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WM8946ECS/R Datasheet(PDF) 10 Page - Wolfson Microelectronics plc

Part # WM8946ECS/R
Description  Stereo Low-Power CODEC with Video Buffer
PDF  175 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8946ECS/R Datasheet(HTML) 10 Page - Wolfson Microelectronics plc

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WM8946
Production Data
w
PD, July 2012, Rev 4.3
10
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 (IN1L, IN2L, IN1R, IN2R)
Maximum input signal
level (changes in
proportion to LDOVOUT)
Single-ended input
1.0
0
Vrms
dBV
Pseudo-differential input
0.7
-3.1
Vrms
dBV
Input resistance (IN1L,
IN1R)
+35.25dB gain
3.5
k
0dB gain
104
k
-12dB gain
166
k
Input resistance (IN2L,
IN2R)
All gain settings
96
k
Input capacitance
10
pF
Analogue Inputs (AUX1, AUX2)
Maximum input signal
level (changes in
proportion to LDOVOUT)
AUX1 or AUX2 enabled as audio
input
1.0
0
Vrms
dBV
Input resistance
Input mixer path (0dB)
100
k
Output mixer / direct speaker
path (0dB)
15
k
Output mixer / direct speaker
path (-6dB)
30
k
Input capacitance
10
pF
Analogue Inputs Programmable Gain Amplifiers (PGAs)
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 Amplifiers (PGAs)
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 PGAs to ADC)
SNR (A-weighted)
84
94
dB
THD
-1dBFS input
-83
-75
dB
THD+N
-1dBFS input
-77
-70
dB
Channel separation
(Left/Right)
95
dB
PSRR (with respect to
LDOVDD)
217Hz
1kHz
77
90
dB



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