ad8264 Analog Devices, Inc., ad8264 Datasheet
ad8264
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ad8264 Summary of contents
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... The differential output amplifier permits convenient level shifting and interfacing to single–supply ADC’s using the VOCM and OFSx pins. The AD8264 is available in a 40-lead LFCSP with an operating temperature range of –40°C to +85°. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...
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... AD8264 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 Maximum Power Dissipation ..................................................... 6 ESD Caution .................................................................................. 6 Preliminary Technical Data Pin Configuration and Function Descriptions ..............................7 Theory of Operation .........................................................................8 Overview ........................................................................................8 Preamp ............................................................................................8 VGA ................................................................................................8 Post Amplifier ................................................................................9 ...
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... MHz V = 0V, VGAx = 0.5Vpp, Diff Out = 1Vpp GAIN (Measured @ Diff Out MHz MHz MHz MHz GAIN Rev. PrA| Page AD8264 = GND MHz pF 500 OFS L L Typ Min Max Unit (BOLD = Measured) ...
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... AD8264 Parameter Two-Tone Intermodulation Distortion (IMD3) Output Third Order Intercept Overload Recovery Group Delay Variation ACCURACY 1 Absolute Gain Error 2 Gain Law Conformance Channel-to-Channel Matching GAIN CONTROL INTERFACE Gain Scaling Factor Gain Range Intercept Input Voltage (GNHx) Range Input Resistance Bias Current ...
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... T ≤ 105° ± ° -40°C ≤ T ≤ From VPOS to Diff Out 0 MHz GAIN From VNEG to Diff Out 0 MHz GAIN Rev. PrA| Page AD8264 Typ Min Max Unit (BOLD = Measured ±2.5 ±5 V TBD 79 ...
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... LFCSP ±6V VPOS, VNEG MAXIMUM POWER DISSIPATION VPOS, VNEG The maximum safe power dissipation for the AD8264 is limited TBD W by the associated rise in junction temperature (T approximately 150°C, which is the glass transition temperature, –40°C to +85°C the properties of the plastic change. Even temporarily exceeding – ...
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... VGA Output for CH1 through 4 21, 24, 27, 30 VOLx Negative Differential Amplifier Output for CH1 through 4 22, 23, 28, 29 VOHx Positive Differential Amplifier Output for CH1 through 4 36 GNLO Negative Gain Control Input (Reference for GNHx pins) Figure 2. 40-Lead LFCSP Rev. PrA| Page AD8264 ...
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... AD8264 THEORY OF OPERATION OVERVIEW The AD8264 coupled quad channel VGA with a fixed gain-of-2 (6 dB) preamplifier, and a single-ended to differential amplifier with level shift capability that can be used as an ADC driver. Figure 3 shows a representative block diagram of a single channel; all four channels are identical. The supply can operate from ± ...
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... DC offset at the output. This is very useful when the input is a unipolar Figure 3. AD8264 Single-Channel Block Diagram pulse, since the user can set up the gain and the offset in such a way as to optimally map a unipolar pulse into the full-scale input of an ADC, while DC coupling throughout ...
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... AD8264ACPZ -40°C to +85°C 1 AD8264ACPZ-R7 -40°C to +85°C 1 AD8264ACPZ-RL -40°C to +85° RoHS Compliant Part ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR07736-0-2/09(PrA) Figure 4. 40-Lead Lead Frame Chip Scale Package [LFCSP_VQ × ...