Hello Ahmed, Our design engineer informed that typically the currents for (I DRVDD + I AVDD ) and (I DVDD ) at AVDD = DRVDD = 3.3 V, and DVDD = 1.8 V, at 75C/85C should be within 4% of these current consumptions at 25C . Please let me know if you have any questions. Thanks, Krunal
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Forum Post: RE: TLV320AIC3104-Q1: Current Values at 75 and 85 degree Celsius
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Forum Post: RE: ADS131A04: Why does F_FRAME fault appear after enabling ADC channels?
I'm sorry, but I do not understand. In my case, CRC is disabled. I've tried writing and reading with 5 or 6 bytes, by I still get frame fault. What am I misunderstanding?
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Forum Post: RE: ADS1247: Measuring 6 PT100 using a single ADS1247
Noam, I'm sure that the AD multiplexer is a fine part. However, the point is to remove the error contribution from the multiplexer, not reduce the error. Going with your current topology, if you have 2.2Ω of multiplexer resistance mismatch, that is the equivalent of about 5.7°C of error in your temperature measurement. Even if you were to use the AD mux, where the typical mismatch is 0.2Ω at 25°C. you are still over 0.5°C of error. That would just be the typical error. If you added the maximum resistance mismatch, and added the temperature drift, then you would be much larger error. By using a second multiplexer, you could remove the resistance mismatch error reacting with the IDAC current. There may be some error because of the mismatch reacting with the input bias current, but it would be significantly smaller. Joseph Wu
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Forum Post: RE: PUREPATH-CMBEVM: PurePath Console Motherboard with external I2S
I figured out how to set up the AIC3262 and everything is working perfectly now. The trick was to open up the PurePath Console software without the board connected, select the target manually, switch on logging and then connect the target via USB. The log contains the commands used to set up the motherboard correctly. The code is below. w 30 00 00 w 30 7f 00 w 30 01 01 w 30 04 33 w 30 05 00 91 08 w 30 0d 00 w 30 0e 80 w 30 12 02 w 30 13 88 80 w 30 0b 02 w 30 08 00 w 30 09 00 w 30 0c 88 w 30 7f 78 w 30 32 88 w 30 7f 64 w 30 32 a4 w 30 7f 00 w 30 3c 80 w 30 3d 00 w 30 53 00 w 30 54 00 w 30 00 01 w 30 01 00 w 30 03 00 w 30 04 00 w 30 1f 80 w 30 20 00 28 33 10 w 30 34 40 w 30 36 40 w 30 37 40 w 30 39 40 w 30 79 33 w 30 7a 01 w 30 00 00 w 30 7f 78 w 30 18 80 w 30 00 00 w 30 7f 28 w 30 00 01 w 30 08 ff w 30 09 ff ff 00 80 00 00 00 7f ff ff 00 40 00 00 00 00 00 00 00 w 30 00 09 w 30 48 ff w 30 49 ff ff 00 80 00 00 00 7f ff ff 00 40 00 00 00 00 00 00 00 w 30 00 00 w 30 7f 14 w 30 00 01 w 30 08 c0 w 30 09 00 00 00 w 30 00 00 w 30 7f 64 w 30 00 01 w 30 08 08 w 30 09 00 00 05 08 00 20 07 5c 60 00 01 5c 60 00 03 00 00 00 00 00 00 00 00 10 00 40 04 10 00 40 06 00 w 30 29 00 00 00 00 00 00 00 00 00 00 00 01 04 a0 