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| 型号： | AD8295BCPZ-WP |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC IN AMP PREC FE +/-18V 16LFCSP |
| 标准包装： | 64 |
| 放大器类型： | 仪表 |
| 电路数： | 3 |
| 转换速率： | 2 V/µs |
| 增益带宽积： | 1MHz |
| -3db带宽： | 1.2MHz |
| 电流 - 输入偏压： | 200pA |
| 电压 - 输入偏移： | 60µV |
| 电流 - 电源： | 2mA |
| 电流 - 输出 / 通道： | 18mA |
| 电压 - 电源，单路/双路(±)： | 4.6 V ~ 36 V，±2.3 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN，CSP |
| 供应商设备封装： | 16-LFCSP（4x4） |
| 包装： | 托盘 - 晶粒 |
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Precision Instrumentation Amplifier
with Signal Processing Amplifiers
AD8295
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
2008–2009 Analog Devices, Inc. All rights reserved.
FEATURES
Saves board space
Includes precision in-amp, 2 op amps, and
2 matched resistors
4 mm × 4 mm LFCSP
No heat slug for more routing room
Differential output fully specified
In-amp specifications
Gain set with 1 external resistor (gain range: 1 to 1000)
Input voltage noise: 8 nV/√Hz maximum at 1 kHz
CMRR (G = 1): 90 dB minimum
Input bias current: 0.8 nA maximum
3 dB bandwidth (G = 1): 1.2 MHz
Slew rate: 2 V/μs
Wide power supply range: ±2.3 V to ±18 V
1 ppm/°C, 0.03% resistor matching
APPLICATIONS
Industrial process controls
Wheatstone bridges
Precision data acquisition systems
Medical instrumentation
Strain gages
Transducer interfaces
Differential output
CONNECTION DIAGRAM
A1 OUT
A1 R2
A2 +IN
A2 –IN
–IN
RG
+VS
–VS
OUT
REF
RG
+IN
16
15
14
13
1
2
3
4
8
7
6
5
A1
IA
A2
R1
20k
R2
20k
A2 OUT
AD8295
A1 +IN
A1 R1
A1 –IN
12
11
10
9
07
34
3-
00
1
Figure 1.
Table 1. Instrumentation Amplifiers by Category1
General-
Purpose
Zero
Drift
Military
Grade
Low
Power
High Speed
PGA
AD8295
1 See www.analog.com for the latest selection of instrumentation amplifiers.
GENERAL DESCRIPTION
The AD8295 contains all the components necessary for a
precision instrumentation amplifier front end in one small
4 mm × 4 mm package. It contains a high performance
instrumentation amplifier, two general-purpose operational
amplifiers, and two precisely matched 20 kΩ resistors.
The AD8295 is designed to make PCB routing easy and
efficient. The AD8295 components are arranged in a logical
way so that typical application circuits have short routes and
few vias. Unlike most chip scale packages, the AD8295 does not
have an exposed metal pad on the back of the part, which frees
additional space for routing and vias. The logical pin arrange-
ment and routing freedom enable the AD8295 to offer simple
pin-strapped solutions for complex systems in the equivalent
board space of a typical MSOP package.
The AD8295 includes a high performance, programmable gain
instrumentation amplifier. Gain is set from 1 to 1000 with a
single resistor. The low noise and excellent common-mode
rejection of the AD8295 enable the part to easily detect small
signals even in the presence of large common-mode interference.
For a similar instrumentation amplifier without the associated
sheet.
The AD8295 operates on both single and dual supplies and is
well suited for applications where ±10 V input voltages are
encountered. Performance is specified over the entire industrial
temperature range of 40°C to +85°C for all grades. The
AD8295 is operational from 40°C to +125°C; see the Typical
Performance Characteristics section for expected operation up
to 125°C.
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