AD9244-65PCB Analog Devices Inc, AD9244-65PCB Datasheet
AD9244-65PCB
Specifications of AD9244-65PCB
Related parts for AD9244-65PCB
AD9244-65PCB Summary of contents
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... IF Sampling—The AD9244 delivers outstanding performance at input frequencies beyond the first Nyquist zone. Sampling at 65 MSPS with an input frequency of 100 MHz, the AD9244 delivers 71 dB SNR and 86 dB SFDR. 3. Pin Compatibility—The AD9244 offers a seamless migration from the 12-bit, 65 MSPS AD9226. ...
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... AD9244 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 DC Specifications ......................................................................... 3 AC Specifications.......................................................................... 4 Digital Specifications ................................................................... 5 Switching Specifications .............................................................. 6 Absolute Maximum Ratings............................................................ 7 Explanation of Test Levels ........................................................... 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 REVISION HISTORY 12/05—Rev Rev. C Updated Format ...
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... AD9244 Unit Bits Bits % FSR % FSR LSB LSB LSB LSB ppm/°C ppm/°C ppm/° kΩ LSB rms LSB rms V p μA MHz V ...
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... I −90.0 Full VI 25°C I Full IV 25°C I −84.6 Full IV 25°C V −84.1 25°C V −83.0 25°C V −60.7 Rev Page AD9244BST-40 Max Min Typ Max 73.4 75.3 72.1 74.7 72.8 68.3 73.2 75.1 72 74.4 72.4 56.3 11.9 12.2 11.7 12.1 11.7 9.1 −78.4 − ...
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... Full IV Full IV 2.4 Full IV Rev Page AD9244 AD9244BST-40 Max Min Typ Max −93.7 −92.8 −84.5 −56.6 82.5 93.7 81.4 91.8 84.5 56.6 AD9244BST-40 Max Min Typ Max 2 3.5 0.8 0.8 3.5 0.8 0 0.4 0.25 1.6 2 0.8 0.8 5 100 4.5 0.1 ...
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... Full V 15 Full – – – – – 3 Figure 2. Input Timing Rev Page AD9244BST-40 Typ Max Min Typ Max 2.95 0.05 0.05 2.8 0.4 0.4 AD9244BST-40 Max Min Typ Max Unit 40 MHz 500 500 kHz 11 Clock cycles 1.5 ns 0.3 ...
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... Sample tested only. Parameter is guaranteed by design and characterization testing. Parameter is a typical value only. 100% production tested at 25°C; guaranteed by design and characterization testing for industrial temperature range; 100% production tested at temperature extremes for military devices. AD9244 ...
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... REFGND REFB, REFT 43 DCS 45 CML 46, 47 VIN+, VIN– AGND 1 PIN 1 AGND 2 AVDD 3 AVDD 4 AGND 5 AD9244 CLK– 6 TOP VIEW (Not to Scale) CLK+ 7 NIC 8 OEB 9 D0 (LSB Figure 3. Pin Configuration Description Analog Ground. Analog Supply Voltage. Differential Clock Inputs. No Internal Connection. ...
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... Nyquist frequency, including harmonics, but excluding dc. Signal-to-Noise Ratio (SNR) The ratio of the rms signal amplitude to the rms value of the sum of all other spectral components below the Nyquist frequency, excluding the first six harmonics and dc. Rev Page AD9244 /2) on the output CLOCK /2 ...
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... AD9244 Spurious-Free Dynamic Range (SFDR) The difference in dB between the rms amplitude of the input signal and the peak spurious signal. Temperature Drift The temperature drift for offset error and gain error specifies the maximum change from initial (25°C) value to the value at ...
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... DRVDD 200Ω DGND Figure 5. Three-State (OEB) AVDD 200Ω CLK BUFFER AGND Figure 6. CLK+, CLK− AVDD AGND Figure 7. VIN+, VIN− Figure 8. DFS, DCS, SENSE Figure 9. VREF, REFT, REFB, VR, CML Rev Page AD9244 AVDD 200Ω AGND AVDD AGND ...