d8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05 w 30 49 00 00 00 05 00 20 02 00 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 w 30 00 00 w 30 7f 50 w 30 00 01 w 30 08 00 w 30 09 00 00 00 14 3d 13 00 7f ff ff 00 7f ff ff 00 ff ff ff 00 80 00 00 00 7f f7 00 00 80 09 00 00 40 w 30 29 00 00 00 7f ff ff 00 7f ef 00 00 00 00 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 c0 w 30 49 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 69 00 00 00 00 0d 00 00 00 1c 00 00 00 3e 00 00 00 78 00 00 02 4c 00 00 w 30 00 02 w 30 08 00 w 30 09 d5 00 00 01 65 00 00 03 e9 00 00 07 ca 00 00 ff ef 00 00 fe eb 00 00 ff a8 00 00 fd 08 00 00 ff w 30 29 5e 00 00 ff d5 00 00 fe 36 00 00 fa ac 00 00 f2 a3 00 00 28 ab 00 00 3f ff 00 00 ff 98 00 00 f6 w 30 49 f9 00 00 26 fb 00 00 02 72 00 00 40 02 00 00 fb cb 00 00 20 a7 00 00 ff 6a 00 00 3a 0f 00 00 w 30 00 09 w 30 48 00 w 30 49 00 00 00 14 3d 13 00 7f ff ff 00 7f ff ff 00 ff ff ff 00 80 00 00 00 7f f7 00 00 80 09 00 00 40 w 30 69 00 00 00 7f ff ff 00 7f ef 00 00 00 00 01 00 00 00 01 00 00 00 00 00 w 30 00 0a w 30 08 00 w 30 09 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 29 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 1c 00 00 00 3e 00 00 00 78 00 00 02 4c 00 00 00 w 30 49 d5 00 00 01 65 00 00 03 e9 00 00 07 ca 00 00 ff ef 00 00 fe eb 00 00 ff a8 00 00 fd 08 00 00 ff w 30 69 5e 00 00 ff d5 00 00 fe 36 00 00 fa ac 00 00 f2 a3 00 00 28 ab 00 00 w 30 00 0b w 30 08 3f w 30 09 ff 00 00 ff 98 00 00 f6 f9 00 00 26 fb 00 00 02 72 00 00 40 02 00 00 fb cb 00 00 20 a7 00 00 ff w 30 29 6a 00 00 3a 0f 00 00 w 30 00 00 w 30 7f 3c w 30 00 01 w 30 08 c0 w 30 09 00 00 00 c0 00 00 00 w 30 00 00 w 30 7f 78 w 30 00 01 w 30 08 04 w 30 09 00 00 00 04 00 20 01 04 03 00 04 04 03 20 05 58 60 08 01 60 60 00 00 58 60 00 0d 00 00 00 00 44 w 30 29 00 c0 16 08 00 00 62 08 00 20 a2 08 00 00 61 08 00 20 a1 08 00 00 60 08 00 20 a0 08 00 00 5f 08 w 30 49 00 20 9f 08 00 00 5e 08 00 20 9e 08 00 00 5d 08 00 20 9d 08 00 00 5c 08 00 20 9c 08 00 00 5b 08 w 30 69 00 20 9b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 00 02 w 30 08 44 w 30 09 00 00 06 21 00 20 00 4b 00 c0 00 4b 00 e0 00 00 00 40 48 0c 00 00 00 0c 00 20 00 60 64 c0 00 48 w 30 29 01 a0 00 45 02 20 04 00 00 00 00 10 00 00 00 10 00 00 01 44 00 00 04 00 00 00 00 00 00 00 00 00 w 30 49 00 00 00 00 00 00 00 18 00 60 00 00 00 00 00 00 00 00 00 00 00 00 00 10 00 00 02 18 00 60 01 00 w 30 69 00 00 00 00 00 00 00 00 00 00 00 10 00 00 03 60 64 c0 00 48 02 c0 00 w 30 00 03 w 30 08 45 w 30 09 03 40 04 00 00 00 00 10 00 00 04 10 00 00 05 44 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 29 00 00 00 18 00 40 04 00 00 00 00 00 00 00 00 00 00 00 00 10 00 00 06 18 00 40 05 00 00 00 00 00 w 30 49 00 00 00 00 00 00 00 10 00 00 07 58 60 00 01 40 02 00 11 1c 02 00 0f 00 00 00 00 10 00 20 10 44 w 30 69 00 40 07 10 12 e0 0d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 00 04 w 30 08 00 w 30 09 00 00 00 44 00 00 24 18 01 00 0d 59 00 00 0d 00 00 00 00 00 00 00 00 00 00 00 00 44 00 c0 0f 44 w 30 29 00 40 1d 1c 01 00 0f 40 02 00 10 00 00 