AD9748ACP-PCB Analog Devices Inc, AD9748ACP-PCB Datasheet
AD9748ACP-PCB
Specifications of AD9748ACP-PCB
Related parts for AD9748ACP-PCB
AD9748ACP-PCB Summary of contents
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FEATURES High performance member of pin-compatible TxDAC product family Linearity 0.1 LSB DNL 0.1 LSB INL Twos complement or straight binary data format Differential current outputs Power dissipation: 135 mW @ 3.3 V Power-down mode: ...
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AD9748 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 Dynamic Specifications ............................................................... 4 Digital Specifications ................................................................... 5 ...
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SPECIFICATIONS DC SPECIFICATIONS AVDD = 3.3 V, DVDD = 3.3 V, CLKVDD = 3 MIN MAX Table 1. Parameter RESOLUTION 1 DC ACCURACY Integral Linearity Error (INL) Differential Nonlinearity (DNL) ANALOG OUTPUT Offset Error ...
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AD9748 DYNAMIC SPECIFICATIONS AVDD = 3.3 V, DVDD = 3.3 V, CLKVDD = 3 MIN MAX terminated, unless otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE Maximum Output Update Rate (f ) CLOCK 1 Output ...
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DIGITAL SPECIFICATIONS AVDD = 3.3 V, DVDD = 3.3 V, CLKVDD = 3 MIN MAX Table 3. Parameter DIGITAL INPUTS Logic 1 Voltage Logic 0 Voltage Logic 1 Current Logic 0 Current Input Capacitance ...
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AD9748 ABSOLUTE MAXIMUM RATINGS Table 4. With Respect to Parameter Min AVDD ACOM −0.3 DVDD DCOM −0.3 CLKVDD CLKCOM −0.3 ACOM DCOM −0.3 ACOM CLKCOM −0.3 DCOM CLKCOM −0.3 AVDD DVDD −3.9 AVDD CLKVDD −3.9 DVDD CLKVDD −3.9 CLK+, CLK−, ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 27 DB7 (MSB) Most Significant Data Bit (MSB 32, 1 DB6 to DB1 Data Bits DB0 (LSB) Least Significant Data ...
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AD9748 TERMINOLOGY Linearity Error (Also Called Integral Nonlinearity or INL) Linearity error is defined as the maximum deviation of the actual analog output from the ideal output, determined by a straight line drawn from zero to full scale. Differential Nonlinearity ...
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TYPICAL PERFORMANCE CHARACTERISTICS 55 5mA 50 10mA 2.5mA 20mA (MHz) OUT Figure 5. SINAD vs 100 MSPS (Single-Ended Output) OUTFS 55 10mA 50 5mA ...
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AD9748 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 FREQUENCY (MHz) Figure 11. Single-Tone Spectral Plot @ 125 MSPS (Single-Ended Output 165MSPS CLOCK – 49MHz OUT SFDR = ...
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FUNCTIONAL DESCRIPTION Figure 15 shows a simplified block diagram of the AD9748. The AD9748 consists of a DAC, digital control logic, and full-scale output current control. The DAC contains a PMOS current source array capable of providing ...
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AD9748 The control amplifier allows a wide (10:1) adjustment span of I over range by setting I OUTFS μA and 625 μA. The wide adjustment span of I several benefits. The first relates directly ...
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The output impedance of IOUTA and IOUTB is determined by the equivalent parallel combination of the PMOS switches associated with the current sources and is typically 100 kΩ in parallel with 5 pF also slightly dependent on the ...
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AD9748 DAC TIMING Input Clock and Data Timing Relationship Dynamic performance in a DAC is dependent on the relationship between the position of the clock edges and the time at which the input data changes. The AD9748 is rising edge ...
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APPLYING THE AD9748 Output Configurations The following sections illustrate some typical output configurations for the AD9748. Unless otherwise noted assumed that I is set to a nominal 20 mA. For applications OUTFS requiring the optimum dynamic performance, a ...
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AD9748 DIFFERENTIAL COUPLING USING AN OP AMP An op amp can also be used to perform a differential-to-single- ended conversion, as shown in Figure 26. The AD9748 is configured with two equal load resistors, R differential voltage developed across IOUTA ...
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POWER AND GROUNDING CONSIDERATIONS, POWER SUPPLY REJECTION Many applications seek high speed and high performance under less than ideal operating conditions. In these application circuits, the implementation and construction of the printed circuit board is as important as the circuit ...
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AD9748 EVALUATION BOARD GENERAL DESCRIPTION The AD9748 evaluation boards allow for easy setup and testing of the product in the LFCSP package. Careful attention to layout and circuit design, combined with a prototyping area, allows the user to evaluate the ...
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L1 BEAD TB1 1 BLK C2 C3 10μF 0.1μF TP2 6.3V TB1 2 L2 BEAD TB3 1 BLK C7 C4 0.1μF 10μF TP4 6.3V TB3 2 L3 BEAD TB4 1 BLK C9 C5 0.1μF 10μF TP6 6.3V TB4 2 R3 ...
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AD9748 32 1 DB7 DB8 DB7 2 31 DB6 DB9 DB6 30 3 DVDD DB10 DVDD 4 29 DB5 DB11 DB5 5 28 DB4 DB12 DB4 27 6 DB3 DB13 DB3 7 26 DB2 DCOM1 DB2 25 8 DB1 SLEEP ...
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Figure 35. Evaluation Board Layout—Primary Side Figure 36. Evaluation Board Layout—Secondary Side Rev Page AD9748 ...
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AD9748 Figure 37. Evaluation Board Layout—Ground Plane Figure 38. Evaluation Board Layout—Power Plane Rev Page ...
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Figure 39. Evaluation Board Layout Assembly—Primary Side Figure 40. Evaluation Board Layout Assembly—Secondary Side Rev Page AD9748 ...
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... AD9748ACPRL7 −40°C to +85°C 1 AD9748ACPZ −40°C to +85°C 1 AD9748ACPZRL7 −40°C to +85°C AD9748ACP-PCB Pb-free part. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03211–0–12/05(A) 5.00 BSC SQ ...