AD1868 Analog Devices, AD1868 Datasheet
AD1868
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AD1868 Summary of contents
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... Typically, the AD1868 dissipates 50 mW. The AD1868 is packaged in either a 16-pin plastic DIP or a 16- pin plastic SOIC package. Operation is guaranteed over the tem- perature range of – +85 C and over the voltage supply range of 4 ...
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... 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 AD1868 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... Typical Performance of the AD1868 –30 –40 –50 –60 –70 –80 –90 –100 0.5 2.5 4.5 6.5 8.5 10.5 12.5 14.5 FREQUENCY – kHz Figure 1. THD+N vs. Frequency –20 –30 –40 –50 –60 –70 –80 –90 4.4 4.6 4.8 VOLTAGE SUPPLY Figure 3. THD+N vs. Supply Voltage –20 –40 –60 –80 –100 –50 –30 – ...
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... FUNCTIONAL DESCRIPTION The AD1868 is a complete, voltage output dual 18-bit digital audio DAC which operates with a single +5 volt supply. As shown in the block diagram, each channel contains a voltage reference, an 18-bit DAC, an output amplifier, an 18-bit input latch, and an 18-bit serial-to-parallel input register. ...
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... Figure 7 illustrates the cor- rect connection of the digital and analog supply bypass capacitors. An important feature of the AD1868 audio DAC is its ability to operate at reduced power supply voltages. This feature is very important in portable battery operated systems. As the batteries discharge, the supply voltage drops ...
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... LL and LR may be connected together. For systems using only one DATA signal, DR and DL may be connected together. Data is transmitted to the AD1868 in a bit stream composed of 18-bit words with a serial, twos complement, MSB first format. Left and right channels share the Clock (CLK) signal. ...
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... TIMING Figure 10 illustrates the specific timing requirements that must be met in order for the data transfer to be accomplished prop- erly. The input pins of the AD1868 are TTL and 5 V CMOS compatible. The maximum clock rate of the AD1868 is specified least 13.5 MHz. This clock rate allows data transfer rates ...
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... AD1868 ADDITIONAL APPLICATIONS In addition to CD player designs, the AD1868 is suitable for similar applications such as DAT, portable musical instru- ments, Laptop and Notebook personal computers, and PC au- dio I/O boards. The circuit techniques illustrated are directly applicable in those applications. SM5813 BCKO 4 WCKO ...
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... BCO 6 11 WCO 10 7 DRO DLO DD Figure 14. AD1868 with Yamaha YM3434 Digital Filter OTHER DIGITAL AUDIO COMPONENTS AVAILABLE FROM ANALOG DEVICES – 16-BIT 16-BIT LATCH DGND 2 +V SERIAL 3 L INPUT REGISTER NC 4 CLK 5 CONTROL ...
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... AD1868 – 16-BIT 16-BIT LATCH DAC DGND 2 +V SERIAL L 3 INPUT REGISTER NC 4 CLK 5 CONTROL LOGIC LE 6 DATA AD1851 CONNECT AD1851 16-Bit PCM Audio DAC 107 dB SNR Minimum 16 F Capability Supply –V 1 AD1864 S TRIM 2 MSB 3 REFERENCE REFERENCE ...
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... INPUT & 20-BIT 6 DIGITAL DAC LE OFFSET 7 DATA – AD1862 AD1862 20-Bit, Low Noise Audio DAC 110 dB SNR Minimum THD+N = 0.0019% (typical Gain Linearity 16-Pin Plastic DIP –11– AD1868 + ADJ AGND I 11 OUT ...
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... AD1868 (4.57) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N) Package 16 9 0.31 0.25 (7.87) (6.35 0.87 (22.1) MAX 0.035 (0.89) 0.18 0.125 (3.18) MIN 0.033 (0.84) 0.1 (2.54) 0.018 (0.46) Plastic SOIC (R) Package 16 9 0.299 (7.60 0.413 (10.50) 0.012 (0.3) 0.050 0.019 (0.49) (1.27) REF 0.030 (0.75) 0.042 (1.07) 0.013 (0.32) –12– 0.18 (4.57) MAX 0.011 (0.28) 0.3 (7.62) 0.419 (10.65) 0.104 (2.65) REV. A ...