00 00 00 00 00 00 10 00 20 0e 44 00 80 1d 58 60 00 0d 18 w 30 49 01 00 10 00 00 00 00 00 00 00 00 10 00 00 0c 10 00 20 0e 20 01 c0 02 44 00 00 1d 00 00 00 00 1c w 30 69 01 00 0f 40 02 00 10 00 00 00 00 00 00 00 00 10 00 20 0e 44 00 60 0e w 30 00 05 w 30 08 58 w 30 09 60 00 0d 18 01 00 10 00 00 00 00 00 00 00 00 10 00 00 0c 10 00 20 0e 20 01 c0 02 44 00 00 0e 00 w 30 29 00 00 00 18 01 00 0f 00 00 00 00 00 00 00 00 00 00 00 00 10 00 20 0e 20 01 c0 02 00 00 00 00 00 w 30 49 00 00 00 18 01 00 0d 00 00 00 00 00 00 00 00 00 00 00 00 10 00 20 0c 18 01 00 02 18 01 00 13 00 w 30 69 00 00 00 00 00 00 00 10 00 20 12 20 02 20 00 18 02 20 12 59 00 00 0d w 30 00 06 w 30 08 00 w 30 09 00 00 00 00 00 00 00 00 00 00 00 44 00 c0 08 44 00 40 08 18 02 40 12 58 60 00 12 00 00 00 00 00 w 30 29 00 00 00 10 00 20 08 20 01 e0 9f 44 00 00 08 00 00 00 00 18 01 c0 12 58 60 00 0e 00 00 00 00 00 w 30 49 00 00 00 10 00 20 08 20 01 e0 9f 20 02 40 02 00 00 00 00 18 01 00 03 18 01 00 15 00 00 00 00 00 w 30 69 00 00 00 10 00 20 14 20 02 60 00 18 02 60 14 59 00 00 0d 00 00 00 00 w 30 00 07 w 30 08 00 w 30 09 00 00 00 00 00 00 00 44 00 c0 08 44 00 40 08 18 02 80 14 58 60 00 14 00 00 00 00 00 00 00 00 10 w 30 29 00 20 09 20 01 e0 9f 44 00 00 08 00 00 00 00 18 01 c0 14 58 60 00 0e 00 00 00 00 00 00 00 00 10 w 30 49 00 20 09 20 01 e0 9f 20 02 80 02 00 00 00 00 18 01 00 06 18 01 00 17 00 00 00 00 00 00 00 00 10 w 30 69 00 20 16 20 02 a0 00 18 02 a0 16 59 00 00 0d 00 00 00 00 00 00 00 00 w 30 00 08 w 30 08 00 w 30 09 00 00 00 44 00 c0 08 44 00 40 08 18 02 c0 16 58 60 00 16 00 00 00 00 00 00 00 00 10 00 20 0a 20 w 30 29 01 e0 9f 44 00 00 08 00 00 00 00 18 01 c0 16 58 60 00 0e 00 00 00 00 00 00 00 00 10 00 20 0a 20 w 30 49 01 e0 9f 20 02 c0 02 00 00 00 00 18 01 00 07 18 01 00 19 00 00 00 00 00 00 00 00 10 00 20 18 20 w 30 69 02 e0 00 18 02 e0 18 59 00 00 0d 00 00 00 00 00 00 00 00 00 00 00 00 w 30 00 09 w 30 08 44 w 30 09 00 c0 08 44 00 40 08 18 03 00 18 58 60 00 18 00 00 00 00 00 00 00 00 10 00 20 0b 20 01 e0 9f 44 w 30 29 00 00 08 00 00 00 00 18 01 c0 18 58 60 00 0e 00 00 00 00 00 00 00 00 10 00 20 0b 20 01 e0 9f 20 w 30 49 03 00 02 00 00 00 00 58 60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10 00 00 1e 58 60 00 04 59 w 30 69 00 00 0b 58 70 00 04 59 00 00 0b 58 70 00 04 44 00 40 08 59 00 00 0b w 30 00 0a w 30 08 00 w 30 09 00 00 00 44 00 40 0d 58 70 00 04 44 00 40 10 58 60 00 0d 00 00 00 00 44 00 00 10 00 00 00 00 00 w 30 29 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18 01 00 08 18 01 00 09 44 00 00 08 00 00 00 00 00 w 30 49 00 00 00 18 01 00 0a 18 01 00 0b 44 00 00 03 18 01 00 1e 18 01 00 1e 44 00 00 00 00 00 00 00 10 w 30 69 00 20 1f 10 00 20 20 58 60 00 04 59 00 00 0c 58 70 00 04 59 00 00 0c w 30 00 0b w 30 08 58 w 30 09 70 00 04 44 00 40 08 59 00 00 0c 00 00 00 00 44 00 40 0d 58 70 00 04 44 00 40 10 58 60 00 0d 00 w 30 29 00 00 00 44 00 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18 01 00 08 18 w 30 49 01 00 09 44 00 00 08 00 00 00 00 00 00 00 00 18 01 00 0a 18 01 00 0b 44 00 00 03 18 01 00 1e 18 w 30 69 01 