36 V, Low Noise, Zero Drift Op Amp Data Sheet ADA4523-1 FEATURES TYPICAL APPLICATION DIAGRAM Supply voltage range: 4.5 V to 36 V R1 R2 1k 750 Offset voltage: 4 V maximum at 5 V C2 R3 47nF 5.62k Offset voltage drift: 0.01 V/C maximum at 5 V 8V TO 12.6V Input noise 8V TO 36V C5 Voltage: 88 nV p-p from 0.1 Hz to 10 Hz typical 0.1F C4 0.1F R4 Spectral density voltage: 4.2 nV/Hz typical at 1 kHz C1 V 2 OUT 4.7F Rail-to-rail output C3 + LT6202 47F Unity-gain stable + ADA4523-1 GBP: 5 MHz typical Slew rate: 1.8 V/s typical falling 8V TO 13.2V PSRR: 168 dB typical at V = 4.5 V to 36 V S V V OUT F Open-loop voltage gain: 160 dB typical at V = 14.75 V to IN OUT R5 10k V +14.75 V, R = 10 k , V = 30 V SHDN L S OUT S C6 C7 C8 CMRR: 160 dB typical at V = 15.1 V to +13.5 V, V = 30 V CM S 0.1F 2.2F 20F LTC6655-5 (FILM) Integrated EMI filters Shutdown mode Figure 1. Precision Filtering Voltage Reference Buffer Ground sense Available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP The ADA4523-1 provides a rail-to-rail output swing and an input common-mode range that includes the V rail (V 0.1 V APPLICATIONS + to V 1.5 V). High resolution data acquisition 100 Reference buffering ADA4523-1 ADA4522-1 Test and measurement LTC2057 AD8628 Electronic scales Thermocouple amplifiers Strain gages Low-side current sense 10 GENERAL DESCRIPTION The ADA4523-1 is a high voltage, low noise, zero drift op amp that offers precision dc performance over a wide supply range of 4.5 V to 36 V. Offset voltage and 1/f noise are suppressed, allowing this op amp to achieve a maximum offset voltage of 1 4 V and a 0.1 Hz to 10 Hz input noise voltage of 88 nV p-p 0.01 0.1 1 10 100 1k 10k 100k FREQUENCY (Hz) typical. The self calibrating circuitry of the ADA4523-1 results in low offset voltage drift with temperature (0.01 V/C maximum) Figure 2. Input-Referred Voltage Noise Density vs. Frequency, Zero Drift Amplifier Family Comparison and zero drift over time. Additionally, the ADA4523-1 uses on-chip filtering to achieve high immunity to electromagnetic COMPANION PRODUCTS interference (EMI). Voltage References: LTC6655 and ADR4525 Wide supply range, combined with low noise, low offset, 168 dB Low Noise High Speed Amplifier: LT6202 power supply rejection ratio (PSRR), and 160 dB common-mode ADC: LTC2500-32 rejection ratio (CMRR), make the ADA4523-1 well suited for high Low Noise, Low Dropout Regulators: LT3093 and LT3042 dynamic range test, measurement, and instrumentation systems. Additional companion products for the ADA4523-1 can be found in the Related Products section. Rev. 0 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 2020 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com INPUT-REFERRED VOLTAGE NOISE DENSITY (nV/Hz) 21094-001 21094-102ADA4523-1 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Voltage Noise .................................................................... 20 Applications ....................................................................................... 1 Input Current Noise ................................................................... 20 General Description ......................................................................... 1 Input Bias Current ...................................................................... 20 Typical Application Diagram .......................................................... 1 Thermocouple Effects ................................................................ 21 Companion Products ....................................................................... 1 Power Dissipation....................................................................... 22 Revision History ............................................................................... 2 Electrical Overstress and Input Protection ................................. 23 Specifications ..................................................................................... 3 Shutdown Mode ......................................................................... 24 5 V Electrical Characteristics ...................................................... 3 Applications Information .............................................................. 25 30 V Electrical Characteristics .................................................... 5 Paralleling Choppers to Improve Noise .................................. 25 Absolute Maximum Ratings ............................................................ 7 Solder Pad Layouts ..................................................................... 26 Thermal Resistance ...................................................................... 7 Typical Application Circuit and Transfer Function ............... 26 ESD Caution .................................................................................. 7 Related Products ......................................................................... 27 Pin Configurations and Function Descriptions ........................... 8 Outline Dimensions ....................................................................... 28 Typical Performance Characteristics ........................................... 10 Ordering Guide .......................................................................... 29 Theory of Operation ...................................................................... 20 REVISION HISTORY 4/2020Revision 0: Initial Version Rev. 0 Page 2 of 29