The AD660 DACPORT® is a complete 16-bit single-chip digital-to-analog converter with an on-chip voltage reference, dual buffer latches, and an output amplifier. It is manufactured using Analog Devices' BiMOS II process and enables high-precision bipolar linear circuitry with low-power CMOS logic on the same chip.
The AD660 architecture ensures that 15-bit monotonicity does not change over time and temperature. The integral nonlinearity and differential nonlinearity error are maintained at ±0.003% (maximum). The on-chip output amplifier enables voltage outputs to be within 1/2 LSB of accuracy (full-scale stepping) at 10 μs.
The AD660 is equipped with an extremely flexible digital interface. Data can be loaded into the AD660 in serial mode or in dual 8-bit byte format. Achieved through two digital input pins with dual functionality. The serial mode input format is selected by pin and can be MSB or LSB first. With serial output pins, users can daisy-chain several AD660 devices: shifting data via the input latch to the next DAC, minimizing the number of control lines required to connect the SIN, CS, and LDAC. The byte mode input format is also flexible, with the option to load high-byte or low-byte data first. The dual-buffer latch structure not only eliminates data skew errors but also enables simultaneous updates of DACs in multi-DAC systems.
AD660 is divided into five levels. The AN and BN grades are rated for a temperature range of −40°C to +85°C and are available in a 24-pin, 300-mil plastic DIP package. The AR and BR stages are also rated for a temperature range of −40°C to +85°C and are available in a 24-pin SOIC package. The SQ stage is available in a 24-pin, 300 mil CERDIP package and is also available in MIL-STD-883 compliant models. Please refer to the AD660SQ/883B military-grade datasheet for relevant technical specifications and test conditions.
Product features:
1. AD660是一款完整的16位单芯片DAC，内置一个基准电压源、双缓冲锁存器和一个输出放大器。
2. 内部嵌入式齐纳基准电压源经激光调整至10.000 V，最大误差为±0.1%，温度漂移性能为±15 ppm/°C。该基准电压源可用于外部应用。
3. AD660的输出范围通过引脚编程，可以设置为0 V至10 V单极性输出范围或−10 V至+10 V双极性输出范围。无需外部元件。
4. AD660同时提供直流与交流特性。直流特性包括±1 LSB积分非线性(INL)误差和±1 LSB微分非线性(DNL)误差。交流特性包括0.009% THD + N和83 dB信噪比(SNR)。
5. AD660的双缓冲锁存器不仅可以消除数据偏斜误差，还能够在多DAC应用中同时更新各DAC。
6. 无论DAC处于单极性模式还是双极性模式，清零功能都能够异步设置输出为0 V。
7. 满量程步进时，输出放大器可以在10 μs内达到±1/2 LSB精度，1 LSB步进时在2.5 μs内达到全温度范围。当加载满量程步进时，输出毛刺典型值为15 nV-s。