Datasheet > MAX9934_V01

MAX9934_V01

更新时间： 2024-11-15 02:50:39

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
19页	861K
描述
High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select for Multiplexing

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MAX9934_V01 数据手册

EVALUATION KIT AVAILABLE

MAX9934

High-Precision, Low-Voltage, Current-Sense Amplifier

with Current Output and Chip Select for Multiplexing

General Description

Features

The MAX9934 high-precision, low-voltage, high-side

current-sense amplifier is ideal for both bidirectional

(charge/discharge) and unidirectional current measure-

ments in battery-powered portable and laptop devices.

o Input Offset Voltage: 10µV (max)

o Gain Error Less than 0.25%

o -0.1V to +5.5V Input Common-Mode Voltage

Range

Input offset voltage (V ) is a low 10µV (max) at +25°C

across the -0.1V to 5.5V input common-mode voltage

o Chip Select Allows Multiplexing Several MAX9934

range, and is independent of V . Its precision input

Current Monitors to One ADC

specification allows the use of very small sense volt-

ages (typically 10mV full-scale) for minimally invasive

current sensing.

o Current Output Allows R

Selection

OUT

for Gain Flexibility

o Single Supply Operation: 2.5V to 3.6V

The output of the MAX9934 is a current proportional to

input V

and is available in either 25µA/mV or

o Two Gain Options: G of 25µA/mV (MAX9934T)

SENSE

5µA/mV gain options (G ) with gain accuracy better

and 5µA/mV (MAX9934F)

than 0.25% (max) at +25°C. A chip select (CS) allows

multiplexing of several MAX9934 current outputs to a

single microcontroller ADC channel (see the Typical

Operating Circuit). CS is compatible with 1.8V and 3.3V

logic systems.

o Bidirectional or Unidirectional Operation

o Small, 6-Bump UCSP (1mm x 1.5mm x 0.6mm)

and 8-Pin µMAX Packages

The MAX9934 is designed to operate from a 2.5V to

Ordering Information

3.6V V

supply, and draws just 120µA (typ) quiescent

current. When powered down (V

= 0), RS+ and RS-

PIN-

PACKAGE

TOP

MARK

PART

GAIN

draw less than 0.1nA (typ) leakage current to reduce

battery load. The MAX9934 is robust and protected

from input faults of up to 6V input differential voltage

between RS+ and RS-.

MAX9934FART+T

MAX9934FAUA+T

MAX9934FAUA/V+T

MAX9934TART+T

MAX9934TAUA+T

MAX9934TAUA/V+T

5µA/mV

25µA/mV

6 UCSP

8 µMAX

6 UCSP

8 µMAX

AAG

—

AAG

AAF

—

The MAX9934 is specified for operation over the -40°C

to +125°C temperature range and is available in an

8-pin µMAX^®or a 6-bump UCSP™ (1mm x 1.5mm x

0.6mm), making it ideal for space-sensitive applications.

AAF

Note: All devices are specified over the -40°C to +125°C

extended temperature range.

Applications

PDAs and Smartphones

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

T = Tape and reel.

MP3 Players

Sensor Instrumentation Amplifiers

Notebook PCs and Ultra-Mobile PCs

Portable Current Monitoring

Typical Operating Circuit

= 3.3V

0.1µF

LOAD

-0.1V ≤ V ≤ 5.5V

SENSE

MAX9934

RS-

RS+

TO ADC

OUT

10kΩ

1000pF

GND

µMAX is a registered trademark and UCSP is a trademark of

Maxim Integrated Products, Inc.

FROM µC

CHIP SELECT

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-5011; Rev 3; 11/12

12 3 4 5 6 7...19

中文翻译

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与MAX9934_V01相关器件

型号	品牌	获取价格	描述	数据表
MAX9934FALT+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f
MAX9934FART+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PBGA6, 1 X 1.50 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, UCSP-6
MAX9934FART+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f
MAX9934FART+TG0Y	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PBGA6, 1 X 1.50 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, UCSP-6
MAX9934FAUA/V+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f
MAX9934FAUA+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO8, ROHS COMPLIANT, MICRO MAX-8
MAX9934FAUA+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f
MAX9934TALT+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f
MAX9934TART+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PBGA6, 1 X 1.50 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, UCSP-6
MAX9934TART+T	MAXIM	获取价格	High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select f

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