Datasheet > MAX4208_09

MAX4208_09

更新时间： 2024-01-18 10:08:29

品牌	Logo	应用领域
美信 - MAXIM		仪表放大器
页数	文件大小	规格书
17页	218K
描述
Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer

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MAX4208_09 数据手册

19-0924; Rev 1; 4/09

Ultra-Low Offset/Drift, Precision

Instrumentation Amplifiers with REF Buffer

General Description

Features

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

mentation amplifiers feature exceptional precision specifi-

cations, low power consumption, rail-to-rail output,

excellent gain-bandwidth product, and buffered

REFIN/MODE input in a very small µMAX^®package.

These devices use a patented^†spread-spectrum,

autozeroing technique that constantly measures and

corrects the input offset, eliminating drift over time and tem-

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

achieves less than 20µV offset voltage, allows ground-

sensing capability, provides ultra-low CMOS input bias cur-

rent and increased common-mode rejection performance.

♦ Ultra-Low Input Offset Voltage

±±2µV (max) at +±5°C

♦ ±20±5ꢀ (max) ꢁaꢂn ꢃrror

♦ Low 20±µV/°C Offset Voltage Drꢂft

♦ 1pA CMOS Input Bꢂas Current

♦ True ꢁround Sensꢂng wꢂth Raꢂl-to-Raꢂl Output

♦ Buffered RꢃF Input for Hꢂgh Accuracy and

Bꢂpolar Operatꢂon

♦ ±085V to 505V Sꢂngle-Supply Operatꢂon

(or ±10.±5V to ±±0ꢄ5V Dual Supplꢂes)

The MAX4208/MAX4209 provide high-impedance inputs

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

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

♦ ꢄ52µA Supply Current

♦ 10.µA Shutdown Mode

The MAX4208 provides an adjustable gain with two

external resistors or unity gain with FB connected to OUT.

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

0.0ꢀ3 (typ) accuracy. Both devices include a reference

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

signals 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 resistive divider or an ADC reference without any

loading error.

♦ ꢄ52kHz ꢁaꢂn-Bandwꢂdth Product

♦ Operate Over the -.2°C to +1±5°C Automotꢂve

Temperature Range

♦ Tꢂny 8-Pꢂn µMAX Package

Ordering Information

PIN-

ꢁAIN

PART

TꢃMP RANꢁꢃ

PACKAꢁꢃ (V/V)

MAX.±28AUA+T

-40°C to +125°C

8 µMAX

ADJ

100

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

single-supply voltage and consume only 750µA

of quiescent 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

MAX.±29HAUA+T -40°C to +125°C

Note: All 8-pin µMAX packages have package code U8-1.

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

connected to ground and REFIN/MODE to V

The MAX4208/MAX4209 are available in space-saving

8-pin µMAX packages and are specified over the auto-

motive operating temperature range (-40°C to +125°C).

Typical Application Circuit

†

US Patent #6,847,257.

Applications

Automotive Transducer Applications

IN-

Strain-Gauge Amplifiers

IN+

OUT

Industrial Process Control

REFIN/MODE

Battery-Powered Medical Equipment

Precision Low-Side Current Sense

Notebook Computers

REF

MAX4208

Differential Voltage Amplification

G = 1 +

REF

BUFFER OUT =

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

________________________________________________________________ Maxim Integrated Products

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.

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与MAX4208_09相关器件

型号	品牌	获取价格	描述	数据表
MAX4208AUA+	MAXIM	获取价格	Buffer Amplifier, 1 Func, BICMOS, PDSO8,
MAX4208AUA+T	MAXIM	获取价格	Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX4208ESA	MAXIM	获取价格	Buffer Amplifier, 1 Func, PDSO8, SO-8
MAX4208EVKIT	MAXIM	获取价格	Configurable Reference Voltage: Externally or Internally Buffered
MAX4208EVKIT+	MAXIM	获取价格	Configurable Reference Voltage: Externally or Internally Buffered
MAX4209	MAXIM	获取价格	Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX4209	ADI	获取价格	超低失调/漂移、高精度仪表放大器，提供REF缓冲器
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

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