ADA4939-1YCPZ-R2 Analog Devices Inc, ADA4939-1YCPZ-R2 Datasheet
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ADA4939-1YCPZ-R2
Specifications of ADA4939-1YCPZ-R2
Related parts for ADA4939-1YCPZ-R2
ADA4939-1YCPZ-R2 Summary of contents
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... FREQUENCY (MHz) Figure 3. Harmonic Distortion vs. Frequency The ADA4939 is available in a Pb-free × 16-lead LFCSP (ADA4939-1, single Pb-free × 24-lead LFCSP (ADA4939-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4939-1 and the ADA4939-2 are specified to operate over the −40°C to +105° ...
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... ADA4939-1/ADA4939-2 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagrams............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... Operation ............................................................................... 3 3.3 V Operation ............................................................................ 5 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 Maximum Power Dissipation ..................................................... 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ............................................. 9 Test Circuits..................................................................................... 15 Operational Description................................................................ 16 Definition of Terms.................................................................... 16 REVISION HISTORY 5/08— ...
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... OUT p-p, 70 MHz OUT p-p, 100 MHz OUT MHz 70.1 MHz p OUT 140 MHz 140.1 MHz p OUT 100 kHz f = 100 kHz f = 100 MHz, ADA4939 / 2.5 V OS, dm OUT, dm DIN+ DIN− variation MIN MAX variation MIN MAX Differential Common mode ∆V /∆V , ∆ ...
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... ADA4939-1/ADA4939 Performance OCM OUT, cm Table 2. Parameter V DYNAMIC PERFORMANCE OCM −3 dB Bandwidth Slew Rate Input Voltage Noise (RTI) V INPUT CHARACTERISTICS OCM Input Voltage Range Input Resistance Input Offset Voltage V CMRR OCM Gain General Performance Table 3. Parameter POWER SUPPLY Operating Range Quiescent Current per Amplifier ...
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... V p-p, 10 MHz OUT p-p, 70 MHz OUT p-p, 100 MHz OUT MHz 70.1 MHz p OUT 140 MHz 140.1 MHz p OUT 100 kHz f = 100 kHz f = 100 MHz, ADA4939 / OS, dm OUT, dm DIN+ DIN− variation MIN MAX variation MIN MAX Differential Common mode ∆ ...
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... ADA4939-1/ADA4939 Performance OCM OUT, cm Table 5. Parameter V DYNAMIC PERFORMANCE OCM −3 dB Bandwidth Slew Rate Input Voltage Noise (RTI) V INPUT CHARACTERISTICS OCM Input Voltage Range Input Resistance Input Offset Voltage V CMRR OCM Gain General Performance Table 6. Parameter POWER SUPPLY Operating Range Quiescent Current per Amplifier ...
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... ADA4939-1, 16-Lead LFCSP (Exposed Pad) ADA4939-2, 24-Lead LFCSP (Exposed Pad) MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the ADA4939 package is limited by the associated rise in junction temperature (T the die. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily ...
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... Scale) + Figure 5. ADA4939-1 Pin Configuration Table 9. ADA4939-1 Pin Function Descriptions Pin No. Mnemonic 1 −FB 2 +IN 3 − OCM 10 +OUT 11 −OUT −V S Table 10. ADA4939-2 Pin Function Descriptions Pin No. Mnemonic 1 −IN1 2 +FB1 −FB2 6 +IN2 7 −IN2 8 +FB2 OCM2 12 +OUT2 13 −OUT2 14 PD2 15, 16 −V S2 ...
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... Figure 11. Large Signal Frequency Response for Various Supplies –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 –11 –12 1k Figure 12. Large Signal Frequency Response for Various Temperatures Rev Page ADA4939-1/ADA4939 kΩ, unless otherwise noted p-p OUT 200Ω 60.4Ω +2. 127Ω 66.3Ω +3. 80.6Ω 76.8Ω ...
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... ADA4939-1/ADA4939 100mV p-p OUT –1 –2 –3 –4 –5 –6 –7 –8 –9 – 1kΩ L – 200Ω L – 100 FREQUENCY (MHz) Figure 13. Small Signal Frequency Response for Various Loads 100mV p-p OUT –3 – 1.0V OCM V = 3.9V OCM V = 2.5V OCM – ...
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... HD2 10MHz HD3 10MHz –65 HD2 70MHz HD3 70MHz –70 1 Rev Page ADA4939-1/ADA4939-2 HD2, V HD3, V HD2, V HD3 p-p) OUT, dm and Supply Voltage MHz OUT p-p OUT ±2.5V S 69.6 69.7 69 ...
