AD1851R-J:  16-Bit/18-Bit, 16 3 FS PCM Audio DACs SOIC-16封装

The AD1851/AD1861 is a monolithic PCM audio DAC. The AD1851 is a 16-bit device, while the AD1861 is an 18-bit device. Each device provides a voltage output amplifier, DAC, serial-to-parallel register and voltage reference. The digital portion of the AD1851/AD1861 is fabricated with CMOS logic elements that are provided by Analog Devices' 2 µm ABCMOS process. The analog portion of the AD1851/AD1861 is fabricated with bipolar and MOS devices as well as thin-film resistors.

This combination of circuit elements, as well as careful design and layout techniques, results in high performance audio play-back. Laser-trimming of the linearity error affords low total harmonic distortion. An optional linearity trim pin is provided to allow residual differential linearity error at midscale to be eliminated. This feature is particularly valuable for low distortion reproductions of low amplitude signals. Output glitch is also small, contributing to the overall high level of performance. The output amplifier achieves fast settling and high slew rates, providing a full ±3 V signal at load currents up to 8 mA. When used in current output mode, the AD1851/AD1861 provides a ±1 mA output signal. The output amplifier is short circuit protected and can withstand indefinite shorts to ground.

The serial input interface consists of the clock, data and latch enable pins. The serial 2s complement data word is clocked into the DAC, MSB first, by the external clock. The latch enable signal transfers the input word from the internal serial input register to the parallel DAC input register. The AD1851 input clock can support a 12.5 MHz data rate, while the AD1861 input clock can support a 13.5 MHz data rate. This serial input port is compatible with second generation digital filter chips used in consumer audio products. These filters operate at over-sampling rates of 2x, 4x, 8x and 16x sampling frequencies.

The critical specifications of THD+N and signal-to-noise ratio are 100% tested for all devices.

The AD1851/AD1861 operates with ±5 V power supplies, making it suitable for home use markets. The digital supply, VL, can be separated from the analog supplies, VS and -VS , for reduced digital crosstalk. Separate analog and digital ground pins are also provided. Power dissipation is 100 mW typical.

The AD1851/AD1861 is available in either a 16-pin plastic DIP or a 16-pin plastic SOIC package. Both packages incorporate the industry standard pinout found on the AD1856 and AD1860 PCM audio DACs. As a result, the AD1851/AD1861 is a drop-in replacement for designs where ±5 V supplies have been used with the AD1856/AD1860. Operation is guaranteed over the temperature range of -25°C to +70°C and over the voltage supply range of ±4.75 V to ±5.25 V.

AD1851R-J 特点
AD1851R-J 功能框图

技术指标
DAC DNR (dB) 96dB DAC THD+N @ 1 kHz (-3dB) 90dB
SNR (dB) 110dB Product Description 16-Bit, 16 3 FS PCM Audio DACs Dual 5V Supplies
AD1851 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD1851N-J 量产 16 ld PDIP 16 商业
AD1851NZ 量产 16 ld PDIP 16 商业
AD1851NZ-J 量产 16 ld PDIP 16 商业
AD1851R 量产 16 ld SOIC - Wide 16 商业
AD1851R-J 量产 16 ld SOIC - Wide 16 商业
AD1851R-REEL7 量产 16 ld SOIC - Wide 16 商业
AD1851RZ 量产 16 ld SOIC - Wide 16 商业
AD1851RZ-J 量产 16 ld SOIC - Wide 16 商业
AD1851RZ-REEL7 量产 16 ld SOIC - Wide 16 商业
AD1851R-J 应用技术支持与电子电路设计开发资源下载
  1. AD1851 数据手册DataSheet下载 . pdf
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf