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PDF A1366 Data sheet ( Hoja de datos )
| Número de pieza | A1366 | |
| Descripción | Factory-Programmed Linear Hall Effect Sensor IC | |
| Fabricantes | Allegro | |
| Logotipo |  |
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A1366
Low Noise, High Precision, Factory-Programmed Linear Hall Effect Sensor IC
With Advanced Temperature Compensation and High Bandwidth (120 kHz) Analog Output
Features and Benefits
• Factory programmed sensitivity and quiescent output
voltage with high resolution
• Proprietary segmented linear interpolated temperature
compensation (TC) technology provides a typical accu-
racy of 1% across the full operating temperature range
• 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
• Open circuit detection on ground pin (broken wire)
• Undervoltage lockout for VCC below specification
Continued on the next page…
Package: 4-pin SIP (suffix KT)
1 mm case thickness
Not to scale
Description
The Allegro™ A1366 factory-programmable linear Hall-
effect current sensor IC has been designed to achieve high
accuracy and resolution. The goal is achieved through new
proprietary linearly interpolated temperature compensation
technology that is programmed at the Allegro factory, which
provides sensitivity and offset that are virtually flat across
the full operating temperature range. The flat performance
over temperature makes this IC ideally suited for current
sensing applications. Temperature compensation is done in
the digital domain with integrated EEPROM technology
without sacrificing the analog signal path 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. Sensitivity and
quiescent (zero field) output voltage are factory programmed
with high resolution which provides for an accuracy of less
than ±1%, typical, over temperature.
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, as well as a low-impedance
output stage, and a proprietary, high bandwidth dynamic offset
Continued on the next page…
V+
VCC
Functional Block Diagram
To all subcircuits
Programming
Control
C BYPASS
Temperature
Sensor
EEPROM and
Control Logic
Sensitivity Control
Offset Control
A1366-DS
GND
Signal Recovery
VOUT
CL
1 page  
A1366
Low Noise, High Precision, Factory-Programmed
Linear Hall Effect Sensor IC with Advanced Temperature Compensation
And High Bandwidth (120 kHz) Analog Output
COMMON OPERATING CHARACTERISTICS Valid through the full operating temperature range, TA, CBYPASS = 0.1 µF,
VCC = 5 V; unless otherwise specified
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Electrical Characteristics
Supply Voltage
Supply Current
Power-On Time2
VCC 4.5 5.0 5.5
ICC No load on VOUT
– 10 15
tPO
TA = 25°C, CBYPASS = Open, CL = 1 nF, Sens =
2.5 mV/G, constant magnetic field of 320 G
–
78
–
Temperature Compensation
Power-On Time2
tTC
TA = 150°C, CBYPASS = Open, CL= 1 nF, Sens =
2.5 mV/G, constant magnetic field of 320 G
–
30
–
Undervoltage Lockout (UVLO)
Threshold2
VUVLOH
VUVLOL
TA = 25°C, VCC rising and device function
enabled
TA = 25°C, VCC falling and device function
disabled
–4–
– 3.5 –
tUVLOE
TA = 25°C, CBYPASS = Open, CL = 1 nF, Sens =
2.5 mV/G, VCC Fall Time (5 V to 3 V) = 1.5 µs
–
64
–
UVLO Enable/Disable Delay Time2
TA = 25°C, CBYPASS = Open, CL = 1 nF, Sens =
tUVLOD 2.5 mV/G, VCC Recover Time (3 V to 5 V) =
– 14 –
1.5 µs
Power-On Reset Voltage2
Power-On Reset Release Time2
Supply Zener Clamp Voltage
Internal Bandwidth
Chopping Frequency3
Output Characteristics
VPORH
VPORL
tPORR
Vz
BWi
fC
TA = 25°C, VCC rising
TA = 25°C, VCC falling
TA = 25°C, VCC rising
TA = 25°C, ICC = 30 mA
Small signal –3 dB, CL = 1 nF, TA = 25°C
TA = 25°C
– 2.6
– 2.3
– 64
6.5 7.5
– 120
– 500
–
–
–
–
–
–
Propagation Delay Time2
Rise Time2
Response Time2
Output Saturation Voltage2
tPD
tR
tRESPONSE
VSAT(HIGH)
VSAT(LOW)
TA = 25°C, magnetic field step of 320 G,
CL = 1 nF, Sens = 2.5 mV/G
TA = 25°C, magnetic field step of 320 G,
CL = 1 nF, Sens = 2.5 mV/G
TA = 25°C, magnetic field step of 320 G,
CL = 1 nF, Sens = 2.5 mV/G
TA = 25°C, RL(PULLDWN) = 10 kΩ to GND
TA = 25°C, RL(PULLUP) = 10 kΩ to VCC
– 2.2 –
– 3.6 –
– 3.7 –
4.7 –
–
– – 400
Unit1
V
mA
µs
µs
V
V
µs
µs
V
V
µs
V
kHz
kHz
µs
µs
µs
V
mV
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 
A1366
Low Noise, High Precision, Factory-Programmed
Linear Hall Effect Sensor IC with Advanced Temperature Compensation
And High Bandwidth (120 kHz) Analog Output
Characteristic Performance Data
Response Time (tRESPONSE)
400 G excitation signal with 10%-90% rise time = 1 µs
Sensitivity = 2 mV/G, CBYPASS=0.1 µF, CL=1 nF
Input = 400 G Excitation Signal
80% of Input
tRESPONSE = 3.7 µs
Output (VOUT, mV)
80% of Output
Propagation Delay (tPD)
400 G excitation signal with 10%-90% rise time = 1 µs
Sensitivity = 2 mV/G, CBYPASS=0.1 µF, CL=1 nF
tPD = 2.2 µs
20% of Input
20% of Output
Input = 400 G Excitation Signal
Output (VOUT, mV)
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 22 Páginas | |
| PDF Descargar | [ Datasheet A1366.PDF ] | |
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