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Description
Single Supply Dual 18-Bit Audio DAC
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FEATURES
Dual Serial Input, Voltage Output DACs
Single +5V Supply
0.004%THD +N(typ)
Low Power: 50mW (typ)
108 dB Channel Separation (min)
Operates at 8x Oversampling
16-Pin Plastic DIP or SOIC Package
APPLICATIONS
Portable Compact Disc Players
Portable DAT Players and Recorders
Automotive Compact Disc Players
Automotive DAT Players
Multimedia Workstations
PRODUCT DESCRIPTION
The AD1868 is a complete dual 18-bit DAC offering excellent performance while requiring a single +5V power supply. It is fabricated on Analog Devices' ABCMOS wafer fabrication process. The monolithic chip includes CMOs logic elements, bipolar and MOS linear elements, and laser-trimmed thin-film resistor elements. Careful design and layout techniques have resulted in low distortion,low noise, high channel separation,and low power dissipation.
The DACs on the AD1868 chip e m ploy a partially segmented architecture. The first three MSBs of each DAC are segmented into seven elements. The 15 LSBs are produced using standardR-2R techniques. The segments and R-2R resistors are laser trim med to provide extremely low total harmonic distortion.The AD1868 requires no deglitcher or trimming circuitry. Low noise is achieved through the use of two noise-reduction capacitors. Each DAC is equipped with a high performance output amplifier. These amplifiers achieve fast settling and high slew rate, producing ±1V signals at load currents up to ±1mA. The buffered output signal range is 1.5 V to 3.5 V. Reference voltages of 2.5 V are provided, eliminating the need for“False Ground"networks.
A versatile digital interface allows the AD1868 to be directly connected to all digital filter chips. Fast CMOS logic elements allow for an input clock rate of up to 13.5 MHz. This allows for operation at 2.,4., 8 ., or 16. the sampling frequency for each channel. The digital input pins of the A D1868 are TTL and +5 V CMOS compatible.
The AD1868 operates on +5V power supplies. The digital supply,VL, can be separated fro m the analog supply, VS, for reduced digital feed through. Separate analog and digital ground pins are also provided.In systems employing a single +5 volt power supply, VL and VS should be connected together. In battery operated systems, operation will continue even with reduced supply voltage. Typically, the AD1868 dissipates 50mW .
The AD1868 is packaged in either a 16-pin plastic DIP or a 16-pin plastic s0IC package. Operation is guaranteed over the temperature range of -35℃ to +85℃ and over the voltage supply range of 4.75 V to 5.25 V.
PRODUCT HIGHLIGHTS
1.Single-supply operation @ +5V
2. 50mW power dissipation (typical)
3. THD +N is 0.004 % (typical).
4. Signal-to-Noise Ratio is 97.5dB (typical)
5. 108dB channel separation (minimum )
6. Compatible with all digital filter chips
7. 16-pin DIP and 16-pin SOIC packages
8. No deglitcher required.
9. No external adjustments required.
Preview of the first 3 pages of the data sheet
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10000 buyer reviews from United States
Joseph Scott
Length of registration:7 years
I recently ordered an IC AD1868R from your company and I am very pleased with the product. It is a high-performance, low-power audio codec with a wide range of features including stereo ADC/DAC, headphone amplifier, and programmable gain amplifier. The device also has a low-noise microphone input and a low-power shutdown mode. I am impressed with the performance of the IC and the ease of use. Your
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03/17/2023
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Warranty
All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
AD1868R
AD1868R has several brands around the world that may have alternate names for AD1868R due to regional differences or acquisition. AD1868R may also be known as the following names:
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Stock Status: 5000
Minimum: 1
Total Price:
Unit Price:8.86800
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