{"id":102867,"date":"2026-09-09T16:41:21","date_gmt":"2026-09-09T08:41:21","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/102867.html"},"modified":"2026-09-09T16:41:21","modified_gmt":"2026-09-09T08:41:21","slug":"d223-adc%e5%80%bc%e5%88%b0%e5%b7%a5%e7%a8%8b%e9%87%8f%e5%ae%8c%e6%95%b4%e8%bd%ac%e6%8d%a2%e5%85%ac%e5%bc%8f%ef%bc%9a%e4%bb%8e16%e4%bd%8d%e5%88%b024%e4%bd%8d%e7%9a%84%e6%95%b0%e5%ad%a6%e9%93%be","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/102867.html","title":{"rendered":"D223 ADC\u503c\u5230\u5de5\u7a0b\u91cf\u5b8c\u6574\u8f6c\u6362\u516c\u5f0f\uff1a\u4ece16\u4f4d\u523024\u4f4d\u7684\u6570\u5b66\u94fe\u8def"},"content":{"rendered":"

www.z-linear.com<\/p>\n

\u4e00\u4e2aADC\u539f\u59cb\u503c32768\u600e\u4e48\u53d8\u6210"5.000V"？16\u4f4d\u548c24\u4f4d\u600e\u4e48\u6362\u7b97？\u4e24\u70b9\u6821\u51c6\u7684Y=MX+N\u600e\u4e48\u7b97？\u6821\u6b63\u7cfb\u6570\u548c\u96f6\u70b9\u504f\u79fb\u600e\u4e48\u4f5c\u7528？\u672c\u6587\u662fD223 ADC\u503c\u5230\u5de5\u7a0b\u91cf\u7684\u5b8c\u6574\u6570\u5b66\u94fe\u8def\u3002<\/p>\n

\n

\u4e00\u3001\u8f6c\u6362\u94fe\u8def\u5168\u666f<\/h3>\n

AD7606\u539f\u59cb\u6570\u636e(16\u4f4d\u8865\u7801)
\n \u2193 \u2460 \u5927\u7aef\u8f6c\u6362 SWAP16
\n \u2193 \u2461 256\u70b9\u6ed1\u52a8\u5e73\u5747\u6ee4\u6ce2(16\u4f4d\u219224\u4f4d)
\n \u2193 \u2462 \u91cf\u7a0b\u9009\u62e9(\u00b15V\/\u00b110V\u7cfb\u6570)
\n \u2193 \u2463 \u4e24\u70b9\u7ebf\u6027\u6821\u51c6(Y=MX+N)
\n \u2193 \u2464 \u6821\u6b63\u7cfb\u6570\u00d7\u96f6\u70b9\u504f\u79fb
\n \u2193 \u2465 \u5355\u4f4d\u7f29\u653e(\u00d70.00001)
\n \u2193 \u2466 \u663e\u793a+\u5355\u4f4d
\n \u2192 "5.000 V"<\/p>\n

\n

\u4e8c\u3001\u2460 \u5927\u7aef\u8f6c\u6362<\/h3>\n

2.1 SWAP16<\/h4>\n

D223\u901a\u4fe1\u534f\u8bae\u4f7f\u7528\u5927\u7aef\u6a21\u5f0f，C#\u4f7f\u7528\u5c0f\u7aef\u6a21\u5f0f\u3002\u9700\u8981SWAP16\u8f6c\u6362\u5b57\u8282\u5e8f\u3002<\/p>\n

\/\/ \u56fa\u4ef6\u4e2d<\/span>
\nint16 adcData =<\/span> SWAP16<\/span>(<\/span>_qspiAdcBuf.<\/span>data[<\/span>j]<\/span>[<\/span>i]<\/span>)<\/span>;<\/span><\/p>\n

\/\/ C#\u4e0a\u4f4d\u673a<\/span>
\npublic<\/span> static<\/span> UInt16<\/span> SWAP16<\/span>(<\/span>UInt16<\/span> value<\/span>)<\/span> {<\/span>
\n return<\/span> (<\/span>UInt16)<\/span>(<\/span>(<\/span>value<\/span> >><\/span> 8<\/span>)<\/span> |<\/span> (<\/span>value<\/span> <<<\/span> 8<\/span>)<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\u793a\u4f8b：<\/p>\n

