wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 30

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
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PSRR PERFORMANCE
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
0
0.1
0.1
0.1
0.1
PSRR performance for typical audio paths is illustrated in the graphs below.
IN3 via OPMIX/OPGA to OUT3/4 - 3.3V AVDD
IN4 to OUT3/4 - 3.3V AVDD
LIN2 to SPK (Class D) - 3.3V SPKVDD
LIN2 to SPK (Class D) - 5.0V SPKVDD
LIN2 to SPK (Class AB) - 3.3V SPKVDD
LIN2 to SPK (Class AB) - 5.0V SPKVDD
LIN2 to SPK (Class D) - 3.3V AVDD
LIN2 to SPK (Class AB) - 3.3V AVDD
DAC via OPMIX/OPGA to SPK (Class AB) - 3.3V AVDD
IN1PGA to LOP/ROP - 3.3V AVDD
LIN2 & DAC to SPK clas s AB/D
1
1
LIN2 to SPK class AB/D
1
1
Line-In to
PSRR - SPKVDD
OUT3/4 via OPM IX
PSRR - AVDD
PSRR - AVDD
PSRR - AVDD
Frequency (k Hz)
Fre quency (k Hz)
Frequency (kHz)
Fre quency (kHz)
Line-Out
10
10
10
10
100
100
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
0
0.1
0.1
0.1
0.1
IN3 via OPMIX to LOUT/ROUT - 3.3V AVDD
IN3 via OPMIX to LOUT/ROUT - 3.3V AVDD (additional 10uF on VMID)
IN3 via OPMIX to LOUT/ROUT - 3.3V AVDD (VMIDMODE=10)
DAC via OPMIX to LOUT/ROUT - 3.3V AVDD
IN4 to OUT3/4 - 3.3V HPVDD
IN3 via OPMIX to LOUT/ROUT - 3.3V HPVDD
IN2 via IPMIX to ADC - 3.3V AVDD
IN1PGA via IPMIX to ADC - 3.3V AVDD
MICBIAS - MBSEL = 0
MICBIAS - MBSEL = 1
IN3 & DAC to LROUT via OPMIX
1
1
1
1
PSRR - MICBIAS
PSRR - HPVDD
PSRR - AVDD
PSRR - AVDD
Various Paths
Line-In to
Fre que ncy (kHz)
Fre que ncy (kHz)
Freque ncy (k Hz)
Freque ncy (k Hz)
MBSEL=0/1
ADC
10
10
10
10
PP, April 2009, Rev 3.0
Pre-Production
100
100
100
100
30