wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 47
wm8961
Manufacturer Part Number
wm8961
Description
Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8961.pdf
(116 pages)
- Current page: 47 of 116
- Download datasheet (2Mb)
WM8961
Pre-Production
Note that the register write to CP_DYN_PWR[1:0] must take place before the charge pump is
enabled. See the “Charge Pump” section.
SPEAKER OUTPUTS
The SPK_LP/SPK_LN and SPK_RP/SPK_RN output pins are class D speaker drivers. Each pair is
independently controlled and can drive an 8Ω BTL speaker. Output PGA volume is relative to AVDD,
while an additional boost stage (set by CLASSD_ACGAIN[2:0] ) is available to accommodate higher
SPKVDD1/SPKVDD2 supply voltages. This allows AVDD to be run at a lower voltage to save power,
while maximum output power can be delivered to the load, utilising the full range of SPKVDD1 and
SPKVDD2 supplies.
The output gain stage automatically centers the analogue output about
SPKVDD/2.
This
will
avoid
the
analogue
output
clipping
–
except
in
the
case
of
CLASSD_ACGAIN=12dB. The speaker output stage is illustrated in Figure 20
Figure 20 Speaker Output Stage
PP, August 2009, Rev 3.1
w
47
Related parts for wm8961
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
24-bit, 192khz 6-channel Dac With Volume Control
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
24-bit, 192khz 6-channel Dac
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
HI FI AND TELEPHONY DUAL CODEC
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Stereo Codec Portable Audio Applications
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Stereo Codec For Portable Audio Applications
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Multichannel Codec With S/pdif Transceiver
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Ac97 Audio Codec Mixer With Integrated Headphone Driver
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
Part Number:
Description:
Ac-link Interface Audio Dac
Manufacturer:
Wolfson Microelectronics plc
Datasheet: