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AFE4490 Datasheet(PDF) 27 Page - Texas Instruments

No. de pieza AFE4490
Descripción Electrónicos  AFE4404 Ultra-Small, Integrated AFE for Wearable, Optical, Heart-Rate Monitoring and Bio-Sensing
PDF  85 Pages
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Fabricante Electrónico  TI2 [Texas Instruments]
Página de inicio  https://www.ti.com
Logo TI2 - Texas Instruments

AFE4490 Datasheet(HTML) 27 Page - Texas Instruments

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AFE4404
www.ti.com
SBAS689D – JUNE 2015 – REVISED DECEMBER 2016
Product Folder Links: AFE4404
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
(1)
For signal names, see Figure 23.
(2)
Time duration = (end count – start count + 1) / fTE.
(3)
For PRPCT, start count = 0.
Table 11. Sample Register Settings
SIGNAL(1)
REGISTER FIELD
NO DIVISION OF CLOCK TO TIMING
ENGINE CLOCK
(CLKDIV_PRF = 1)
ADC CLOCK TO TIMING ENGINE
CLOCK DIVIDED BY 16
(CLKDIV_PRF = 16)
TIME DURATION
(µs)
REGISTER
SETTING(2)
TIME DURATION
(µs)
REGISTER
SETTING(2)
PRF COUNTER
PRPCT
10000
39999(3)
10000
2499(3)
LED2
LED2LEDSTC
100
0
100
0
LED2LEDENDC
399
24
SLED2
LED2STC
75
100
72
7
LED2ENDC
399
24
ADCRST0
ADCRSTSTCT0
1.75
401
4
26
ADCRSTENDCT0
407
26
CONVLED2
LED2CONVST
265
409
268
28
LED2CONVEND
1468
94
LED3
LED3LEDSTC
100
401
100
26
LED3LEDENDC
800
50
SLED3
ALED2STC\
LED3STC
75
501
72
33
ALED2ENDC\
LED3ENDC
800
50
ADCRST1
ADCRSTSTCT1
1.75
1470
4
96
ADCRSTENDCT1
1476
96
CONVLED3
ALED2CONVST\
LED3CONVST
265
1478
268
98
ALED2CONVEND\
LED3CONVEND
2537
164
LED1
LED1LEDSTC
100
802
100
52
LED1LEDENDC
1201
76
SLED1
LED1STC
75
902
72
59
LED1ENDC
1201
76
ADCRST2
ADCRSTSTCT2
1.75
2539
4
166
ADCRSTENDCT2
2545
166
CONVLED1
LED1CONVST
265
2547
268
168
LED1CONVEND
3606
234
SLED_AMB
ALED1STC
75
1303
72
85
ALED1ENDC
1602
102
ADCRST3
ADCRSTSTCT3
1.75
3608
4
236
ADCRSTENDCT3
3614
236
CONVLED_AMB
ALED1CONVST
265
3616
268
238
ALED1CONVEND
4675
304
PDNCYCLE
PDNCYCLESTC
8431.25
5475
8384
354
PDNCYCLEENDC
39199
2449



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