Datenblatt-pdf.com


ACS706ELC-20A Schematic ( PDF Datasheet ) - Allegro MicroSystems

Teilenummer ACS706ELC-20A
Beschreibung Hall Effect Based Linear Current Sensor
Hersteller Allegro MicroSystems
Logo Allegro MicroSystems Logo 




Gesamt 20 Seiten
ACS706ELC-20A Datasheet, Funktion
ACS706ELC-20A
Bidirectional 1.5 mΩ Hall Effect Based Linear Current Sensor
with Voltage Isolation and 20 A Dynamic Range
Not for New Design
These parts are in production but have been determined to be
NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications.
The device should not be purchased for new design applications
because obsolescence in the near future is probable. Samples are no
longer available.
Date of status change: December 26, 2006
Recommended Substitutions:www.DataSheet4U.com
For existing customer transition, and for new customers or new appli-
cations, refer to the ACS712.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.






ACS706ELC-20A Datasheet, Funktion
ACS706ELC-20A
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–25
Output Voltage versus Primary Current
VCC = 5 V
°C
–40
–20
25
85
150
–20 –15 –10 –5 0
5
IP (A)
10 15 20
25
Sensitivity versus Primary Current
VCC = 5 V
110
108
106
104
102
100
98
96
94
92
90
–25 –20 –15 –10
–5 0
5
IP (A)
°C
–40
–20
25
85
150
10 15 20
25
ACS706ELC20A-DS, Rev. 2
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
5

6 Page









ACS706ELC-20A pdf, datenblatt
ACS706ELC-20A
Definitions of Accuracy Characteristics
Sensitivity (Sens). The change in sensor output in response to a 1A change through the primary conductor. The sensitivity is the prod-
uct of the magnetic circuit sensitivity (G /A) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the
factory to optimize the sensitivity (mV/A) for the full-scale current of the device.
Noise (VNOISE). The product of the linear IC amplifier gain (mV/G) and the noise floor for the Allegro Hall effect linear IC (1 G).
The noise floor is derived from the thermal and shot noise observed in Hall elements. Dividing the noise (mV) by the sensitivity
(mV/A) provides the smallest current that the device is able to resolve.
Linearity (ELIN): The degree to which the voltage output from the sensor varies in direct proportion to the primary current through its
full-scale amplitude. Nonlinearity in the output can be attributed to the saturation of the flux concentrator approaching the full-scale
current. The following equation is used to derive the linearity:
{ [ [ {100 1– (Vout_full-scale amperes – VOUT(Q) )
2 (Vout_half-scale amperes VOUT(Q) )
where Vout_full-scale amperes = the output voltage (V) when the sensed current approximates full-scale ±IP .
Symmetry (ESYM). The degree to which the absolute voltage output from the sensor varies in proportion to either a positive or nega-
tive full-scale primary current. The following formula is used to derive symmetry:
100
Vout_+full-scale amperes VOUT(Q)
VOUT(Q) Vout_–full-scale amperes
Quiescent output voltage (VOUT(Q)). The output of the sensor when the primary current is zero. For a unipolar supply voltage, it
nominally remains at VCC 2. Thus, VCC = 5 V translates into VOUT(Q) = 2.5 V. Variation in VOUT(Q) can be attributed to the resolution
of the Allegro linear IC quiescent voltage trim and thermal drift.
Electrical offset voltage (VOE). The deviation of the device output from its ideal quiescent value of VCC / 2 due to nonmagnetic causes.
To convert this voltage to amperes, divide by the device sensitivity, Sens.
Accuracy (ETOT). The accuracy represents the maximum deviation of the actual output from its ideal value. This is also known as the
total ouput error. The accuracy is illustrated graphically in the Output Voltage versus Current chart on the following page.
Accuracy is divided into four areas:
0 A at 25°C. Accuracy of sensing zero current flow at 25°C, without the effects of temperature.
0 A over Δ temperature. Accuracy of sensing zero current flow including temperature effects.
Full-scale current at 25°C. Accuracy of sensing the full-scale current at 25°C, without the effects of temperature.
Full-scale current over Δ temperature. Accuracy of sensing full-scale current flow including temperature effects.
Ratiometry. The ratiometric feature means that its 0 A output, VOUT(Q), (nominally equal to VCC/2) and sensitivity, Sens, are propor-
tional to its supply voltage, VCC.The following formula is used to derive the ratiometric change in 0 A output voltage, ΔVOUT(Q)RAT (%):
VOUT(Q)VCC / VOUT(Q)5V
100
VCC / 5 V 
The ratiometric change in sensitivity, ΔSensRAT (%), is defined as:
SensVCC / Sens5V
100
‰ VCC / 5 V
ACS706ELC20A-DS, Rev. 2
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
11

12 Page





SeitenGesamt 20 Seiten
PDF Download[ ACS706ELC-20A Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ACS706ELC-20AHall Effect Based Linear Current SensorAllegro MicroSystems
Allegro MicroSystems

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche