A1373LKB Allegro Microsystems Inc, A1373LKB Datasheet - Page 21

• Manufacturer Part Number: A1373LKB
• Description: IC SENSOR HALL EFFECT PREC 3-SIP
• Manufacturer: Allegro Microsystems Inc
• Type: Bipolar or Unipolar, Programmabler

Specifications of A1373LKB

• Sensing Range: 1.75mV/G ~ 11.25mV/G
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Current - Output (max): 10mA
• Output Type: Analog, Ratiometric
• Features: High Precision
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 3-SIP
• Magnetic Type: Unipolar
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Output Current: 10mA
• Package Type: SIP
• Pin Count: 3
• Mounting: Through Hole
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A1373
A1374
• A bypass capacitor rated at 0.1μF must be mounted between the
VOUT pin and the GND pin during programming. The power
supply used for programming should be capable of delivering 28
V and 300 mA.
• Before beginning any Blow Fuse mode or Lock Device mode
code sequence, the device MUST be reset by cycling V
off and power-on again. Cycling power resets the device by set-
ting all bitfields that have intact fuses to 0. Bitfields with blown
fuses are unaffected.
In Try Value mode, to retain register settings from previous code
sequences, do not cycle power between sequences.
When a register is selected in Register Selection mode, when
the V
bitfields with intact fuses in that register are reset to 0.
• In Try Value mode, all bits in the register can be set in one code
sequence. For example, setting the binary value 0110 and sending
a V
ment, blowing fuses in Blow Fuse mode must be performed one
bitfield at a time. In order to program (blow fuses) for binary
0110, the bitfields MUST be programmed (blown) in two differ-
ent code sequences:one setting the 0100 bit, and the other setting
the 0010 bit (in either order). Power must be cycled before each
of the two sequences.
• Although a bitfield cannot be reset once its fuse is blown,
additional bitfields can be blown at any time, until the device is
locked by setting the Lock bit. For example, if bit 1 (0010) has
been blown, it is possible to blow bit 0 (0001). Because bit 1 was
already blown, the end result will be 0011 (code 3).
PH
PH
pulse sets code 6. However, because of the power require-
pulse is sent to enter the Bitfield Selection mode, the
and
High Precision, Output Pin Programmable
Programming Guidelines
CC
power-
• Before powering down the device after programming, observe
the recommended delay at the mid voltage level, to ensure that
the last V
voltage. This will avoid the generation of overlapping V
V
the delay is not necessary.
• Programming order is important in both Try Value mode and
in Blow Fuse mode. There will be a slight parametric shift in
sensitivity after programming the temperature coefficient, and a
slight quiescent voltage shift with polarity. Subsequent changes to
sensitivity can cause a shift in the quiescent output voltage.
The following order is recommended:
The Clamp Bit register can be programmed at any point in the
order, as no parametric shift is observed due to clamps.
• The actual distribution of parametric programming ranges are
wider than the specified programming ranges, in order to take
in to account manufacturing spread. The maximum possible
attainable range can be used with the understanding that other
specified parameters might be out of datasheet specification in
the extended range. (For an example, see the chart Sensitivity
Temperature Coefficient Range, in the Typical Characteristics
section.)
PH
a.
b.
c.
d.
e.
g.
pulses. At the end of a Lock Device mode code sequence,
Linear Hall Effect Sensor ICs
Polarity
TC Register
Sens Coarse
QVO Coarse
Sens Fine
QVO Fine
PH
pulse has decayed before voltage drops to the V
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
PL
and
PL
20