WM8352 Datasheet, PDF (16/336 Pages) Wolfson Microelectronics plc – Wolfson AudioPlus™ Stereo CODEC with Power Management

WM8352
Production Data
7 ELECTRICAL CHARACTERISTICS
7.1 HI-FI AUDIO CODEC
Test Conditions
DCVDD = 1.8V, AVDD = HPVDD = 3.3V, TA = +25^oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
UNIT
Microphone Preamp Inputs (IN1LP, IN1LN, IN1RP, IN1RN)
Full-scale Input Signal Level
(0dB) – note this changes with
AVDD
VINFS
1
V rms
0
dBV
Mic preamp equivalent input
noise
At
35.25dB
gain
150
μV
Input resistance
RMICIN
Gain set to 35.25dB
2.3
kΩ
Input resistance
RMICIN
Gain set to 0dB
64
kΩ
Input resistance
RMICIN
Gain set to -12dB
101
kΩ
Input Capacitance
CMICIN
2
pF
Recommended decoupling cap
CDECOUP
MIC Programmable Gain Amplifier (PGA)
0.33
μF
Programmable Gain
-12
35.25
dB
Programmable Gain Step Size
Monotonic
0.75
dB
Mute Attenuation
-90
dB
Selectable Input Gain Boost (0/+20dB)
Gain Boost
0
20
dB
Auxiliary Analogue Inputs (IN3L, IN3R)
Full-scale Input Signal Level
(0dB) – note this changes with
AVDD
VINFS
1.0
V rms
0
dBV
PGA gain range to summer
-12
+6
dB
PGA step size to summer
3
dB
Input Resistance
Input Capacitance
RAUXIN
CAUXIN
32
kΩ
10
pF
Analogue to Digital Converter (ADC)
Signal to Noise Ratio (Note 1, 2)
A-weighted, 0dB gain
86
95
dB
Total Harmonic Distortion
-2dBV Input
-75
-83
dB
(Note 4)
Digital to Analogue Converter (DAC) to Line-Out (OUT1L, OUT1R with 10kΩ / 50pF load)
Full-scale output
PGA gains set to 0dB
HPVDD/3.3
V rms
Signal to Noise Ratio (Note 1, 2)
SNR
A-weighted
90
95
dB
Total Harmonic Distortion
THD+N
RL = 10kΩ
-75
-81
dB
(Note 3)
full-scale signal
Channel Separation (Note 4)
1kHz signal
89
dB
Output Mixers
PGA gain range into mixer
-15
0
+6
dB
PGA gain step into mixer
3
dB
Analogue Output PGAs (OUT1L, OUT1R, OUT2L, OUT2R)
Programmable Gain range
-57
0
+6
dB
Programmable Gain step size
Monotonic
1
dB
Mute attenuation
1KHz, full scale
78
dB
signal
w
PD, February 2011, Rev 4.4
16