wm8350 Wolfson Microelectronics plc, wm8350 Datasheet - Page 16

• Manufacturer Part Number: wm8350
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8350
7
7.1
w
Test Conditions
DCVDD = 1.8V, AVDD = HPVDD = 3.3V, T
PARAMETER
Microphone Preamp Inputs (IN1LP, IN1LN, IN1RP, IN1RN)
Full-scale Input Signal Level
(0dB) – note this changes with
AVDD
Mic preamp equivalent input
noise
Input resistance
Input resistance
Input resistance
Input Capacitance
Recommended decoupling cap
MIC Programmable Gain Amplifier (PGA)
Programmable Gain
Programmable Gain Step Size
Mute Attenuation
Selectable Input Gain Boost (0/+20dB)
Gain Boost
Auxiliary Analogue Inputs (IN3L, IN3R)
Full-scale Input Signal Level
(0dB) – note this changes with
AVDD
PGA gain range to summer
PGA step size to summer
Input Resistance
Input Capacitance
Analogue to Digital Converter (ADC)
Signal to Noise Ratio (Note 1, 2)
Total Harmonic Distortion
(Note 4)
Digital to Analogue Converter (DAC) to Line-Out (OUT1L, OUT1R with 10kΩ / 50pF load)
Full-scale output
Signal to Noise Ratio (Note 1, 2)
Total Harmonic Distortion
(Note 3)
Channel Separation (Note 4)
Output Mixers
PGA gain range into mixer
PGA gain step into mixer
Analogue Output PGAs (OUT1L, OUT1R, OUT2L, OUT2R)
Programmable Gain range
Programmable Gain step size
Mute attenuation
ELECTRICAL CHARACTERISTICS
HI-FI AUDIO CODEC
SYMBOL
35.25dB
C
THD+N
R
C
R
R
R
C
V
V
SNR
DECOUP
gain
AUXIN
AUXIN
MICIN
MICIN
MICIN
MICIN
At
INFS
INFS
A
= +25
TEST CONDITIONS
o
Gain set to 35.25dB
C, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
Gain set to -12dB
PGA gains set to
A-weighted, 0dB
Gain set to 0dB
full-scale signal
1KHz, full scale
-2dBV Input
1kHz signal
A-weighted
Monotonic
Monotonic
R
L
signal
= 10kΩ
gain
0dB
MIN
-12
-12
-75
-75
-15
-57
86
90
0
HPVDD/3.3
TYP
0.33
0.75
150
101
2.3
-90
1.0
-83
-81
64
32
10
95
95
89
78
1
0
2
0
3
0
3
0
1
PD, June 2009, Rev 4.1
35.25
MAX
20
+6
+6
+6
Production Data
V rms
V rms
V rms
UNIT
dBV
dBV
μV
kΩ
kΩ
kΩ
pF
μF
dB
dB
dB
dB
dB
dB
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
16