Datasheet > MAX4209

MAX4209

更新时间： 2024-09-30 14:57:19

品牌	Logo	应用领域
亚德诺 - ADI		放大器仪表仪表放大器
页数	文件大小	规格书
17页	1785K
描述
超低失调/漂移、高精度仪表放大器，提供REF缓冲器

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中文翻译

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MAX4209 数据手册

EVALUATION KIT AVAILABLE

MAX4208/MAX4209

Ultra-Low Offset/Drift, Precision

Instrumentation Amplifiers with REF Buffer

General Description

Beneﬁts and Features

● Spread-Spectrum, Auto-Zero Instrumentation

Amplifiers Improve DC Characteristics to Maximize

Sensor Performance

The MAX4208/MAX4209 ultra-low offset and drift instrumen-

tation amplifiers feature exceptional precision specifications,

low power consumption, rail-to-rail output, excellent gain-

bandwidth product, and buffered REFIN/MODE input in a

• Input Offset Voltage: ±20μV (max) at +25°C

• ±0.25% (max) Gain Error

very small μMAX package. These devices use a spread-

spectrum, autozeroing technique that constantly measures

and corrects the input offset, eliminating drift over time

and temperature and the effect of 1/f noise. This technique

achieves less than 20μV offset voltage, allows ground-sens-

ing capability, provides ultra-low CMOS input bias current

and increased common-mode rejection performance.

• Low 0.2μV/°C Offset Voltage Drift

• 1pA CMOS Input Bias Current

• True Ground Sensing with Rail-to-Rail Output

• 750kHz Gain-Bandwidth Product

● Buffered REF Input for High Accuracy and Bipolar

Operation

The MAX4208/MAX4209 provide high-impedance inputs

optimized for small-signal differential voltages (±100mV).

All devices provide a gain-bandwidth product of 750kHz.

● Low Power Operation Supports Remote Sensing and

Battery-Powered Applications

• 2.85V to 5.5V Single-Supply Operation (or ±1.425V

to ±2.75V Dual Supplies)

• 750μA Supply Current

The MAX4208 provides an adjustable gain with two exter-

nal resistors or unity gain with FB connected to OUT. The

MAX4209 is available with a fixed gain of 100V/V with

±0.03% (typ) accuracy. Both devices include a reference

input (REF) to level-shift the output, allowing for bipolar sig-

nals in single-supply applications. In both devices, REFIN/

MODE is an input to a precision unity-gain buffer, which

sets the REF voltage to level-shift the output. The internal

REF buffer allows the reference to be set by a simple resis-

tive divider or an ADC reference without any loading error.

• 1.4μA Shutdown Mode

● Adjustable (MAX4208) and Fixed Gain of 100

(MAX4209) Provide Design Flexibility

Ordering Information

PIN-

PACKAGE

GAIN

(V/V)

PART

TEMP RANGE

The MAX4208/MAX4209 operate with a 2.85V to 5.5V

single-supply voltage and consume only 750μA of qui-

escent current (when the internal buffer is off) and only

1.4μA in shutdown mode. These amplifiers also operate

with ±2.5V dual supplies with REF connected to ground

MAX4208AUA+T

MAX4209HAUA+T

-40°C to +125°C 8 µMAX

ADJ

100

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

T = Tape and reel.

and REFIN/MODE to V . The MAX4208/MAX4209 are

available in space-saving 8-pin μMAX packages and

are specified over the automotive operating temperature

range (-40°C to +125°C).

Typical Application Circuit

Applications

● Strain-Gauge Ampliﬁers

● Industrial Process Control

IN-

V /2

● Battery-Powered Medical Equipment

● Precision Low-Side Current Sense

● Notebook Computers

IN+

OUT

REFIN/MODE

REF

● Differential Voltage Ampliﬁcation

MAX4208

G = 1 +

REF

BUFFER OUT =

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

19-0924; Rev 3; 5/15

12 3 4 5 6 7...17

中文翻译

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与MAX4209相关器件

型号	品牌	获取价格	描述	数据表
MAX4209HAUA+	MAXIM	获取价格	Buffer Amplifier, 1 Func, BICMOS, PDSO8,
MAX4209HAUA+T	MAXIM	获取价格	Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX4209KAUA+	MAXIM	获取价格	Configurable Reference Voltage: Externally or Internally Buffered
MAX4209KAUA+T	MAXIM	获取价格	Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX4209TAUA+	MAXIM	获取价格	Configurable Reference Voltage: Externally or Internally Buffered
MAX4209TAUA+T	MAXIM	获取价格	Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX420C/D	MAXIM	获取价格	【15 Volt Chopper Stabilized Operational Ampli
MAX420CPA	MAXIM	获取价格	【15 Volt Chopper Stabilized Operational Ampli
MAX420CPA+	MAXIM	获取价格	Operational Amplifier, 1 Func, 20uV Offset-Max, CMOS, PDIP8, PLASTIC, DIP-8
MAX420CPD	MAXIM	获取价格	【15 Volt Chopper Stabilized Operational Ampli

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