ZHCAET5 December 2024 TAA5212 , TAA5242
本节介绍了当 PLL 处于禁用状态且 AVDD 设置为 1.8V 和 3.3V 时,TAA52xx 器件的典型电流消耗。
通过设置相应的位字段 B0_P0_R52[7] (PLL_DIS) 和启用 (ADC_LOW_PWR_FILT) 位字段来禁用 PLL:B0_P0_R78[2](PLL 已禁用)。
默认情况下,位时钟用作内部块的时钟源。或者,如果系统具有可用的低抖动时钟,则可以通过支持 GPI 的引脚(GPIOx 或 GPIx)之一在器件中使用外部时钟源 (CCLK)。
在表 2-1 中,功耗测量已禁用所有双二阶滤波器,ADC 输入(或输入)接地,并且通过 GPIO1 引脚将外部 CCLK 作为时钟源提供给器件。
| CCLK 频率 (MHz) | 采样频率 (kHz) | BCLK-FS 比率 | 字长 | 使能通道 | ADC CIC 4 阶 | ADC DEMRATE 过载 2X | AVDD = 1.8V | AVDD = 3.3V | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AVDD 电流 (mA) | 动态范围(dB 加权) | THD+N (dB) | AVDD 电流 (mA) | 动态范围(dB 加权) | THD+N (dB) | |||||||
| 12.288 | 8 | 32 | 32 | 1 | 禁用 | 禁用 | 2.88 | 118.75 | -106.12 | 3.21 | 124.61 | -97.04 |
| 12.288 | 8 | 32 | 32 | 1 | 禁用 | 启用 | 2.75 | 118.8 | -107.24 | 3.08 | 124.73 | -97.74 |
| 12.288 | 8 | 32 | 32 | 1 | 启用 | 禁用 | 2.88 | 118.78 | -105.73 | 3.21 | 124.88 | -97.22 |
| 12.288 | 8 | 48 | 24 | 2 | 禁用 | 禁用 | 4.64 | 118.95 | -105.49 | 5.14 | 124.68 | -97.39 |
| 12.288 | 8 | 48 | 24 | 2 | 禁用 | 启用 | 4.43 | 118.5 | -107.13 | 4.93 | 124.74 | -97.64 |
| 12.288 | 8 | 48 | 24 | 2 | 启用 | 禁用 | 4.64 | 118.63 | -105.28 | 5.15 | 124.76 | -97.31 |
| 12.288 | 16 | 24 | 24 | 1 | 禁用 | 禁用 | 3.28 | 115.34 | -104.35 | 3.62 | 121.33 | -96.9 |
| 12.288 | 16 | 24 | 24 | 1 | 禁用 | 启用 | 3.15 | 115.37 | -106.1 | 3.48 | 121.32 | -97.66 |
| 12.288 | 16 | 24 | 24 | 1 | 启用 | 禁用 | 3.27 | 115.49 | -104.28 | 3.61 | 121.4 | -96.94 |
| 12.288 | 16 | 48 | 24 | 2 | 禁用 | 禁用 | 5.42 | 115.42 | -103.4 | 5.92 | 121.25 | -97.21 |
| 12.288 | 16 | 48 | 24 | 2 | 禁用 | 启用 | 5.21 | 115.39 | -105.34 | 5.71 | 121.24 | -97.64 |
| 12.288 | 16 | 48 | 24 | 2 | 启用 | 禁用 | 5.4 | 115.41 | -103.42 | 5.9 | 121.2 | -97.04 |
| 12.288 | 24 | 24 | 24 | 1 | 禁用 | 禁用 | 3.24 | 112.46 | -103.03 | 3.57 | 115.85 | -96.78 |
| 12.288 | 24 | 24 | 24 | 1 | 禁用 | 启用 | 3.11 | 112.52 | -104.62 | 3.43 | 115.85 | -97.54 |
| 12.288 | 24 | 24 | 24 | 1 | 启用 | 禁用 | 3.22 | 112.24 | -103.12 | 3.56 | 115.91 | -96.79 |
| 12.288 | 24 | 48 | 24 | 2 | 禁用 | 禁用 | 5.25 | 114.06 | -103.08 | 5.75 | 119.78 | -96.91 |
| 12.288 | 24 | 48 | 24 | 2 | 禁用 | 启用 | 5.04 | 114.05 | -104.79 | 5.54 | 119.62 | -97.91 |
| 12.288 | 24 | 48 | 24 | 2 | 启用 | 禁用 | 5.23 | 113.95 | -103.09 | 5.73 | 119.89 | -97.07 |
| 12.288 | 32 | 24 | 24 | 1 | 禁用 | 禁用 | 3.42 | 113.74 | -103.5 | 3.75 | 119.61 | -96.96 |
