ADA4937-1YCPZ-R7 Analog Devices Inc, ADA4937-1YCPZ-R7 Datasheet
ADA4937-1YCPZ-R7
Specifications of ADA4937-1YCPZ-R7
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ADA4937-1YCPZ-R7 Summary of contents
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... FREQUENCY (MHz) Figure 3. Harmonic Distortion vs. Frequency The ADA4937-x is available in a Pb-free × 3 mm, 16-lead LFCSP (ADA4937-1, single Pb-free × 4 mm, 24-lead LFCSP (ADA4937-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4937-x is specified to operate over the automotive (−40°C to +105°C) temperature range and between 3 ...
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... Layout, Grounding, and Bypassing .............................................. 22 High Performance ADC Driving ................................................. 23 3.3 V Operation .......................................................................... 25 Outline Dimensions ....................................................................... 26 Ordering Guide .......................................................................... 26 11/07—Rev Rev. A Added the ADA4937-2 ...................................................... Universal Changes to Features .......................................................................... 1 Changes to Specifications ................................................................. 3 Changes to Figure 4 ........................................................................... 7 Changes to Typical Performance Characteristics.......................... 9 Inserted Figure 44 ........................................................................... 15 Added the Terminating a Single-Ended Input Section ............. 19 Changes to Table 10 and Table 11 ...
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... Settling Time Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE Second Harmonic Third Harmonic IMD Voltage Noise (RTI) Input Current Noise Noise Figure Crosstalk (ADA4937-2) INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Capacitance Input Common-Mode Voltage CMRR OUTPUT CHARACTERISTICS ...
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... ADA4937-1/ADA4937 ±OUT Performance OCM 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 Input Bias Current V CMRR OCM Gain POWER SUPPLY Operating Range Quiescent Current per Amplifier ...
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... Settling Time Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE Second Harmonic Third Harmonic IMD Voltage Noise (RTI) Input Current Noise Noise Figure Crosstalk (ADA4937-2) INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Resistance Input Capacitance Input Common-Mode Voltage CMRR OUTPUT CHARACTERISTICS Output Voltage Swing ...
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... ADA4937-1/ADA4937 ±OUT Performance OCM Table 4. 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 Input Bias Current V CMRR OCM Gain POWER SUPPLY Operating Range Quiescent Current per Amplifier ...
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... LFCSP (Exposed Pad) 24-Lead LFCSP (Exposed Pad) Maximum Power Dissipation The maximum safe power dissipation in the ADA4937-x packages 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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... Negative Output for Load Connection Power-Down Pin −V Negative Supply Voltage Exposed Paddle. The exposed pad is not electrically connected to the device typically soldered to ground or a power plane on the PCB that is thermally conductive –OUT 10 +OUT 9 V OCM Table 8. ADA4937-2 Pin Function Descriptions Pin No 15 ...
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... Figure 9. Small Signal Frequency Response for Various Temperatures 100 mV p-p OUT p- / 61.9 Ω, R OCM S T 1000 1000 Figure 11. Large Signal Frequency Response for Various Supplies 1000 Figure 12. Large Signal Frequency Response for Various Temperatures Rev Page ADA4937-1/ADA4937 200 Ω kΩ, unless otherwise –3 –6 –9 – + 200Ω + 402Ω ...
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... ADA4937-1/ADA4937 1kΩ 100Ω 200Ω –3 –6 – 100 FREQUENCY (MHz) Figure 13. Small Signal Frequency Response for Various Loads 100 mV p-p OUT –3 –6 –9 – 3.3V + 200Ω 3.3V + 402Ω 3.3V + 402Ω – 100 FREQUENCY (MHz) Figure 14. Small Signal Frequency Response for Various Gains ...
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... FREQUENCY (MHz) Figure 19. Small Signal Frequency Response for Various V OCM 1.5 = 1kΩ, ADA4937 100Ω, ADA4937 1kΩ, ADA4937 1.2 = 100Ω, ADA4937 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 ...
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... ADA4937-1/ADA4937-2 –30 HD2 10MHz HD3 10MHz –40 HD2 75MHz HD3 75MHz –50 –60 –70 –80 –90 –100 –110 –120 1.0 1.5 2.0 2.5 V (V) OCM Figure 25. Harmonic Distortion vs. V –40 HD2 30MHz HD3 30MHz HD2 75MHz –50 HD3 75MHz –60 –70 – ...