\u539f\u59cb\u5b57\u8282: 0x7F 0xFF (\u5927\u7aef)
\n\u76f4\u63a5\u8bfb\u53d6: 0xFF7F (\u5c0f\u7aef, C#) = 65407
\nSWAP16\u540e: 0x7FFF (\u6b63\u786e) = 32767<\/p>\n

\n

\u4e09\u3001\u2461 256\u70b9\u6ed1\u52a8\u5e73\u5747<\/h3>\n

3.1 \u7b97\u6cd5<\/h4>\n

\/\/ 256\u70b9\u6ed1\u52a8\u5e73\u5747<\/span>
\nu32 sumTotal =<\/span> 0<\/span>;<\/span>
\nfor<\/span>(<\/span>u16 j =<\/span> 0<\/span>;<\/span> j <<\/span> 256<\/span>;<\/span> j++<\/span>)<\/span>
\n sumTotal +=<\/span> _uadc.<\/span>getAdc_Buf256[<\/span>i]<\/span>[<\/span>j]<\/span>;<\/span><\/p>\n

_uadc.<\/span>getAdcFilter16[<\/span>i]<\/span> =<\/span> sumTotal \/<\/span> 256<\/span>;<\/span> \/\/ 16\u4f4d\u5747\u503c<\/span>
\n_uadc.<\/span>getAdcFilter24[<\/span>i]<\/span> =<\/span> sumTotal;<\/span> \/\/ 24\u4f4d\u7d2f\u52a0\u548c<\/span><\/p>\n

3.2 \u7cbe\u5ea6\u63d0\u5347\u539f\u7406<\/h4>\n

16\u4f4dADC: \u8303\u56f4 -32768~32767
\n256\u70b9\u7d2f\u52a0: \u8303\u56f4 -32768\u00d7256~32767\u00d7256 = -8388608~8388607
\n = 24\u4f4d\u6709\u7b26\u53f7\u8303\u56f4 (-2^23~2^23-1)<\/p>\n

\u5747\u503c: sumTotal \/ 256 \u2192 \u6062\u590d16\u4f4d\u91cf\u7ea7
\n\u7d2f\u52a0\u548c: sumTotal \u2192 \u4fdd\u630124\u4f4d\u7cbe\u5ea6<\/p>\n

3.3 16\u4f4d vs 24\u4f4d<\/h4>\n\n\u6a21\u5f0f\u53d8\u91cf\u7cbe\u5ea6\u5206\u8fa8\u7387(\u00b15V\u91cf\u7a0b)<\/tr>\n\n\n\n
16\u4f4d<\/td>\ngetAdcFilter16<\/td>\n~16\u4f4d<\/td>\n152.6\u03bcV<\/td>\n<\/tr>\n
24\u4f4d<\/td>\ngetAdcFilter24<\/td>\n~20\u4f4d<\/td>\n~9.5\u03bcV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u56db\u3001\u2462 \u91cf\u7a0b\u8f6c\u6362<\/h3>\n

4.1 \u8f6c\u6362\u7cfb\u6570<\/h4>\n

\u6839\u636e\u91cf\u7a0b\u9009\u62e9\u8f6c\u6362\u7cfb\u6570\u300216\u4f4d\u503c\u8f6c\u6362\u4e3amV，24\u4f4d\u503c\u8f6c\u6362\u4e3a\u03bcV\u3002<\/p>\n

if<\/span>(<\/span>_framDatas.<\/span>_adcParam.<\/span>adcRange &<\/span> 0x01<\/span>)<\/span> {<\/span> \/\/ \u00b110V\u91cf\u7a0b<\/span>
\n \/\/ 16\u4f4d: mV\u503c<\/span>
\n int16 adc16 =<\/span> (<\/span>int16)<\/span>_uadc.<\/span>getAdcFilter16[<\/span>i]<\/span> –<\/span> 32768<\/span>;<\/span>
\n _modbus.<\/span>_inputReg.<\/span>adc_mV_Data16[<\/span>i]<\/span> =<\/span> adc16 \/<\/span> 3.2768<\/span>;<\/span> \/\/ mV<\/span><\/p>\n

