A1351KKTTN-T Allegro Microsystems Inc, A1351KKTTN-T Datasheet - Page 12

• Manufacturer Part Number: A1351KKTTN-T
• Description: IC,HALL-EFFECT SENSOR,SINGLE-ENDED,BICMOS,SIP,4PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Linear - Unipolar, Bipolarr

Specifications of A1351KKTTN-T

• Sensing Range: 0.055% ~ 0.095% DC/G
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Current - Output (max): 1mA
• Output Type: Digital, Push-Pull
• Features: High Precision
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A1351
After the initial 800 ms has elapsed, the duty cycle will cor-
respond to an applied magnetic field as expected. The 800 ms
calibration test time corresponds with a target PWM frequency of
125 Hz. If the PWM frequency is programmed away from its tar-
get of 125 Hz, the duration of the calibration test time will scale
inversely with the change in PWM frequency.
Figure 14. After powering-on, the A1351 outputs a 50% D for the first
800 ms, regardless of the applied magnetic field (Output Calibration mode
in effect). After the initial 800 ms has elapsed, the output responds to a
magnetic field as expected. The example in this figure assumes that a
large +B field is applied to the device after the initial 800 ms.
with a Push/Pull, Pulse Width Modulated Output
Output Calibration Mode
PWM output = 50% D
High Precision Linear Hall Effect Sensor IC
This test mode is optional and must be enabled by blowing its
programming bit. After the test mode bit has been blown, the
device enters Output Calibration mode every time the device is
powered-on. This test mode is provided so that the user can com-
pensate for differences in the ground potential between the A1351
and any interface circuitry used to measure the pulse width of the
A1351 output.
After 800 ms;
PWM output proportional
to applied magnetic field
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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