TAS2553_15 datasheet(18/58 Pages) TI

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TAS2553

SLAS978B – SEPTEMBER 2013 – REVISED FEBRUARY 2014

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Table 1. TAS2553 Gain Table

GAIN BYTE:

NOMINAL GAIN

GAIN[4:0]

00000

–7 dB

10000

9 dB

00001

–6 dB

10001

10 dB

00010

–5 dB

10010

11 dB

00011

–4 dB

10011

12 dB

00100

–3 dB

10100

13 dB

00101

–2 dB

10101

14 dB

00110

–1 dB

10110

15 dB

00111

0 dB

10111

16 dB

01000

1 dB

11000

17 dB

01001

2 dB

11001

18 dB

01010

3 dB

11010

19 dB

01011

4 dB

11011

20 dB

01100

5 dB

11100

21 dB

01101

6 dB

11101

22 dB

01110

7 dB

11110

23 dB

01111

8 dB

11111

24 dB

7.3.9 Class-D Edge Rate Control

The edge rate of the Class-D output is controllable via an I2C register. This allows users the ability to adjust the

switching edge rate of the Class-D amplifier, trading off some efficiency for lower EMI. Table 2 lists the typical

edge rates.

Table 2. Class-D Edge Rate Control

ERC BYTE:

TR AND TF

EDGE[2:0]

(TYPICAL)

000

50 ns

001

40 ns

010

30 ns

011

25 ns

100

14 ns

101

13 ns

110

12 ns

111

11 ns

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