STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 167

• Manufacturer Part Number: STA381BWSTR
• Description: Audio DSPs Sound Terminal 2.1 High EFF Dig Audio
• Manufacturer: STMicroelectronics

Specifications of STA381BWSTR

• Product Category: Audio DSPs
• Rohs: yes
• Operating Supply Voltage: 4.5 V to 25.5 V
• Operating Temperature Range: 0 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: VQFN-48
• Snr: 100 dB

STA381BWS
Note:
8.3
Note:
Besides the digital input to the power output path, a line in to the headphone / 2Vrms line out
path is provided. The headphone and line out block diagram is shown in
overall gain is determined by the external resistors R1 and R2 as:
Gain=R2/R1*2
The LINEINR/LINEINL pins can be either connected to an external line in or to the
F3XL/F3XR pins as depicted in
possible to route the digital input (SAI) content on both the power and the line
out/headphone output.
The charge pump of the headphone and line out cannot drive a purely capacitive load.
Please refer to AN3959 (2.0-channel demonstration board based on the STA381BW and
STA381BWS) for detailed information about headphone and line out filtering.
Typical output configuration
Figure 48
to the application note for all the other schematics for the recommended output
configuration.
Figure 48. Output configuration for stereo BTL mode in filterlight configuration
For further information, please refer to application note AN3959, 2.0-channel demonstration
board based on the STA381BW and STA381BWS.
illustrates the typical output configuration used for BTL stereo mode. Please refer
Doc ID 018937 Rev 6
Figure 44
and
Figure
45. Thanks to this latter option it is
Figure
Applications
47. The
167/171