AD9237BCPZ-20 Analog Devices Inc, AD9237BCPZ-20 Datasheet
AD9237BCPZ-20
Specifications of AD9237BCPZ-20
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AD9237BCPZ-20 Summary of contents
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FEATURES Ultralow power MSPS 135 MSPS 190 MSPS SNR = 66 dBc to Nyquist at 65 MSPS SFDR = 80 dBc to Nyquist at 65 MSPS DNL = ±0.7 LSB ...
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AD9237 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 DC Specifications ......................................................................... 3 Digital Specifications ................................................................... 4 AC Specifications ...
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SPECIFICATIONS DC SPECIFICATIONS AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate p-p differential input, −0.5 dBFS input, 1.0 V internal reference, T unless otherwise noted. Table 1. Parameter RESOLUTION ACCURACY No Missing Codes Guaranteed Offset ...
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AD9237 DIGITAL SPECIFICATIONS Table 2. Parameter LOGIC INPUTS High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current Input Capacitance 1 LOGIC OUTPUTS DRVDD = 3.3 V High-Level Output Voltage (IOH = 50 μA) ...
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Parameter SPURIOUS-FREE DYNAMIC RANGE (SFDR 2.4 MHz INPUT f = 9.7 MHz INPUT f = 19.6 MHz INPUT f = 34.2 MHz INPUT MHz INPUT WORST HARMONIC (SECOND OR THIRD 2.4 MHz INPUT ...
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AD9237 TIMING DIAGRAM N–1 ANALOG INPUT CLK DATA N–11 OUT N+1 N N+2 N N+4 N+5 N–10 N–9 N–8 N–7 N–6 N–5 Figure 2. Timing Diagram Rev Page N+8 N+7 N+6 N–4 N–3 ...
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ABSOLUTE MAXIMUM RATINGS Table 5. With Pin Name Respect to Min ELECTRICAL AVDD AGND –0.3 DRVDD DGND –0.3 AGND DGND –0.3 AVDD DRVDD –3.9 Digital DGND –0.3 Outputs, OE CLK, MODE, AGND −0.3 MODE2 VIN+, VIN– AGND –0.3 VREF AGND ...
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AD9237 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 6. Pin Function Descriptions Pin Number Mnemonic 1 MODE2 2 CLK PDWN DNC (LSB) to D11 (MSB) 15 DGND 16 ...
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TERMINOLOGY Analog Bandwidth (Full Power 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% ...
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AD9237 EQUIVALENT CIRCUITS AVDD VIN+, VIN– Figure 4. Equivalent Analog Input Circuit MODE, 375Ω MODE2, GC, OE 70kΩ Figure 5. Equivalent MODE, MODE2, GC, OE Input Circuit DRVDD Figure 6. Equivalent Digital Output Circuit 375Ω CLK, PDWN Figure 7. Equivalent ...
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TYPICAL PERFORMANCE CHARACTERISTICS AVDD = 3.0 V, DRVDD = 2.5 V, maximum sample rate with DCS disabled, T VREF = 1.0 V internal, FFT length 16 K, unless otherwise noted. 0 SNR = 66.9dBc SFDR = 87.0dBc –20 –40 –60 ...
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AD9237 0 SNR = 65.6dBc SFDR = 67.1dBc –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 14. AD9237-65 100 MHz FFT 90 SFDR dBFS 4V p-p 80 SFDR dBFS 2V p-p SNR dBFS 2V p-p ...
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SNR = 67.0dBFS SFDR = 87.8dBFS –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 20. AD9237-65 Two-Tone FFT MHz, f IN1 0 SNR = 67.2dBFS SFDR = 88.3dBFS –20 –40 ...
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AD9237 0 –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 26. AD9237-40 Two-Tone FFT MHz MHz IN1 IN2 90 85 SFDR SNR ...
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AD9237-20 AD9237-40 66.5 AD9237-65 66.0 65.5 65 CLOCK FREQUENCY (MSPS) Figure 32. AD9237 SINAD/ENOB vs. Clock Frequency with 10.83 80 10.75 75 10.67 70 10.59 65 10.50 60 –40 60 ...
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AD9237 APPLYING THE AD9237 THEORY OF OPERATION The AD9237 uses a calibrated, 11-stage pipeline architecture with a patented input SHA implemented. Each stage of the pipeline, excluding the last, consists of a low resolution flash ADC connected to a switched ...
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The output common mode of the reference buffer is set to mid- supply, and the REFT and REFB voltages and input span are defined as: REFT = ½(AVDD + VREF) REFB = ½(AVDD − VREF × − 4 ...
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AD9237 Table 7. Reference Configuration Summary Selected Mode SENSE Voltage External Reference AVDD Internal Fixed Reference VREF Programmable Reference 0 VREF Internal Fixed Reference AGND to 0.2 V VOLTAGE REFERENCE A stable and accurate 0.5 V voltage reference ...
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External Reference Operation The use of an external reference may be necessary to enhance the gain accuracy of the ADC or to improve thermal drift characteristics. Figure 41 shows the typical drift characteristics of the internal reference in both 1 ...
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AD9237 This maximum current occurs when every output bit switches on every clock cycle, that is, a full-scale square wave at the Nyquist frequency, f /2. In practice, the DRVDD current is CLK established by the average number of output ...
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By asserting the PDWN pin to AVDD/3, the AD9237 is placed in standby mode. In this state, the ADC typically dissipates 20 mW. The output drivers are placed in a high impedance state. The reference circuitry is enabled, allowing for ...
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... INDICATOR 12° MAX 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE 1, Model Temperature Range AD9237BCPZ-20 –40°C to +85°C AD9237BCPZRL7-20 –40°C to +85°C AD9237BCPZ-40 –40°C to +85°C AD9237BCPZRL7-40 –40°C to +85°C AD9237BCPZ-65 –40°C to +85°C AD9237BCPZRL7-65 –40°C to +85° RoHS-Compliant Part ...
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NOTES Rev Page AD9237 ...
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AD9237 NOTES © 2005–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05455–0–5/10(A) Rev Page ...