Low Noise, Precision Instrumentation Amplifier Data Sheet AMP01 changes have minimal effect on offset TCVIOS is typically FEATURES 0.15 V/C. Excellent low frequency noise performance is Low offset voltage: 50 V maximum achieved with a minimal compromise on input protection. The Very low offset voltage drift: 0.3 V/C maximum bias current is very low, less than 10 nA over the military Low noise: 0.12 V p-p (0.1 Hz to 10 Hz) temperature range. High common-mode rejection of 130 dB, Excellent output drive: 10 V at 50 mA 16-bit linearity at a gain of 1000, and 50 mA peak output Capacitive load stability: up to 1 F current are achievable simultaneously. This combination takes Gain range: 0.1 to 10,000 the instrumentation amplifier one step further towards the Excellent linearity: 16-bit at G = 1000 ideal amplifier. High CMR: 125 dB minimum (G = 1000) Low bias current: 4 nA maximum AC performance complements the superb dc specifications. The Can be configured as a precision op amp AMP01 slews at 4.5 V/s into capacitive loads of up to 15 nF, settles Output-stage thermal shutdown in 50 s to 0.01% at a gain of 1000, and boasts a healthy 26 MHz Available in die form gain bandwidth product. These features make the AMP01 ideal for high speed data acquisition systems. GENERAL DESCRIPTION The gain is set by the ratio of two external resistors over a range of 1 The AMP01 is a monolithic instrumentation amplifier 0.1 to 10,000. A very low gain temperature coefficient of designed for high-precision data acquisition and instrumen- 10 ppm/C is achievable over the whole gain range. Output tation applications. The design combines the conventional voltage swing is guaranteed with three load resistances: 50 , features of an instrumentation amplifier with a high current 500 , and 2 k. Loaded with 500 , the output delivers output stage. The output remains stable with high capacitance 13.0 V minimum. A thermal shutdown circuit prevents loads (1 F), a unique ability for an instrumentation amplifier. destruction of the output transistors during overload Consequently, the AMP01 can amplify low level signals for conditions. transmission through long cables without requiring an output buffer. The output stage can be configured as a voltage or The AMP01 can also be configured as a high performance current generator. operational amplifier. In many applications, the AMP01 can be used in place of op amp/power buffer combinations. Input offset voltage is very low (20 V), which generally eliminates the external null potentiometer. Temperature FUNCTIONAL BLOCK DIAGRAM V+ V IOS NULL +V OP A1 OUTPUT 250 V IN OP 250 +IN Q1 Q2 REFERENCE R1 47.5k R3 R G 47.5k SENSE A2 A3 R S R2 R4 V OOS 2.5k 2.5k NULL V Figure 1. 1 Protected under U.S. Patents 4,471,321 and 4,503,381. Rev. F 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 14335-004AMP01 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Bias and Offset Currents ................................................. 18 General Description ......................................................................... 1 Gain .............................................................................................. 18 Functional Block Diagram .............................................................. 1 Common-Mode Rejection ........................................................ 19 Revision History ............................................................................... 2 Active Guard Drive .................................................................... 19 Specif icat ions ..................................................................................... 3 Grounding ................................................................................... 19 Electrical Characteristics ............................................................. 3 Sense and Reference Terminals ................................................ 20 Dice Characteristics ..................................................................... 8 Driving 50 Loads .................................................................... 21 Wafer Test Limits (AMP01NBC) ............................................... 9 Heatsinking ................................................................................. 22 Absolute Maximum Ratings .......................................................... 10 Overvoltage Protection .............................................................. 22 Thermal Resistance .................................................................... 10 Power Supply Considerations ................................................... 22 ESD Caution ................................................................................ 10 Applications Circuits ...................................................................... 23 Pin Configurations and Function Descriptions ......................... 11 Outline Dimensions ....................................................................... 29 Typical Performance Characteristics ........................................... 13 Ordering Guide .......................................................................... 29 Theory of Operation ...................................................................... 18 Input and Output Offset Voltages ............................................ 18 REVISION HISTORY 12/2019Rev. E to Rev. F Deleted Figure 5 ................................................................................. 9 Changes to Table 7 .......................................................................... 10 Deleted Table 6 Renumbered Sequentially ................................ 10 Changes to Ordering Guide .......................................................... 29 Added Table 6 and Table 7 Renumbered Sequentially ............. 10 Added Pin Configurations and Function Descriptions Section, 1/2017Rev. D to Rev. E Figure 3, and Table 8 ...................................................................... 11 Updated Format .................................................................. Universal Added Figure 4 and Table 9 .......................................................... 12 Deleted E-28A Package ...................................................... Universal Changes to Input and Output Offset Voltages Section and Changed R-20 Package to RW-20 Package ...................... Universal Gain Section .................................................................................... 18 Deleted Pin Connections Section and Figure 1 to Figure 3 Changes to Power Supply Considerations Section .................... 22 Renumbered Sequentially ................................................................ 1 Added Applications Circuits Section ........................................... 29 Added Functional Block Diagram Section and Figure 1 Updated Package Drawings .......................................................... 29 Renumbered Sequentially ................................................................ 1 Changes to Ordering Guide .......................................................... 29 Changes to Figure 2 .......................................................................... 8 Changes to Table 5 ............................................................................ 9 Rev. F Page 2 of 29