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... AD9244 TYPICAL PERFORMANCE CHARACTERISTICS AVDD = 5.0 V, DRVDD = 3 SAMPLE mode voltage ( 2.5 V, input amplitude ( –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 10. Single-Tone FFT SNR = 74.0dBc SFDR = 87.0dBc –20 –40 –60 –80 –100 –120 0 5.0 10.0 15.0 20.0 FREQUENCY (MHz) Figure 11. Single-Tone FFT – ...
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... Figure 21. THD vs. Temperature and Input Frequency, DCS Disabled Rev Page AD9244 2V SPAN 1V SPAN 100 120 INPUT FREQUENCY (MHz) Figure 19. SNR vs. Input Frequency 1V SPAN 2V SPAN 100 120 INPUT FREQUENCY (MHz) Figure 20 ...
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... AD9244 –100 FOURTH HARMONIC –95 THIRD HARMONIC –90 –85 –80 – INPUT FREQUENCY (MHz) Figure 22. Harmonics vs. Input Frequency 10MHz 20MHz SAMPE RATE (MSPS) Figure 23. SINAD/ENOB vs. Sample Rate 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 0 4096 8192 CODES (14-Bit) Figure 24. Typical INL SECOND ...
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... 69.2 MHz and 70.6 MHz IN−1 IN−2 SFDR (dBFS) SNR (dBFS) SFDR (dBc) SFDR = 90dBc REFERENCE LINE SNR (dBc) –25 –20 –15 –10 A (dBFS) IN Figure 33. Dual-Tone SNR/SFDR vs. A with 139.2 MHz and f = 140.7 MHz IN−1 IN−2 AD9244 –5 –5 –5 ...
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... AD9244 0 –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 34. Dual-Tone with f = 239.1 MHz and IN− 240.7 MHz ( IN−2 IN−1 IN−2 0 –10 –20 –30 –40 –50 –60 NOTE: SPUR FLOOR –70 BELOW 90dBFS @ 240MHz –80 –90 –100 –110 –120 FREQUENCY (MHz) Figure 35 ...
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... SHA to acquire the wrong input value and should be minimized. ANALOG INPUT AND REFERENCE OVERVIEW The differential input span of the AD9244 is equal to the poten- tial at the VREF pin. The VREF potential can be obtained from the internal AD9244 reference or an external source. ...
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... The range of valid inputs for VIN+ and VIN− is any combination that satisfies Equation 2, Equation 3, and Equation 4. For additional information showing the relationship between VIN+, VIN–, VREF, and the analog input range of the AD9244, see Table 8 and Table 9. ANALOG INPUT OPERATION ...
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... In Figure 46, the center tap is connected to a resistor divider providing a half supply voltage. It could also be connected to the CML pin of the AD9244. For IF sampling applications (70 MHz < f the 20 pF differential capacitor between VIN+ and VIN− be reduced or removed ...
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... Table 9 and are described in the next few sections. The actual reference voltages used by the internal circuitry of the AD9244 appear on the REFT and REFB pins. The voltages on these pins are symmetrical about midsupply or CML. For proper operation necessary to add a capacitor network to decouple these pins ...
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... Connect the DFS pin to AGND for straight binary and to AVDD for twos complement. Digital Output Driver Considerations The AD9244 output drivers can be configured to interface with 3.3 V logic families by setting DRVDD 3.3 V, respectively. The output drivers are sized to provide sufficient output current to drive a wide variety of logic families ...
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... MSB Figure 53. Overrange/Underrange Logic Digital Output Enable Function (OEB) The AD9244 has three-state ability. If the OEB pin is low, the output data drivers are enabled. If the OEB pin is high, the out- put data drivers are placed in a high impedance state. The three-state ability is not intended for rapid access to the data bus ...
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... AGND Figure 59. Single-Ended Clock Input, AC-Coupled Clock Power Dissipation Most of the power dissipated by the AD9244 is from the analog power supplies. However, lower clock speeds reduce digital supply current. Figure 60 shows the relationship between power and clock rate. 600 ...
