MAX197AEAI+T 芯片评估系统：8通道数据采集规格详解
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更新于2024-08-04
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"MAX197AEAI+T ADI芯片是电子元器件，其相关的中文版规格手册提供了详尽的技术参数和应用指南。MAX197是一款8通道数据采集系统，适用于各种需要低功耗、高精度信号处理的场合。这款评估系统包括MAX197评估套件和Maxim的80C32或68HC16微控制器模块，以展示芯片的功能。"
在手册中，"General Description"部分提到，MAX197评估系统（EV系统）是一个完整的低成本解决方案，它集成了一个MAX197评估套件和微控制器模块。该系统兼容IBM PC的软件，提供了一个用户友好的界面，用于演示MAX197的各种特性，并且提供了源代码供用户参考和学习。
"Features"部分列出了一些关键特性：
1. 采用验证过的PC板布局，确保了电路设计的稳定性和可靠性。
2. 完整的评估系统，适合全面测试和了解MAX197的功能。
3. 板上提供了方便的测试点，便于工程师进行硬件调试和性能测试。
4. 数据记录软件，可用于收集和分析MAX197在实际应用中的表现。
5. 提供源代码，增强了用户对系统控制的灵活性。
6. 套件已完全组装和测试，开箱即可使用。
7. 用户可以选择80C32或68HC16微控制器模块，根据项目需求进行定制。
8. 该评估套件不仅适用于MAX197，还可以评估MAX199，只需额外订购MAX199样品。
MAX197芯片自身的特点可能包括高输入阻抗、低噪声、宽电源电压范围以及高速采样能力。它适用于工业自动化、医疗设备、数据记录仪和其他需要精确模拟信号处理的领域。通过评估套件，用户可以轻松地测试和验证MAX197在不同条件下的性能，从而确定是否满足其特定应用的需求。
总结来说，MAX197AEAI+T ADI芯片的中文规格手册是开发人员和工程师了解和评估该芯片功能的重要参考资料，提供了完整的测试环境和软件支持，有助于快速集成到设计项目中。同时，该评估套件的灵活性使得用户可以根据自己的系统需求选择合适的微控制器，进一步优化设计方案。
Evaluates: MAX197/MAX199
MAX197 Evaluation Kit
_______________________________________________________________________________________ 3
__Detailed Description of Software
Reading the MAX197
The EV kit reads the MAX197 using the algorithm
shown in source code Listings 1a and 1b.
When power is first applied, the MAX197 is in external
clock mode. However, the initialization software recon-
figures the MAX197 to internal clock mode.
The EV kit software demonstrates the MAX197’s many
modes of operation. When writing your own application-
specific software, one of the following simplified algo-
rithms (shown in bold type) should be implemented.
These algorithms show the options available using the
power-down and acquisition mode control bits. Except
where otherwise specified, ACQMOD = 0.
When using an external reference, a power-up delay is
not necessary. When using the MAX197’s internal ref-
erence, allow time for the REF capacitor to charge at
power-up and when exiting full power-down mode. For
a complete description of all control bits, refer to the
MAX197 data sheet.
Internal acquisition mode, standby power-down
between conversions:
1) Begin conversion by writing PD1 = 1, PD0 = 0. This
powers up the MAX197, causing it to perform a
conversion, then go into standby mode after con-
version completes.
2) After the INT pin goes low, read the result from the
MAX197.
Internal acquisition mode, full power-down between
conversions:
1) Power up the MAX197 by writing PD1 = 1, PD0 = 0
(standby).
2) Execute a power-up delay, to allow the reference
capacitor time to recharge.
3) Begin conversion by writing PD1 = 1, PD0 = 1 (full
power-down).
4) After the INT pin goes low, read the result from the
MAX197.
Internal acquisition mode, SHDN pin low between
conversions:
1) Power up the MAX197 by setting the SHDN pin
high.
2) Execute a power-up delay to allow the reference
capacitor time to recharge.
3) Begin conversion by writing PD1 = 1, PD0 = 0
(standby).
4) After the INT
pin goes low, read the 16-bit result
from the MAX197.
5) Power down the MAX197 by setting the SHDN pin
low.
External acquisition mode, standby power-down
between conversions:
1) Begin acquisition time by writing PD1 = 1, PD0 = 0
(standby), ACQMOD = 1.
2) Execute the acquisition time delay.
3) Begin conversion by writing PD1 = 1, PD0 = 0
(standby), ACQMOD = 0.
4) After the INT pin goes low, read the result from the
MAX197.
External acquisition mode, full power-down
between conversions:
1) Power up the MAX197 by writing PD1 = 1, PD0 = 0
(standby).
2) Execute a power-up delay, to allow the reference
capacitor time to recharge.
3) Begin acquisition time by writing PD1 = 1, PD0 = 0
(standby), ACQMOD = 1.
4) Execute the acquisition time delay.
5) Begin conversion by writing PD1 = 1, PD0 = 1 (full
power-down), ACQMOD = 0.
6) After the INT pin goes low, read the result from the
MAX197.
External acquisition mode, SHDN pin low between
conversions:
1) Power up the MAX197 by setting the SHDN pin
high.
2) Execute a power-up delay, to allow the reference
capacitor time to recharge.
3) Begin acquisition time by writing PD1 = 1, PD0 = 0
(standby), ACQMOD = 1.
4) Execute the acquisition time delay.
5) Begin conversion by writing PD1 = 1, PD0 = 0
(standby), ACQMOD = 0.
6) After the INT pin goes low, read the result from the
MAX197.
7) Power down the MAX197 by setting the SHDN pin
low.
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