\/\/ 24\u4f4d: \u03bcV\u503c<\/span>
\n int32 adc24 =<\/span> (<\/span>int32)<\/span>_uadc.<\/span>getAdcFilter24[<\/span>i]<\/span> –<\/span> 8388608<\/span>;<\/span>
\n _modbus.<\/span>_inputReg.<\/span>adc_uV_Data24[<\/span>i]<\/span> =<\/span> adc24 \/<\/span> 0.08388608<\/span> \/<\/span> 10<\/span>;<\/span> \/\/ \u03bcV<\/span>
\n}<\/span>
\nelse<\/span> {<\/span> \/\/ \u00b15V\u91cf\u7a0b<\/span>
\n \/\/ \u7cfb\u6570\u76f8\u5e94\u8c03\u6574<\/span>
\n}<\/span><\/p>\n

4.2 \u7cfb\u6570\u63a8\u5bfc<\/h4>\n

\u00b110V\u91cf\u7a0b, 16\u4f4d<\/h5>\n

ADC\u8303\u56f4: 0~65535 (\u65e0\u7b26\u53f7) \u6216 -32768~32767 (\u8865\u7801)
\n\u5bf9\u5e94\u7535\u538b: -10V~+10V (20V\u8303\u56f4)<\/p>\n

\u8f6c\u6362:
\n V = (adc_raw – 32768) \/ 32768 \u00d7 10
\n V = (adc_raw – 32768) \/ 3276.8 (V)
\n mV = (adc_raw – 32768) \/ 3.2768 (mV)<\/p>\n

\u7cfb\u6570: 3.2768 = 32768 \/ 10000<\/p>\n

\u00b110V\u91cf\u7a0b, 24\u4f4d<\/h5>\n

ADC\u8303\u56f4: 0~16777215 (\u65e0\u7b26\u53f7) \u6216 -8388608~8388607 (\u8865\u7801)
\n\u5bf9\u5e94\u7535\u538b: -10V~+10V<\/p>\n

\u8f6c\u6362:
\n V = (adc_raw – 8388608) \/ 8388608 \u00d7 10
\n \u03bcV = (adc_raw – 8388608) \/ 8388608 \u00d7 10000000
\n \u03bcV = (adc_raw – 8388608) \/ 0.8388608<\/p>\n

\u7cfb\u6570: 0.8388608 = 8388608 \/ 10000000<\/p>\n

4.3 \u00b15V\u91cf\u7a0b\u7cfb\u6570<\/h4>\n

16\u4f4dmV: (adc16 – 32768) \/ 6.5536 (\u7cfb\u6570 = 32768\/5000)
\n24\u4f4d\u03bcV: (adc24 – 8388608) \/ 1.6777216 (\u7cfb\u6570 = 8388608\/5000000)<\/p>\n

4.4 \u7cfb\u6570\u603b\u8868<\/h4>\n\n\u91cf\u7a0b\u7cbe\u5ea6\u76ee\u6807\u5355\u4f4d\u516c\u5f0f\u7cfb\u6570<\/tr>\n\n\n\n\n\n
\u00b110V<\/td>\n16\u4f4d<\/td>\nmV<\/td>\n(adc-32768)\/3.2768<\/td>\n3.2768<\/td>\n<\/tr>\n
\u00b110V<\/td>\n24\u4f4d<\/td>\n\u03bcV<\/td>\n(adc-8388608)\/0.8388608<\/td>\n0.8388608<\/td>\n<\/tr>\n
\u00b15V<\/td>\n16\u4f4d<\/td>\nmV<\/td>\n(adc-32768)\/6.5536<\/td>\n6.5536<\/td>\n<\/tr>\n
\u00b15V<\/td>\n24\u4f4d<\/td>\n\u03bcV<\/td>\n(adc-8388608)\/1.6777216<\/td>\n1.6777216<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u4e94\u3001\u2463 \u4e24\u70b9\u7ebf\u6027\u6821\u51c6<\/h3>\n

5.1 Y=MX+N<\/h4>\n

\u4e24\u70b9\u6807\u5b9a\u5047\u8bbe\u6574\u4e2a\u91cf\u7a0b\u90fd\u662f\u7ebf\u6027\u7684，\u6570\u5b57\u91cf\u548c\u5b9e\u9645\u6a21\u62df\u91cf\u5173\u7cfb\u4e3aY=MX+N\u3002<\/p>\n

