ESP32 DAC signal

There is not a sinusoidal sequence.

Too, I slow down the samples generation (1 ms)

I obtain:

2528,2410,2296,2208,2066,1936,1838,1740,1672,1588,1514,1480,1432,1368,1336,1288,1220,1204,1124,1161,1107,1103,1083,1057,1013,1041,993,1009,1025,955,965,961,961,937,931,923,906,882,914,881,907,891,921,899,875,911,875,921,881,919,875,909,885,924,896,864,928,640,858,923,589,647,727,859,999,1069,1007,869,841,815,802,810,812,845,851,885,964,942,930,917,901,889,915,865,907,867,897,866,896,864,888,914,888,910,872,916,888,928,902,879,911,883,913,889,904,878,924,905,877,907,875,905,875,905,879,897,864,904,876,905,865,896,864,884,898,878,874,923,905,889,921,897,865,896,864,882,920,856,905,882,916,883,911,891,922,896,872,905,841,879,1000,938,908,885,919,884,963,623,937,944,738,940,884,840,836,896,938,992,1032,972,936,880,915,897,883,936,920,896,856,875,899,859,875,921,897,865,887,915,883,910,882,910,888,898,884,927,910,882,906,875,905,881,913,897,857,885,918,874,904,769,691,733,762,821,815,790,820,928,938,867,833,853,913,888,898,886,938,824,850,942,937,867,873,978,930,899,872,936,864,851,916,906,858,861,899,889,929,888,950,998,0,930,1059,1195,1121,1116,1104,1037,889,868,900,836,868,993,1002,976,960,949,939,914,906,922,916,802,847,882,897,844,880,911,880,905,897,896,804,796,841,850,840,853,883,910,869,882,954,887,879,971,978,955,931,914,904,878,905,905,901,792,811,851,868,873,897,872,898,856,897,885,853,846,914,890,906,868,898,881,915,877,937,931,825,882,938,906,856,874,896,872,896,885,941,843,876,942,922,883,901,897,872,896,874,931,833,833,897,875,880,864,904,896,872,898,900,888,816,814,982,108,910,908,1136,1145,1137,1116,1056,866,795,825,929,929,881,923,931,915,851,889,875,851,878,1024,971,904,832,878,946,930,911,907,803,793,845,915,851,827,841,882,904,857,917,869,824,883,939,898,840,866,907,883,905,889,941,833,874,938,915,874,904,878,915,881,923,924,832,846,904,878,897,859,899,872,896,875,921,847,962,4,858,960,1156,968,1032,1035,971,930,804,696,782,832,861,884,908,886,904,852,899,837,809,877,936,896,843,856,884,919,883,948,883,867,936,953,931,880,912,896,873,904,908,897,779,837,875,866,861,891,931,907,889,943,867,874,948,936,905,859,861,946,904,899,896,783,747,872,973,921,827,833,884,928,914,820,772,808,920,922,821,775,794,833,861,875,815,770,841,938,16,784,859,1123,1115,1097,1049,860,836,865,883,877,908,939,970,961,938,847,824,906,930,896,833,841,880,910,889,936,824,864,933,922,876,888,932,914,885,946,931,822,880,955,928,879,897,877,920,904,901,833,802,859,901,848,843,856,896,859,887,943,848,865,928,916,872,897,872,911,873,923,917,809,842,897,865,870,878,910,883,908,917,840,822,875,942,913,848,869,905,882,931,929,853,834,904,896,847,842,856,897,865,897,888,854,864,929,909,869,879,922,904,872,928,920,821,793,873,968,904,856,746,920,1032,760,804,811,952,1066,1008,901,763,826,896,896,908,866,804,833,931,897,793,769,802,841,853,866,822,770,825,912,856,809,801,843,874,904,858,789,819,896,873,847,833,856,896,886,865,841,915,910,856,848,874,920,896,896,881,827,857,914,888,896,850,880,906,884,954,888,878,961,961,931,889,930,928,914,914,900,796,835,877,885,899,865,901,867,880,946,914,827,942,288,850,915,1057,1049,988,948,850,727,779,843,913,906,888,914,864,859,931,970,840,910,904,842,840,856,882,906,906,899,780,820,848,861,864,878,917,880,920,931,845,797,859,985,939,841,852,917,919,906,872,793,817,937,937,841,795,812,872,911,879,813,785,864,961,905,803,804,859,888,944,861,803,851,970,960,857,846,904,915,906,875,803,832,906,909,840,813,833,854,914,880,842,817,879,937,883,881,910,907,897,896,873,809,856,913,873,878,896,867,896,872,936,833,849,910,889,901,865,905,881,923,929,855,833,888,949,905,857,886,922,898,899,887,1005,698,867,971,1147,867,923,1025,1068,1033,873,818,832,842,852,898,898,882,904,873,911,794,847,905,865,864,875,905,873,906,912,835,827,881,921,867,874,920,897,857,919,904,770,771,867,920,812,770,787,816,844,857,777,720,856,949,888,840,844,904,903,898,819,730,826,946,917,801,771,808,857,896,835,737,797,906,919,816,761,832,876,933,900,768,762,898,906,841,802,812,847,878,922,825,792,850,888,897,833,851,883,908,909,825,808,873,921,869,877,897,877,911,907,896,776,826,860,873,872,883,917,885,943,941