00 1e 44 00 00 00 00 00 00 00 10 00 20 21 10 00 20 22 18 01 00 21 w 30 00 0c w 30 08 18 w 30 09 01 00 22 18 00 e0 26 1c 01 40 28 10 00 20 25 10 00 20 63 1c 00 c0 25 18 00 e0 64 1c 01 40 68 1c w 30 29 00 c0 63 10 30 00 27 00 00 00 00 00 00 00 00 10 30 00 67 18 03 20 4c 1c 03 40 29 1c 03 20 27 1c w 30 49 03 40 4a 1c 03 60 2b 1c 03 60 48 1c 03 80 2d 1c 03 80 46 1c 03 a0 33 1c 03 a0 40 1c 03 c0 2f 1c w 30 69 03 c0 44 1c 03 e0 31 1c 03 e0 42 1c 04 00 35 1c 04 00 3e 1c 04 20 37 w 30 00 0d w 30 08 1c w 30 09 04 20 3c 1c 04 40 28 1c 04 40 4b 1c 04 60 30 1c 04 60 43 1c 04 80 2c 1c 04 80 47 1c 04 a0 34 1c w 30 29 04 a0 3f 1c 04 c0 2e 1c 04 c0 45 1c 04 e0 2a 1c 04 e0 49 1c 05 00 32 1c 05 00 41 1c 05 20 36 1c w 30 49 05 20 3d 1c 05 40 38 1c 05 40 3b 1c 05 60 39 1c 05 60 3a 00 00 00 00 00 00 00 00 00 00 00 00 10 w 30 69 00 00 51 18 03 20 8c 1c 03 40 69 1c 03 20 67 1c 03 40 8a 1c 03 60 6b w 30 00 0e w 30 08 1c w 30 09 03 60 88 1c 03 80 6d 1c 03 80 86 1c 03 a0 73 1c 03 a0 80 1c 03 c0 6f 1c 03 c0 84 1c 03 e0 71 1c w 30 29 03 e0 82 1c 04 00 75 1c 04 00 7e 1c 04 20 77 1c 04 20 7c 1c 04 40 68 1c 04 40 8b 1c 04 60 70 1c w 30 49 04 60 83 1c 04 80 6c 1c 04 80 87 1c 04 a0 74 1c 04 a0 7f 1c 04 c0 6e 1c 04 c0 85 1c 04 e0 6a 1c w 30 69 04 e0 89 1c 05 00 72 1c 05 00 81 1c 05 20 76 1c 05 20 7d 1c 05 40 78 w 30 00 0f w 30 08 1c w 30 09 05 40 7b 1c 05 60 79 1c 05 60 7a 00 00 00 00 00 00 00 00 00 00 00 00 10 00 00 91 18 05 a0 90 1c w 30 29 05 c0 92 1c 05 c0 8f 1c 05 a0 91 1c 05 e0 8e 1c 05 e0 93 1c 06 00 8d 1c 06 00 94 18 06 60 95 1c w 30 49 06 60 97 1c 06 40 9a 4c 06 40 98 00 00 00 00 5c 90 60 03 18 05 a0 50 1c 05 a0 51 1c 05 c0 52 10 w 30 69 00 40 a1 1c 05 c0 4f 1c 05 e0 4e 1c 05 e0 53 1c 06 00 4d 1c 06 00 54 w 30 00 10 w 30 08 18 w 30 09 06 60 55 1c 06 60 57 1c 06 40 5a 4c 06 40 58 00 00 00 00 5c 90 40 03 00 00 00 00 00 00 00 00 00 w 30 29 00 00 00 10 00 40 61 18 06 80 98 1c 06 80 97 1c 06 a0 95 00 00 00 00 5c 90 60 03 18 06 80 58 1c w 30 49 06 80 57 1c 06 a0 55 10 00 40 a0 18 06 20 8e 5c 90 40 03 18 06 40 97 1c 06 60 98 4c 06 40 99 10 w 30 69 00 40 60 1c 06 60 95 18 06 20 4e 5c 90 60 03 18 06 40 57 1c 06 60 58 w 30 00 11 w 30 08 4c w 30 09 06 40 59 10 00 40 9f 1c 06 60 55 00 00 00 00 5c 90 40 03 18 06 80 99 1c 06 80 95 1c 06 a0 98 10 w 30 29 00 40 5f 5c 90 60 03 00 00 00 00 00 00 00 00 00 00 00 00 10 00 40 9e 18 06 80 59 1c 06 80 55 1c w 30 49 06 a0 58 18 05 80 79 5c 90 40 03 18 05 a0 94 1c 05 c0 8d 4c 05 a0 8c 10 00 40 5e 1c 05 c0 93 1c w 30 69 05 e0 92 1c 05 e0 8e 1c 06 00 91 1c 06 00 8f 18 06 60 99 1c 06 60 98 w 30 00 12 w 30 08 1c w 30 09 06 40 95 4c 06 40 96 18 05 80 39 5c 90 60 03 18 05 a0 54 1c 05 c0 4d 4c 05 a0 4c 10 00 40 9d 1c w 30 29 05 c0 53 1c 05 e0 52 1c 05 e0 4e 1c 06 00 51 1c 06 00 4f 18 06 60 59 1c 06 60 58 1c 06 40 55 4c w 30 49 06 40 56 00 00 00 00 5c 90 40 03 00 00 00 00 00 00 00 00 00 00 00 00 10 00 40 5c 18 06 80 96 1c w 30 69 06 80 98 1c 06 a0 99 10 00 40 5d 00 00 00 00 5c 90 60 03 18 06 80 56 w 30 00 13 w 30 08 1c w 30 09 06 80 58 1c 06 a0 59 10 00 40 9c 18 06 20 92 5c 90 40 03 18 06 40 98 1c 06 60 96 