Y = M \u00d7 X + N<\/p>\n

A\u70b9: (d1, a1) \u2192 a1 = M \u00d7 d1 + N
\nB\u70b9: (d2, a2) \u2192 a2 = M \u00d7 d2 + N<\/p>\n

\u6c42\u89e3:
\n M = (a2 – a1) \/ (d2 – d1)
\n N = a1 – M \u00d7 d1<\/p>\n

5.2 \u6821\u51c6\u51fd\u6570<\/h4>\n

\/\/ C#\u4e0a\u4f4d\u673a<\/span>
\ndouble<\/span><\/span> calc_adcCalibData<\/span>(<\/span>double<\/span><\/span> data,<\/span> double<\/span><\/span> d1,<\/span> double<\/span><\/span> a1,<\/span>
\n double<\/span><\/span> d2,<\/span> double<\/span><\/span> a2)<\/span> {<\/span>
\n double<\/span><\/span> result =<\/span> (<\/span>(<\/span>data –<\/span> d1)<\/span> *<\/span> (<\/span>a2 –<\/span> a1)<\/span> \/<\/span> (<\/span>d2 –<\/span> d1)<\/span>)<\/span> +<\/span> a1;<\/span>
\n return<\/span> result;<\/span>
\n}<\/span><\/p>\n

5.3 \u6807\u5b9a\u6d41\u7a0b<\/h4>\n

A\u70b9\u6807\u5b9a(30%\u91cf\u7a0b):
\n \u8f93\u5165: \u5df2\u77e5\u6a21\u62df\u91cf a1 = 2.000V \u2192 \u5b58\u50a81500000(\u00d710^6)
\n \u91c7\u96c6\u5361\u8bfb\u53d6\u5f53\u524dADC\u6570\u5b57\u91cf d1
\n \u2192 \u5b58\u5165FRAM: calibPointA_d1, calibPointA_a1
\n \u2192 calibEnableA = 1<\/p>\n

B\u70b9\u6807\u5b9a(70%\u91cf\u7a0b):
\n \u8f93\u5165: \u5df2\u77e5\u6a21\u62df\u91cf a2 = 7.000V \u2192 \u5b58\u50a87000000
\n \u91c7\u96c6\u5361\u8bfb\u53d6\u5f53\u524dADC\u6570\u5b57\u91cf d2
\n \u2192 \u5b58\u5165FRAM: calibPointB_d2, calibPointB_a2
\n \u2192 calibEnableB = 1<\/p>\n

\u6821\u51c6\u540e:
\n \u5bf9\u4efb\u610fADC\u503cX: Y = (X-d1)\u00d7(a2-a1)\/(d2-d1) + a1<\/p>\n

5.4 \u6a21\u62df\u91cf\u5b58\u50a8\u7cbe\u5ea6<\/h4>\n

2.000V \u2192 \u5b58\u50a81500000
\n25.00\u2103 \u2192 \u5b58\u50a825000000
\n101.325kPa \u2192 \u5b58\u50a810132500<\/p>\n

\u8bfb\u53d6: result \u00d7 0.00001
\n 1500000 \u00d7 0.00001 = 15.0 \u2192 \u8fd9\u662f\u00d710^7\u5b58\u50a8\u8fd8\u662f\u00d710^6?<\/p>\n

\u6a21\u62df\u91cf\u4ee5\u00d7100000\u7684\u6574\u6570\u5b58\u50a8，\u4fdd\u8bc16\u4f4d\u5c0f\u6570\u7cbe\u5ea6\u3002<\/p>\n

\n

\u516d\u3001\u2464 \u6821\u6b63\u7cfb\u6570\u4e0e\u96f6\u70b9\u504f\u79fb<\/h3>\n

6.1 \u6821\u6b63\u516c\u5f0f<\/h4>\n

final_value = calib_value \u00d7 correctFactor + calibZero<\/p>\n

calib_value = \u4e24\u70b9\u6821\u51c6\u7ed3\u679c
\ncorrectFactor = \u6821\u6b63\u7cfb\u6570(\u589e\u76ca\u5fae\u8c03)
\ncalibZero = \u96f6\u70b9\u504f\u79fb(\u76f4\u6d41\u504f\u79fb\u5fae\u8c03)<\/p>\n

