wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 10

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

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WM8961
Test Conditions
MICVDD = 2.5V, DVDD = 1.8V, CPVDD=1.8V, AVDD = 1.8V SPKVDD1 = SPKVDD2 = 5V, T
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
Signal to Noise Ratio
(A-weighted)
(DAC to speaker outputs)
Speaker Supply Leakage current
Power Supply Rejection Ratio
(SPKVDD1/SPKVDD2)
SPKL/RVOL
Volume Gain
Volume Gain Step Size
Mute Attenuation
L/ROUTVOL
Volume Gain
Volume Gain Step Size
Mute Attenuation
Analogue Reference Levels
Mid-rail Reference Voltage
Microphone Bias
Bias Voltage
(Note that MBSEL=1 only
allowed if MICVDD is greater
than +2.40V )
Power Supply Rejection Ratio
Bias Current Source
Output Noise spectral density
@1KHz
CHARGE PUMP
Charge Pump switching
frequency
Flyback capacitor
(between CFB1 and CFB2 pins)
C
PSRR
CPFREQ
SYMBOL
FB
V
I
I
PSRR
VMID
SPKVDD
MICBIAS
SNR
MICBIAS
Vst
100mV ripple on MICVDD
100mV(peak-peak) 1kHz
100mV ripple on AVDD
at 2V
Guaranteed monotonic
Guaranteed monotonic
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
SPKVDD1=SPKVDD2
P
R
R
TEST CONDITIONS
All other supplies 0V
=3.3V; AVDD=1.8V;
100mV(peak-peak)
@1kHz, MBSEL=1
@1kHz, MBSEL=1
O
L
=5V; AVDD=1.8V;
L
2mA load current
2mA load current
=5V; AVDD=1.8V
P
=5V; AVDD=1.8V
1KHz, MBSEL=1
All other supplies
=320mW, R
= 8Ω, ref=2.0Vrms
= 8Ω, ref=2.8Vrms
MICVDD=2.5V
MICVDD=2.5V
O
disconnected
=1W, R
MBSEL=1
MBSEL=0
217Hz
=5V;
=5V;
L
= 8Ω,
L
= 8Ω,
1
-10%
-10%
–3%
MIN
-68
-68
82
5/6×AVDD
7/6×AVDD
AVDD/2
0.089
A
0.13
TYP
-61
-58
90
92
75
75
87
68
51
85
85
1
1
1
1
= +25
o
C, 1kHz signal, fs = 48kHz,
PP, August 2009, Rev 3.1
+10%
+10%
MAX
+3%
0.32
0.56
-50
-45
5
5
6
2
1
6
Pre-Production
μF
nV/√Hz
UNIT
MHz
mA
dB
dB
dB
dB
uA
uA
dB
dB
dB
dB
dB
dB
dB
dB
%
%
dB
V
V
V
10