说明：  AD7710开发可用代码 24位的AD采样芯片 ，不丢失码 非线性度为0.0015％ 双通道可编程增益前端 增益范围为1 到128 差动输入 低通滤波器，截止频率可通过编程设置 校准系数可读写 具有串口的双向微控制器 可选择内外基准参考电源 可提供单端或者双端补偿 功耗低（一般为25mW），还有待机模式（一般为7mW）
(AD7710 24-bit code, the development of AD can sample chips, do not lose yards nonlinearity is 0.0015 front-end gain of two-channel programmable gain range of 1 to 128 differential input low-pass filter cutoff frequency can be programmed calibration coefficients read and write the two-way serial microcontroller with internal and external benchmark reference power supply option provides compensation for single-ended or double-ended low power consumption (typically 25mW), there are standby mode (generally 7mW))