6.2 \u6821\u6b63\u7cfb\u6570\u7684\u4f5c\u7528<\/h4>\n\n\u53c2\u6570\u4f5c\u7528\u5178\u578b\u503c\u8c03\u8282\u8303\u56f4<\/tr>\n\n\n\n
correctFactor<\/td>\n\u589e\u76ca\u5fae\u8c03<\/td>\n1.000000<\/td>\n0.9~1.1<\/td>\n<\/tr>\n
calibZero<\/td>\n\u96f6\u70b9\u5fae\u8c03<\/td>\n0.000000<\/td>\n\u00b11V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

6.3 \u5e94\u7528\u573a\u666f<\/h4>\n

\u4e24\u70b9\u6821\u51c6\u6d88\u9664: \u521d\u59cb\u7cbe\u5ea6\u8bef\u5dee(\u00b15mV) + \u5927\u8303\u56f4\u589e\u76ca\u8bef\u5dee
\n\u6821\u6b63\u7cfb\u6570\u5fae\u8c03: \u6e29\u5ea6\u6f02\u79fb + \u957f\u671f\u6f02\u79fb\u7684\u5c0f\u91cf\u8865\u507f<\/p>\n

\u793a\u4f8b:
\n ADC\u6821\u51c6\u503c = 5.000V
\n \u5b9e\u9645\u504f\u59270.1% \u2192 correctFactor = 0.999
\n final = 5.000 \u00d7 0.999 = 4.995V<\/p>\n

ADC\u96f6\u70b9\u504f\u79fb0.01V \u2192 calibZero = -0.01
\n final = 5.000 \u00d7 1.0 + (-0.01) = 4.990V<\/p>\n

\n

\u4e03\u3001\u2465 \u5355\u4f4d\u7f29\u653e<\/h3>\n

7.1 \u00d70.00001<\/h4>\n

\u6a21\u62df\u91cf\u4ee5\u00d7100000\u7684\u6574\u6570\u5b58\u50a8，\u663e\u793a\u65f6\u4e58\u4ee50.00001\u6062\u590d\u3002<\/p>\n

double<\/span> actualValue =<\/span> storedValue *<\/span> 0.00001<\/span>;<\/span><\/p>\n

\/\/ \u793a\u4f8b<\/span>
\nstoredValue =<\/span> 5000000<\/span> \u2192 5000000<\/span> \u00d7 0.00001<\/span> =<\/span> 50.0<\/span>
\nstoredValue =<\/span> 25000000<\/span> \u2192 25000000<\/span> \u00d7 0.00001<\/span> =<\/span> 250.0<\/span><\/p>\n

7.2 \u00d710^7 vs \u00d710^6<\/h4>\n

\u6839\u636e\u4ee3\u7801\u5206\u6790，\u90e8\u5206\u503c\u4f7f\u7528\u00d710^7\u5b58\u50a8：<\/p>\n

\/\/ \u6821\u51c6\u540e\u503c<\/span>
\n_modbus.<\/span>_inputReg.<\/span>adc_calibData[<\/span>i]<\/span> =<\/span>
\n getCalibAdcDatas<\/span>(<\/span>3<\/span>,<\/span> i,<\/span> _uadc.<\/span>getAdcFilter24[<\/span>i]<\/span>)<\/span> *<\/span> 100000<\/span>;<\/span><\/p>\n

\/\/ \u663e\u793a\u65f6<\/span>
\ndouble<\/span> displayValue =<\/span> _modbus.<\/span>_inputReg.<\/span>adc_calibData[<\/span>i]<\/span> *<\/span> 0.00001<\/span>;<\/span><\/p>\n

\u00d7100000（105）\u5b58\u50a8\u548c\u00d70.00001（10<\/sup>-5）\u8fd8\u539f，\u51c0\u6548\u679c\u662f\u539f\u503c\u3002\u5b58\u50a8\u4e3a\u6574\u6570\u907f\u514d\u6d6e\u70b9\u8bef\u5dee\u3002<\/p>\n

