TFA9812HN PHILIPS [NXP Semiconductors], TFA9812HN Datasheet - Page 35

• Manufacturer Part Number: TFA9812HN
• Description: BTL stereo Class-D audio amplifier with I2S input
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
Table 40.
Table 41.
TFA9812_2
Preliminary data sheet
Band
Frequency
(Hz)
Q-factor
Gain (dB)
Bit
Symbol
Default
Bit
Symbol
Default
Default configuration equalizer for f
Register 2Ch: PWM signal control
A1/B1
31
1
0
9.5.6 PWM signal control
RSD
RSD
15
0
7
0
Table 42.
Bit
7
6 to 5
4
3 to 2
1 to 0
A2/B2
63
1
0
PLIM1
RSD
14
0
6
0
Bit description address 2Ch
A3/B3
125
1
0
PLIM0
Symbol
GAIN
PLIM[1:0]
PW_OFF
PW_SF[1:0]
PW_CL[1:0]
RSD
13
0
5
0
A4/B4
250
1
0
Rev. 02 — 22 January 2009
s
= 44.1 kHz
PW_OFF
A5/B5
500
1
0
RSD
12
0
4
0
Description
+24 dB gain boost:
Output power limitation:
Hard mute control:
PWM switching frequency:
PWM clip level:
BTL stereo Class-D audio amplifier with I
0 = Gain boost 0 dB
1 = Gain boost +24 dB
0 = Maximum power
1 = Maximum power
2 = Maximum power
3 = Maximum power
0 = No hard mute
1 = Hard mute enabled, implemented by PWM signal
with 50 % duty cycle
0 = 350 kHz
1 = 400 kHz
2 = 700 kHz
3 = 750 kHz
0 = < 0.5 % THD
1 = 10 % THD
2 = 20 % THD
3 = 30 % THD
C1/D1
1000
1
0
PW_SF1
RSD
11
0
3
0
C2/D2
2000
1
0
PW_SF0
RSD
10
0
2
1
1.5 dB
3.0 dB
4.5 dB
C3/D3
4000
1
0
PW_CL1
RSD
9
0
1
0
C4/D4
8000
1
0
© NXP B.V. 2009. All rights reserved.
TFA9812
PW_CL0
C5/D5
16000
1
0
2
RSD
S input
8
0
0
1
35 of 66