STA333W STMicroelectronics, STA333W Datasheet - Page 29

• Manufacturer Part Number: STA333W
• Description: DIG AUDIO SYSTEM, 2-CH, 36POWERSSOP
• Manufacturer: STMicroelectronics

Specifications of STA333W

• Svhc: No SVHC (15-Dec-2010)
• Package / Case: PowerSSO
• Interface: I2S
• No. Of Pins: 36
• Operating Temperature Range: 0°C To +70°C
• Supply Voltage Max: 18V
• Supply Voltage Min: 4.5V
• Termination T: RoHS Compliant
• Interface Type: I2S
• Rohs Compliant: Yes

STA333W
Max power correction
Table 26.
Setting the MPC bit turns on special processing that corrects the STA333W power device at
high power. This mode lowers the THD+N of a full DDX system at maximum power output
and slightly below. If enabled, MPC is operational in all output modes except tapered
(OM[1:0] = 01) and binary. When OCFG = 00, MPC does not affect channels 3 and 4, the
line-out channels.
Noise-shaper bandwidth selection
Table 27.
AM mode enable
Table 28.
The STA333W features a DDX processing mode that minimizes the amount of noise
generated in frequency range of AM radio. This mode is intended for use when DDX is
operating in a device with an AM tuner active. The SNR of the DDX processing is reduced to
approximately 83 dB in this mode, which is still greater than the SNR of AM radio.
PWM speed mode
Table 29.
Distortion compensation variable enable
Table 30.
1
2
3
4
5
Bit
Bit
Bit
Bit
Bit
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Max power correction
Noise-shaper bandwidth selection
AM mode enable
PWM speed mode
Distortion compensation variable enable
1
0
0
0
0
RST
RST
RST
RST
RST
MPC
NSBW
AME
PWMS
DCCV
Doc ID 13365 Rev 2
Name
Name
Name
Name
Name
1: enable power bridge correction for THD reduction
near maximum power output.
0: uses preset DC coefficient.
1: uses DCC coefficient.
1: 3
0: 4
0: normal DDX operation
1: AM reduction mode DDX operation
0: normal speed (384 kHz) all channels
1: odd speed (341.3 kHz) all channels
rd
th
order NS
order NS
Description
Description
Description
Description
Description
Register description
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