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ZXCT1085Q

Automotive 40V common-mode fixed gain=25

Datasheet

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Description

The ZXCT1082Q/83Q/84Q/85Q/86Q/87Q are high side unipolar current sense monitors. These devices eliminate the need to disrupt the ground plane when sensing a load current.

The ZXCT1082Q/1084Q/1086Q have 60V maximum operating voltages and ZXCT1083Q/1085Q/1087Q have 40V maximum operating voltages.

The wide common-mode input voltage range and low quiescent currents coupled with SOT25 packages make them suitable for a range of applications; including automotive and systems operating from industrial 24-28V rails.

Their quiescent current is only 0.6µA thereby minimizing current sensing error.

The ZXCT1082Q and ZXCT1083Q use three external transconductance/gain setting resistors which increase versatility by permitting wide gain ranges and optimization of bandwidths.

The ZXCT1084Q/85Q/86Q/87Q are fixed gain voltage output counterparts of the ZXCT1082Q/83.

The ZXCT1082Q/3Q/4Q/5Q/6Q/7Q have been qualified to AEC-Q100 Grade 1 and are Automotive Grade supporting PPAPs

Feature(s)

Wide supply and common-mode voltage range
- 2.7V to 60V ZXCT1082Q/84Q/86Q
- 2.7V to 40V ZXCT1083Q/85Q/87Q
Independent supply and input common-mode voltage
Low quiescent current (0.6µA).
AEC-Q100 Grade 1 qualified
Extended industrial temperate range -40 to +125°C
SOT25 package in Green Molding
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
Automotive Grade
- Qualified to AEC-Q100 Standards for High Reliability
- PPAP Capable

Application(s)

Automotive current measurement
Automotive battery management
Automotive over current monitor

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP)	Automotive
AEC Qualified	Yes
Type	Voltage output
Minimum S+ Common-Mode Sense Voltage (V)	2.7
Maximum S+ Common-Mode Sense Voltage (V)	40
Minimum VCC/VB Supply Voltage (V)	2.7
Maximum VCC/VB Supply Voltage (V)	40
Sense Voltage VMAX (mV)	500
Maximum Output Voltage (V)	VS- -1
Voltage output Gain VOUT/VSENSE (V/V)	25
Current output Gain Iout/VSENSE (mA/V)	25
% Accuracy @ VSENSE =100mV Ta (%)	2
Quiescent Current (µA)	25
IS- S- Input current (nA)	1700
Bandwidth typ (MHz)	0.5
Operating Ambient Temperature Range (°C)	-40 to 125
Special Features	-

Technical Documents

SPICE Model

ZXCT1085QE5TA_PSPICE_MODEL.rar

Calculators

Zetex-CM-Calculator-V1.01.xls (1.5 MB)

Recommended Soldering Techniques

TN1.pdf

Diodes Incorporated's current monitors are high-performance, high-side/power rail current measurement ICs. They greatly simplify the measurement of load currents without disturbing the ground plane/reference point.

The current monitor families contain variants with quiescent currents as low as 3µA, and others with operating voltages up to 60V, proving solutions for overcurrent detection in consumer, industrial, and automotive applications. The portfolio includes current output variants which via an external resistor to ground to provide adjustable gain, and voltage output variants with fixed gains.

Automotive-compliant variants are available which are qualified to AEC-Q100 Grade 1 in IATF 16949 facilities supporting PPAP documentation.