wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 8

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8982
w
Test Conditions
DCVDD=1.8V, AVDD=DBVDD=SPKVDD=VBVDD = 3.3V, T
otherwise stated.
PARAMETER
Mute Attenuation
Analogue to Digital Converter (ADC)
Signal to Noise Ratio (Note 5)
Total Harmonic Distortion
(Note 6)
Digital to Analogue Converter (DAC) to Line-Out (MONOOUT with 10kΩ / 50pF load)
Full-scale output
Signal to Noise Ratio (Note 5)
Total Harmonic Distortion
(Note 6)
Output Mixers (MX1, MX2)
Maximum PGA gain into mixer
Minimum PGA gain into mixer
PGA gain step into mixer
Analogue Outputs (SPKOUTP, SPKOUTN)
Maximum Programmable Gain
Minimum Programmable Gain
Programmable Gain step size
Mute attenuation
Speaker Output (SPKOUTP, SPKOUTN with 8Ω bridge tied load, INVOUTN=1)
Full scale output voltage, 0dB
gain. (Note 7)
Output Power
Total Harmonic Distortion
Signal to Noise Ratio
Power Supply Rejection Ratio
(50Hz-22kHz)
MONOOUT Output (with 10kΩ / 50pF load)
Full-scale output voltage, 0dB
gain (Note 7)
Signal to Noise Ratio (Note 5)
Total Harmonic Distortion
(Note 6)
Microphone Bias
Bias Voltage
SYMBOL
V
PSRR
SNR
SNR
SNR
MICBIAS
THD
THD
THD
SNR
THD
P
O
Guaranteed monotonic
Guaranteed monotonic
ALCMODE=1 (limiter),
SPK/MONOBOOST=0
SPK/MONOBOOST=1
P
P
P
P
PGA gains set to 0dB,
PGA gains set to 0dB,
1kHz, full scale signal
A-weighted, 0dB gain
SPKVDD=5V (boost)
TEST CONDITIONS
O
O
O
O
MCLK=12.288MHz
MONOBOOST=0
MONOBOOST=1
SPKRBOOST=0
SPKRBOOST=1
=200mW, R
=320mW, R
=500mW, R
=860mW, R
SPKVDD=3.3V,
full-scale signal
full-scale signal
SPKVDD=3.3V
SPKVDD=3.3V
SPKVDD=5V,
SPKVDD=5V
SPKVDD=5V
-3dBFS input
R
R
MBVSEL=0
A-weighted
A-weighted
R
R
L
L
(Note 3)
R
R
L
L
= 8Ω BTL
= 8Ω BTL
= 10 kΩ
L
L
= 10kΩ
Output power is very closely correlated with THD; see below
A
= 8Ω
= 8Ω
= +25
L
L
L
L
= 8Ω,
= 8Ω,
= 8Ω,
= 8Ω,
o
C, 1kHz signal, fs = 48kHz, 24-bit audio data unless
MIN
85
90
(time doubles with each step)
0.18, 0.36, 0.73, … , 186
(SPKVDD/3.3)*1.5
(SPKVDD/3.3)*1.5
SPKVDD/3.3
SPKVDD/3.3
(AVDD/3.3)
0.9*AVDD
AVDD/3.3
0.04
0.02
1.5x
TYP
120
-84
-84
-15
-57
-68
1.0
-40
-74
1.0
-40
-84
95
98
+6
+6
85
90
90
80
69
98
3
1
PP, Rev 3.2, September 2008
MAX
-74
-76
Pre-Production
Vrms
Vrms
Vrms
Vrms
UNIT
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
%
%
%
V
8