WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 11

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Pre-Production
w
Test Conditions
DCVDD=1.8V, AVDD1=AVDD2=DBVDD=3.3V, T
PARAMETER
DAC to L/R mixer into 10kΩ / 50pF load on L/ROUT2, class AB mode
LOUT2VOL, ROUT2VOL, DACLVOL and DACRVOL = 0dB
Full-scale output
Signal to Noise Ratio
Total Harmonic Distortion
Total Harmonic Distortion + Noise
Channel Separation
Full-scale output voltage
Signal to Noise Ratio
Total Harmonic Distortion
Total Harmonic Distortion + Noise
Channel Separation
DAC to left and right mixer into headphone 16Ω load on LOUT1 and ROUT1
LOUT1VOL, ROUT1VOL, DACLVOL and DACRVOL = 0dB
Full-scale output
Signal to Noise Ratio
Total Harmonic Distortion
Total Harmonic Distortion + Noise
Channel Separation
DAC to OUT3 and OUT4 mixers into OUT3/OUT4 outputs into (10kΩ / 50pF load. DACVOLL and DACVOLR = 0dB)
1
6
6
6
3
3
3
4
4
4
5
5
5
SYMBOL
THD+N
THD+N
THD+N
SNR
THD
SNR
THD
SNR
THD
A
= +25
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=2.5V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=2.5V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=2.5V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=2.5V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=3.3V
AVDD1=AVDD2=3.3V
Po = 20mW, RL=16Ω
P
o
TEST CONDITIONS
ROUT2VOL = 0dB
C, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
o
1kHz input signal
LOUT2VOL and
full-scale signal
full-scale signal
= 20mW, RL=16Ω
22Hz to 20kHz
22Hz to 20kHz
22Hz to 20kHz
0dBFS input
0dBFS input
0dBFS input
0dBFS input
1kHz signal
1kHz signal
A-weighted
A-weighted
A-weighted
A-weighted
MIN
AVDD1/3.3
AVDD2/3.3
AVDD1/3.3
95.5
93.5
95.5
TYP
100
100
100
100
100
-84
-82
-82
-80
-84
-82
-79
-75
96
98
PP, Rev 3.5, January 2007
MAX
-80
-78
92
WM8985
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
UNIT
V
V
V
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
rms
rms
rms
11