ADF的中英文资料
The AD667 is a complete voltage output 12-bit digital-to-analog converter including a high stability buried Zener voltage reference and double-buffered input latch on a single chip. The converter uses 12 precision high speed bipolar current steering switches and a laser trimmed thin-film resistor network to provide fast settling time and high accuracy.
AD667是一个完整的电压输出12位数模转换器，包括高稳定性埋入齐纳电压基准和双缓冲输入锁存在一个芯片上。该转换器使用12个精密高速双极型电流转向开关和一个激光修整薄膜电阻网络，以提供快速稳定时间和高精度。
Microprocessor compatibility is achieved by the on-chip double-buffered latch. The design of the input latch allows direct interface toor 16-bit buses. The 12 bits of data from the first rank of latches can then be transferred to the second rank, avoiding generation of spurious analog output values. The latch responds to strobe pulses as short as 100 ns, allowing use with the fastest available microprocessors.
微处理器兼容性是通过片上双缓冲锁存器实现的。输入锁存器的设计允许直接接口或16位总线。然后，从第一秩锁存器的12位数据可以被转移到第二秩，避免产生伪模拟输出值。锁存器响应选通脉冲短至100纳秒，允许使用的可用微处理器。
The functional completeness and high performance in the AD667 results from a combination of advanced switch design, high speed bipolar manufacturing process, and the proven laser wafer-trimming (LWT) technology. The AD667 is trimmed at the wafer level and is specified to ± LSB over the full operating temperature range.
AD667的功能完整性和高性能是由先进的开关设计、高速双极制造工艺和已证实的激光晶圆修整（LWT）技术结合而成的。AD667在晶圆级被修整，并在整个工作温度范围内被指定为± LSB。
The subsurface (buried) Zener diode on the chip provides a low noise voltage reference which has long-term stability and temperature drift characteristics comparable to the best discrete reference diodes. The laser trimming process which provides the excellent linearity, is also used to trim the absolute value of the reference as well as its temperature coefficient. The AD667 is thus well suited for wide temperature range performance with ±LSB maximum linearity error and guaranteed monotonicity over the full temperature range.
芯片上的地下（埋藏）齐纳二极管提供了一种低噪声电压基准，其具有与离散参考二极管类似的长期稳定性和温度漂移特性。激光修整过程提供了良好的线性度，也用来调整参考值的绝对值及其温度系数。因此，AD667非常适合宽温度范围的性能，±1LSB线性误差和保证在整个温度范围内的单调性。
ADF的特征
完整的12位D功能双缓冲锁存片上输出放大器高稳定性埋藏齐纳参考
单片机结构
温度单调性
线性保证温度LSB值
保证运行±12伏或±15伏电源
低功耗
TTLCMOS兼容逻辑输入
低逻辑输入电流