ada4938-1xcpz Analog Devices, Inc., ada4938-1xcpz Datasheet
ada4938-1xcpz
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ada4938-1xcpz Summary of contents
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... XFCB process, enabling it to achieve very low levels of distortion with input voltage noise of only 2.2 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4938-1 make it well suited for a wide variety of data acquisition and signal processing and applications. The ADA4938-1 is available in a Pb-free 3mm lead frame chip scale package (LFCSP) ...
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... ADA4938-1 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Dual Supply Operation ................................................................ 3 Single Supply Operation.............................................................. 5 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Operational Description.................................................................. 9 REVISION HISTORY 05/07—Rev. PrC to Rev. PrD Changes to Features.......................................................................... 1 Changes to Figure 1 ...
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... OUT, cm DIN+ DIN– ∆V /∆V ; ∆V = ±1 V OUT, dm OCM OCM ∆V /∆V ; ∆V = ±1 V OUT, cm OCM OCM Rev. PrD | Page ADA4938 kΩ, unless otherwise noted Min Typ Max 1500 125 1300 800 4700 4 −112 −79 −102 −81 2.2 21 ...
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... ADA4938-1 Parameter Quiescent Current Power Supply Rejection Ratio POWER DOWN ( Input Voltage Turn-Off Time Turn-On Time PD Bias Current Enabled Disabled OPERATING TEMPERATURE RANGE Conditions variation MIN MAX Powered down ∆V /∆V ; ∆V = ±1 V OUT Powered down Enabled Rev ...
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... V OUT, dm OCM OCM ∆V /∆V ; ∆V = ±1 V OUT, cm OCM OCM variation MIN MAX Powered down Rev. PrD | Page ADA4938 kΩ, unless otherwise noted Min Typ Max 1500 125 1100 3900 4 −110 −79 −100 −79 2 ± ...
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... ADA4938-1 Parameter Power Supply Rejection Ratio POWER DOWN ( Input Voltage Turn-Off Time Turn-On Time PD Bias Current Enabled Disabled OPERATING TEMPERATURE RANGE Conditions ∆V /∆V ; ∆V = ±1 V OUT Powered down Enabled Rev. PrD | Page Preliminary Technical Data ...
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... Table 4. Thermal Resistance Package Type θ 16-Lead LFCSP (Exposed Pad) 95 Maximum Power Dissipation The maximum safe power dissipation in the ADA4938-1 package is limited by the associated rise in junction temperature ( the die. At approximately 150°C, which J is the glass transition temperature, the plastic changes its properties ...
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... ADA4938-1 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic 1 −FB 2 +IN 3 − OCM 10 +OUT 11 −OUT −V S Preliminary Technical Data Figure 3. Pin Configuration Description Negative Output for Feedback Component Connection Positive Input Summing Node ...
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... By this definition, output balance is the magnitude of the output common-mode voltage divided by the magnitude of the output differential mode voltage. Output Balance Error Rev. PrD | Page ADA4938-1 )/ OUT , cm V OUT ...
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... ADA4938-1 behaves much like a standard voltage feedback op amp and makes it easier to perform single-ended-to-differential conversions, common-mode level shifting, and amplifications of differential signals. Also like an op amp, the ADA4938-1 has high input impedance and low output impedance. Two feedback loops are employed to control the differential and common-mode output voltages ...
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... ADC. However, care must be taken to Rev. PrD | Page ⎛ ⎞ ⎜ ⎟ R ⎜ ⎟ ⎜ ⎟ − ⎜ ⎟ × ⎝ ⎠ pin of the ADA4938-1 is internally biased at a voltage OCM input to a common-mode OCM ADA4938-1 ...
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... The input impedance of the V pin is approximately 10 kΩ. If multiple OCM ADA4938-1 devices share one reference output recommended that a buffer be used. Table 7 and Table 8 list several common gain settings, associated resistor values, input impedance, output noise density, and approximate large signal bandwidth for both balanced and unbalanced input configurations ...
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... Preliminary Technical Data LAYOUT, GROUNDING, AND BYPASSING As a high speed device, the ADA4938-1 is sensitive to the PCB environment in which it operates. Realizing its superior performance requires attention to the details of high speed PCB design. The first requirement is a solid ground plane that covers as much of the board area around the ADA4938-1 as possible. ...
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... Body (CP-16-2) Dimensions shown in millimeters Temperature Range Package Description −40°C to +85°C 16-Lead 3 mm × LFCSP −40°C to +85°C 16-Lead 3 mm × LFCSP −40°C to +85°C 16-Lead 3 mm × LFCSP ADA4938-1 0.50 0.40 0.30 PIN 1 INDICATOR * 1. 1.30 SQ 1.15 ...