4c 06 40 94 10 w 30 29 00 40 5c 1c 06 60 99 18 06 20 52 5c 90 60 03 18 06 40 58 1c 06 60 56 4c 06 40 54 10 00 40 9b 1c w 30 49 06 60 59 00 00 00 00 5c 90 40 03 18 06 80 94 1c 06 80 99 1c 06 a0 96 10 00 40 5b 00 00 00 00 5c w 30 69 90 60 03 18 06 80 54 1c 06 80 59 1c 06 a0 56 10 00 40 9a 5c 90 40 03 w 30 00 14 w 30 08 00 w 30 09 00 00 00 00 00 00 00 00 00 00 00 10 00 40 5a 00 00 00 00 00 00 00 00 00 00 00 00 01 02 a0 d0 00 w 30 29 00 00 00 00 00 00 00 09 00 00 1f 09 00 20 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 w 30 49 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 w 30 00 00 w 30 7f 28 w 30 01 04 w 30 7f 50 w 30 01 04 w 30 7f 64 w 30 30 04 w 30 31 00 w 30 7f 78 w 30 30 04 w 30 31 00 w 30 7f 00 w 30 3f c2 w 30 40 00 w 30 51 c2 w 30 52 00 w 30 00 01 w 30 1b 33 w 30 3b 00 w 30 3c 00 w 30 00 04 w 30 01 00 w 30 0a 00 w 30 08 50 w 30 07 01 w 30 01 10 w 30 21 10 w 30 06 80 w 30 27 01 w 30 28 40 w 30 28 50 w 30 2f 01 w 30 2f 01 w 30 76 06 w 30 0a 01 w 30 2b 01 w 30 2e 10 w 30 2a 04 w 30 2e 13 w 30 2a 24 w 30 2a 25 w 30 00 00 w 30 7f 64 w 30 14 00 w 30 7f 78 w 30 14 00 w 30 7f 00 w 30 0b 82 w 80 6b 33 w 30 7f 50 w 30 00 01 w 30 3a 01 w 30 7f 50 w 30 00 00 w 30 01 07 w 30 7f 50 w 30 00 01 w 30 3a 01 w 30 7f 50 w 30 00 01 w 30 36 01 w 30 7f 50 w 30 00 00 w 30 01 07 w 30 7f 50 w 30 00 01 w 30 36 01 w 44 0e 7f w 44 06 ff w 44 0c f7 w 44 04 f7 w 44 0e 3f w 44 06 bf w 44 0e 1f w 44 06 bf w 44 0e 0f w 44 06 bf w 30 00 00 w 30 7f 50 w 30 00 01 w 30 0c 40 w 30 0d 00 00 00 w 30 00 01 w 30 01 07 w 30 00 01 w 30 0c 40 w 30 0d 00 00 00 w 44 0c 77 w 44 04 77 w 98 00 00 w 9a 00 00
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Forum Post: RE: ADS1247: Measuring 6 PT100 using a single ADS1247
Joseph Hi, I understand what you are saying however I want to keep the solution with minimal number of component as possible considering/compromising with the measurement accuracy. There is a anothert chip of AD AD707: - 2.5 to 5 Ohm resistance over temperature rang of -40 to 85. (The application is 0 -70). - 0.3 Ohm resistance match. - 0.5 Ohm resistance flatness. Taking this number what will be the error rate and how it will affect the bit resolution? If the results will not be good enough I will use two MUX chips. And one general question, if the resolution required is for 16 bits, is there an advantage of using a 24 bit resolution chip instead of 16? Noam
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Forum Post: RE: PGA400Q1EVM: PGA400-Q1 TEST register 0xFF
Is there anyone who knows about that? Thank you, Takishin
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Forum Post: TLV320AIC3254: ANC application note
Part Number: TLV320AIC3254 Dear Sir/ Madam, Know that this device can use for ANC, may i know is there any application notes for me to do some reference on how to design ANC using this device? Or any information that TI can provide to help me on the ANC design using this device? Hope to hear from you soon. Thank you so much! Best regards, KH
