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Status
Part Number	Status
MAX9922	Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.
MAX9923	Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.

Data Sheet

FULL DATA SHEET (PDF, 408kB) Download   E-Mail

Description

The MAX9922/MAX9923 ultra-precision, high-side current-sense amplifiers feature ultra-low offset voltage (VOS) of 25µV (max) and laser-trimmed gain accuracy better than 0.5%. The combination of low VOS and high-gain accuracy allows precise current measurements even at very small sense voltages. The MAX9922/MAX9923 are capable of both unidirectional and bidirectional operation. For unidirectional operation, connect REF to GND. For bidirectional operation, connect REF to VDD/2. The MAX9922 has adjustable gain set with two external resistors. The MAX9923T/MAX9923H/MAX9923F use an internal laser-trimmed resistor for fixed gain of 25V/V, 100V/V, and 250V/V, respectively. The devices operate from a +2.85V to +5.5V single supply, independent of the input common-mode voltage, and draw only 700µA operating supply current and less than 1µA in shutdown. The +1.9V to +28V current-sense input common-mode voltage range makes the MAX9922/MAX9923 ideal for current monitoring in applications where high accuracy, large common-mode measurement range, and minimum full-scale VSENSE voltage is critical. The MAX9922/MAX9923 use a patented spread-spectrum autozeroing technique that constantly measures and cancels the input offset voltage, eliminating drift over time and temperature, and the effect of 1/f noise. This, in conjunction with the indirect current-feedback technique, achieves less than 25µV (max) offset voltage. The MAX9922/MAX9923 are available in a small 10-pin µMAX® package and are specified over the -40°C to +85°C extended temperature range.

An evaluation kit is available:  MAX9922EVKIT  

Key Features		Applications/Uses
Ultra-Precision VOS Over Temperature MAX9922: ±10µV (max) MAX9923T: ±25µV (max) MAX9923H: ±20µV (max) MAX9923F: ±10µV (max) ±0.5% (max) Full-Scale Gain Accuracy Bidirectional or Unidirectional ISENSE Multiple Gains Available Adjustable (MAX9922) +25V/V (MAX9923T) +100V/V (MAX9923H) +250V/V (MAX9923F) 1.9V to 28V Input Common-Mode Voltage, Independent of VDD Supply Voltage: +2.85V to +5.5V 700µA Supply Current, 1µA Shutdown Current Extended Temperature Range (-40°C to +85°C) Available in Space-Saving 10-Pin µMAX		Handheld Li+ Battery Current Monitoring Notebook/Desktop Power Management Precision Current Sources

Diagram

Typical Operating Circuit

Evaluation Kits

MAX9922EVKIT

Design Guides

Amplifiers and Sensors (PDF)

Reliability Reports

Show FIT data for: MAX9922 MAX9923 Request Reliability Report for: MAX9922 MAX9923

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: 1-13 of 13

MAX9922	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9922AUB+		N/A	No Longer Available	µMAX;10 pin;15.4 mm² Outline Drawing: 21-0061 (PDF) Land Pattern: 90-0330 (PDF) Use pkgcode/variation: U10+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9922AUB+T		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9922EUB+			Active	µMAX;10 pin;15.4 mm² Outline Drawing: 21-0061 (PDF) Land Pattern: 90-0330 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9922EUB+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9923	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9923FAUB+		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9923HAUB+		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9923TAUB+		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX9923FEUB+			Active	µMAX;10 pin;15.4 mm² Outline Drawing: 21-0061 (PDF) Land Pattern: 90-0330 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9923FEUB+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9923HEUB+			Active	µMAX;10 pin;15.4 mm² Outline Drawing: 21-0061 (PDF) Land Pattern: 90-0330 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9923HEUB+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9923TEUB+			Active	µMAX;10 pin;15.4 mm² Outline Drawing: 21-0061 (PDF) Land Pattern: 90-0330 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9923TEUB+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

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