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PDF A1365 Data sheet ( Hoja de datos )
| Número de pieza | A1365 | |
| Descripción | Programmable Linear Hall-Effect Sensor IC | |
| Fabricantes | Allegro | |
| Logotipo |  |
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A1365
Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator
FEATURES AND BENEFITS
• Proprietary segmented linear temperature compensation
(TC) technology provides a typical accuracy of 1% over
the full operating temperature range
• 120 kHz nominal bandwidth achieved via proprietary
packaging and chopper stabilization techniques
• Over Field Fault signal with 6-bit programmable trigger
levels, 2-bit programmable hysteresis, and latching or
non-latching behavior
• Over Field Fault response time < 4.5 μs (typ)
• Extremely low noise and high resolution achieved via
proprietary Hall element and low-noise amplifier circuits
• Customer-programmable, high-resolution offset and
sensitivity trim
• Available in a 1-mm-thick SIP through-hole package
• Factory-programmed sensitivity and quiescent
output voltage TC with extremely stable temperature
performance
Continued on the next page…
PACKAGE:
4-Pin SIP (suffix KT)
Not to scale
DESCRIPTION
The A1365 linear output Hall-effect sensor IC is specifically
designed to provide a highly accurate output with improved
resolution at high bandwidth for use in current-sensing
applications. This device employs a segmented, linearly
interpolated temperature compensation technology, which
provides greater accuracy in sensitivity and offset voltage
trimming and hence virtually zero temperature drift. This
improvement greatly reduces the total error of the device across
the operating temperature range.
The highly programmable Over Field Fault signal (FAULT
pin) can be used to detect a high magnetic field condition.
Broken ground wire detection, undervoltage lockout for VCC
below specification, and user-selectable output voltage clamps
are also included, which are important for high reliability in
automotive applications. The sensor accuracy and diagnostic
capability make it ideally suited for automotive sockets such
as HEV inverter and DC-to-DC converter applications.
The A1365 Hall-effect sensor IC is extremely sensitive, fast,
and temperature-stable. The accuracy and flexibility of this
device is enhanced by user programmability, performed via
the VCC supply and the output pins, which allows the device
to be optimized in the application.
This ratiometric Hall-effect sensor IC provides a voltage output
that is proportional to the applied magnetic field. The quiescent
output voltage is user-adjustable around 50% (bidirectional) of
Continued on the next page…
V+
VCC (Programming)
CBYPASS
Temperature
Sensor
Programming
Control
EEPROM and
Control Logic
6 bits
Sensitivity Control
Offset Control
Signal Recovery
6-Bit Programmable Window Comparator
VREF(High) –
0.88 × VCC to 0.72 × VCC
COMP_IN +
–
VREF(Low) +
0.12 × VCC to 0.28 × VCC
Internal
Pull-Up
FAULT
VOUT
(Programming)
A1365-GS-DS
GND
Functional Block Diagram
1 page  
A1365
Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator
OPERATING CHARACTERISTICS: valid through the full operating temperature range TA, CBYPASS = 0.1 µF, and VCC = 5 V,
unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit1
Electrical Characteristics
