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WM8944BECS/R Fiches technique(PDF) 10 Page - Cirrus Logic

No de pièce WM8944BECS/R
Description  Mono Low-Power CODEC with Video Buffer
PDF  165 Pages
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Fabricant  CIRRUS [Cirrus Logic]
Site Internet  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8944BECS/R Fiches technique(HTML) 10 Page - Cirrus Logic

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WM8944B
10
Rev 4.3
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.8V, DBVDD = LDOVDD = SPKVDD = 3.3V, LDOVOUT = 3.0V, GND = 0V,
TA = +25
oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Inputs (IN1, AUX)
Maximum input signal
level (changes in
proportion to
LDOVOUT)
Single-ended input
INPGA_VOL = 0dB
1.0
0
Vrms
dBV
Pseudo-differential input
INPGA_VOL = 0dB
0.7
-3.1
Vrms
dBV
Input resistance
(IN1/DMICDAT)
Input PGA path (+35.25dB)
4.5
k
Input PGA path (0dB)
105
Input PGA path (-12dB)
160
Output mixer path (0dB)
15
Output mixer path (-6dB)
30
Direct speaker (0dB)
10
Direct speaker (-6dB)
20
Input resistance
(AUX)
Input PGA path (All gain
settings)
96
k
Input capacitance
10
pF
Analogue Inputs Programmable Gain Amplifier (PGA)
Minimum
programmable gain
-12
dB
Maximum
programmable gain
35.25
dB
Gain step size
Guaranteed monotonic
0.75
dB
Mute attenuation
92
dB
Common Mode
Rejection Ratio
1kHz input
110
dB
Speaker Output Programmable Gain Amplifier (PGA)
Minimum
programmable gain
-57
dB
Maximum
programmable gain
6
dB
Gain step size
Guaranteed monotonic
1
dB
Mute attenuation
71
dB
ADC Input Path Performance (Input PGA to ADC)
SNR (A-weighted)
84
94
dB
THD
-1dBFS input
-83
-72
dB
THD+N
-1dBFS input
-77
-70
dB
PSRR (with respect to
LDOVDD)
217Hz, 100mV pk-pk
77
dB
1kHz, 100mV pk-pk
90



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