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Forum Post: TLV1578: TLV1578 alternatives
Part Number: TLV1578 Hi, I have an application where I need an 8ch MUXed, 10bit ADC that has a very short wake-up time to conversion results available time of a few µs. I have seen the TLV1578 but not sure if this is the best choice. Would you recommend other devices as well? Thanks and regards, KF
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Forum Post: ADS1298RECGFE-PDK: issues on reading respiration from a real patient
Part Number: ADS1298RECGFE-PDK Hi, my company has bought a ADS1298RECGFE-PDK Evauation Module and we are interested in the respiration signal. First we tryed to read respiration data generated by a Patient Simulator ( Rigel 333 ) with board configurations illustrated on ADS1298RECG-FE User's Guide Section 5.3 (the only one difference is that I've set Channel Control Register Gain to 1 instead of 6). The simulation reported next is with: Rate = 15 bpm, Imp = 500 Ohm, dR = 1.0 Ohm, Apne = off. The results it's, IMHO, good. In one minute of recording I can count clearly 13 breaths and I can understand that there is two more on the beginning that I can't see because of "Unsettled Points to Remove" and convergence of the Low-Pass filter or probably some noise induced by me on starting operations (like involuntary touching ECG cables from Patient Simulator to Evaluation Board). So until here it's all right. After that we has choose to test on a Real Patient with medical electrodes ( FIAB, Euro ECG Electrodes: F9089 ) positioned in V6 and V6R as shown in the image below: We kept the same board configurations as the Patient Simulator test. To try to be in the most similar conditions possible to the previous test we used a metronome to simulate a breath rate at 15 bpm and this is the result: We has test many times and the results is all like the one reported above, that are really far away from the ones from Patient Simulator. The only one thing that change on the two kind of test is the source of data, where on first there is the Patient Simulator on second test there is connected electrodes positioned on the Patient (I mean that we use the same cables, same connectors and same electronics excepts for electrodes). Someone has some suggestion or some explanation for what is happening? There is something that I don't understand or I don't see that will cause this difference in results? Thank you very much in advance. Best regards: Manuel Bonini.
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Forum Post: ADS1015: Config register not changing when being written to
Part Number: ADS1015 I am trying to change the config register to change the mux configuration and start a one-shot conversion. Below I show the trace of my communication with the device. You can see from the traces and the decoding that I am setting the MSByte of the configuration register to 0b11000101 and not changing the LSByte. So Packet 1-2 is setting address pointer register to the config register and reading from it. Packet 3-5 is performing sending MSB and LSB