参数资料
型号: ADA4638-1ACPZ-R7
厂商: Analog Devices Inc
文件页数: 1/25页
文件大小: 0K
描述: IC OPAMP RRO ZERO DRIFT 8LFCSP
标准包装: 1
放大器类型: 零漂移
电路数: 1
输出类型: 满摆幅
转换速率: 1.5 V/µs
增益带宽积: 1.5MHz
-3db带宽: 2.5MHz
电流 - 输入偏压: 45pA
电压 - 输入偏移: 0.5µV
电流 - 电源: 850µA
电流 - 输出 / 通道: 38mA
电压 - 电源,单路/双路(±): 4.5 V ~ 30 V,±2.25 V ~ 15 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-WFDFN 裸露焊盘,CSP
供应商设备封装: 8-LFCSP-WD(3x3)
包装: 标准包装
其它名称: ADA4638-1ACPZ-R7DKR
30 V Zero-Drift, Rail-to-Rail Output
Precision Amplifier
Data Sheet
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
2011 Analog Devices, Inc. All rights reserved.
FEATURES
Single supply operation: 4.5 V to 30 V
Dual supply operation: ±2.25 V to ±15 V
Low offset voltage: 4 μV maximum
Input offset voltage drift: 0.05 μV/°C maximum
High gain: 130 dB minimum
High PSRR: 120 dB minimum
High CMRR: 130 dB minimum
Input common-mode range includes lower supply rail
Rail-to-rail output
Low supply current: 0.95 mA maximum
APPLICATIONS
Electronic weigh scale
Pressure and position sensors
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
PIN CONFIGURATIONS
NC 1
–IN 2
+IN 3
V– 4
NC
8
V+
7
OUT
6
NC
5
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
ADA4638-1
TOP VIEW
(Not to Scale)
100
72
-00
1
Figure 1. 8-Lead SOIC
10
07
2-
0
02
ADA4638-1
TOP VIEW
(Not to Scale)
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD BE
CONNECTED TO V–.
3
+IN
4
V–
1
NC
2
–IN
6OUT
5NC
8NC
7V+
Figure 2. 8-Lead LFCSP
GENERAL DESCRIPTION
The ADA4638-1 is a high voltage, high precision, zero-drift
amplifier featuring rail-to-rail output swing. It is guaranteed to
operate from 4.5 V to 30 V single supply or ±2.25 V to ±15 V
dual supplies while consuming less than 0.95 mA of supply
current at ±5 V.
With an offset voltage of 4 μV, offset drift less than 0.05 μV/°C,
no 1/f noise, and input voltage noise of only 1.2 μV p-p (0.1 Hz
to 10 Hz), the ADA4638-1 is suited for high precision applications
where large error sources cannot be tolerated. Pressure sensors,
medical equipment, and strain gage amplifiers benefit greatly
from nearly zero drift over the wide operating temperature
range. Many applications can take advantage of the rail-to-rail
output swing provided by the ADA4638-1 to maximize the signal-
to-noise ratio (SNR).
The ADA4638-1 is specified for the extended industrial (40°C
to +125°C) temperature range and is available in 8-lead LFCSP
(3 mm × 3 mm) and SOIC packages.
Table 1. Analog Devices, Inc., Zero-Drift Op Amp Portfolio
Operating
Voltage
Type
Product
Offset
Voltage
(μV) Max
Offset
Voltage Drift
(μV/°C) Max
30 V
Single
0.08
Single
0.06
16 V
Dual
0.06
0.015
0.02
0.1
Single
0.1
5
0.02
13
0.1
Dual
15
0.1
5 V
Quad
5
0.02
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