\n

\u516b\u3001\u2466 \u7535\u6d41\u578b\u8f6c\u6362<\/h3>\n

8.1 \u7535\u6d41\u578b\u516c\u5f0f<\/h4>\n

\/\/ \u7535\u6d41\u578b(240\u03a9\u53d6\u6837\u7535\u963b)<\/span>
\n\/\/ \u7535\u538b\u2192\u7535\u6d41: I = V \/ R<\/span><\/p>\n

if<\/span>(<\/span>signalType ==<\/span> 0<\/span>)<\/span> {<\/span> \/\/ \u7535\u538b\u578b<\/span>
\n \/\/ \u76f4\u63a5\u663e\u793a\u7535\u538b<\/span>
\n}<\/span> else<\/span> {<\/span> \/\/ \u7535\u6d41\u578b<\/span>
\n _modbus.<\/span>_inputReg.<\/span>adc_uA_Data16[<\/span>i]<\/span> =<\/span>
\n adc16 \/<\/span> 3.2768<\/span> \/<\/span> 240<\/span> *<\/span> 1000<\/span>;<\/span> \/\/ \u03bcA<\/span><\/p>\n

\/\/ V = adc16 \/ 3.2768 (mV, \u00b110V\u91cf\u7a0b)<\/span>
\n \/\/ I = V \/ 240\u03a9 \u00d7 1000 (\u03bcA)<\/span>
\n}<\/span><\/p>\n

8.2 \u7535\u6d41\u578b\u7cfb\u6570<\/h4>\n

\u7535\u538b\u2192\u7535\u6d41: I(A) = V(V) \/ 240(\u03a9)
\n\u7535\u538b\u2192\u7535\u6d41: I(mA) = V(mV) \/ 240
\n\u7535\u538b\u2192\u7535\u6d41: I(\u03bcA) = V(mV) \/ 240 \u00d7 1000 = V(mV) \u00d7 4.1667<\/p>\n

\n

\u4e5d\u3001\u5b8c\u6574\u8ba1\u7b97\u793a\u4f8b<\/h3>\n

9.1 \u793a\u4f8b1：\u7535\u538b\u6d4b\u91cf<\/h4>\n

\u6761\u4ef6: \u00b15V\u91cf\u7a0b, \u7535\u538b\u578b, 16\u4f4d\u6a21\u5f0f
\nAD7606\u539f\u59cb\u503c: 32768 (0V)<\/p>\n

Step \u2460 SWAP16: 32768 \u2192 32768 (0x8000\u4e0d\u53d8)
\nStep \u2461 256\u70b9\u5e73\u5747: sumTotal\/256 = 32768 (getAdcFilter16)
\nStep \u2462 \u91cf\u7a0b\u8f6c\u6362(\u00b15V, mV):
\n adc16 = 32768 – 32768 = 0
\n mV = 0 \/ 6.5536 = 0 mV \u2192 0.000V
\nStep \u2463 \u4e24\u70b9\u6821\u51c6(\u5047\u8bbeA: d1=0, a1=0; B: d2=32768, a2=5000000):
\n Y = (32768-0)\u00d7(5000000-0)\/(32768-0) + 0 = 5000000
\nStep \u2464 \u6821\u6b63(\u7cfb\u6570=1.0, \u504f\u79fb=0):
\n final = 5000000 \u00d7 1.0 + 0 = 5000000
\nStep \u2465 \u5355\u4f4d\u7f29\u653e:
\n display = 5000000 \u00d7 0.00001 = 50.0<\/p>\n

\u2192 \u4f46\u8fd9\u4e0d\u5bf9! 0V\u5e94\u8be5\u663e\u793a0V<\/p>\n

\u5b9e\u9645: ADC=32768\u5bf9\u5e940V(\u00b15V\u91cf\u7a0b)
\n adc16 = 32768 – 32768 = 0 \u2192 0V
\n \u6821\u51c6: Y = (0-d1)\u00d7(a2-a1)\/(d2-d1)+a1
\n \u5982\u679cA\u70b9: d1=-32768(\u5bf9\u5e94-5V), a1=-5000000
\n B\u70b9: d2=32767(\u5bf9\u5e94+5V), a2=5000000
\n \u5219Y = (0-(-32768))\u00d7(5000000-(-5000000))\/(32767-(-32768))+(-5000000)
\n = 32768 \u00d7 10000000 \/ 65535 – 5000000
\n \u2248 0<\/p>\n

