth, making this device ideal for
HEV inverter, DC-to-DC converter, and electric power steering
(EPS) applications.
This ratiometric Hall-effect sensor IC provides a voltage output
that is proportional to the applied magnetic field. The customer
can conFigure the sensitivity and quiescent (zero field) output
voltage through programming on the VCC and output pins, to
optimize performance in the end application. The quiescent
output voltage is user-adjustable around 50% of the supply
voltage, VCC , and the output sensitivity is adjustable within
the range of 0.6 to 14 mV/G.
The sensor IC incorporates a highly sensitive Hall element with
a BiCMOS interface integrated circuit that employs a low noise
small-signal high-gain amplifier, a clamped low-impedance
Continued on the next page…
V+
VCC
(Programming)
C BYPASS
A1363-DS, Rev. 6
To all subcircuits
Temperature
Sensor
Programming
Control
EEPROM and
Control Logic
Sensitivity Control
Offset Control
Signal Recovery
GND
Functional Block Diagram
VOUT
(Programming)
CL

No Preview Available !

A1363
Low Noise, High Precision, Programmable Linear Hall Effect Sensor IC
With Advanced Temperature Compensation
And High Bandwidth (120 kHz) Analog Output
Features and Benefits (continued)
• Open circuit detection on ground pin (broken wire)
• Undervoltage lockout for VCC below specification
• Selectable sensitivity range between 0.6 and 14 mV/G through
use of coarse sensitivity programming bits
• Ratiometric sensitivity, quiescent voltage output, and clamps
for interfacing with application A-to-D converter (ADC)
• Precise recoverability after temperature cycling
• Output voltage clamps provide short circuit diagnostic
capabilities
• Wide ambient temperature range: –40°C to 150°C
• Immune to mechanical stress
• Extremely thin package: 1 mm case thickness
• AEC Q-100 automotive qualified
Description (continued)
output stage, and a proprietary, high bandwidth dynamic offset
cancellation technique. These advances in Hall-effect technology
work together to provide an industry leading sensing resolution at
the full 120 kHz bandwidth. Broken ground wire detection as well as
user-selectable output voltage clamps also are built into this device,
for high reliability in automotive applications.
Device parameters are specified across an extended ambient
temperature range: –40°C to 150°C. The A1363 sensor IC is
provided in an extremely thin case (1 mm thick), 4-pin SIP (single
in-line package, suffix KT) that is lead (Pb) free, with 100% matte
tin lead frame plating.
Selection Guide
Part Number
Packing1
Sensitivity Range2
(mV/G)
A1363LKTTN-1-T
4000 pieces per 13-in. reel
SENS_COARSE 00: 0.6 to 1.3
A1363LKTTN-2-T
4000 pieces per 13-in. reel
SENS_COARSE 01: 1.3 to 2.9
A1363LKTTN-5-T
4000 pieces per 13-in. reel
SENS_COARSE 10: 2.9 to 6.4
A1363LKTTN-10-T
4000 pieces per 13-in. reel
SENS_COARSE 11: 6.4 to 14
1 Contact Allegro for additional packing options
2 Allegro recommends against changing Coarse Sensitivity settings when programming devices that will be used in production. Each
A1363 has been Factory Temperature Compensated at a specific Sensitivity Range and changing coarse bits setting could cause sen-
sitivity drift through temperature range ,ΔSensTC , to exceed specified limits..
Specifications
Pin-out Diagram and Terminal List
Thermal Characteristics
Characteristic Performance Data
Characteristic Definitions
Functional Description
Programming Sensitivity and Quiescent
Voltage Output
Coarse Sensitivity
Memory Locking Mechanisms
Power-On Reset (POR) and Undervoltage
Lock-Out (UVLO) Operation
Detecting Broken Ground Wire
Chopper Stabilization Technique
Table of Contents
2 Programming Serial Interface
22
3 Transaction Types
22
4 Writing the Access Code
22
9 Writing to Volatile Memory
22
13 Writing to EEPROM
23
18 Reading from EEPROM or Volatile Memory 23
18
18
18
Error Checking
23
Serial Interface Reference
24
Serial Interface Message Structure
25
VCC Levels During Manchester Communication 25
19
20
21
EEPROM Cell Organization
27
EEPROM Error Checking and Correction (ECC) 28
Detecting ECC Error
28
Package Drawing
29
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2

No Preview Available !

A1363
Low Noise, High Precision, Programmable Linear Hall Effect Sensor IC
With Advanced Temperature Compensation
And High Bandwidth (120 kHz) Analog Output
SPECIFICATIONS
Absolute Maximum Ratings
Characteristic
Forward Supply Voltage
Reverse Supply Voltage
Forward Output Voltage
Reverse Output Voltage
Output Source Current
Output Sink Current
Maximum Number of EEPROM Write Cycles
Operating Ambient Temperature
Storage Temperature
Maximum Junction Temperature
Symbol
VCC
VRCC
VOUT
VROUT
IOUT(source)
IOUT(sink)
EEPROMW(max)
TA
Tstg
TJ(max)
VOUT to GND
VCC to VOUT
L temperature range
Notes
Rating
6
–0.1
25
–0.1
10
10
100
–40 to 150
–65 to 165
165
Unit
V
V
V
V
mA
mA
cycle
ºC
ºC
ºC
1 234
Pin-out Diagram
(Ejector pin mark on
opposite side)
Terminal List Table
Number
Name
1 VCC
Function
Input power supply, use bypass capacitor to connect to ground; also used for
programming
2 VOUT Output signal, also used for programming
3 NC No connection; connect to GND for optimal ESD performance
4 GND Ground
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3