Low Power, Buffered 24-Bit Sigma-Delta ADC

GENERAL DESCRIPTION The AD7791 is a low power, complete analog front end for low frequency measurement applications. It contains a low noise 24-bit ∑-∆ ADC with one differential input that can be buffered or unbuffered. FEATURES Power Supply: 2.5 V to 5.25 V operation Normal

文件：308.18 Kbytes 页数：20 Pages

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Devices Connected

文件：603.39 Kbytes 页数：5 Pages

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Low Power, Buffered 24-Bit Sigma-Delta ADC

文件：525.81 Kbytes 页数：21 Pages

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4位、单通道、超低功耗Σ-Δ型ADC

AD7790/AD7791均为适合低频测量应用的低功耗、完整模拟前端。采用3 V电源时，二者的典型功耗为65 µA；采用5 V电源、禁用缓冲时，典型功耗为75 µA。AD7791内置一个24位Σ-Δ ADC，其中含有一个可缓冲或无缓冲差分输入。AD7790是AD7791的16位版本。AD7790在默认输出数据速率16.6 Hz时具有16位峰－峰值分辨率，而AD7789在此输出数据速率时则具有19位峰－峰值分辨率，相当于21.5位有效分辨率。\n\n AD7791采用内部时钟工作，因此，用户不必为其提供时钟源。输出数据速率可通过软件编程设置，可在9.5 Hz至120 Hz的范围内变化。 • 下载示例代码\n\n• 电源：\n- 工作电压：2.5 V至5.25 V\n- 正常模式：最大75 µA\n- 省电模式：最大1 µA\n\n• 均方根（RMS）噪声：1.1 µV\n（9.5 Hz更新速率时）\n\n• 19.5位峰－峰值分辨率（22位有效分辨率）\n\n• 积分非线性：3.5 ppm（典型值）;

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Low Power, Buffered 24-Bit Sigma-Delta ADC

GENERAL DESCRIPTION The AD7791 is a low power, complete analog front end for low frequency measurement applications. It contains a low noise 24-bit ∑-∆ ADC with one differential input that can be buffered or unbuffered. FEATURES Power Supply: 2.5 V to 5.25 V operation Normal

文件：308.18 Kbytes 页数：20 Pages

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Low Power, Buffered 24-Bit Sigma-Delta ADC

GENERAL DESCRIPTION The AD7791 is a low power, complete analog front end for low frequency measurement applications. It contains a low noise 24-bit ∑-∆ ADC with one differential input that can be buffered or unbuffered. FEATURES Power Supply: 2.5 V to 5.25 V operation Normal

文件：308.18 Kbytes 页数：20 Pages

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Low Power, Buffered 24-Bit Sigma-Delta ADC

文件：465.63 Kbytes 页数：20 Pages

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Low Power, Buffered 24-Bit Sigma-Delta ADC

文件：525.81 Kbytes 页数：21 Pages

AD

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Low Power, Buffered 24-Bit Sigma-Delta ADC

文件：525.81 Kbytes 页数：21 Pages

AD

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Low Power, Buffered 24-Bit Sigma-Delta ADC

文件：525.81 Kbytes 页数：21 Pages

AD

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