Hello, all
Now we are evaluating TLV320AIC3101EVM, then would like to ask you regarding amplitude characteristic on TLV320AIC3101.
As I measured this characteristic by following condition, the output amplitude was dropped about 5dB compared with input amplitude.
Input signal level: 20kHz @20dBm
Hardware setting: IN2L(J7)=>A/D=> roop back =>DAC=>Line(LEFT on J10)
Amplitude measurement equipment: Panasonic P-7723A
Script file which is read on GUI: Please see the attachment.
i i2cfast
w 30 00 00
w 30 01 80
w 30 02 00
w 30 03 91
w 30 04 10
w 30 05 6E
w 30 06 00
w 30 07 0A
w 30 08 C0
w 30 09 30
w 30 0A 00
w 30 0B 01
w 30 0C 00
w 30 0D 00
w 30 0E C0
w 30 0F 00
w 30 10 00
w 30 11 0F
w 30 12 F0
w 30 13 7C
w 30 14 78
w 30 15 78
w 30 16 7C
w 30 17 78
w 30 18 78
w 30 19 00
w 30 1A 00
w 30 1B FE
w 30 1C 00
w 30 1D 00
w 30 1E FE
w 30 1F 00
w 30 20 00
w 30 21 00
w 30 22 00
w 30 23 00
w 30 24 00
w 30 25 C0
w 30 26 00
w 30 27 00
w 30 28 40
w 30 29 00
w 30 2A 9E
w 30 2B 00
w 30 2C 00
w 30 2D 00
w 30 2E 00
w 30 2F 00
w 30 30 00
w 30 31 00
w 30 32 00
w 30 33 06
w 30 34 00
w 30 35 00
w 30 36 00
w 30 37 00
w 30 38 00
w 30 39 00
w 30 3A 06
w 30 3B 00
w 30 3C 00
w 30 3D 00
w 30 3E 00
w 30 3F 00
w 30 40 00
w 30 41 06
w 30 42 00
w 30 43 00
w 30 44 00
w 30 45 00
w 30 46 00
w 30 47 00
w 30 48 06
w 30 49 00
w 30 4A 00
w 30 4B 00
w 30 4C 00
w 30 4D 00
w 30 4E 00
w 30 4F 02
w 30 50 00
w 30 51 00
w 30 52 80
w 30 53 00
w 30 54 00
w 30 55 00
w 30 56 0B
w 30 57 00
w 30 58 00
w 30 59 00
w 30 5A 00
w 30 5B 00
w 30 5C 80
w 30 5D 0B
w 30 5E 00
w 30 5F 00
w 30 60 00
w 30 61 00
w 30 62 00
w 30 63 00
w 30 64 00
w 30 65 00
w 30 66 02
w 30 67 00
w 30 68 00
w 30 69 00
w 30 6A 00
w 30 6B 00
w 30 6C 00
w 30 6D 00
w 30 6E 00
w 30 6F 00
w 30 70 00
w 30 71 00
w 30 72 00
w 30 73 00
w 30 74 00
w 30 75 00
w 30 76 00
w 30 77 00
w 30 78 00
w 30 79 00
w 30 7A 00
w 30 7B 00
w 30 7C 00
w 30 7D 00
w 30 7E 00
w 30 7F 00
On these configuration, the output was 5dB dropped than input.
Please let us clarify on which part of AIC3101 this gain reduction was caused.
We thank you in advance for your information.
Best regards,
