控制芯片STC90C516RD+ ,AD7705,16位∑－Δ模数转换芯片，调试可用。附有中英文手册。AD7705是完整的16 位AD转换器。若外接晶体振荡器、精密基准源和少量去耦电容, 即可连续进行A D转换。 采用SP I Q SP I兼容的三线串行接口,具有高分辨 率、宽动态范围、自校准、优良的抗噪声性能以及低电压低功耗等特点， 非常适合仪表测量、工业控制等领域的应用。　　-The control chip STC90C516RD+, AD7705,16 bit sigma delta analog-to-digital conversion chip, debugging available. With Chinese and English manual. AD7705 is a complete 16 bit AD converter. If the external crystal oscillator, precision reference source and a small amount of decoupling capacitors, you can continue to carry out the D A conversion. The SP SP I Q I is compatible with three wire serial interface with high resolution rate, wide dynamic range, self calibration, excellent anti noise performance and low voltage, low power characteristics, very suitable for the application of instrumentation, industrial control and other fields.