AD1879JD Analog Devices, AD1879JD Datasheet
AD1879JD
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AD1879JD Summary of contents
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... Protected by U.S. Patent Numbers 5055843, 5126653, and others pending. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...
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AD1878/AD1879–SPECIFICATIONS TEST CONDITIONS UNLESS OTHERWISE NOTED Supply Voltages 5 Ambient Temperature 25 Input Clock (F ) 12.288 CLOCK Input Signal 974 –0.5 All minimums and maximums tested except as noted. ANALOG PERFORMANCE AD1879 Resolution AD1878 Resolution Clock Input Frequency Range ...
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DIGITAL INPUTS 360 1 DIGITAL TIMING ...
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... S Specifications subject to change without notice. Model AD1878JD AD1879JD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD1878/AD1879 features proprietary ESD protection circuitry, permanent dam- age may occur on devices subjected to high energy electrostatic discharges ...
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DEFINITIONS Dynamic Range The ratio of a full-scale output signal to the integrated output noise in the passband (0 kHz to 20 kHz), expressed in decibels (dB). Dynamic range is measured with a –60 dB input signal and is equal ...
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... Through careful design, this transfer function can be specified to high-pass filter the quantization noise out of the audio band into higher frequency regions. See Figure 27. The Analog Devices’ AD1878/AD1879 also incorporates feedback resonators from the third integrator’s output to the second integrator’s input and from the fifth integrator’ ...
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Sample Delay The sample delay or “group delay” of the AD1878/AD1879 is dominated by the processing time of the digital decimation fil- ter. FIR filters convolve a vector representing time samples of the input with an equal-sized vector of coefficients. ...
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... NPO namic range and 98 dB S/(THD+N) in your system. Schematics of our AD1878/AD1879 Evaluation Board, which implements REFL these recommendations, are available from Analog Devices. .0047 µF 15 NPO The principles and their rationales are listed below in descend- 200 ing order of importance ...
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This input bypassing mini- mizes the RF transmission and reception capability of the AD1878/AD1879 inputs. • For best performance, do not use ...
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AD1878/AD1879 In the “slave modes,” the bit clock (BCK), the word clock (WCK), and the left/right clock (LRCK) are user-supplied in- puts. Note that, for performance reasons, the AD1878/AD1879 does not support asynchronous operation; these clocks must be externally derived ...
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BCK I/O WCK INPUT LRCK I/O PREVIOUS DATA AD1878 LSB ZEROS DATA OUTPUT Figure 10. AD1878 64-Bit Frame Output Timing with WCK as Input: WCK Held LO Until 16th BCK (Master Mode or Slave ...
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AD1878/AD1879 Also available with the AD1878/AD1879 is a 32-bit frame mode where the 1879’s 18-bit output is truncated to 16-bit words and for both parts the output packed “tightly” into two 16-bit fields in the 32-bit frame as shown in ...
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CLOCK INPUT t DLYCK BCK OUTPUT (64• PREVIOUS NEW LRCK OUTPUT WCK INPUT DATA OUTPUT Figure 16. AD1878/AD1879 Master Mode Clock Timing: WCK Input B B+1 B+2 L CLOCK INPUT t HLD t SET t BCK INPUT (64•F ...
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AD1878/AD1879 DATA SRD AD1879 BCK SCK WCK SC2 LRCK SC1 Figure 19. AD1879 to DSP56001 Interface To configure the DSP56001 for proper operation, the CRA register must he programmed for a 24-bit receive data register (RX). The CRB register must ...
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FREQUENCY – Hz Figure 23. AD1879 S/(THD+N)—10 kHz Tone at –10 dBFS (4k-Point FFT) 1.0 0.8 0.6 0.4 0.2 0.0 –0.2 –0.4 –0.6 –0.8 –1.0 ...
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AD1878/AD1879 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 21.5 22.0 22.5 23.0 23.5 24.0 24.5 FREQUENCY – kHz Figure 29. AD1878/AD1879 Digital Filter Signal Transfer Function— Transition Band: 21.5 kHz to 26.5 kHz ...