参数资料
型号: AD8572AR-REEL7
厂商: Analog Devices Inc
文件页数: 1/24页
文件大小: 0K
描述: IC OPAMP CHOPPER R-R DUAL 8SOIC
标准包装: 1,000
放大器类型: 断路器(零漂移)
电路数: 2
输出类型: 满摆幅
转换速率: 0.4 V/µs
增益带宽积: 1.5MHz
电流 - 输入偏压: 10pA
电压 - 输入偏移: 1µV
电流 - 电源: 850µA
电流 - 输出 / 通道: 30mA
电压 - 电源,单路/双路(±): 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SO
包装: 带卷 (TR)
Zero-Drift, Single-Supply, Rail-to-Rail
Input/Output Operational Amplifiers
AD8571/AD8572/AD8574
Rev. E
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rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
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FEATURES
Low offset voltage: 1 μV
Input offset drift: 0.005 μV/°C
Rail-to-rail input and output swing
5 V/2.7 V single-supply operation
High gain: 145 dB typical
CMRR: 140 dB typical
PSRR: 130 dB typical
Ultralow input bias current: 10 pA typical
Low supply current: 750 μA per op amp
Overload recovery time: 50 μs
No external capacitors required
APPLICATIONS
Temperature sensors
Pressure sensors
Precision current sensing
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
GENERAL DESCRIPTION
This family of amplifiers has ultralow offset, drift, and bias
current. The AD8571, AD8572, and AD8574 are single, dual,
and quad amplifiers, respectively, featuring rail-to-rail input
and output swings. All are guaranteed to operate from 2.7 V to
5 V single supply.
The AD857x family provides benefits previously found only in
expensive auto-zeroing or chopper-stabilized amplifiers. Using
Analog Devices, Inc., topology, these zero-drift amplifiers
combine low cost with high accuracy. (No external capacitors
are required.) Using a patented spread-spectrum, auto-zero
technique, the AD857x family eliminates the intermodulation
effects from interaction of the chopping function with the
signal frequency in ac applications.
With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the
AD857x family is perfectly suited for applications where error
sources cannot be tolerated. Position and pressure sensors,
medical equipment, and strain gage amplifiers benefit greatly
from nearly zero drift over their operating temperature range.
Many more systems require the rail-to-rail input and output
swings provided by the AD857x family.
PIN CONFIGURATIONS
V+
OUT A
NC
NC = NO CONNECT
–IN A
+IN A
V–
NC
8
7
6
5
1
2
3
4
AD8571
TOP VIEW
(Not to Scale)
0
11
04
-00
1
Figure 1. 8-Lead MSOP (RM Suffix)
NC = NO CONNECT
AD8571
TOP VIEW
(Not to Scale)
NC 1
–IN A 2
+IN A 3
V– 4
NC
V+
OUT A
NC
8
7
6
5
01
10
4-
0
04
Figure 2. 8-Lead SOIC (R Suffix)
–IN A
+IN A
V–
OUT B
–IN B
+IN B
OUT A
V+
1
2
3
4
8
7
6
5
AD8572
TOP VIEW
(Not to Scale)
01
10
4-
00
2
Figure 3. 8-Lead TSSOP (RU Suffix)
–IN A
+IN A
V–
OUT B
–IN B
+IN B
OUT A
V+
1
2
3
4
8
7
6
5
AD8572
TOP VIEW
(Not to Scale)
01
10
4-
00
5
Figure 4. 8-Lead SOIC (R Suffix)
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
OUT D
–IN D
+IN D
V–
+IN C
14
13
12
11
10
–IN B 6
OUT B 7
–IN C
OUT C
9
8
AD8574
TOP VIEW
(Not to Scale)
01
10
4-
0
03
Figure 5. 14-Lead TSSOP (RU Suffix)
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
OUT D
–IN D
+IN D
V–
+IN C
14
13
12
11
10
–IN B 6
OUT B 7
–IN C
OUT C
9
8
AD8574
TOP VIEW
(Not to Scale)
0
1104
-0
06
Figure 6. 14-Lead SOIC (R Suffix)
The AD857x family is specified for the extended industrial/
automotive temperature range (40°C to +125°C). The AD8571
single amplifier is available in 8-lead MSOP and narrow SOIC
packages. The AD8572 dual amplifier is available in 8-lead narrow
SOIC and surface-mount TSSOP packages. The AD8574 quad
amplifier is available in 14-lead narrow SOIC and TSSOP packages.
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