WM8980CGEFL/RV WOLFSON [Wolfson Microelectronics plc], WM8980CGEFL/RV Datasheet - Page 9

• Manufacturer Part Number: WM8980CGEFL/RV
• Description: Stereo CODEC with Speaker Driver and Video Buffer
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Pre-Production
w
Test Conditions
DCVDD=1.8V, AVDD=DBVDD=SPKVDD=VBVDD = 3.3V, T
otherwise stated.
PARAMETER
Speaker Output (LOUT2, ROUT2 with 8 bridge tied load, INVROUT2=1)
Full scale output voltage, 0dB
gain. (Note 9)
Output Power
Total Harmonic Distortion
Signal to Noise Ratio
Power Supply Rejection Ratio
(50Hz-22kHz)
OUT3/OUT4 outputs (with 10k / 50pF load)
Full-scale output voltage, 0dB
gain (Note 9)
Signal to Noise Ratio (Note 6)
Total Harmonic Distortion
(Note7)
Channel Separation (Note 8)
Power Supply Rejection Ratio
(50Hz-22kHz)
Microphone Bias
Bias Voltage
Bias Current Source
Output Noise Voltage
Video Buffer
Low pass filter order
LPF -3dB cutoff
LPF gain flat to within 0.1dB
Maximum output voltage swing
Programmable Voltage Gain
Differential gain
Differential phase
Signal to Noise Ratio
SYMBOL
V
I
VSNR
PSRR
PSRR
MICBIAS
SNR
SNR
THD
THD
Vom
MICBIAS
DG
DP
Vn
P
Av
O
R
P
P
P
P
SPKVDD=5V (boost)
L
f=100kHz, THD=1%
TEST CONDITIONS
O
O
O
O
= 10k SPKVDD=5V
OUT3BOOST=0/
OUT4BOOST=0
OUT3BOOST=1
OUT4BOOST=1
SPKVDD=3.3V,
=200mW, R
=320mW, R
=500mW, R
=860mW, R
full-scale signal
SPKVDD=3.3V
SPKVDD=3.3V
SPKBOOST=0
SPKBOOST=1
SPKVDD=5V,
SPKVDD=5V
SPKVDD=5V
R
R
1K to 20kHz
1kHz signal
MBVSEL=0
MBVSEL=1
A-weighted
R
Vin=1Vp-p
Vin=1Vp-p
R
L
L
R
R
L
= 8 BTL
= 8 BTL
L
(boost)
= 10 k
L
L
= 10k
A
Output power is very closely correlated with THD; see below
= 8
= 8
= +25
L
L
L
L
= 8,
= 8,
= 8,
= 8,
o
C, 1kHz signal, fs = 48kHz, 24-bit audio data unless
MIN
0
(SPKVDD/3.3)*1.5
(SPKVDD/3.3)*1.5
SPKVDD/3.3
SPKVDD/3.3
0.65*AVDD
0.9*AVDD
3
rd
0.04
0.02
1.25
TYP
100
+60
-68
-40
-74
-40
-84
1.0
1.0
5.3
0.3
0.7
90
90
80
69
98
52
56
15
10
order
PP, Rev 3.8, May 2012
MAX
3
6
WM8980
nV/Hz
Vrms
Vrms
Vrms
UNIT
MHz
MHz
Vp-p
Deg
mA
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
%
%
%
%
V
V
9