\u2192 \u663e\u793a0.000V \u2713<\/p>\n

9.2 \u793a\u4f8b2：24\u4f4d\u7cbe\u5bc6\u6d4b\u91cf<\/h4>\n

\u6761\u4ef6: \u00b15V\u91cf\u7a0b, \u7535\u538b\u578b, 24\u4f4d\u6a21\u5f0f
\n256\u70b9\u7d2f\u52a0\u548c: 8388608 (0V\u4e2d\u70b9)<\/p>\n

Step \u2462 \u91cf\u7a0b\u8f6c\u6362(\u00b15V, \u03bcV):
\n adc24 = 8388608 – 8388608 = 0
\n \u03bcV = 0 \/ 1.6777216 = 0 \u03bcV \u2192 0.000000V<\/p>\n

9.3 \u793a\u4f8b3：\u7535\u6d41\u6d4b\u91cf<\/h4>\n

\u6761\u4ef6: \u00b15V\u91cf\u7a0b, \u7535\u6d41\u578b(240\u03a9), 16\u4f4d
\nADC\u539f\u59cb\u503c: 32768 \u2192 0V<\/p>\n

\u7535\u6d41: I = 0V \/ 240\u03a9 = 0mA \u2713<\/p>\n

ADC\u539f\u59cb\u503c: 49152 \u2192 +2.5V (\u534a\u91cf\u7a0b)
\n\u7535\u6d41: I = 2500mV \/ 240 \u00d7 1000 = 10417\u03bcA \u2248 10.42mA<\/p>\n

\n

\u5341\u3001\u516c\u5f0f\u6c47\u603b\u8868<\/h3>\n\n\u8f6c\u6362\u6b65\u9aa4\u516c\u5f0f\u793a\u4f8b(\u00b15V)<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5927\u7aef\u8f6c\u6362<\/td>\nSWAP16(raw)<\/td>\n0x0080\u21920x8000<\/td>\n<\/tr>\n
256\u70b9\u5e73\u5747<\/td>\nsum\/256 (16\u4f4d)<\/td>\n32768<\/td>\n<\/tr>\n
256\u70b9\u7d2f\u52a0<\/td>\nsum (24\u4f4d)<\/td>\n8388608<\/td>\n<\/tr>\n
16\u4f4d\u2192mV(\u00b15V)<\/td>\n(adc-32768)\/6.5536<\/td>\n0\u21920mV<\/td>\n<\/tr>\n
16\u4f4d\u2192mV(\u00b110V)<\/td>\n(adc-32768)\/3.2768<\/td>\n0\u21920mV<\/td>\n<\/tr>\n
24\u4f4d\u2192\u03bcV(\u00b15V)<\/td>\n(adc-8388608)\/1.6777216<\/td>\n0\u21920\u03bcV<\/td>\n<\/tr>\n
24\u4f4d\u2192\u03bcV(\u00b110V)<\/td>\n(adc-8388608)\/0.8388608<\/td>\n0\u21920\u03bcV<\/td>\n<\/tr>\n
\u4e24\u70b9\u6821\u51c6<\/td>\n(X-d1)\u00d7(a2-a1)\/(d2-d1)+a1<\/td>\n\u7ebf\u6027\u63d2\u503c<\/td>\n<\/tr>\n
\u6821\u6b63\u7cfb\u6570<\/td>\nY\u00d7factor+zero<\/td>\n\u5fae\u8c03<\/td>\n<\/tr>\n
\u5355\u4f4d\u7f29\u653e<\/td>\nvalue\u00d70.00001<\/td>\n\u6574\u6570\u2192\u6d6e\u70b9<\/td>\n<\/tr>\n
\u7535\u6d41\u8f6c\u6362<\/td>\nV\/240\u00d71000 (\u03bcA)<\/td>\nV\u2192I<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u5341\u4e00\u3001\u603b\u7ed3<\/h3>\n

