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hello!
1) the output voltage at the "VCM" pin does not correspond to the passport level of +2.5 V (at the supply voltage of the chip along the "AVDD5" line +5.0 V) and is +3.14B
2) the digital output data of the ADC is strongly distorted
3) - the identification data of the chips (Die revision), read via the SPI bus (0x01), do not correspond to the passport (0x61);
4) - the readings of the integrated temperature sensors of the chips, read over the SPI bus, do not correspond to reality (at +115 ° C), at a real temperature on the chip housing not exceeding +50 ° C\\
How can these problems be solved?
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您好,
这里是中文论坛,您可以使用中文发帖;
1、您是DC耦合输入吗?各供电电压测试是否正常?您可以附上前端模拟输入电路吗?输入模拟信号幅值是什么?
2、输出数字信号走线是不是比较长?您可以附上失真波形吗?
3、
3) - the identification data of the chips (Die revision), read via the SPI bus (0x01), do not correspond to the passport (0x61);
这里是什么意思?很抱歉没有看懂,其他寄存器可以正常读写吗?写入后可以正确读出吗?
4、寄存器0x05您配置的是什么?您读到的0x08寄存器值是多少?
很抱歉,TI 论坛旨在解决客户在使用TI产品过程中遇到的技术问题,关于芯片上面的PG1.2,建议您请按照以下方式联系客户支持部门,会有客服为您提供帮助。