Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers Data Sheet AD8027/AD8028 FEATURES PIN CONNECTION DIAGRAM AD8027 High speed DNC 1 8 DISABLE/SELECT IN 2 7 +V 190 MHz, 3 dB bandwidth (G = +1) S +IN 3 6 V OUT 100 V/s slew rate V 4 5 DNC S Low distortion 120 dBc at 1 MHz SFDR DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. 80 dBc at 5 MHz SFDR Figure 1. 8-Lead SOIC, AD8027 Selectable input crossover threshold Low noise See the Pin Configurations and Function Descriptions section 4.3 nV/Hz for additional pin configurations and information about the pin 1.6 pA/Hz functions. Low offset voltage: 900 V maximum Low power: 6.5 mA per amplifier supply current Power-down mode No phase reversal: V > V + 200 mV IN S Wide supply range: 2.7 V to 12 V Small packaging: 8-lead SOIC, 6-lead SOT-23, 10-lead MSOP With their wide supply voltage range (2.7 V to 12 V) and wide Qualified for automotive applications (AD8028WARMZ-R7 only) bandwidth (190 MHz), the AD8027/AD8028 amplifiers are designed to work in a variety of applications where speed and APPLICATIONS performance are needed on low supply voltages. The high per- Filters formance of the AD8027/AD8028 is achieved with a quiescent ADC drivers current of only 6.5 mA (typical) per amplifier. The AD8027/ Level shifting AD8028 have a shutdown mode that is controlled via Buffering DISABLE the /SELECT pin. Professional video Low voltage instrumentation The AD8027/AD8028 are available in 8-lead SOIC, 6-lead SOT-23, and 10-lead MSOP packages. The AD8028WARMZ-R7 is an GENERAL DESCRIPTION automotive grade version, qualified for automotive applications. 1 The AD8027/AD8028 are high speed amplifiers with rail-to-rail See the Automotive Products section for more details. The input and output that operate on low supply voltages and are AD8027/AD8028 family is designed to work over the extended optimized for high performance and a wide dynamic signal range. temperature range of 40C to +125C. The AD8027/AD8028 have low noise (4.3 nV/Hz, 1.6 pA/Hz) 20 G = +1 and low distortion (120 dBc at 1 MHz). In applications that use a FREQUENCY = 100kHz R = 1k fraction of or use the entire input dynamic range and require L 40 low distortion, the AD8027/AD8028 are ideal choices. 60 Many rail-to-rail input amplifiers have an input stage that switches V = +5V S V = +3V S from one differential pair to another as the input signal crosses V = 5V S 80 a threshold voltage, which causes distortion. The AD8027/AD8028 have a unique feature that allows the user to select the input 100 DISABLE crossover threshold voltage through the /SELECT pin DISABLE ( /SELECT x in the 10-lead MSOP, hereafter referred 120 to as DISABLE/SELECT throughout this data sheet). This feature controls the voltage at which the complementary transistor 140 input pairs switch. The AD8027/AD8028 also have intrinsically 0 1 2 3 4 5 6 7 8 9 10 OUTPUT VOLTAGE (V p-p) low crossover distortion. Figure 2. SFDR vs. Output Voltage 1 Protected by U.S. patent numbers 6,486,737B1 6,518,842B1. 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 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. 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Technical Support www.analog.com SFDR (dB) 03327-101 03327-063AD8027/AD8028 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Crossover Selection .................................................................... 20 Applications ....................................................................................... 1 Output Stage ................................................................................ 21 General Description ......................................................................... 1 DC Errors .................................................................................... 21 Pin Connection Diagram ................................................................ 1 Wideband Operation ..................................................................... 22 Revision History ............................................................................... 2 Circuit Considerations .............................................................. 22 Specifications ..................................................................................... 3 Applications Information .............................................................. 24 Absolute Maximum Ratings ............................................................ 7 DISABLE Using the /SELECT Pin ............................................ 24 Maximum Power Dissipation ..................................................... 7 Driving a 16-Bit ADC ................................................................ 24 ESD Caution .................................................................................. 7 Band-Pass Filter .......................................................................... 25 Pin Configuration and Function Descriptions ............................. 8 Design Tools and Technical Support ....................................... 25 Typical Performance Characteristics ........................................... 10 Outline Dimensions ....................................................................... 26 Test Circuit ...................................................................................... 19 Ordering Guide .......................................................................... 27 Theory of Operation ...................................................................... 20 Automotive Products ................................................................. 27 Input Stage ................................................................................... 20 REVISION HISTORY 7/15Rev. C to Rev. D Changes to Using the DISABLE/SELECT Pin Section and Changed SELECT to DISABLE/SELECT, NC to DNC, V to Table 6 .............................................................................................. 24 S+ +V , and V to V ....................................................... Throughout Changes to Figure 67 and Design Tools and Technical Support S S S Changes to Features Section, Figure 1, and General Description Section .............................................................................................. 25 Section ................................................................................................ 1 Updated Outline Dimensions ....................................................... 26 Changes to Table 1 ............................................................................ 3 Changes to Ordering Guide .......................................................... 27 Changes to Table 2 ............................................................................ 4 Added Automotive Products Section .......................................... 27 Changes to Table 3 ............................................................................ 5 Added Pin Configurations and Function Descriptions Section 8 3/05Rev. B to Rev. C Added Figure 4, Figure 5, Table 5, and Table 6 Renumbered Updated Format .................................................................. Universal Sequentially ....................................................................................... 8 Change to Figure 1 ............................................................................ 1 Added Figure 6, Figure 7, Table 7, and Table 8 ............................. 9 Changes to Figure 10 Caption and Figure 13 Caption .............. 10 10/03Rev. A to Rev. B Changes to Figure 16 Caption and Figure 19 Caption .............. 11 Changes to Figure 1 ........................................................................... 1 Changes to Figure 20 Caption and Figure 21 ............................. 12 Changes to Figure 26 Caption....................................................... 13 8/03Rev. 0 to Rev. A Changes to Figure 36 and Figure 37............................................. 14 Addition of AD8028 ........................................................... Universal Changes to Figure 42 ...................................................................... 15 Changes to General Description ..................................................... 1 Changes to Figure 50 Caption....................................................... 17 Changes to Figure 1, Figure 3, Figure 4, Figure 8, Figure 13, Added Test Circuit Section and Figure 59 .................................. 19 Figure 15, Figure 17 .......................................................... 1, 6, 7, 8, 9 Changes to Theory of Operation Section .................................... 20 Changes to Figure 58, Figure 60 ............................................. 18, 20 Changes to Crossover Selection Section and Figure 61 ............ 21 Changes to Specifications ................................................................. 3 Changes to Wideband Operation Section, Figure 62, Figure 63, Updated Outline Dimensions ....................................................... 22 and Figure 64 ................................................................................... 22 Updated Ordering Guide .............................................................. 23 Changes to PCB Layout Section ................................................... 23 3/03Revision 0: Initial Version Rev. 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