| 12.288 | 32 | 24 | 24 | 1 | 禁用 | 启用 | 3.29 | 113.54 | -104.77 | 3.61 | 119.31 | -97.72 |
| 12.288 | 32 | 24 | 24 | 1 | 启用 | 禁用 | 3.4 | 113.49 | -103.46 | 3.73 | 119.61 | -96.99 |
| 12.288 | 32 | 48 | 24 | 2 | 禁用 | 禁用 | 5.62 | 113.61 | -102.73 | 6.13 | 119.57 | -96.96 |
| 12.288 | 32 | 48 | 24 | 2 | 禁用 | 启用 | 5.41 | 113.51 | -104.11 | 5.92 | 119.24 | -97.62 |
| 12.288 | 32 | 48 | 24 | 2 | 启用 | 禁用 | 5.62 | 113.58 | -102.56 | 6.11 | 119.52 | -96.94 |
| 12.288 | 48 | 24 | 24 | 1 | 禁用 | 禁用 | 2.97 | 109.97 | -102.08 | 3.31 | 111.24 | -96.7 |
| 12.288 | 48 | 24 | 24 | 1 | 禁用 | 启用 | 2.84 | 107.77 | -103.01 | 3.17 | 108.44 | -97.5 |
| 12.288 | 48 | 24 | 24 | 1 | 启用 | 禁用 | 2.96 | 107.6 | -101.25 | 3.3 | 108.2 | -96.44 |
| 12.288 | 48 | 48 | 24 | 2 | 禁用 | 禁用 | 4.65 | 110.01 | -101.46 | 5.16 | 111.2 | -96.67 |
| 12.288 | 48 | 48 | 24 | 2 | 禁用 | 启用 | 4.44 | 107.85 | -102.63 | 4.94 | 108.42 | -97.42 |
| 12.288 | 48 | 48 | 24 | 2 | 启用 | 禁用 | 4.63 | 107.29 | -100.83 | 5.13 | 107.58 | -96.45 |
| 12.288 | 96 | 24 | 24 | 1 | 禁用 | 禁用 | 3.4 | 87.9 | -85.16 | 3.74 | 87.33 | -84.71 |
| 12.288 | 96 | 24 | 24 | 1 | 禁用 | 启用 | 3.27 | 87.76 | -85.12 | 3.6 | 87.36 | -84.63 |
| 12.288 | 96 | 24 | 24 | 1 | 启用 | 禁用 | 3.39 | 86.34 | -83.64 | 3.72 | 85.97 | -83.31 |
| 12.288 | 96 | 48 | 24 | 2 | 禁用 | 禁用 | 5.33 | 88.01 | -85.07 | 5.84 | 87.22 | -84.63 |
| 12.288 | 96 | 48 | 24 | 2 | 禁用 | 启用 | 5.12 | 87.62 | -85.21 | 5.62 | 87.04 | -84.53 |
| 12.288 | 96 | 48 | 24 | 2 | 启用 | 禁用 | 5.3 | 86.45 | -83.63 | 5.81 | 85.69 | -83.29 |
| 12.288 | 192 | 24 | 24 | 1 | 禁用 | 禁用 | 4.88 | 113.08 | -103.22 | 5.22 | 118.09 | -96.67 |
| 12.288 | 192 | 24 | 24 | 1 | 禁用 | 启用 | 4.75 | 113.08 | -104.68 | 5.08 | 117.78 | -97.68 |
| 12.288 | 192 | 24 | 24 | 1 | 启用 | 禁用 | 4.83 | 113.18 | -103.28 | 5.16 | 118.11 | -96.79 |
| 6.144 | 8 | 32 | 32 | 1 | 禁用 | 禁用 | 2.56 | 118.83 | -107.38 | 2.89 | 125.12 | -98.07 |
| 6.144 | 8 | 32 | 32 | 1 | 禁用 | 启用 | 2.56 | 119.14 | -107.44 | 2.88 | 124.75 | -97.99 |
| 6.144 | 8 | 32 | 32 | 1 | 启用 | 禁用 | 2.56 | 118.96 | -107.4 | 2.89 | 124.95 | -98.18 |
| 6.144 | 8 | 48 | 24 | 2 | 禁用 | 禁用 | 4.25 | 118.74 | -107.08 | 4.74 | 124.63 | -98 |
| 6.144 | 8 | 48 | 24 | 2 | 禁用 | 启用 | 4.25 | 118.89 | -106.95 | 4.74 | 124.64 | -98.08 |
| 6.144 | 8 | 48 | 24 | 2 | 启用 | 禁用 | 4.25 | 118.85 | -106.97 | 4.74 | 124.87 | -98.08 |
