MAX49921

PRODUCTION

0 to 70V, High-Precision Current-Sense Amplifier

Unidirectional Automotive CSA with Most Extended Protection Immunity

Data Sheet (Rev. 1) Product Selection Table

Part Models: 4
1ku List Price: Starting From $1.10

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Part Details

AEC-Q100 Qualified for Automotive Applications
± 0.5µV (typ) Input Offset Voltage
± 0.05% (typ) Gain Error
0 to +70V Input Voltage Range
-42V to +80V Protective Immunity
65kHz, -3dB Bandwidth
140dB DC CMRR
Gain Options: 20V/V, 50V/V
Rail-to-Rail Output
2mm x 3mm, 8-Pin TDFN Package
-40°C to +125°C Automotive Temperature Range

Part Models: 4
1ku List Price: Starting From $1.10

Documentation

Data Sheet 1

MAX49921: 0 to 70V, High-Precision Current-Sense Amplifier Data Sheet (Rev.1) 10/06/2021

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX49921FATA/VY+	8-LFCSP_SS-2X2X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX49921FATA/VY+T	8-LFCSP_SS-2X2X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX49921TATA/VY+	8-LFCSP_SS-2X2X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX49921TATA/VY+T	8-LFCSP_SS-2X2X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Sense Amplifiers 5
MAX9919	PRODUCTION	-20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers
MAX9920	PRODUCTION	-20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers
MAX40201	RECOMMENDED FOR NEW DESIGNS	Dual-Channel, 0V to 76V Current-Sense Amplifier
MAX40056F	RECOMMENDED FOR NEW DESIGNS	Bidirectional Current Sense Amplifier with PWM-Rejection

MAX40056U

PRODUCTION

Bidirectional Current Sense Amplifier with PWM-Rejection

Evaluation Kits

Evaluation Kit for the MAX49921

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Features and Benefits

Precision Real-Time Current Monitoring
0V to +70V Input Common-Mode Range
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX49921 evaluation kit (EV kit) provides a proven design to evaluate the MAX49921 high precision, high voltage, unidirectional current-sense amplifier. This EV kit demonstrates the MAX49921 in a small, 2mm x 3mm 8-pin TDFN package.

The EV kit PCB comes with a MAX49921FATA/VY+ installed, which is the 50V/V gain version. The other gain option available is the pin-compatible MAX49921TATA/ VY+ (G = 20V/V). Contact the factory for MAX49921TATA/ VY+ availability.

Applications

Automotive Current Sensing
Battery Current Monitoring
Current Monitoring of Inductive Loads
High- and Low-Side Precision Current Sensing
Precision High-Voltage Current Monitoring
Solenoid Current Sensing
Super-Capacitor Charge/Discharge Monitoring

Resources

MAX49921EVKIT ODB Files - Design Files
894.39 K

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