Single Supply, Rail-to-Rail Low Power, FET-Input Op Amp Data Sheet AD824 FEATURES PIN CONFIGURATION Single supply operation: 3 V to 30 V OUT A 1 OUT D 14 Very low input bias current: 2 pA 2 IN D IN A 13 Wide input voltage range 3 AD824 +IN D +IN A 12 Rail-to-rail output swing TOP VIEW 4 V V+ 11 (Not to Scale) Low supply current per amplifier: 500 A 5 +IN C +IN B 10 Wide bandwidth: 2 MHz 6 IN C IN B 9 Slew rate: 2 V/s OUT C OUT B 7 8 No phase reversal Figure 1. 14-Lead SOIC (R Suffix) APPLICATIONS Photo diode preamplifier Battery powered instrumentation Power supply control and protection Medical instrumentation Remote sensors Low voltage strain gage amplifiers DAC output amplifier GENERAL DESCRIPTION The AD824 is a quad, FET input, single supply amplifier, The FET input combined with laser trimming provides an input featuring rail-to-rail outputs. The combination of FET inputs that has extremely low bias currents with guaranteed offsets and rail-to-rail outputs makes the AD824 useful in a wide below 1 mV. This enables high accuracy designs even with high variety of low voltage applications where low input current is source impedances. Precision is combined with low noise, a primary consideration. making the AD824 ideal for use in battery powered medical equipment. The AD824 is guaranteed to operate from a 3 V single supply up to 15 V dual supplies. AD824AR-3V parametric Applications for the AD824 include portable medical performance at 3 V is fully guaranteed. equipment, photo diode preamplifiers, and high impedance transducer amplifiers. Fabricated on Analog Devices, Inc., complementary bipolar process, the AD824 has a unique input stage that allows the The ability of the output to swing rail-to-rail enables designers input voltage to safely extend beyond the negative supply and to build multistage filters in single supply systems and maintain to the positive supply without any phase inversion or latch-up. high signal-to-noise ratios. The output voltage swings to within 15 mV of the supplies. The AD824 is specified over the extended industrial (40C to Capacitive loads to 350 pF can be handled without oscillation. +85C) temperature range and is available in narrow 14-lead SOIC package. Rev. E 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 2015 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 00875-001AD824 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Characteristics .................................................................. 12 Applications ....................................................................................... 1 Output Characteristics............................................................... 12 Pin Configuration ............................................................................. 1 Applications Information .............................................................. 13 General Description ......................................................................... 1 Single Supply Voltage-to-Frequency Converter ..................... 13 Revision History ............................................................................... 2 Single Supply Programmable Gain Instrumentation Amplifier ..................................................................................... 13 Specifications ..................................................................................... 3 3 V, Single Supply Stereo Headphone Driver ......................... 14 Electrical Specifications ............................................................... 3 Low Dropout Bipolar Bridge Driver ........................................ 14 Absolute Maximum Ratings ............................................................ 6 A 3.3 V/5 V Precision Sample-and-Hold Amplifier .............. 15 Thermal Resistance ...................................................................... 6 Outline Dimensions ....................................................................... 16 ESD Caution .................................................................................. 6 Ordering Guide .......................................................................... 16 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 12 REVISION HISTORY 4/15Rev. D to Rev. E Change to Figure 1 Caption ............................................................ 1 5/14Rev. C to Rev. D Updated Format .................................................................. Universal Removed 16-Lead SOIC Package (Throughout) .......................... 1 Deleted Wafer Test Limits Section ................................................. 5 Deleted AD824 SPICE Macro-model Section ............................ 15 Changes to Ordering Guide .......................................................... 16 2/03Rev. B to Rev. C Deleted N Package .............................................................. Universal Edits to General Description ........................................................... 1 Edits to Absolute Maximum Ratings ............................................. 5 Edits to Ordering Guide .................................................................. 5 Edits to Figure 4 .............................................................................. 12 Edits to Figure 8 .............................................................................. 13 Updated Outline Dimensions ....................................................... 16 1/02Rev. A to Rev. B Edits to Electrical Specifications ................................................. 2, 3 Edits to Absolute Maximum Ratings ............................................. 5 Edits to Ordering Guide .................................................................. 5 Deleted Dice Characteristics ........................................................... 5 Rev. E Page 2 of 16