D223\u7684ADC\u503c\u5230\u5de5\u7a0b\u91cf\u8f6c\u6362\u5b9e\u73b0\u4e86：<\/p>\n\n\u6b65\u9aa4\u64cd\u4f5c\u7cbe\u5ea6\u5f71\u54cd<\/tr>\n\n\n\n\n\n\n\n\n
\u2460 SWAP16<\/td>\n\u5927\u7aef\u2192\u5c0f\u7aef<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u2461 256\u70b9\u5e73\u5747<\/td>\n16\u4f4d\u219224\u4f4d<\/td>\n+4\u4f4dENOB<\/td>\n<\/tr>\n
\u2462 \u91cf\u7a0b\u8f6c\u6362<\/td>\nmV\/\u03bcV\u7cfb\u6570<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u2463 \u4e24\u70b9\u6821\u51c6<\/td>\nY=MX+N<\/td>\n\u6d88\u9664\u521d\u59cb\u8bef\u5dee<\/td>\n<\/tr>\n
\u2464 \u6821\u6b63\u7cfb\u6570<\/td>\n\u00d7factor+zero<\/td>\n\u5fae\u8c03\u8865\u507f<\/td>\n<\/tr>\n
\u2465 \u5355\u4f4d\u7f29\u653e<\/td>\n\u00d70.00001<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u2466 \u663e\u793a+\u5355\u4f4d<\/td>\n\u201c5.000V\u201d<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4eceAD7606\u768416\u4f4d\u8865\u7801\u5230\u6700\u7ec8\u663e\u793a\u7684"5.000V"，\u7ecf\u8fc77\u6b65\u6570\u5b66\u8f6c\u6362\u3002256\u70b9\u5e73\u5747\u63d0\u53474\u4f4d\u7cbe\u5ea6\u523020\u4f4d，\u4e24\u70b9\u6821\u51c6\u6d88\u9664\u521d\u59cb\u8bef\u5dee，\u6821\u6b63\u7cfb\u6570\u8865\u507f\u6e29\u6f02\u2014\u2014\u6bcf\u4e00\u6b65\u90fd\u6709\u660e\u786e\u7684\u6570\u5b66\u516c\u5f0f\u548c\u7269\u7406\u610f\u4e49\u3002<\/p>\n

\n

\u4e0b\u7bc7\u9884\u544a：\u300aD223\u5b9a\u65f6\u5668\u7cfb\u7edf\u5206\u914d\u5168\u8868\u300b<\/p>\n","protected":false},"excerpt":{"rendered":"

www.z-linear.com\u4e00\u4e2aADC\u539f\u59cb\u503c32768\u600e\u4e48\u53d8\u6210\\”5.000V\\”？16\u4f4d\u548c24\u4f4d\u600e\u4e48\u6362\u7b97？\u4e24\u70b9\u6821\u51c6\u7684YMXN\u600e\u4e48\u7b97？\u6821\u6b63\u7cfb\u6570\u548c\u96f6\u70b9\u504f\u79fb\u600e\u4e48\u4f5c\u7528？\u672c\u6587\u662fD223 ADC\u503c\u5230\u5de5\u7a0b\u91cf\u7684\u5b8c\u6574\u6570\u5b66\u94fe\u8def\u3002\u4e00\u3001\u8f6c\u6362\u94fe\u8def\u5168\u666f
\nAD7606\u539f\u59cb\u6570\u636e(16\u4f4d\u8865\u7801)\u2193 \u2460 \u5927\u7aef\u8f6c\u6362 SWAP16\u2193 \u2461 256\u70b9\u6ed1\u52a8\u5e73\u5747\u6ee4\u6ce2(16\u4f4d\u219224\u4f4d)\u2193 \u2462 \u91cf\u7a0b\u9009\u62e9(\u00b15V\/\u00b110V\u7cfb\u6570)\u2193 \u2463 \u4e24\u70b9\u7ebf\u6027\u6821\u51c6(YMXN)\u2193 \u2464 \u6821\u6b63\u7cfb<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,941,217,270,227],"topic":[],"class_list":["post-102867","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-fpga","tag-stm32","tag-270","tag-227"],"yoast_head":"\nD223 ADC\u503c\u5230\u5de5\u7a0b\u91cf\u5b8c\u6574\u8f6c\u6362\u516c\u5f0f\uff1a\u4ece16\u4f4d\u523024\u4f4d\u7684\u6570\u5b66\u94fe\u8def - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/102867.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D223 ADC\u503c\u5230\u5de5\u7a0b\u91cf\u5b8c\u6574\u8f6c\u6362\u516c\u5f0f\uff1a\u4ece16\u4f4d\u523024\u4f4d\u7684\u6570\u5b66\u94fe\u8def - 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