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... ADA4939-1/ADA4939-2 – HD2 p-p OUT HD3 p-p OUT HD2 p-p –70 OUT HD3 p-p OUT, dm –80 –90 –100 –110 –120 1 10 FREQUENCY (MHz) Figure 25. Harmonic Distortion vs. Frequency at Various Output Voltages – 200Ω –40 –50 –60 –70 –80 –90 –100 1 10 FREQUENCY (MHz) Figure 26 ...
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... Rev Page ADA4939-1/ADA4939-2 – 200Ω –50 –60 –70 INPUT AMP 1 TO OUTPUT AMP 2 –80 –90 INPUT AMP 2 TO OUTPUT AMP 100 FREQUENCY (MHz) Figure 34. Crosstalk vs. Frequency for ADA4939 –1 –2 –3 – TIME (ns) Figure 35. Large Signal Pulse Response 4.5 4.0 3 ...
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... ADA4939-1/ADA4939-2 3.5 3.0 V OUT, dm 2.5 2.0 PD 1.5 1.0 0.5 0 –0.5 0 100 200 300 400 500 600 TIME (ns) Figure 37. PD Response Time R = 200Ω 100 700 800 900 1000 Rev Page 100 1k 10k 100k FREQUENCY (Hz) Figure 38. Voltage Noise Spectral Density, RTI 1M 10M ...
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... LOW-PASS FILTER V ADA4939 60.4Ω OCM 0.1µF 200Ω 0.1µF 402Ω Figure 41. Test Circuit for Distortion Measurements Rev Page ADA4939-1/ADA4939-2 1kΩ NETWORK ANALYZER INPUT 49.9Ω AC-COUPLED 50Ω 49.9Ω 200Ω 50Ω 442Ω 2:1 ...
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... ADA4939-1/ADA4939-2 OPERATIONAL DESCRIPTION DEFINITION OF TERMS – +IN –OUT + ADA4939 OCM –D IN –IN +OUT +FB Figure 42. Circuit Definitions Differential Voltage Differential voltage refers to the difference between two node voltages. For example, the output differential voltage (or equivalently, output differential-mode voltage) is defined − OUT, dm +OUT −OUT ...
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... THEORY OF OPERATION The ADA4939 differs from conventional op amps in that it has two outputs whose voltages move in opposite directions and an additional input Like an op amp, it relies on high open- OCM loop gain and negative feedback to force these outputs to the desired voltages. The ADA4939 behaves much like a standard ...
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... ADA4939-1/ADA4939-2 Table 11. Output Noise Voltage Density Calculations for Matched Feedback Networks Input Noise Contribution Input Noise Term Differential Input v nIN Inverting Input i nIN Noninverting Input i nIN V Input v OCM nCM Gain Resistor nRG1 Gain Resistor nRG2 Feedback Resistor nRF1 Feedback Resistor nRF2 Table 12 ...
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... R Terminating a Single-Ended Input This section deals with how to properly terminate a single- ended input to the ADA4939 with a gain between the inputs R = 200 Ω. An example using an input source with a terminated . ...
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... F G without modifying p-p, R OUT = Desired 227 − = OUT , 422Ω p 50Ω 200Ω 60.4Ω ADA4939 OCM R G 200Ω 27.4Ω – 422Ω is increased G . This TH must Ω Ω 417 − OUT 2.02V p-p ...
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... MINIMUM R VALUE OF 50 Ω G Due to the wide bandwidth of the ADA4939, the value greater than or equal to 50 Ω to provide sufficient damping in the amplifier front end. In the terminated case, R Thevenin resistance of the source and load terminations. ...
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... ADA4939-1/ADA4939-2 LAYOUT, GROUNDING, AND BYPASSING As a high speed device, the ADA4939 is sensitive to the PCB environment in which it operates. Realizing its superior performance requires attention to the details of high speed PCB design. This section shows a detailed example of how the ADA4939-1 was addressed. The first requirement is a solid ground plane that covers as much of the board area around the ADA4939-1 as possible ...
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... SIGNAL GENERATOR 0.1µF Figure 54. ADA4939 Driving an AD9445 ADC with AC-Coupled Input and Output In this example, the signal generator has p-p symmetric, ground-referenced bipolar output when terminated in 50 Ω. The V OCM and left floating such that the internal divider sets the output common-mode voltage nominally at midsupply ...
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... SEATING PLANE PIN 1 INDICATOR 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 ADA4939-1YCPZ-R2 −40°C to +105°C 1 ADA4939-1YCPZ-RL −40°C to +105°C 1 ADA4939-1YCPZ-R7 −40°C to +105°C 1 ADA4939-2YCPZ-R2 −40°C to +105°C 1 ADA4939-2YCPZ-RL −40°C to +105°C 1 ADA4939-2YCPZ-R7 − ...