| 6.144 | 16 | 24 | 24 | 1 | 禁用 | 禁用 | 2.96 | 115.4 | -106.25 | 3.29 | 121.21 | -97.9 |
| 6.144 | 16 | 24 | 24 | 1 | 禁用 | 启用 | 2.96 | 115.42 | -106.27 | 3.29 | 121.21 | -97.97 |
| 6.144 | 16 | 24 | 24 | 1 | 启用 | 禁用 | 2.95 | 115.58 | -106.28 | 3.28 | 121.35 | -98.09 |
| 6.144 | 16 | 48 | 24 | 2 | 禁用 | 禁用 | 5.02 | 115.38 | -105.55 | 5.52 | 121.03 | -97.96 |
| 6.144 | 16 | 48 | 24 | 2 | 禁用 | 启用 | 5.02 | 115.21 | -105.25 | 5.52 | 121.25 | -98.07 |
| 6.144 | 16 | 48 | 24 | 2 | 启用 | 禁用 | 5 | 115.48 | -105.46 | 5.5 | 121.22 | -97.95 |
| 6.144 | 24 | 24 | 24 | 1 | 禁用 | 禁用 | 2.87 | 112.44 | -104.69 | 3.2 | 115.65 | -97.87 |
| 6.144 | 24 | 24 | 24 | 1 | 禁用 | 启用 | 2.87 | 112.29 | -104.69 | 3.2 | 115.64 | -97.9 |
| 6.144 | 24 | 24 | 24 | 1 | 启用 | 禁用 | 2.86 | 112.35 | -104.82 | 3.18 | 115.71 | -97.88 |
| 6.144 | 24 | 48 | 24 | 2 | 禁用 | 禁用 | 4.8 | 114.01 | -104.76 | 5.31 | 119.41 | -98.23 |
| 6.144 | 24 | 48 | 24 | 2 | 禁用 | 启用 | 4.81 | 113.96 | -104.8 | 5.3 | 119.45 | -97.84 |
| 6.144 | 24 | 48 | 24 | 2 | 启用 | 禁用 | 4.78 | 113.99 | -104.85 | 5.28 | 119.35 | -97.98 |
| 6.144 | 32 | 24 | 24 | 1 | 禁用 | 禁用 | 3.1 | 113.55 | -104.95 | 3.43 | 119.23 | -97.89 |
| 6.144 | 32 | 24 | 24 | 1 | 禁用 | 启用 | 3.1 | 113.5 | -104.94 | 3.43 | 119.28 | -98.07 |
| 6.144 | 32 | 24 | 24 | 1 | 启用 | 禁用 | 3.09 | 113.65 | -104.96 | 3.41 | 119.41 | -97.85 |
| 6.144 | 48 | 24 | 24 | 1 | 禁用 | 禁用 | 2.6 | 107.99 | -103.19 | 2.93 | 108.54 | -97.56 |
| 6.144 | 48 | 24 | 24 | 1 | 禁用 | 启用 | 2.61 | 107.86 | -103.1 | 2.93 | 108.52 | -97.68 |
| 6.144 | 48 | 24 | 24 | 1 | 启用 | 禁用 | 2.59 | 105.76 | -102.3 | 2.92 | 106.32 | -97.42 |
| 6.144 | 48 | 48 | 24 | 2 | 禁用 | 禁用 | 4.21 | 107.75 | -102.57 | 4.7 | 108.37 | -97.33 |
| 6.144 | 48 | 48 | 24 | 2 | 禁用 | 启用 | 4.21 | 107.88 | -102.51 | 4.7 | 108.38 | -97.41 |
| 6.144 | 48 | 48 | 24 | 2 | 启用 | 禁用 | 4.19 | 105.84 | -101.67 | 4.68 | 105.86 | -97.43 |
| 6.144 | 96 | 24 | 24 | 1 | 禁用 | 禁用 | 3.03 | 87.94 | -85.12 | 3.37 | 87.4 | -84.63 |
| 6.144 | 96 | 24 | 24 | 1 | 禁用 | 启用 | 3.03 | 87.9 | -85.08 | 3.37 | 87.47 | -84.67 |
| 6.144 | 96 | 24 | 24 | 1 | 启用 | 禁用 | 3.02 | 86.46 | -83.8 | 3.35 | 85.92 | -83.46 |
| 6.144 | 96 | 48 | 24 | 2 | 禁用 | 禁用 | 4.9 | 87.97 | -85.01 | 5.4 | 87.08 | -84.52 |
| 6.144 | 96 | 48 | 24 | 2 | 禁用 | 启用 | 4.9 | 87.98 | -85.13 | 5.4 | 87.12 | -84.68 |
| 6.144 | 96 | 48 | 24 | 2 | 启用 | 禁用 | 4.87 | 86.2 | -83.62 | 5.37 | 85.64 | -83.3 |