TLC320AD75C Datasheet, PDF (38/43 Pages) Texas Instruments – 20-Bit Sigma-Delta Stereo ADA Circuit

FREQUENCY
25
31.5
40
50
63
80
100
125
160
200
250
315
400
500
630
Table 5–2. A-Weighted Data
A WEIGHTING (dB) FREQUENCY A WEIGHTING (dB)
– 44.6 ± 2
800
– 0.1 ± 1
– 39.2 ± 2
1000
0 ±0
– 34.5 ± 2
1250
0.6 ± 1
– 30.2 ± 2
1600
1.0 ± 1
– 26.1 ± 2
2000
1.2 ± 1
– 22.3 ± 2
2500
1.2 ± 1
– 19.1 ± 1
3150
1.2 ± 1
– 16.1 ± 1
4000
1.0 ± 1
– 13.2 ± 1
5000
0.5 ± 1
– 10.8 ± 1
6300
– 0.1 ± 1
– 8.6 ± 1
8000
– 1.1 ± 1
– 6.5 ± 1
10000
– 2.4 ± 1
– 4.8 ± 1
12500
– 4.2 ± 2
– 3.2 ± 1
16000
– 6.5 ± 2
– 1.9 ± 1
10
0
– 10
– 20
– 30
– 40
– 50
20
100
1k
f – Signal Frequency – Hz
10 k 20 k
Figure 5–2. A-Weighted Function
5–6