Pre-Production
WM8959
PSRR PERFORMANCE
SPKVDD – LIN2 TO SPEAKER
AVDD – LIN2 TO SPEAKER
PSRR - SPKVDD
LIN2 to SPK class AB/D
PSRR - AVDD
LIN2 to SPK class AB/D
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
LIN2-SPK (Class D) - 5V SPKVDD
LIN2-SPK (Class AB) - 5V SPKVDD
LIN2-SPK (Class D 5V SPKVDD) - 3.3V AVDD
LIN2-SPK (Class AB 5V SPKVDD) - 3.3V AVDD
0.1
1
10
100
100
100
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
SPKVDD – DAC TO SPEAKER
AVDD – DAC TO SPEAKER
PSRR - SPKVDD
DAC to SPK class AB/D
PSRR - AVDD
DAC to SPK class AB/D
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
DACL-SPK (Class D) - 5V SPKVDD
DACL-SPK (Class AB) - 5V SPKVDD
DACL-SPK (Class D 5V SPKVDD) - 3.3V AVDD
DACL-SPK (Class AB 5V SPKVDD) - 3.3V AVDD
0.1
1
10
100
0.1
1
10
Frequency (kHz)
Frequency (kHz)
HPVDD – DAC TO HEADPHONE
AVDD – DAC TO HEADPHONE
PSRR - HPVDD
DAC to Headphone
PSRR - AVDD
DAC to Headphone
90
90
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
DAC-OMIX-LOUT/ROUT - 3.3V HPVDD
DAC-OMIX-LOUT/ROUT - 3.3V AVDD
DAC-OMIX-OPGA-Differential HP - 3.3V HPVDD
DAC-OMIX-OPGA-Differential HP - 3.3V AVDD
0.1
1
10
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
DCVDD – DAC TO HEADPHONE
AVDD – MICBIAS
PSRR - DCVDD
DAC to Headphone
PSRR - AVDD
MICBIAS
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
DAC-OMIX-LOUT/ROUT - 3.3V DCVDD
DAC-OMIX-LOUT/ROUT - 2.0V DCVDD
MICBIAS - MBSEL = 0
MICBIAS - MBSEL = 1
0.1
1
10
100
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
PP, May 2008, Rev 3.1
23
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