,834,879,945,923,889,923,908,888,940,935,872,925,640,873,922,613,681,738,841,1007,1056,1009,1073,996,946,908,904,889,952,978,974,880,960,963,939,923,915,897,867,913,905,792,842,881,884,873,939,916,875,925,936,824,800,897,955,869,833,849,916,914,883,789,762,919,975,925,815,833,896,908,868,786,756,901,961,904,800,803,852,905,873,783,730,865,971,936,824,832,897,899,874,782,751,890,971,921,848,875,938,940,1001,13,787,954,1144,914,930,1037,1026,961,881,756,815,879,937,920,915,897,864,904,868,804,850,905,858,857,882,907,875,945,883,866,936,929,879,911,896,864,915,923,832,839,882,898,850,877,910,891,942,944,851,900,896,848,870,897,856,873,937,856,859,928,908,861,896,860,885,929,935,867,896,897,856,865,880,909,877,951,954,833,837,947,1001,907,804,836,925,936,815,752,884,1032,890,847,872,968,1001,929,812,907,1007,996,898,835,905,954,932,769,754,947,1004,939,815,835,904,933,851,745,873,1002,1001,928,875,938,969,969,844,876,962,973,1000,192,943,1025,1172,1133,1050,1059,978,882,834,840,881,955,992,952,896,905,865,867,904,899,883,936,932,808,833,880,889,906,898,883,910,922,908,776,832,872,859,865,897,864,896,920,861,812,876,909,847,873,913,874,933,953,849,854,928,898,840,866,896,856,921,937,805,836,904,857,808,841,861,878,946,904,784,803,917,907,763,784,834,912,920,792,689,817,946,977,797,658,762,917,1010,800,628,905,1072,1026,850,675,673,952,964,661,609,995,1083,1028,841,693,781,1000,834,557,713,1096,1080,1026,859,768,917,916,584,541,864,1049,985,964,928,952,987,922,555,628,978,1042,989,988,984,1025,897,605,472,801,1039,962,924,960,1009,1034,874,521,450,838,1039,933,873,974,1056,932,813,495,665,952,1010,904,851,1035,1037,973,739,599,842,1044,942,810,820,1024,986,888,706,808,1024,954,840,736,835,1025,941,722,712,1000,1033,957,843,737,889,1051,837,675,873,1065,1001,900,682,714,1008,942,652,610,1036,1052,1007,937,755,865,1057,779,543,745,1080,962,1000,941,915,1005,913,589,545,888,1098,1058,983,907,1013,1043,777,442,586,978,1052,964,922,989,1033,937,608,436,718,1024,970,880,931,1049,1008,858,602,717,1011,1081,914,828,1002,1098,1000,776,705,1001,1083,938,814,833,1056,992,768,682,954,1008,944,780,715,901,1007,820,656,876,1052,996,921,763,843,1026,879,673,809,985,1033,946,922,898,930,932,604,643,849,942,878,866,942,977,987,864,603,745,1010,1004,984,1027,1007,1077,1066,786,471,686,1004,993,856,874,1039,1115,1025,681,472,786,1012,1024,846,864,1038,1089,937,629,691,975,1069,899,776,808,1033,948,724,588,845,1059,955,785,736,898,1034,879,625,693,1051,1056,910,689,689,907,1010,754,672,914,1043,960,844,770,800,948,896,635,800,938,923,872,906,884,932,964,757,752,951,971,904,889,979,1001,1066,949,683,781,921,881,856,907,947,962,1025,842,617,787,897,835,826,876,923,969,1010,821,657,820,905,815,801,843,878,1026,931,718,723,896,872,817,812,873,925,1025,889,751,873,994,953,856,928,939,985,1050,826,603,905,1033,852,695,842,931,1035,481,498,933,1120,1041,783,696,889,1098,869,604,814,1108,1121,1032,822,769,954,962,739,602,888,1133,1103,979,928,968,1108,971,680,620,963,1129,1057,913,909,997,1077,873,609,746,1064,1068,922,864,968,1071,1059,783,568,804,971,819,809,835,907,1003,1026,706,610,863,967,889,864,920,936,1058,986,761,756,968,1001,943,907,914,922,1032,900,706,800,908,864,818,833,883,922,1001,885,761,922,994,954,860,904,929,961,1037,817,699,867,994,938,835,851,883,974,1058,848,736,913,979,948,874,946,919,883,1045,878,608,691,980,1076,938,822,848,945,1058,932,569,578,888,1098,1028,850,814,868,1081,1049,655,512,797,1025,946,819,777,813,961,975,688,491,795,995,1011,904,844,922,1010,1057,801,529,681,973,1024,851,803,872,1003,1043,858,597,696,968,1024,855,820,888,1000,1091,995,730,759,1025,1025,869,843,913,941,1002,1065,810,652,841,1001,954,834,952,815,955,1025,800,565,623,929,955,832,795,856,915,1013,950,717,650,882,1066,960,794,794,877,1025,1006,755,606,867,1112,1088,907,757,867,1044,1089,866,611,811,1043,1082,930,771,777,900,1002,858,571,719,968,1066,952,889,886,980,1097,964,650,672,971,1054,873,784,842,952,1058,887,604,770,962,1083,961,789,777,859,1056,896,553,716,904,1025,896,707,722,847,1027,866,568,662,886,1057,941,768,738,889,1075,923,585,687,922,1040,924,763,803,896,1024,845,536,672,897,984,901,744,808,937,1013,824,538,746