Datasheet AD8276, AD8277 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers |
| 页数 / 页 | 22 / 1 — Low Power, Wide Supply Range, Low Cost. Unity-Gain Difference Amplifiers. … |
| 修订版 | D |
| 文件格式/大小 | PDF / 485 Kb |
| 文件语言 | 英语 |
Low Power, Wide Supply Range, Low Cost. Unity-Gain Difference Amplifiers. Data Sheet. AD8276/. AD8277. FEATURES
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Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers Data Sheet AD8276/ AD8277 FEATURES FUNCTIONAL BLOCK DIAGRAMS Wide input range beyond supplies +VS 7 Rugged input overvoltage protection AD8276 40kΩ 40kΩ Low supply current: 200 μA maximum per channel 2 –IN 5 SENSE Low power dissipation: 0.54 mW at VS = 2.7 V Bandwidth: 550 kHz 6 OUT CMRR: 86 dB minimum, dc to 10 kHz 40kΩ 40kΩ System offset voltage: ±2 μV/°C maximum (B Grade) 3 1 +IN REF Low gain drift: 1 ppm/°C maximum (B Grade) 4
001
Enhanced slew rate: 1.1 V/μs –VS
07692-
Wide power supply range
Figure 1. AD8276
Single supply: 2.0 V to 36 V +VS Dual supplies: ±2 V to ±18 V 11 AD8277 40kΩ 40kΩ APPLICATIONS 2 –INA 12 SENSEA Voltage measurement and monitoring 13 OUTA Current measurement and monitoring Differential output instrumentation amplifier 40kΩ 40kΩ 3 14 +INA REFA Portable, battery-powered equipment Test and measurement 40kΩ 40kΩ 6 –INB 10 SENSEB GENERAL DESCRIPTION
The AD8276/AD8277 are general-purpose, unity-gain difference
9 OUTB
amplifiers intended for precision signal conditioning in power
40kΩ 40kΩ 5 8
critical applications that require both high performance and low
+INB REFB
052 power. They provide exceptional 86 dB common-mode rejection
4
07692-
–VS
ratio (CMRR) and high bandwidth while amplifying signals wel Figure 2. AD8277 beyond the supply rails. The on-chip resistors are laser trimmed for gain drift of 1 ppm/°C and high CMRR. The AD8276/AD8277 The AD8276 is available in the space-saving 8-lead mini small also have extremely low gain drift vs. temperature. outline package (MSOP) and the standard small outline (SOIC) The common-mode range of the amplifiers extends to almost package, as well as in die form, and the AD8277 is offered in a double the supply voltage, making these amplifiers ideal for 14-lead SOIC package. Both are specified for performance over the industrial temperature range of −40°C to +85°C and are single-supply applications that require a high common-mode voltage range. The internal resistors and electrostatic discharge fully RoHS compliant. (ESD) circuitry at the inputs also provide overvoltage protection
Table 1. Difference Amplifiers by Category
to the op amps.
Low High
The AD8276/AD8277 are unity-gain stable. Although they are
Distortion Voltage Current Sensing1 Low Power
optimized for use as difference amplifiers, they can also be AD8270 AD628 AD8202 (U) AD8276 connected in high precision, single-ended configurations with AD8271 AD629 AD8203 (U) AD8277 G = −1, +1, or +2. The AD8276/AD8277 provide an integrated AD8273 AD8205 (B) AD8278 precision solution that has smaller size, lower cost, and improved AD8274 AD8206 (B) performance than a discrete alternative. AMP03 AD8216 (B) The AD8276/AD8277 operate on single supplies (2.0 V to 36 V) 1 U means unidirectional, B means bidirectional. or dual supplies (±2 V to ±18 V). The maximum quiescent supply current is 200 μA per channel, which is ideal for battery- operated and portable systems.
Rev. D Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2009–2019 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Functional Block Diagrams Table of Contents Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation Short-Circuit Current ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Circuit Information DC Performance AC Performance Driving the AD8276/AD8277 Input Voltage Range Power Supplies Applications Information Configurations Differential Output Current Source Voltage and Current Monitoring Instrumentation Amplifier RTD Die Information Die Specifications and Assembly Recommendations Outline Dimensions Ordering Guide
001
Enhanced slew rate: 1.1 V/μs –VS
07692-
Wide power supply range
Figure 1. AD8276
Single supply: 2.0 V to 36 V +VS Dual supplies: ±2 V to ±18 V 11 AD8277 40kΩ 40kΩ APPLICATIONS 2 –INA 12 SENSEA Voltage measurement and monitoring 13 OUTA Current measurement and monitoring Differential output instrumentation amplifier 40kΩ 40kΩ 3 14 +INA REFA Portable, battery-powered equipment Test and measurement 40kΩ 40kΩ 6 –INB 10 SENSEB GENERAL DESCRIPTION
The AD8276/AD8277 are general-purpose, unity-gain difference
9 OUTB
amplifiers intended for precision signal conditioning in power
40kΩ 40kΩ 5 8
critical applications that require both high performance and low
+INB REFB
052 power. They provide exceptional 86 dB common-mode rejection
4
07692-
–VS
ratio (CMRR) and high bandwidth while amplifying signals wel Figure 2. AD8277 beyond the supply rails. The on-chip resistors are laser trimmed for gain drift of 1 ppm/°C and high CMRR. The AD8276/AD8277 The AD8276 is available in the space-saving 8-lead mini small also have extremely low gain drift vs. temperature. outline package (MSOP) and the standard small outline (SOIC) The common-mode range of the amplifiers extends to almost package, as well as in die form, and the AD8277 is offered in a double the supply voltage, making these amplifiers ideal for 14-lead SOIC package. Both are specified for performance over the industrial temperature range of −40°C to +85°C and are single-supply applications that require a high common-mode voltage range. The internal resistors and electrostatic discharge fully RoHS compliant. (ESD) circuitry at the inputs also provide overvoltage protection
Table 1. Difference Amplifiers by Category
to the op amps.
Low High
The AD8276/AD8277 are unity-gain stable. Although they are
Distortion Voltage Current Sensing1 Low Power
optimized for use as difference amplifiers, they can also be AD8270 AD628 AD8202 (U) AD8276 connected in high precision, single-ended configurations with AD8271 AD629 AD8203 (U) AD8277 G = −1, +1, or +2. The AD8276/AD8277 provide an integrated AD8273 AD8205 (B) AD8278 precision solution that has smaller size, lower cost, and improved AD8274 AD8206 (B) performance than a discrete alternative. AMP03 AD8216 (B) The AD8276/AD8277 operate on single supplies (2.0 V to 36 V) 1 U means unidirectional, B means bidirectional. or dual supplies (±2 V to ±18 V). The maximum quiescent supply current is 200 μA per channel, which is ideal for battery- operated and portable systems.
Rev. D Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2009–2019 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Functional Block Diagrams Table of Contents Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation Short-Circuit Current ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Circuit Information DC Performance AC Performance Driving the AD8276/AD8277 Input Voltage Range Power Supplies Applications Information Configurations Differential Output Current Source Voltage and Current Monitoring Instrumentation Amplifier RTD Die Information Die Specifications and Assembly Recommendations Outline Dimensions Ordering Guide