AUTOMOTIVE CURRENT TRANSDUCER OPEN LOOP TECHNOLOGY
DHAB S/106

Introduction

Automotive applications

The DHAB family is best suited for DC, AC, or pulsed currents
measurement in high power and low voltage automotiveapplications. It features galvanic separation between theprimary circuit (high power) and the secondary circuit (electroniccircuit).
The DHAB family gives you a choice of having different current
measuring ranges in the same housing (from ±20 up to ±900
A).

● Battery Pack MonitoringFeatures● Ratiometric transducer

UoutUoutUC● Open Loop transducer using the Hall effect● Hybrid Vehicles● EV and utility vehicles.

Principle of DHAB Family
The open loop transducers uses a Hall effect integrated circuit.
The magnetic flux density B, contributing to the rise of the Hall
voltage, is generated by the primary current IP to be measured.
The current to be measured IP is supplied by a current source
i.e. battery or generator (Figure 1).
Within the linear region of the hysteresis cycle, B is proportionalto:
B (IP) = a × IP
The Hall voltage is thus expressed by:● Low voltage application● Unipolar +5 V DC power supply● Primary current measuring range up to ±20 A for channel 1and ±500 A for channel 2● Maximum RMS primary admissible current: defined bybusbar to have T < +150 °C● Operating temperature range: −40 °C < T < +125 °C● Output voltage: full ratiometric (in sensitivity and offset).

Special feature● Dual channel sensor for wider measurement range andredundancy.

UHall = (cHall / d) × IHall × a × IP

Except for IP, all terms of this equation are constant.
Therefore:
UHall = b × IPaconstantbconstantcHall
Hall coefficient
dthickness of the Hall plate
IHall
current across Hall plates
The measurement signal UHall is amplified to supply the user
output voltage or current.

Advantages+ UC● Good accuracy for high and low current rangeIP● Good linearity- UC● Low thermal offset drift

Primary Current IP● Low thermal sensitivity drift● Hermetic package.

0V

Insulated Output Voltage Uout

Fig. 1: Principle of the open loop transducer.

Page 1/8

N° 97.B6.99.106.0
16October2023/Version 2Uout

LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106
UL 508: Ratings and assumptions of certification
File # E189713 Volume: 2 Section: 13Standards● CSA C22.2 NO. 14-10 INDUSTRIAL CONTROL EQUIPMENT - Edition 11● UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Edition 17Ratings
Parameter

SymbolPrimary involved potential

UnitValue

V AC/DC300

Max surrounding air temperature

TA°C100

Primary currentIPA0 - 500

Supply Voltage

UCV DC5Output voltage

UoutV DC

0 to 5

Conditions of acceptability
When installed in the end-use equipment, consideration shall be given to the following:
1 - These products must be mounted in a suitable end-use enclosure
2 - The secondary circuit pin terminals have not been evaluated for field wiring
3 - Low voltage control circuit shall be supplied by an isolating source of supply
4 - These products shall be used in a pollution degree 2 environments or better
5 - Primary feeder of the devices shall be connected after an overvoltage device or system which has been evaluated by theStandard for Transient Voltage Surge Suppressors, UL 1449 with a maximum clamping voltage of 4 kV.
Marking
Only those products bearing the UL or UR Mark should be considered to be Listed or Recognized and covered under UL’s
Follow-Up Service. Always look for the Mark on the product.

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LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
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DHAB S/106

Dimensions (in mm)

IPUoutUoutUC

Mechanical characteristics

System architecture (example)● Plastic case

>PBT-GF30<● Magnetic core

Channel 1: FeNi alloy

LEM - DHAB sensor.
+5 V

Channel 2: FeSi alloy● Mass82 g

Typical application +5 V
Schematic interface.

47 nF

100 nF

GndGnd● Electrical terminal coating Brass tin plated● Degrees of protection provided by enclosure IP6K9K

IP M

Channel 1

CL68 nF
Gnd

Primary
current

Mounting recommendations● Connector type

UCRRL

Gnd

Gnd GndChannel 2

TYCO 1-1456426-5● Assembly torque max

2.5 N·m (for M4 x 0.7)

● Soldering type

N/ARemark● Uout > UO when IP flows in the positive direction (see arrowon drawing).

