參數(shù)資料
型號： MAX4208
廠商： Maxim Integrated Products, Inc.
元件分類： 運動控制電子
英文描述： Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
中文描述： 超低失調(diào)/漂移、高精度儀表放大器，提供REF緩沖器
文件頁數(shù)： 1/17頁
文件大小： 263K
代理商： MAX4208
General Description
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.
The MAX4208/MAX4209 provide high-impedance inputs
optimized for small-signal differential voltages (±100mV).
All devices provide a gain-bandwidth product of 750kHz.
The MAX4208 provides an adjustable gain with two
external resistors or unity gain with FB connected to OUT.
The MAX4209 is available in fixed gains of 10V/V, 100V/V,
or 1000V/V (suffixed T, H, and K) with ±0.03% (typ) accu-
racy. 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.
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
connected to ground and REFIN/MODE to V
SS
.
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).
US Patent #6,847,257.
Applications
Automotive Transducer Applications
Strain-Gauge Amplifiers
Industrial Process Control
Battery-Powered Medical Equipment
Precision Low-Side Current Sense
Notebook Computers
Differential Voltage Amplification
Features
Ultra-Low Input Offset Voltage
±20
μ
V (max) at +25°C
±0.25% (max) Gain Error
Low 0.2
μ
V/°C Offset Voltage Drift
1pA CMOS Input Bias Current
True Ground Sensing with Rail-to-Rail Output
Buffered REF Input for High Accuracy and
Bipolar Operation
2.85V to 5.5V Single-Supply Operation
(or ±1.425V to ±2.75V Dual Supplies)
750
μ
A Supply Current
1.4
μ
A Shutdown Mode
750kHz Gain-Bandwidth Product
Operate Over the -40°C to +125°C Automotive
Temperature Range
Tiny 8-Pin
μ
MAX Package
Note:
All 8-pin μMAX packages have package code U8-1.
+Denotes a lead-free package.
*
Future product—contact factory for availability.
M
Ultra-Low Offset/Drift, Precision
Instrumentation Amplifiers with REF Buffer
________________________________________________________________
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.
1
Ordering Information
19-0924; Rev 0; 9/07
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
GAIN
(V/V)
MAX4208
AUA+T
MAX4209
TAUA+T*
MAX4209HAUA+T
MAX4209KAUA+T*
-40°C to +125°C 8 μMAX-8
-40°C to +125°C 8 μMAX-8
-40°C to +125°C 8 μMAX-8
-40°C to +125°C 8 μMAX-8
ADJ
10
100
1000
μMAX is a registered trademark of Maxim Integrated Products, Inc.
IN-
IN+
REFIN/MODE
REF
FB
MAX4208
R4
R3
V
DD
V
SS
C
FB
5V
OUT
REF
R2
FB
R1
G = 1 + R2
R1
BUFFER OUT =
V
DD
/2
V
DD
/2
Typical Application Circuit
相關(guān)PDF資料
PDF描述
MAX4209 Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
MAX4215ESA High-Speed, Single-Supply, Gain of @, Closed-Loop, Rail-to-Rail Buffers with Enable
MAX4219EEE High-Speed, Single-Supply, Gain of @, Closed-Loop, Rail-to-Rail Buffers with Enable
MAX4217ESA High-Speed, Single-Supply, Gain of @, Closed-Loop, Rail-to-Rail Buffers with Enable
MAX4214 High-Speed, Single-Supply, Gain of @, Closed-Loop, Rail-to-Rail Buffers with Enable
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4208AUA+ 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
MAX4208AUA+T 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
MAX4208EVKIT+ 功能描述:放大器 IC 開發(fā)工具 MAX4208 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
MAX4209EVKIT+ 功能描述:放大器 IC 開發(fā)工具 MAX4209 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
MAX4209HAUA+ 功能描述:儀表放大器 Low Offset/Drift Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
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