wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 7

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
ELECTRICAL CHARACTERISTICS
AUDIO OUTPUTS
Note:
1.
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD=HPVDD=SPKVDD =3.3V, T
otherwise stated.
DAC to Line-Out (HPOUTL/R or MONOOUT with 10kΩ / 50pF load)
Full-scale output
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Power Supply Rejection
Speaker Output (LOUT2/ROUT2 with 8Ω bridge tied load, INV=1)
Output Power
Output Power at 1% THD
Abs. Max Output Power
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
Headphone Output (HPOUTL/R, OUT3 or LOUT2/ROUT2 with 16Ω or 32Ω load)
Output Power per channel
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
All THD values are valid for the output power level quoted above – for example, at HPVDD=3.3V and R
–76dB when output power is 10mW. Higher output power is possible, but will result in a deterioration in THD.
PARAMETER
SYMBOL
P
PSRR
SNR
THD
THD
SNR
THD
SNR
O
P
P
P
max
O
O
O
AVDD = 3.3V, PGA gains
100mV, 20Hz to 20kHz
P
P
P
P
TEST CONDITIONS
O
O
O
O
signal on AVDD
=10mW, R
=10mW, R
=20mW, R
=20mW, R
P
-3dB output
set to 0dB
O
=200mW
Output power is very closely correlated with THD; see below.
Output power is very closely correlated with THD; see below.
L
L
L
L
=16Ω
=32Ω
=16Ω
=32Ω
A
= +25
o
C, 1kHz signal, fs = 48kHz, 18-bit audio data unless
MIN
85
90
90
0.05
TYP
400
500
100
-87
-66
-76
-73
-75
-78
94
50
95
1
PD Rev 4.5 August 2006
L
MAX
=16Ω, THD is
-80
-70
WM9712L
V rms
UNIT
mW
mW
dB
dB
dB
dB
dB
dB
dB
%
7