CL68 nFGndGndCRRL

Gnd Gnd

CGnd

RL > 10 kW optional resistor for signal line diagnostic
CL < 100 nF EMC protection
RC Low pass filter EMC protection (optional)

Page 3/8
16October2023/Version 2

LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106

Absolute ratings (not operating)SymbolUnit

Maximum supply voltage
Ambient storage temperature
Electrostatic discharge voltage
RMS voltage for AC insulation test, 50 Hz, 1 min
Creepage distance
Clearance
Comparative tracking index
Maximum output current

UC maxTA stUESD
UddCpdCICTI
Iout max

V°C
VkVmm
mmmA

−10Specification
TypicalMax
14125
8
2.5
3.1
3.1
PLC310Maximum output voltage (Analog)

Uout max

V−1414Insulation resistance
Maximum output short circuit duration

RINStcMΩs500

SymbolUnit

ParameterMin−14−40Conditions

IEC 61000-4-2-ISO 10605
ISO 16750-2

Continuous
Output over voltage,
1 min @ TA= 25 °C

500 V DC, ISO 16750-2
120

Operating characteristics in nominal range (IP N)
Parameter
Supply voltage 1)
Current consumption
Maximum output current
Load resistance
Capacitive loading
Ambient operating temperature

Min

Electrical DataUC
V
4.75
ICmA
Iout max
mA−1RLΚΩ
10CLnF
1−10TA°C−40

Primary current, measuring range
Primary nominal DC or RMS current
Offset voltage
Sensitivity
Resolution
Output clamping voltage min 1)
Output clamping voltage max 1)
Output internal resistanceFrequency bandwidth 2)
Power up timeSettling time after overload
Ratiometricity error
Output voltage noise peak-peak

Performance Data channel 1
IP M channel 1
A−20IP N channel 1
A−20UOVSmV/AmVV
0.2
US ZV
4.7
RoutΩBWHz
ms
ms
ts
εr%
−0.6
Uno p-pmV−10

Primary current, measuring range
Primary nominal DC or RMS current
Offset voltage
Sensitivity
Resolution
Output clamping voltage min 1)
Output clamping voltage max 1)
Output internal resistanceFrequency bandwidth 2)
Power up time
Settling time after overload
Ratiometricity errorOutput voltage noise peak-peak

Performance Data channel 2
IP M channel 2
A−500
IP N channel 2A−500
UOVSmV/AmVV
0.2
US ZV
4.7RoutΩBWHz
ms
ms
ts
εr%
−0.6
Uno p-pmV−10Notes:1)

Specification
Typical
515Max
5.25
20
1100
65
125
2020

2.51002.50.25
4.75
170
250.3
4.8
10

High accuracy
Reduced accuracy@ TA = 25 °C@ UC = 5 V@ UC = 5 V@ UC = 5 V@ UC = 5 V@ UC = 5 V@ −3 dB200
250.610500
500

2.542.50.254.7517025Conditions

0.34.810@ TA = 25 °C@ UC = 5 V@ UC = 5 V@ UC = 5 V@ UC = 5 V@ UC = 5 V@ −3 dB200250.610

The output voltage Uout is fully ratiometric. The offset and sensitivity are dependent on the supply voltage UC relative to the following formula: 5 1
IP = × U out − U O  × with S in (V/A)
 UC
 S2)

Primary current frequencies must be limited in order to avoid excessive heating of the busbar, magnetic core and the ASIC (see feature paragraph in page 1).
Page 4/8

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LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106

Error
Channel 1
Parameter

SymbolUnit

Electrical offset current

IO EA

Magnetic offset current

IO M

ASpecification
Min

TypicalConditions

Max

Electrical Data

Offset current

AIO

Sensitivity error
Linearity errorεL%

SymbolUnit@ TA = 25 °C±0.03−0.150.15@ TA = 25 °C−0.230.23@ −10 °C < T < 65 °C−0.350.35@ −40 °C < T < 125 °C%

