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參數資料
| 型號： | AD8228BRZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP INST PREC LDRIFT LN 8SOIC |
| 標準包裝： | 2,500 |
| 放大器類型： | 儀表 |
| 電路數： | 1 |
| 轉換速率： | 2.5 V/µs |
| -3db帶寬： | 650kHz |
| 電流 - 輸入偏壓： | 400pA |
| 電壓 - 輸入偏移： | 50µV |
| 電流 - 電源： | 850µA |
| 電流 - 輸出 / 通道： | 18mA |
| 電壓 - 電源，單路/雙路(±)： | 4.6 V ~ 36 V，±2.3 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
Low Gain Drift
Precision Instrumentation Amplifier
AD8228
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2008 Analog Devices, Inc. All rights reserved.
FEATURES
Easy to use
Pin strappable gains of 10 and 100
Wide power supply range: ±2.3 V to ±18 V
DC specifications (B Grade, G = 10)
2 ppm/°C gain drift
0.02% gain error
50 μV maximum input offset voltage
0.8 μV/°C maximum input offset drift
0.6 nA maximum input bias current
100 dB CMRR
AC specifications
650 kHz, –3 dB bandwidth (G = 10)
2 V/μs slew rate
Low noise
8 nV/√Hz, @ 1 kHz (G = 100)
0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100)
APPLICATIONS
Weigh scales
Industrial process controls
Bridge amplifiers
Precision data acquisition systems
Medical instrumentation
Strain gages
Transducer interfaces
GENERAL DESCRIPTION
The AD8228 is a high performance instrumentation amplifier
with very high gain accuracy. Because all gain setting resistors
are internal and laser trimmed, gain accuracy and gain drift
are better than can be achieved with typical instrumentation
amplifiers.
Low voltage offset, low offset drift, low gain drift, high gain
accuracy, and high CMRR make this part an excellent choice
in applications that demand the best dc performance possible,
such as bridge signal conditioning.
CONNECTION DIAGRAM
8
7
6
5
1
2
3
4
–IN
G1
G2
+VS
VOUT
REF
–VS
+IN
TOP VIEW
(Not to Scale)
AD8228
07
03
5-
0
01
Figure 1.
Table 1. Instrumentation Amplifiers by Category
General
Purpose
Zero
Drift
Military
Grade
Low
Power
High Speed
PGA
1 Rail-to-rail output.
The AD8228 operates on both single and dual supplies. Because
the part can operate on supplies up to ±18 V, it is well suited for
applications where high common-mode input voltages are
encountered. The AD8228 is available in 8-lead MSOP and
SOIC packages.
Performance is specified over the entire industrial temperature
range of 40°C to +85°C for all grades. Furthermore, the AD8228
is operational from 40°C to +125°C. For a pin-compatible ampli-
fier with similar specifications, but with a gain range of 1 to 1000,
see the AD8221.
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