back to the slave, but first the MSB is logic OR with 0b11000101 to set the mux and start a oneshot conversion. The changed MSB and unchanged LSB and then written back to the config register on the slave.Then packet 6-7 is reading back the config register from the slave. Then when I try to read from the configuration register (packets 6-7) the MSB is the same as before I wrote to it, so my change did nothing. What am I doing wrong here? Why can't I overwrite the register?
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Forum Post: PCM5102A: can PCM5102 be damaged , if DVDD supply is 0 V (short to GND) ?
Part Number: PCM5102A Hello, i connected PCM5102a with 2x VDD , 3.3 V ; the AVDD was 3.3V , but DVDD was shorted to GND on first power up, input signals active at 3.3V level; then found the short, removed it and power up again; but -- no output signal coming , L/R out at zero. so : can this chip be damaged now ? (input L/R , data, Bclk (left just.) seem ok, an old DAC is playing with same signals same time)
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Forum Post: TLV320AIC3204: ADC Bypass Using Mixer Amplifiers
Part Number: TLV320AIC3204 Hi, Could you please give me your advice whether MCLK, BCLK and WCLK can be halted or not if applying "ADC Bypass Using Mixer Amplifiers" which is mentioned on page 28 of TLV320AIC3204 data sheet ? In addition, please tell me how to set this register configuration. Best regards, Kato
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Forum Post: RE: ADS5287: Why it can't output always 0 constantly in SINGLE_CUSTOM_PAT test mode
Hi, So if you write x8110 you get a clock that is 12 * sampleclock? That would agree with the LVDS Timing Diagram on page 10, since this 10 bit device appends two zeros to the 10 bit data to output 12 bits. The ADS5287 is a 10 bit version of the ADS5281 and ADS5282 device. So for the 10 bit version of this device the two least significant bits are made zero, but the device still outputs in 12 bit mode. The ADS5294 is of a different family of devices, but it would not surprise me that some of the Verilog for the digital logic may be common between the two families. Seeing that in the ADS5287 that the bits D8 through D11 do have an effect on the LVDS clock output would confirm this. The datasheet for the ADS5281 and ADS5282 say to always write '1' to bit D9 which would be correct for those devices. It may be that for the 10bit ADS5287 that it would be D8 that should get a '1' instead of D9, but I would have to confirm that with the design team. Since the 10 bit device makes the two lsb's zero, it may be that the clock rate is lengthened by two bits so that selecting '10bit' operation means the output clock is 12x, and '12bit operation' would result in a clock 14x, etc. But looking at the datasheet for ADS5294 is only a clue as to why you see what you see, since that is a different device. I will ask the design team for confirmation. But in the meantime write x8110 if that gives you the operation you wish to see. Regards, Richard P.