Supply Voltage
Supply Current
VCC 4.5 5 5.5 V
No load on VOUT, ¯F¯ ¯A ¯¯U¯¯L¯ ¯T¯ pin in high-
ICC impedance state, connected through a 10 kΩ –
resistor to VCC
10 15 mA
Power-On Time2
Temperature Compensation
Power-On Time2
tPO TA = 25°C, CBYPASS = open, CL = 1 nF
tTC TA = 25°C, CBYPASS = open, CL = 1 nF
– 100 – µs
– 90 – µs
Undervoltage Lockout (UVLO)
Threshold2
VUVLOH
VUVLOL
VCC rising and device function enabled
VCC falling and device function disabled
– 4 4.3 V
3.05 3.2 – V
UVLO Enable/Disable Delay Time2
tUVLOE
tUVLOD
TA = 25°C, CBYPASS = open, CL = 1 nF,
VCC fall time (5 V to 3 V) = 1.5 μs
TA = 25°C, CBYPASS = open, CL = 1 nF,
VCC recover time (3 V to 5 V) = 1.5 μs
– 67 – µs
– 6 – µs
Power-On Reset Voltage2
VPORH
VPORL
TA = 25°C, VCC rising
TA = 25°C, VCC falling
– 2.9 – V
– 2.5 – V
Power-On Reset Release Time2
tPORR
TA = 25°C, VCC rising
– 85 – µs
Supply Zener Clamp Voltage
Vz TA = 25°C, ICC = 30 mA
6.5 7.5 – V
Internal Bandwidth
BWi Small signal –3 dB, CL = 1 nF, TA = 25°C
– 120 – kHz
Chopping Frequency3
fC TA = 25°C
– 500 – kHz
VOUT Characteristics
Propagation Delay Time2
tpd
TA = 25°C, step magnetic field of 400 G,
CL = 1 nF, Sens = 2 mV/G
– 2.2 – µs
Rise Time2
tr
TA = 25°C, step magnetic field of 400 G,
CL = 1 nF, Sens = 2 mV/G
– 3.6 – µs
Response Time2
tRESPONSE
TA = 25°C, step magnetic field of 400 G,
CL = 1 nF, Sens = 2 mV/G
– 3.7 – µs
Delay to Clamp2,4
tCLP
TA = 25°C, step magnetic field from 160 to
240 G, CL = 1 nF, Sens = 10 mV/G
–
10
– µs
Output Voltage Clamp5
VCLP(HIGH)
VCLP(LOW)
TA = 25°C, RL(PULLDWN) = 10 kΩ to GND
TA = 25°C, RL(PULLUP) = 10 kΩ to VCC
4.55 – 4.85 V
0.15 – 0.45 V
Output Saturation Voltage2
VSAT(HIGH)
VSAT(LOW)
TA = 25°C, RL(PULLDWN) = 10 kΩ to GND
TA = 25°C, RL(PULLDWN) = 10 kΩ to VCC
4.8 –
–V
– – 300 mV
Broken Wire Voltage2
VBRK(HIGH)
VBRK(LOW)
TA = 25°C, RL(PULLUP) = 10 kΩ to VCC
TA = 25°C, RL(PULLDWN) = 10 kΩ to GND
– VCC –
V
– 200 – mV
TA = 25°C, CL = 1 nF
– 1.1 – mG/√(Hz)
Noise6
TA = 25°C, CL = 1 nF, Sens = 2 mV/G,
VN bandwidth = BWi
– 6.3 – mVp-p
TA = 25°C, CL = 1 nF, Sens = 2 mV/G,
bandwidth = BWi
– 1 – mVRMS
Continued on the next page…
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
5 Page 
A1365
Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator
Temperature Compensation Power-On Time (tTC)
400G Constant Excitation Signal, with VCC 10%-90% rise time = 1.5 μs
Sensitivity = 2mV/G, CBYPASS = Open, CL = 1 nF
90% of Output
Supply (VCC, V)
Output (VOUT, V)
90% of Temperature
Compensated Output
tTC = 89 µs
C1 F BwL DC1M C2 F BwL DC1M
1.00 V/div
1.00 V/div
-3.0000 V
-3.0000 V
4.9957 V
3.0335 V
5.0019 V
3.4127 V
Dy 6.2 mV Dy 379.2 mV
UVLO Enable Time (tUVLOE)
VCC 5 V - 3 V fall time = 1.5 µs
Sensitivity = 2 mV/G, CBYPASS = Open, CL = 1 nF
Timebase -120 µs Trigger C1 DC
50.0 µs/div Stop
3.13 V
10.0 ks 20 MS/s Edge Positive
X1 = 97.80 µs DX = 88.45 µs
X2 = 186.25 µs 1/DX = 11.306 kHz
Supply (VCC, V)
VUVLOL
C1 F BwL DC1M C2 F BwL DC1M
1.00 V/div
1.00 V/div
-3.0000 V
-3.0000 V
3.5134 V
2.6689 V
3.0227 V
Dy -490.6 mV Dy
12.7 mV
-2.6561 V
tUVLOE = 67 µs
Output (VOUT, V)
Output = 0 V
Tbase -2.5628 ms Trigger C1 DC
20.0 µs/div Stop
3.54 V
10.0 ks 50 MS/s Edge Positive
X1 = 2.50062 ms DX = 66.66 µs
X2 = 2.56728 ms 1/DX = 15.002 kHz
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet A1365.PDF ] | |
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