AD6644PCB AD [Analog Devices], AD6644PCB Datasheet
AD6644PCB
Related parts for AD6644PCB
AD6644PCB Summary of contents
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FEATURES 65 MSPS Guaranteed Sample Rate 40 MSPS Version Available Sampling Jitter < 300 fs 100 dB Multitone SFDR 1.3 W Power Dissipation Differential Analog Inputs Digital Outputs Two’s Complement Format 3.3 V CMOS-Compatible Data Ready for Output Latching ...
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AD6644–SPECIFICATIONS DC SPECIFICATIONS ( Parameter RESOLUTION ACCURACY No Missing Codes Offset Error Gain Error Differential Nonlinearity (DNL) Integral Nonlinearity (INL) TEMPERATURE DRIFT Offset Error Gain Error POWER SUPPLY REJECTION (PSRR) REFERENCE OUT (V ) REF ...
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AC SPECIFICATIONS ( Parameter SNR Analog Input 2.2 MHz @ –1 dBFS 15.5 MHz 30.5 MHz 2 SINAD Analog Input 2.2 MHz @ –1 dBFS 15.5 MHz 30.5 MHz WORST HARMONIC ...
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AD6644–SPECIFICATIONS Parameter 5 DATA READY (DRY )/DATA, OVR Data Ready to DATA Delay (Hold Time) Encode = 65 MSPS (50% Duty Cycle) Encode = 40 MSPS (50% Duty Cycle) Data Ready to DATA Delay (Setup Time MSPS (50% ...
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ABSOLUTE MAXIMUM RATINGS Parameter ELECTRICAL AV Voltage CC DV Voltage CC Analog Input Voltage Analog Input Current Digital Input Voltage Digital Output Current 2 ENVIRONMENTAL Operating Temperature Range (Ambient) Maximum Junction Temperature Lead Temperature (Soldering, 10 sec) Storage Temperature ...
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AD6644 Pin No 10, 13, 15, 17, 19, 21, 23, 25, 27, 29, 34 14, 16, 18, 22, 26, 28 ...
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DEFINITIONS OF SPECIFICATIONS Analog Bandwidth The analog input frequency at which the spectral power of the fundamental frequency (as determined by the FFT analysis) is reduced by 3 dB. Aperture Delay The delay between the 50% point of the rising ...
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AD6644 EQUIVALENT CIRCUITS AIN BUF 500 V CL BUF 500 AIN BUF V CL Figure 2. Analog Input Stage LOADS 10k 10k ENCODE 10k 10k LOADS Figure 3. ...
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ENCODE = 65MSPS –10 AIN = 2.2MHz @ –1dBFS SNR = 74.5dB –20 SFDR = 92dBc –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 FREQUENCY – MHz Figure 8. Single Tone ...
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AD6644 100 95 WORST OTHER SPUR HARMONICS ( ANALOG FREQUENCY – MHz Figure 14. Harmonics vs. Analog Frequency (IF) 120 ...
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ENCODE = 65MSPS –10 AIN = 15.5MHz @ –29.5dBFS NO DITHER –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 FREQUENCY – MHz Figure 20. 1M FFT Without Dither 100 ENCODE = ...
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AD6644 THEORY OF OPERATION The AD6644 analog-to-digital converter (ADC) employs a three stage subrange architecture. This design approach achieves the required accuracy and speed while maintaining low power and small die size. As shown in the functional block diagram, the ...
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In applications where dc-coupling is required, a new differential output op amp from Analog Devices, the AD8138, can be used to drive the AD6644 (Figure 28). The AD8138 op amp provides single-ended-to-differential conversion, which reduces overall system cost and minimizes ...
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AD6644 EVALUATION BOARD The evaluation board for the AD6644 is straightforward, containing all required circuitry for evaluating the device. The only external connections required are power supplies, clock, and the analog inputs. The evaluation board includes the option for an ...
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SMA Figure 30. AD6644ST/PCB Schematic (GS02357D Schematic) REV GND C2 GND GND CC DV GND 3P3V GND D8 C1 GND D9 CC D10 AV D11 GND CC AV D12 D13 GND ...
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AD6644 Figure 31. AD6644ST/PCB Top Side Silkscreen Figure 32. AD6644ST/PCB Top Side Copper –16– REV. 0 ...
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REV. 0 Figure 33. AD6644ST/PCB Bottom Side Silkscreen Figure 34. AD6644ST/PCB Bottom Side Copper –17– AD6644 ...
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AD6644 Figure 35. AD6644ST/PCB Ground Layer – Layers 2 and 5 (Negative) Figure 36. AD6644ST/PCB “Split” Power Layer – Layers 3 and 4 (Negative) –18– REV. 0 ...
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REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 52-Terminal Plastic Low Profile Quad Flatpack (ST-52) 0.063 (1.60) MAX 0.472 (12.00) SQ 0.030 (0.75 0.018 (0.45) 40 SEATING PLANE TOP VIEW (PINS DOWN 0.006 ...