max9923teub Maxim Integrated Products, Inc., max9923teub Datasheet

max9923teub

Manufacturer Part Number

max9923teub

Description

Ultra-precision, High-side Current-sense Amplifier

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX9923TEUB.pdf (1 pages)

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

max9923teub+T

Manufacturer:

MAXIM/美信

Quantity:

20 000

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The MAX9922/MAX9923 ultra-precision, high-side cur-

rent-sense amplifiers feature ultra-low offset voltage

better than 0.5%. The combination of low V

gain accuracy allows precise current measurements

even at very small sense voltages.

The MAX9922/MAX9923 are capable of both unidirec-

tional and bidirectional operation. For unidirectional

operation, connect REF to GND. For bidirectional oper-

ation, connect REF to V

The MAX9922 has adjustable gain set with two external

resistors. The MAX9923 T/H/F uses 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 mini-

mum full-scale V

The MAX9922/MAX9923 use a patented spread-spec-

trum 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

+85°C extended temperature range.

Typical Operating Circuits appear at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

XX-XXXX; Rev 0; 4/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

) of 25µV (max) and laser-trimmed gain accuracy

Notebook/Desktop Power Management

Handheld Li+ Battery Current Monitoring

Precision Current Sources

package and are specified over the -40°C to

SENSE

________________________________________________________________ Maxim Integrated Products

voltage is critical.

General Description

/2.

Applications

and high-

Ultra-Precision, High-Side

Current-Sense Amplifier

♦ Ultra-Precision V

♦ ±0.5% (max) Full-Scale Gain Accuracy

♦ Bidirectional or Unidirectional I

♦ Multiple Gains Available

♦ 1.9V to 28V Input Common-Mode Voltage,

♦ 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

+ Denotes a lead(Pb)-free/RoHS-compliant package.

MAX9922EUB+

MAX9923TEUB+

MAX9923HEUB+ 10 µMAX

MAX9923FEUB+

Independent of V

TOP VIEW

PART

MAX9922: ±10µV (max)

MAX9923T: ±25µV (max)

MAX9923H: ±20µV (max)

MAX9923F: ±10µV (max)

Adjustable (MAX9922)

+25V/V (MAX9923T)

+100V/V (MAX9923H)

+250V/V (MAX9923F)

GND

N.C.

RSB

RS+

RS-

PIN-

PACKAGE

10 µMAX

Ordering Information

MAX9923T/H/F

MAX9922/

Over Temperature

µMAX

Pin Configuration

- 40°C to + 85° C

RANGE

TEMP

SENSE

OUT

REF

SHDN

Features

GAIN (V/V)

Adjustable

100

250

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