εS@ TA = 25 °C±0.07±0.4@ TA = 25 °C±1.0@ −10 °C < T < 65 °C±1.5@ −40 °C < T < 125 °C±0.5@ TA = 25 °C, @ UC = 5 V, of full range

Error table

Parameter

Error @ 0 A
Error @ ±10 A

AεError @ ±20 A

Temperature−40 °C−20 °C

0 °C

25 °C

65 °C

125 °C

0.35

0.29

0.23

0.15

0.23

0.35

0.70

0.58

0.45

0.30

0.46

0.70

0.90

0.75

0.59

0.40

0.60

0.90DHAB S/106 Channel 1: Absolute Error ε (A)1.00

Absolute Error (A)

0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00

-40-200204060

80100120

140

Temperature (°C)
Error @ 0 A

Error @ ±10 A

Error @ ±20 A
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LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106
Error
Channel 2Parameter

SymbolUnit

Electrical offset current

IO EA

Magnetic offset current

IO MASpecification
Min

TypicalConditions

Max

Electrical Data

Offset current

AIO

Sensitivity error
Linearity errorεL%

SymbolUnit@ TA= 25 °C±0.25−1.51.5@ TA= 25 °C−1.621.62@ −10 °C < T < 65 °C−1.81.8@ −40 °C < T < 125 °C%

εS@ TA= 25 °C±0.6±0.4@ TA = 25 °C±0.8@ −10 °C < T < 65 °C±1.2@ −40 °C < T < 125 °C±0.5@ TA = 25 °C, @ UC = 5 V, of full range

Error table

Parameter

Error @ 0 A
Error @ ±250 AAεError @ ±500 A

Temperature−40 °C−20 °C0 °C

25 °C

65 °C

125 °C

1.80

1.70

1.61

1.50

1.62

1.80

9.00

8.08

7.15

6.00

7.20

9.00

15.00

13.15

11.31

9.00

11.40

15.00

DHAB S/106 Channel 2: Absolute Error ε (A)16.00

Absolute Error (A)

14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00

-40-20020

4060

80

100120140

Temperature (°C)
Error @ 0 A

Error @ ±250 A

Error @ ±500 A
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16October2023/Version 2

LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106

PERFORMANCES PARAMETERS DEFINITIONSDelay time tD 90:

Primary current definition:

The time between the primary current signal (IP N) and theoutput signal reach at 90 % of its final value.

Uout

I [A]

Primary current nominal (IP N)

IT

90 %

Primary current, measuring range (IP M)

Uout

IPtD 90

IPDefinition of typical, minimum and maximum values:
Minimum and maximum values for specified limiting and safety
conditions have to be understood as such as values shown in“typical” graphs. On the other hand, measured values are partof a statistical distribution that can be specified by an intervalwith upper and lower limits and a probability for measured
values to lie within this interval. Unless otherwise stated(e.g. “100 % tested”), the LEM definition for such intervals
designated with “min” and “max” is that the probability forvalues of samples to lie in this interval is 99.73 %. For a normal(Gaussian) distribution, this corresponds to an interval between−3 sigma and +3 sigma. If “typical” values are not obviouslymean or average values, those values are defined to delimit
intervals with a probability of 68.27 %, corresponding to aninterval between −sigma and +sigma for a normal distribution.
Typical, minimum and maximum values are determined during
the initial characterization of a product.

Output noise voltage:t [µs]

Sensitivity:
The transducer’s sensitivity S is the slope of the straight line
Uout = f (IP), it must establish the relation:
Uout (IP) = UC/5 (S × IP + UO)

Offset with temperature:
The error of the offset in the operating temperature is thevariation of the offset in the temperature considered with theinitial offset at 25 °C.
The offset variation IO T is a maximum variation the offset in thetemperature range:
IO T = IO E max − IO E min

The output voltage noise is the result of the noise floor of theHall elements and the linear amplifier.

The offset drift TCIO E AV is the IO T value divided by thetemperature range.

Magnetic offset:

Sensitivity with temperature:

The magnetic offset is the consequence of an any current on
the primary side. It’s defined after a stated excursion of primarycurrent.

