AD768AR Analog Devices Inc, AD768AR Datasheet
AD768AR
Specifications of AD768AR
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AD768AR Summary of contents
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FEATURES 30 MSPS Update Rate 16-Bit Resolution Linearity: 1/2 LSB DNL @ 14 Bits 1 LSB INL @ 14 Bits Fast Settling Full-Scale Settling to 0.025% SFDR @ 1 MHz Output: 86 dBc THD @ 1 MHz ...
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AD768–SPECIFICATIONS Parameter RESOLUTION 1 DC ACCURACY Linearity Error MIN MAX Differential Nonlinearity MIN MAX Monotonicity (13-Bit) ANALOG OUTPUT Offset Error Gain Error 2 Full-Scale ...
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... Exposure to absolute maximum rating for extended periods may affect device reliability. ORDERING GUIDE Model Package Description AD768AR 28-Pin 300 mil SOIC AD768ACHIPS Die AD768-EB AD768 Evaluation Board CAUTION ESD (electrostatic discharge) sensitive device ...
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AD768 1 WAFER TEST LIMITS ( Parameter 2 Integral Nonlinearity 2 Differential Nonlinearity Offset Error Gain Error Reference Voltage Positive Supply Current Negative Supply Current Power Dissipation NOTES 1 Electrical test are performed at wafer ...
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DEFINITIONS OF SPECIFICATIONS Linearity Error (Also Called Integral Nonlinearity or INL) Linearity error is defined as the maximum deviation of the ac- tual analog output from the ideal output, determined by a straight line drawn from zero to full scale. ...
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AD768 DAC TRANSFER FUNCTION The AD768 may be used in either current-output mode with the output connected to a virtual ground, or voltage-output mode with the output connected to a resistive load. In current output mode (DAC CODE/65536) ...
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REFERENCE OUTPUT The internal 2.5 V bandgap reference is provided for generation of the I current, and must be compensated externally with REFIN a capacitor of 0 greater from REFOUT to REFCOM external reference is used, ...
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AD768 –2 –4 –6 – DIGITAL INPUT CODE – k Figure 9. Typical DNL Performance The outputs have a compliance range of –1 +5.0 ...
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0.80 –0.9424 –1V OUT –0.9433 0.70 –0.9443 0.60 –0.9453 0.50 0.40 –0.9462 0.30 –0.9472 0.20 –0.9481 –0.9498 0.10 0.05 0.025 –0.9500 ...
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AD768 APPLYING THE AD768 OUTPUT CONFIGURATIONS The following sections illustrate some typical output configura- tions for the AD768. While most figures take the output at IOUTA, IOUTB can be interchanged in all cases. Unless other- wise noted assumed ...
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For the values given in Figure 24, I equals 4 mA, which results nominal unipolar output swing Note, since A1 has an inverting gain of approximately –4 and a noise gain ...
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AD768 Figure 28. Printed Circuit Board Ground Plane Layout Figure 29. Printed Circuit Board Power Plane Layout –12– REV. B ...
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If properly implemented, ground planes can perform a host of functions on high speed circuit boards: bypassing, shielding, current transport, etc. In mixed signal design, the analog and digital portions of the board should be distinct from each other, with ...
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AD768 AD768 IN MULTITONE TRANSMITTERS (FOR ADSL) Communications applications frequently require aspects of component performance that differ significantly from the simple, single tone signals used in typical SNR and THD tests. This is particularly true for spread-spectrum and frequency divi- ...
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AD768 EVALUATION BOARD GENERAL DESCRIPTION The AD768- evaluation board for the AD768 16-bit 30 Msps D/A converter. Careful attention to layout and circuit design combined with analog and digital prototyping areas al- lows the user to easily and ...
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AD768 Clock Input An external sample clock must be provided to either the BNC connector labeled “CLOCK” Pin 33 of the IDC connec- tor. This clock must comply with the logic levels outlined in the AD768 data sheet. ...
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R12 10k 1µF R1 SW2 499 2 TP1 R13 R14 R15 R16 R17 R18 0 J1 ...
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AD768 Figure 36. Silkscreen Layer (Not to Scale) –18– REV. B ...
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Figure 37. Component Side PCB Layout (Not to Scale) Figure 38. Solder Side PCB Layout (Not to Scale) REV. B –19– AD768 ...
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AD768 0.0118 (0.30) 0.0040 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). R-28 300 Mil 28-Pin SOIC 0.7125 (18.10) 0.6969 (17.70 0.2992 (7.60) 0.2914 (7.40) 0.4193 (10.65) 0.3937 (10.00 PIN 1 0.1043 (2.65) 0.0926 (2.35) ...