WM8960_06 Datasheet, PDF (8/88 Pages) Wolfson Microelectronics plc – Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

WM8960
Preliminary Technical Data
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = SPKVDD1 = SPKVDD2 = 3.3V, TA = +25^oC, 1kHz signal, fs = 48kHz, PGA gain =
0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
Headphone Output (HP_L, HP_R, using capacitors unless otherwise specified)
Output Power per channel
PO
Output power is very closely correlated with THD; see below.
Total Harmonic Distortion Plus
THD+N AVDD=2.7V, RL=32Ω
0.013
%
Noise
PO=5mW
-78
dB
AVDD=2.7V, RL=16Ω
PO=5mW
0.018
-75
AVDD=3.3V, RL=32Ω,
PO=20mW
0.025
-72
AVDD=3.3V, RL=16Ω,
PO=20mW
0.032
-70
AVDD=2.7V, RL=32Ω
PO=5mW; Capless mode
0.013
-78
AVDD=2.7V, RL=16Ω
PO=5mW; Capless mode
0.018
-75
AVDD=3.3V, RL=32Ω,
PO=20mW; Capless mode
0.025
-72
AVDD=3.3V, RL=16Ω,
PO=20mW; Capless mode
0.032
-70
Signal to Noise Ratio
SNR
AVDD = 3.3V
92
99
dB
(A-weighted)
AVDD = 2.7V
98
AVDD = 3.3V;
92
99
Capless mode
AVDD = 2.7V;
98
Capless mode
Speaker Outputs (DAC to SPK_LP, SPK_LN, SPK_RP, SPK_RN with 8Ω bridge tied load)
Output Power
Total Harmonic Distortion Plus
Noise
(DAC to speaker outputs)
PO
THD+N
Output power is very closely correlated with THD; see below
PO =200mW, RL = 8Ω,
0.01
%
SPKVDD1=SPKVDD2
-80
dB
=3.3V; AVDD=3.3V
PO =320mW, RL = 8Ω,
0.03
%
SPKVDD1=SPKVDD2
-72
dB
=3.3V; AVDD=3.3V
PO =500mW, RL = 8Ω,
0.011
%
SPKVDD1=SPKVDD2
-79
dB
=5V; AVDD=3.3V
PO =1W, RL = 8Ω,
0.03
%
SPKVDD1=SPKVDD2
-71
dB
=5V; AVDD=3.3V
w
PTD, September 2006, Rev 2.0
8