Linearity:
The maximum positive or negative discrepancy with a reference
straight line Uout = f (IP).
Unit: linearity (%) expressed with full scale of IP N.
Uout

The error of the sensitivity in the operating temperature is therelative variation of sensitivity with the temperature consideredwith the initial offset at 25 °C.
The average temperature coefficient of sensitivity TCSAV, ST is
the maximum temperature variation of S (in ppm or %) of thesensitivity in the temperature range:
ST = (Sensitivity max − Sensitivity min) / Sensitivity at 25 °C.
The average temperature coefficient of sensitivity TCSAV is theST value divided by the temperature range.
Deeper and detailed info available is our LEM technical sales
offices (www.lem.com).

Non linearity example

Offset voltage @ IP = 0 A:

Referencestraight line
Max linearity error

IP
Linearity variation in IP N

The offset voltage is the output voltage when the primary current
is zero. The ideal value of UO is UC/2. So, the difference of
UO − UC/2 is called the total offset voltage error. This offset error
can be attributed to the electrical offset (due to the resolution of
the ASIC quiescent voltage trimming), the magnetic offset, thethermal drift and the thermal hysteresis. Deeper and detailed
info available is our LEM technical sales offices (www.lem.
com).

Environmental test specifications:
Refer to LEM GROUP test plan laboratory CO.11.11.515.0 with
“Tracking_Test Plan_Auto” sheet.

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16October2023/Version 2

LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com

DHAB S/106
Environmental test specifications:
Refer to LEM GROUP test plan laboratory CO.11.11.515.0 with “Tracking_Test Plan_Auto” sheet
NameStandardConditions

Low temperature storage test

ISO 16750-4
IEC 60068-2-1

Low temperature operation test

ISO 16750-4
IEC 60068-2-1 Ad−40 °C, 240 h; power ON

HTOE (high temperature operating endurance test)

ISO 16750-4
IEC 60068-2-2 Bd

1000 h; power supply @ 125 °CPowered thermal cycle endurance

IEC 60068-2-14 Nb−40 °C (20 min), +125 °C (20 min), 600 cycles ;offset monitored

Thermal shock

IEC 60068-2-14 Na−40 °C (20 min soak) / 125 °C (20 min soak) , 1000 cycles,with connectors => 667 h (28 days)

High temperature and humidity endurance

JESD22-A101

1000 H; 85 °C / 85 % HR; power ON; Monitored once a day

Salt fog

IEC 60068-2-11

96 h @ 35 °C , 5 % of salt water solution, characterization
before and after test only at 25 °C and UC nominal−40 °C, 240 h; no power supply

Mechanical tests
Vibration in temperature

ISO 16750-3 § 4.1.2.4
mass suspended

Continuous monitoring: offset

ShocksISO 16750-3§ 4.2

Power ON. Profile 1 (500 m∙s-2; 11 ms) 10 shocks per axe Halfsinusoidal pulse

Free Fall test

ISO 16750-3

3 axis, 2 directions by axis;1 sample per axis; 1 m; concretefloor

EMC test
BCI (bulk current injection)

ISO 11452-4
Annex E.1.1, Table E.1

From 1 to 400 MHz.
Level 1: 60 mA; Functional class: A
Level 2: 100 mA; Functional class: A
Level 4: 200 mA; Functional class: B

Radiated electromagnetic immunity

ISO 11452-2
GMW 3097 (04.2012)
table 12 p.21 (level 2)

Level: 100 V/m (RMS); from 400 M to 1 GHz Functional class: A
Level: 70 V/m (RMS) from 1 G to 2 GHz Functional class: AEmission

ESD not supplied

CISPR 25

IEC 61000-4-2 +ISO 10605(07/2008)

Table 9, Class 5 by default
f = 150 kHz to 2.5 GHz
Contact discharge: ±4 kV & ±8 kV
Air discharge: ±15 kV
Functionnal class: A after reconnection(150 pF, 330 Ω)Connector tests
Connector to connector engagement force

GMW 3191 § 4.11

Locked connector disengagement force

GMW 3191 § 4.13

Unlocked connector disengagement force

GMW 3191 § 4.14

Page 8/8
16October2023/Version 2

LEM reserves the right to carry out modifications on its transducers,in order to improve them.

LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrinwww.lem.com