A1642LK-I1-T View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
A1642LK-I1-T
Allegro MicroSystems
'A1642LK-I1-T' PDF : 13 Pages View PDF
A1642LK
Two-Wire True Zero-Speed Miniature Differential Peak-Detecting Sensor with Continuous Calibration
OPERATING CHARACTERISTICS (continued) TA and VCC within specification, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min. Typ.1 Max. Units
SWITCHPOINT CHARACTERISTICS
Operating Speed
fOP
Analog Signal Bandwidth
BW
Operate Point
BOP
Release Point
BRP
CALIBRATION
Initial Calibration
CI
DAC CHARACTERISTICS
Allowable User-Induced Differential
Offset
FUNCTIONAL CHARACTERISTICS6
Equivalent to f – 3 dB
Transitioning from ICC(High) to ICC(Low); positive peak
referenced; AG < AGMAX
Transitioning from ICC(Low) to ICC(High); negative peak
referenced; AG < AGMAX
Quantity of rising output (current) edges required for
accurate edge detection
Operating within specification
0
– 8,000 Hz
20 40
–
kHz
– 120 –
mV
– 120 –
mV
–
–
3 Edge
–
– ±90 G
Operating Signal Range7
Sig Operating within specification
30
– 1000 G
Minimum Operating Signal
SigOP(min)
Output switching (no missed edges); ΔDC not
guaranteed
20
–
–
G
1Typical values are at TA = 25°C and VCC = 12 V. Performance may vary for individual units, within the specified maximum and minimum limits.
2Maximum voltage must be adjusted for power dissipation and junction temperature; see Power Derating section.
3Please refer to Sensor Operation section, page 11.
4Power-On Time includes the time required to complete the internal automatic offset adjust. The DACs are then ready for peak acquisition.
5dI is the difference between 10% of ICC(Low) and 90% of ICC(High), and dt is time period between those two points.
Note: di/dt is dependent upon the value of the bypass capacitor, if one is used.
6Functional characteristics valid only if magnetic offset is within the specified range for Allowable User Induced Differential Offset.
7In order to remain in specification, the magnetic gradient must induce an operating signal greater than the minimum value specified. This includes the
effect of target wobble.
A1642LK-DS
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Share Link: 