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... Figure 35. Overdrive Recovery Time (Pulse Input –1 –2 –3 –4 –5 0 100 Figure 36. Overdrive Amplitude Characteristics (Triangle Wave Input) Rev Page ADA4937-1/ADA4937 100 FREQUENCY (MHz) Figure 34. Noise Figure vs. Frequency V × 3. OUT, dm TIME (4ns/DIV) V × OUT +2.5V S – ...
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... ADA4937-1/ADA4937 +25° 0°C 15 –40° 1.0 1.1 1.2 1.3 1.4 1.5 1.6 POWER-DOWN VOLTAGE (V) Figure 37. Supply Current vs. PD for Various Temperatures 0.20 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 –0.20 TIME (1ns/DIV) Figure 38. Small Signal Pulse Response 2.60 2.58 2.56 2.54 2.52 2 ...
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... Figure 43. PD Response vs. Time –40 –50 INPUT2, OUTPUT1 –60 –70 –80 –90 –100 INPUT1, OUTPUT2 –110 –120 –130 –140 0 100 FREQUENCY (MHz) Figure 44. Crosstalk vs. Frequency for ADA4937-2 100 100 1k 10k 100k FREQUENCY (Hz) Figure 45. Voltage Spectral Noise Density, RTI 0.1 2.0 2.5 0.01 2 ...
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... Figure 50. Test Circuit for Output Balance 200Ω 5V 0.1µF 200Ω FILTER V ADA4937 OCM 61.9Ω 0.1µF 200Ω 27.5Ω 200Ω Figure 51. Test Circuit for Distortion Measurements Rev Page 1kΩ 50Ω ...
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... Figure 50). 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 Rev Page ADA4937-1/ADA4937 )/2 +OUT −OUT V ...
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... Also like an op amp, the ADA4937-x has high input impedance and low output impedance. Two feedback loops control the differential and common-mode output voltages ...
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... Input Gain Resistor R , ratio matching OCM Terminating a Single-Ended Input This section explains how to properly terminate a single-ended input to the ADA4937-x. Using a simple example with an input source and a source resistor of 50 Ω, four simple steps must be followed. 1. The input impedance must be calculated using the formula ...
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... The ADA4937-x power-down pin features an internal 25 kΩ pull-up resistor to the positive supply (+ 200 = 207 Ω with the power-down pin left unconnected (floating), the ADA4937-x turns on. Applying a voltage of ≤1 V turns the ADA4937-x off. × 200 = 414 Ω ...
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... IN, dm 400 5.8 400 9.6 254 12.1 161 16 Ω (Ω) R (Ω) R (Ω 61.9 267 226 60.4 301 228 66.5 205 155 76.8 138 111 Rev Page ADA4937-1/ADA4937 kΩ; See Figure 55 L Differential Output Noise Density (nV/√Hz) 5.5 8.6 10.1 12.2 ...
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... ADA4937-1/ADA4937-2 LAYOUT, GROUNDING, AND BYPASSING As a high speed device, the ADA4937-x 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 design issues of the ADA4937-1 were addressed. ...
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... The ADA4937-x eliminates the need for a transformer to drive the ADC and performs a single-ended-to-differential conversion and buffering of the driving signal. The ADA4937-x is configured with a single 5 V supply and unity gain for a single-ended input to differential output. The 61.9 Ω termination resistor, in parallel with the single-ended input imped- ance of 267 Ω ...
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... A portion of this is fed back to the summing nodes, biasing −IN and +IN at 0.55 V. For a common-mode vol- tage of 2.5 V, each ADA4937-x output swings between 2.0 V and 3.0 V, providing p-p differential output. The output is ac-coupled to a single-pole, low-pass filter. This reduces the noise bandwidth of the amplifier and provides some level of isolation from the switched capacitor inputs of the ADC ...
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... The V is connected to the CML output of the AD9230, and sets the out- put common mode of the ADA4937-x at 1.4 V. One third of the output common-mode voltage of the amplifier is fed back to the summing nodes, biasing −IN and +IN at ~0.5 V. For a common- mode voltage of 1 ...
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... SEATING PLANE ORDERING GUIDE 1 Model Temperature Range ADA4937-1YCPZ-R2 −40°C to +105°C ADA4937-1YCPZ-RL −40°C to +105°C ADA4937-1YCPZ-R7 −40°C to +105°C ADA4937-2YCPZ-R2 −40°C to +105°C ADA4937-2YCPZ-RL −40°C to +105°C ADA4937-2YCPZ-R7 −40°C to +105° RoHS Compliant Part. 3.00 ...
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... NOTES Rev Page ADA4937-1/ADA4937-2 ...
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... ADA4937-1/ADA4937-2 NOTES ©2007–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06591-0-3/10(C) Rev Page ...