|
|
PDF ACS722KMA Data sheet ( Hoja de datos )
| Número de pieza | ACS722KMA | |
| Descripción | Hall-effect Based Current Sensor IC | |
| Fabricantes | Allegro | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ACS722KMA (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
ACS722KMA
High Accuracy, Hall-effect Based Current Sensor
IC in High Isolation SOIC16 Package
FEATURES AND BENEFITS
• Patented integrated digital temperature compensation
circuitry allows for near closed loop accuracy over
temperature in an open loop sensor
• UL60950-1 (ed. 2) certified
□□Dielectric Strength Voltage = 4.8 kVrms
□□Basic Isolation Working Voltage = 1097 Vrms
□□Reinforced Isolation Working Voltage = 565 Vrms
• Industry-leading noise performance with greatly
improved bandwidth through proprietary amplifier and
filter design techniques
• Pin-selectable band width: 80 kHz for high bandwidth
applications or 20 kHz for low noise performance
• 0.85 mΩ primary conductor resistance for low power
loss and high inrush current withstand capability
• Low-profile SOIC16 package suitable for space-
constrained applications
• 3 to 3.6 V, single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage
for improved accuracy
Continued on the next page…
TÜV America
Tytpeested Certificate Number:
U8V 14 11 54214 030
CB 14 11 54214 029
CB Certificate Number:
US-22339-A1-UL
Package: 16-pin SOICW (suffix MA)
DESCRIPTION
The Allegro™ ACS722 current sensor IC is an economical and
precise solution for AC or DC current sensing in industrial,
commercial, and communication systems. The small package
is ideal for space constrained applications while also saving
costs due to reduced board area. Typical applications include
motor control, load detection and management, switched-mode
power supplies, and overcurrent fault protection.
The device consists of a precise, low-offset, linear Hall
sensor circuit with a copper conduction path located near the
surface of the die. Applied current flowing through this copper
conduction path generates a magnetic field which is sensed by
the integrated Hall IC and converted into a proportional voltage.
Device accuracy is optimized through the close proximity of the
magnetic field to the Hall transducer. A precise, proportional
voltage is provided by the low-offset, chopper-stabilized
BiCMOS Hall IC, which includes Allegro’s patented digital
temperature compensation, resulting in extremely accurate
performance over temperature. The output of the device has
a positive slope when an increasing current flows through the
primary copper conduction path (from pins 1 through 4, to pins
5 through 8), which is the path used for current sensing. The
internal resistance of this conductive path is 0.85 mΩ typical,
providing low power loss.
The terminals of the conductive path are electrically isolated
from the sensor leads (pins 9 through 16). This allows the
ACS722 current sensor IC to be used in high-side current sense
applications without the use of high-side differential amplifiers
or other costly isolation techniques.
Continued on the next page…
ACS722-DS, Rev 1
Approximate Scale 1:1
+IP
1
2
IP+
3 IP+
ACS722
16
NC
15
GND
IP+ 14
4 NC
IP+
BW_SEL 13
IP 12
VIOUT
5
6
IP–
–IP 7 IP–
IP–
8
IP–
11
NC
10
VCC
9
NC
Typical Application
The ACS722 outputs an
analog signal, VIOUT , that
changes, proportionally, with
the bidirectional AC or DC
primary sensed current, IP ,
within the specified measure-
ment range. The BW_SEL pin
can be used to select one of
CL the two bandwidths to opti-
mize the noise performance.
Grounding the BW_SEL pin
C BYPASS
0.1 mF
puts the part in the high
bandwidth (80 kHz) mode.
1 page  
ACS722KMA
High Accuracy, Hall-effect Based Current Sensor
IC in High Isolation SOIC16 Package
COMMON ELECTRICAL CHARACTERISTICS1: valid through the full range of TA = –40°C to 125°C , and at VCC =
3.3 V; unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max. Units
Supply Voltage
Supply Current
Output Capacitance Load
Output Resistive Load
Primary Conductor Resistance
Magnetic Coupling Factor
Rise Time
VCC
ICC VCC within VCC(min) and VCC(max)
CL VIOUT to GND
RL VIOUT to GND
RIP TA = 25°C
CF
IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to GND
tr IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to VCC
3 3.3 3.6 V
– 9 12 mA
– – 10 nF
4.7 – – kΩ
– 0.85 – mΩ
– 4.5 – G/A
– 4 – μs
– 17.5 – μs
Propagation Delay
IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to GND
tpd IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to VCC
– 2 – μs
– 5 – μs
Response Time
tRESPONSE
IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to GND
IP = IP(max), TA = 25°C, CL = 1 nF,
BW_SEL tied to VCC
– 5 – μs
– 22.5 – μs
Internal Bandwidth
Small signal –3 dB; CL = 1 nF,
BW_SEL tied to GND
BWi
Small signal –3 dB; CL = 1nF,
BW_SEL tied to VCC
– 80 – kHz
– 20 – kHz
Noise Density
IND
Input referenced noise density;
TA = 25°C, CL = 1 nF
–
300
–
µA(rms)/
√Hz
Noise
Input referenced noise; BWi = 80 kHz,
IN
TA = 25°C, CL = 1 nF
Input referenced noise; BWi = 20 kHz,
TA = 25°C, CL = 1 nF
–
–
84 – mA(rms)
42 – mA(rms)
Nonlinearity
ELIN Through full range of IP
– ±1
%
Saturation Voltage2
VOH RL = 4.7 kΩ, TA = 25°C
VCC –
0.33
–
–V
VOL RL = 4.7 kΩ, TA = 25°C
– – 0.33 V
Power-On Time
tPO
Output reaches 90% of steady-state
level, TA = 25°C, IP = IPR(max) applied
–
64 – μs
1Device may be operated at higher primary current levels, IP , ambient temperatures, TA , and internal leadframe temperatures, provided the Maximum Junction Tempera-
ture, TJ(max), is not exceeded.
2The sensor IC will continue to respond to current beyond the range of IP until the high or low saturation voltage; however, the nonlinearity in this region will be worse than
through the rest of the measurement range.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
5 Page 
ACS722KMA
High Accuracy, Hall-effect Based Current Sensor
IC in High Isolation SOIC16 Package
xKMATR-40AB Key Parameters
Zero Current Output Voltage vs. Temperature
1656
1654
1652
1650
1648
1646
1644
-50
0 50
Temperature (ºC)
100
150
6
4
2
0
-2
-4
-6
-50
Sensitivity vs. Temperature
34
34
33
33
33
33
33
32
-50 0 50 100 150
Temperature (ºC)
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-50
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-50
Nonlinearity vs. Temperature
0 50 100
Temperature (ºC)
150
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-50
+3 Sigma
Average
Offset Voltage vs. Temperature
0 50
Temperature (ºC)
100
150
Sensitivity Error vs. Temperature
0 50
Temperature (ºC)
100
150
Total Error at IPR(max) vs. Temperature
0 50
Temperature (ºC)
-3 Sigma
100
150
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 17 Páginas | |
| PDF Descargar | [ Datasheet ACS722KMA.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ACS722KMA | Hall-effect Based Current Sensor IC | Allegro |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |