Low Power, 350 MHz Voltage Feedback Amplifiers AD8038/AD8039 FEATURES FUNCTIONAL BLOCK DIAGRAM Low power: 1 mA supply current/amp AD8038 NC 1 8 DISABLE IN 2 7 +V High speed S +IN 3 6 V OUT 350 MHz, 3 dB bandwidth (G = +1) V 4 5 NC S 425 V/s slew rate Low cost NC = NO CONNECT Low noise Figure 1. 8-lead SOIC (R) 8 nV/Hz 100 kHz AD8038 V 1 600 fA/Hz 100 kHz 5 +V OUT S Low input bias current: 750 nA maximum V 2 S Low distortion +IN 3 4 IN 90 dB SFDR 1 MHz 65 dB SFDR 5 MHz Figure 2. 5-Lead SC70 (KS) Wide supply range: 3 V to 12 V AD8039 Small packaging: 8-lead SOT-23, 5-lead SC70, and 8-lead SOIC V 1 8 +V OUT1 S APPLICATIONS IN1 2 7 V OUT2 Battery-powered instrumentation +IN1 3 6 IN2 Filters V 4 5 +IN2 S A/D drivers NC = NO CONNECT Level shifting Figure 3. 8-Lead SOIC (R) and 8-Lead SOT-23 (RJ) Buffering Photo multipliers GENERAL DESCRIPTION The AD8038 (single) and AD8039 (dual) amplifiers are high speed The AD8039 amplifier is available in a 8-lead SOT-23 package, (350 MHz) voltage feedback amplifiers with an exceptionally low and the single AD8038 is available in both an 8-lead SOIC and a quiescent current of 1.0 mA/amplifier typical (1.5 mA maximum). 5-lead SC70 package. These amplifiers are rated to work over The AD8038 single amplifier in the 8-lead SOIC package has a the industrial temperature range of 40C to +85C. disable feature. Despite being low power and low cost, the amplifier 24 provides excellent overall performance. Additionally, it offers a G = +10 21 high slew rate of 425 V/s and a low input offset voltage of 3 mV 18 maximum. 15 G = +5 The Analog Devices, Inc., proprietary XFCB process allows low 12 noise operation (8 nV/Hz and 600 fA/Hz) at extremely low 9 quiescent currents. Given a wide supply voltage range (3 V to 12 V), G = +2 6 wide bandwidth, and small packaging, the AD8038 and AD8039 3 amplifiers are designed to work in a variety of applications G = +1 where power and space are at a premium. 0 The AD8038 and AD8039 amplifiers have a wide input common- 3 mode range of 1 V from either rail and swing to within 1 V of each 6 0.1 1 10 100 1000 rail on the output. These amplifiers are optimized for driving FREQUENCY (MHz) capacitive loads up to 15 pF. If driving larger capacitive loads, a small Figure 4. Small Signal Frequency Response for Various Gains, series resistor is needed to avoid excessive peaking or overshoot. V = 500 mV p-p, V = 5 V OUT S Rev. G 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20022009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. GAIN (dB) 02951-002 02951-003 02951-001 02951-004AD8038/AD8039 TABLE OF CONTENTS Features .............................................................................................. 1 Disable ......................................................................................... 13 Applications ....................................................................................... 1 Power Supply Bypassing ............................................................ 13 Functional Block Diagram .............................................................. 1 Grounding ................................................................................... 13 General Description ......................................................................... 1 Input Capacitance ...................................................................... 13 Revision History ............................................................................... 2 Output Capacitance ................................................................... 13 Specif icat ions ..................................................................................... 3 Input-to-Output Coupling ........................................................ 13 Absolute Maximum Ratings ............................................................ 5 Applications Information .............................................................. 14 Maximum Power Dissipation ..................................................... 5 Low Power ADC Driver ............................................................ 14 Output Short Circuit .................................................................... 5 Low Power Active Video Filter ................................................. 14 ESD Caution .................................................................................. 5 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 16 Layout, Grounding, and Bypassing Considerations .................. 13 REVISION HISTORY 8/09Rev. F to Rev. G 5/02Rev. A to Rev. B Changes to Applications Section and General Description Add Part Number AD8038 ............................................... Universal Section ................................................................................................ 1 Changes to Product Title .................................................................. 1 Changes to Disable Section and Grounding Section ................. 13 Changes to Features .......................................................................... 1 Changes to Low Power ADC Driver Section and Low Power Changes to Product Description ..................................................... 1 Changes to Connection Diagram .................................................... 1 Active Video Filter Section ............................................................ 14 Updated Outline Dimensions ....................................................... 15 Update to Specifications ................................................................... 2 Changes to Ordering Guide .......................................................... 16 Update to Maximum Power Dissipation ........................................ 4 Update to Output Short Circuit ....................................................... 4 8/04Rev. E to Rev. F Update to Ordering Guide ............................................................... 4 Changes to Figure 4 ........................................................................ 10 Change to Figure 2 ............................................................................ 4 8/03Rev. D to Rev. E Change to TPC 2 ............................................................................... 5 Change to TPC 18 ............................................................................. 6 Change to TPC 34............................................................................. 8 Change to TPC 27 ............................................................................. 7 7/03Rev. C to Rev. D Change to TPC 29 ............................................................................. 8 Changes to Ordering Guide ............................................................ 4 Change to TPC 30 ............................................................................. 8 Updated TPC 35 Caption ................................................................ 8 Change to TPC 31 ............................................................................. 8 Added TPC 36 .................................................................................... 8 6/03Rev. B to Rev. C Added TPC 37 .................................................................................... 9 Updated Connection Diagrams ...................................................... 1 Edits to Low Power Active Video Filter ....................................... 10 Updated Ordering Guide ................................................................. 4 Change to Figure 4 ......................................................................... 10 Updated Outline Dimensions ....................................................... 11 4/02Rev. 0 to Rev. A Changes to Features .......................................................................... 1 Update Specifications ................................................................... 2, 3 Edits to TPC 19 .................................................................................. 7 Rev. G Page 2 of 16