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Forum Post: RE: DAC3174: DAC3174
Hi, Thank you for letting us know. I am glad it is resolved Regards, Richard P.
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Forum Post: RE: TLV320AIC3268: Interface of the Audio output to external Class D amplifier and speaker
Hi, Diego Meléndez López Thanks for the quick response, this answers my question very well Regards Sunil
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Forum Post: RE: DAC38J84: Level of spurs due to periodic SYSREF
Hi Izik, Sorry for the late response. This question was assigned to the wrong product line. I've corrected this and sent a note for our team. Best regards, Nir.
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Forum Post: RE: DAC3174: Test plan using Altera Arria10 SoC Evaluation Board
Ah, the EVM has gone to the locking connector from Samtec. I was not expecting that issue. Our DAC and ADC EVMs have been using these Samtec connectors for many years for the LVDS signals, and one issue with the original connectors was that there was nothing to hold them together, so often times while connecting SMA cables the EVM would pull away from the FPGA card. To improve on that, Samtec added the posts to the connector that snap into the mating connector so that some force would be needed to pull them apart. To some extent these two styles of connector were expected to be compatible, but if you look at the plastic housing on the one with posts you can see a little slant on the ends of the plastic around the outside segments and this prevents the EVM plastic from mating with the adapter plastic. We have seen this on occasion with a number of older EVMs. What we have done on these occasions is to cut off the extra plastic on the connector with the posts. We would take a fine saw blade (such as a hacksaw blade) and cut through the plastic outside the two end segments to remove that plastic sloping portion and cut down to the EVM and then unsolder the locking post. an alternative is to unsolder the locking connector, and procure and solder downin its place the non-locking connector. The is a wiki posting showing one of these at https://e2e.ti.com/support/data_converters/high_speed_data_converters/w/design_notes/3316.dac348x-hsmc-connectors?keyMatch=samtec%20connector%20locking%20post%20saw&tisearch=Search-EN-Everything The easiest thing is to saw off the portion of the locking connector that is getting in the way. You could do so yourself, or if you wish you could ship the adapter to us and we could make the modification and ship it back to you. Attached is picture of where to cut the locking connector (using the 2 segment connector used on the ADCs rather than the 3 segment connector, but the concept is the same. The picture was just 'edited' to show the extra plastic removed which is why you don't see the holes where the posts would have been unsoldered.) Regards, Richard P.
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Forum Post: RE: TLV320DAC3120: MINIDSP LOWPASS FILTER CONFIGURATION
Hi Ivan, Thank you for your help! Best Regards, Amine.
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Forum Post: RE: PCM5102A: can PCM5102 be damaged , if DVDD supply is 0 V (short to GND) ?
Hi Alfred, It is difficult to say whether the PCM5102 is damaged. It may depend on the current your digital pins were capable of sourcing. When DVDD is held low the ESD diodes on the digital input pins would be during on when the inputs were high, sinking current from the digital resource. I suggest you investigate how if there are other issues with the board before you replace the device. You could also confirm if the device is consuming the correct quiescent current, as specified in the datasheet (page 9 and 10). If the current is incorrect and you can find no other issues with the board, then you should replace the device. Thanks! Paul
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Forum Post: RE: PCM5102A: can PCM5102 be damaged , if DVDD supply is 0 V (short to GND) ?
Thanks for helping, i will check power current (and tell..) ; input been driven by 74LVX32 ...; best regards Alfred
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