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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 2.1MB) Download   E-Mail

Description

The MAX9918/MAX9919/MAX9920 are single-supply, high-accuracy current-sense amplifiers with a high input common-mode range that extends from -20V to +75V. These amplifiers are well suited for current monitoring of inductive loads such as motors and solenoids, where common-mode voltages can become negative due to inductive kickback, reverse-battery conditions, or transient events. The MAX9918/MAX9920 feature adjustable gain set by an external resistive-divider network. The MAX9919 features fixed gains of 45V/V (MAX9919F) and 90V/V (MAX9919N). The MAX9918/MAX9919/MAX9920 operate as unidirectional amplifiers when VREFIN = GND and as bidirectional amplifiers when VREFIN = VCC/2. The MAX9920 attenuates the input signal by a factor of 4 at the input level-shifting stage allowing the device to sense voltages up to 200mV (unidirectional operation) or ±100mV (bidirectional operation). The MAX9918/MAX9919/MAX9920 operate with a single 5V supply voltage, are fully specified over the -40°C to +125°C automotive temperature range, and are available in an 8-pin SOIC package.

An evaluation kit is available:  MAX9918EVKIT  

Key Features		Applications/Uses
-20V to +75V Input Common-Mode Voltage Range 400µV (max) Input Offset Voltage 0.6% (max) Gain Accuracy Error Uni- or Bidirectional Current Sensing Reference Input for Bidirectional OUT 120kHz, -3dB Bandwidth (MAX9919N) Single-Supply Operation (4.5V to 5.5V) 1mA Supply Current 0.5µA (typ) Shutdown Current Rail-to-Rail Output -40°C to +125°C Automotive Temperature Range		4x4 Transmission Control Current Monitoring of Inductive Loads Electronic Throttle Control H-Bridge Motor Current Sensing High- and Low-Side Precision Current Sensing Precision High-Voltage Current Monitoring Solenoid Current Sensing Super-Capacitor Charge/Discharge Monitoring in Hybrid Cars

Diagram

Typical Operating Circuit

Evaluation Kits

MAX9918EVKIT

Design Guides

Amplifiers and Sensors (PDF)

Reliability Reports

Show FIT data for: MAX9918 MAX9919 MAX9920 Request Reliability Report for: MAX9918 MAX9919 MAX9920

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX9918	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9918ASA+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9918ASA+			Active	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing: 21-0111 (PDF) Land Pattern: 90-0151 (PDF) Use pkgcode/variation: S8E+14*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9919	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9919NASA+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9919FASA+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9919FASA+			Active	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing: 21-0111 (PDF) Land Pattern: 90-0151 (PDF) Use pkgcode/variation: S8E+14*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9919NASA+			Active	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing: 21-0111 (PDF) Land Pattern: 90-0151 (PDF) Use pkgcode/variation: S8E+14*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9920	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9920ASA+			Active	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing: 21-0111 (PDF) Land Pattern: 90-0151 (PDF) Use pkgcode/variation: S8E+14*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9920ASA+T			Active	Land Pattern: Not Available	-40°C to +125°C	See data sheet

Related Products

MAX4080, MAX4081 76V, High-Side, Current-Sense Amplifiers with Voltage Output

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