WM8973 Wolfson Microelectronics Ltd., WM8973 Datasheet - Page 7

• Manufacturer Part Number: WM8973
• Description: The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

Production Data
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ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, T
data unless otherwise stated.
PARAMETER
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to ADC out
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
Input Resistance
Input Capacitance
Signal to Noise Ratio
(A-weighted)
Dynamic Range
Total Harmonic Distortion
ADC Channel Separation
Channel Matching
Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT)
0dB Full scale output voltage
Mute attenuation
Channel Separation
DAC to Line-Out (L/ROUT2 with 10k
Signal to Noise Ratio
(A-weighted)
Total Harmonic Distortion
Channel Separation
Headphone Output (LOUT1/ROUT1, using capacitors)
Output Power per channel
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
SYMBOL
V
SNR
SNR
SNR
THD
THD
THD
P
INFS
/ 50pF load)
O
HPVDD=3.3V, R
HPVDD=3.3V, R
HPVDD=1.8V, R
HPVDD=1.8V, R
1kHz, full scale signal
L/RINPUT1 to ADC,
L/RINPUT1 to ADC,
TEST CONDITIONS
L/RINPUT1 unused
L/RINPUT1 unused
PGA gain = +30dB
DC Measurement
PGA gain = 0dB
MONOOUT pin
to analogue out
HPVDD = 3.3V
HPVDD = 1.8V
AVDD = 3.3V
AVDD = 1.8V
AVDD = 3.3V
AVDD = 1.8V
-1dBFs input,
AVDD = 3.3V
-1dBFs input,
AVDD = 1.8V
AVDD=3.3V
AVDD=1.8V
AVDD=3.3V
AVDD=1.8V
1kHz signal
1kHz signal
analogue in
1kHz signal
P
P
P
P
-60dBFs
O
O
O
O
=20mW
=20mW
Output power is very closely correlated with THD; see below.
=5mW
=5mW
A
= +25
L
L
L
L
=32 ,
=16 ,
=32
=16
o
C, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
MIN
80
90
90
92
AVDD/3.3
0.545
0.008
0.016
0.022
0.013
0.018
0.02
TYP
100
1.0
1.5
-82
-74
0.2
-84
-80
-76
-73
-78
-75
22
16
17
10
95
90
95
85
90
81
85
98
93
96
96
PD Rev 4.2 September 2005
MAX
WM8973L
V rms
Vrms
UNIT
k
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
%
7