Precision, Low Cost, High Speed BiFET Dual Op Amp Data Sheet AD712 FEATURES CONNECTION DIAGRAM AMPLIFIER NO. 1 AMPLIFIER NO. 2 Enhanced replacement for LF412 and TL082 OUTPUT 1 8 V+ AC performance Settles to 0.01% in 1.0 s INVERTING 2 7 OUTPUT INPUT 16 V/s minimum slew rate (AD712J) NONINVERTING INVERTING 3 6 INPUT INPUT 3 MHz minimum unity-gain bandwidth (AD712J) NONINVERTING V 4 5 DC performance INPUT AD712 200 V/mV minimum open-loop gain (AD712K) Figure 1. 8-Lead PDIP (N-Suffix), Surface mount available in tape and reel in SOIC N (R-Suffix), and CERDIP (Q-Suffix) accordance with the EIA-481A standard MIL-STD-883B parts available Single version available: AD711 Quad version: AD713 Available in PDIP, SOIC N, and CERDIP packages GENERAL DESCRIPTION The AD712 is a high speed, precision, monolithic operational Extended reliability PLUS screening is available, specified amplifier offering high performance at very modest prices. The over the commercial and industrial temperature ranges. PLUS very low offset voltage and offset voltage drift are the results of screening includes 168-hour burn-in, in addition to other advanced laser wafer trimming technology. These performance environmental and physical tests. benefits allow the user to easily upgrade existing designs that The AD712 is available in 8-lead PDIP, SOIC N, and CERDIP use older precision BiFETs and, in many cases, bipolar op amps. packages. The superior ac and dc performance of this op amp makes it PRODUCT HIGHLIGHTS suitable for active filter applications. With a slew rate of 16 V/s 1. The AD712 offers excellent overall performance at very and a settling time of 1 s to 0.01%, the AD712 is ideal as a buffer for 12-bit digital-to-analog converters (DACs) and analog- competitive prices. to-digital converters (ADCs) and as a high speed integrator. 2. The Analog Devices, Inc., advanced processing technology The settling time is unmatched by any similar IC amplifier. and 100% testing guarantee a low input offset voltage (3 mV maximum, J grade). Input offset voltage is specified in the The combination of excellent noise performance and low input warmed-up condition. current also make the AD712 useful for photo diode preamps. 3. Together with precision dc performance, the AD712 offers Common-mode rejection of 88 dB and open-loop gain of excellent dynamic response. It settles to 0.01% in 1 s and 400 V/mV ensure 12-bit performance even in high speed has a minimum slew rate of 16 V/s. Thus, this device is unity-gain buffer circuits. ideal for applications such as DAC and ADC buffers that require a combination of superior ac and dc performance. The AD712 is pinned out in a standard op amp configuration and is available in seven performance grades. The AD712J and AD712K are rated over the commercial temperature range of 0C to 70C. The AD712A is rated over the industrial tempera- ture range of 40C to +85C. The AD712S is rated over the military temperature range of 55C to +125C and is available processed to MIL-STD-883B, Rev. C. Rev. I 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 19862018 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. 00823-001AD712 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .............................................................. 14 Connection Diagram ....................................................................... 1 Guarding ...................................................................................... 14 General Description ......................................................................... 1 DAC Converter Applications .................................................... 14 Product Highlights ........................................................................... 1 Noise Characteristics ................................................................. 15 Revision History ............................................................................... 2 Driving the Analog Input of an ADC ...................................... 15 Specifications ..................................................................................... 3 Driving a Large Capacitive Load .............................................. 16 Absolute Maximum Ratings ............................................................ 5 Filters ................................................................................................ 17 Thermal Resistance ...................................................................... 5 Active Filter Applications .......................................................... 17 ESD Caution .................................................................................. 5 Second-Order Low-Pass Filter.................................................. 17 Typical Performance Characteristics ............................................. 6 9-Pole Chebychev Filter ............................................................. 18 Settling Time ................................................................................... 11 Outline Dimensions ....................................................................... 19 Optimizing Settling Time .......................................................... 11 Ordering Guide .......................................................................... 20 Op Amp Settling TimeA Mathematical Model .................. 12 REVISION HISTORY 7/2002Rev. D to Rev. E 11/2018Rev. H to Rev. I Edits to Features .................................................................................1 Added Thermal Resistance Section and Table 3 .......................... 5 Changes to Table 2 ............................................................................ 5 9/2001Rev. C to Rev. D Changes to Ordering Guide .......................................................... 20 Edits to Features .................................................................................1 Edits to General Description ........................................................... 1 7/2010Rev. G to Rev. H Edits to Connection Diagram .......................................................... 1 Changes to Product Title ................................................................. 1 Edits to Ordering Guide ................................................................... 3 Added Input Voltage Noise Parameter, Input Current Noise Deleted Metallization Photograph .................................................. 3 Parameter, and Open-Loop Gain Parameter, Table 1 .................. 4 Edits to Absolute Maximum Ratings ............................................. 3 Moved Figure 29 and Figure 30 .................................................... 11 Edits to Figure 7 ................................................................................. 9 Moved Figure 34 ............................................................................. 12 Edits to Outline Dimensions ......................................................... 15 Moved Figure 44 and Figure 45 .................................................... 15 Changes to Ordering Guide .......................................................... 20 8/2006Rev. F to Rev. G Edits to Figure 1 ................................................................................ 1 Change to 9-Pole Chebychev Filter Section ................................ 18 6/2006Rev. E to Rev. F Updated Format .................................................................. Universal Deleted B, C, and T Models............................................... Universal Changes to General Description .................................................... 1 Changes to Product Highlights ....................................................... 1 Changes to Specifications Section .................................................. 3 Changes to Figure 43 ...................................................................... 15 Rev. I Page 2 of 20