WM8959
Pre-Production
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
Bypass Path Performance (Line Outputs 10kΩ / 50pF load, Headphone Outputs 16Ω load, Speaker Output 8Ω BTL load)
F1
SNR (A-weighted)
THD (PO=20mW)
THD+N (PO=20mW)
THD (PO=5mW)
Differential Input
on RXP/RXN to
Differential
110
-72
-70
-68
-66
80
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
Output on
OUT3/OUT4,
AVDD=HPVDD=
3.3V
THD+N (PO=5mW)
AVDD PSRR (217Hz)
HPVDD PSRR (217Hz)
DC Offset at Load
SNR (A-weighted)
THD (PO=20mW)
THD+N (PO=20mW)
THD (PO=5mW)
90
5
Differential Input
on RXP/RXN to
Differential
108
-70
-68
-67
-65
Output on
OUT3/OUT4,
AVDD=HPVDD=
2.7V
THD+N (PO=5mW)
F2
SNR (A-weighted)
THD (PO=20mW)
THD+N (PO=20mW)
THD (PO=5mW)
RXVOICE via
LOMIX or
ROMIX to
Headphone
Outputs,
AVDD=HPVDD=
3.3V
100
-77
-75
-73
-71
45
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
THD+N (PO=5mW)
AVDD PSRR (217Hz)
HPVDD PSRR (217Hz)
SNR (A-weighted)
THD (PO=20mW)
THD+N (PO=20mW)
THD (PO=5mW)
85
RXVOICE via
LOMIX or
ROMIX to
Headphone
Outputs,
AVDD=HPVDD=
2.7V
98
-74
-72
-72
-70
THD+N (PO=5mW)
F3
SNR (A-weighted)
THD (PO=0.5W)
Line Input to
SPKMIX,
AVDD=3.3V,
SPKVDD=5V,
ACGAIN=
93
-87
-85
-81
-79
45
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV
THD+N (PO=0.5W)
THD (PO=1.0W)
DCGAIN=1.52,
THD+N (PO=1.0W)
AVDD PSRR (217Hz)
SPKVDD PSRR(217Hz)
SNR (A-weighted)
THD (PO=0.5W)
Class D Mode
80
Line Input to
SPKMIX,
AVDD=3.3V,
SPKVDD=5V,
91
101
-78
-76
-76
-74
45
-70
-68
-66
-64
THD+N (PO=0.5W)
THD (PO=1.0W)
Class AB Mode
THD+N (PO=1.0W)
AVDD PSRR (217Hz)
SPKVDD PSRR(217Hz)
DC Offset at Load
80
5
PP, May 2008, Rev 3.1
16
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