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... LOCATE AS CLOSE AS POSSIBLE TO SUPPLY PINS. Figure 61. Analog Supply Decoupling Digital Supply Decoupling The digital activity on the AD9244 falls into two categories: correction logic and output drivers. The internal correction logic draws relatively small surges of current, mainly during the clock transitions. The output drivers draw large current impulses when the output bits change state ...
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... AD9244 and must be decoupled with a 0.1 μF capacitor. It sources or sinks a load 300 μA. If more current is required, the CML pin should be buffered with an amplifier internal bias point on the AD9244. It must be decoupled to AGND with a 0.1 μF capacitor. CML 0.1μF Figure 63. CML/VR Decoupling Rev ...
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... Connector S3. When using the transformer or AD8138 amplifier, a single-ended source can be used, as both of these devices are configured on the AD9244 evaluation board to convert single-ended signals to differential signels. Optimal AD9244 performance is achieved above 500 kHz by using the input transformer. To drive the AD9244 via the trans- former, connect solderable Jumper JP45 and Jumper JP46 ...
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... AVDD GND S4 2.5MHz INPUT BAND-PASS FILTER HP8644 xFMR EVALUATION BOARD S1/S5 CLOCK INPUT DIVIDER HP8644 CLOCK Figure 64. Evaluation Board Connections Rev Page Jumpers 11, 13 12 18A 9, 18B – + – + DUT GND DUT DVDD AVDD DVDD AD9244 OUTPUT DSP BUSS EQUIPMENT J1 AD9244 ...
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... AD9244 CW Figure 65. AD9244 Evaluation Board, ADC, External Reference, and Power Supply Circuitry Rev Page ...
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... EJECTORS NO MALE ANGLE RIGHT HEADER Figure 66. AD9244 Evaluation Board, Clock Input, and Digital Output Buffer Circuitry Rev Page AD9244 ...
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... R47 5 33Ω ADT4- R36 3 NC= 2 XFMRINPUT S4 T1-1TX65 5 P R24 49.9Ω Figure 67. AD9244 Evaluation Board, Analog Input Circuitry Rev Page AVDD C7 0.1μF JP42 JP40 C44 DNP R21 JP45 33Ω VIN+ C24 R22 20pF JP46 33Ω VIN– C43 JP41 ...
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... Figure 68. AD9244 Evaluation Board, PCB Assembly, Top Figure 69. AD9244 Evaluation Board, PCB Assembly, Bottom Rev Page AD9244 ...
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... AD9244 Figure 70. AD9244 Evaluation Board, PCB Layer 1 (Top) Figure 71. AD9244 Evaluation Board, PCB Layer 2 (Ground Plane) Rev Page ...
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... Figure 72. AD9244 Evaluation Board, PCB Layer 3 (Power Plane) Figure 73. AD9244 Evaluation Board, PCB Layer 4 (Bottom) Rev Page AD9244 ...
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... RV3299UP 10 kΩ RCTS766 22 Ω RCA74204 22 Ω SMA200UP DIP06RCUP T1-1TX65 MINI_CD637 ADT4-6T TBLK06REM LOOPTP RED LOOPMINI WHT LOOPTP BLK LQFP-48 AD9244 R-8 AD8138 SO8 MC10EL16 TSSOP14 74VHC04MTC SOIC-8 AD822 SOL20 74VHC541 ...
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... Item Qty. Reference Designator 50 14 Sockets for through resistors 51 2 C56, C57 Total 183 1 Do not place. Description Solder sockets Rev Page AD9244 Package Value 1 DNP ...
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... AD9244BSTRL-40 –40°C to +85°C 1 AD9244BSTZ-40 –40°C to +85°C AD9244BSTZRL-40 1 –40°C to +85°C AD9244-65PCB AD9244-40PCB Pb-free part. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02404-0-12/05(C) 0.75 1.60 ...