WM8953 Datasheet, PDF (9/100 Pages) Wolfson Microelectronics plc – Low Power Stereo ADC with PLL and TDM Interface

Production Data
WM8953
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = 3.3V, TA = +25^oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
TEST CONDITIONS
Analogue Input Pin Impedances (LIN1, LIN2, LIN3, LIN4, RIN1, RIN2, RIN3, RIN4)
PGA Input Resistance LIN1, LIN3, RIN1 or RIN3
(PGA Gain = -16.5dB)
Note: this will be seen in
parallel with the
resistance of other
enabled input paths
from the same pin
LIN1, LIN3, RIN1 or RIN3
(PGA Gain = 0dB)
LIN1, LIN3, RIN1 or RIN3
(PGA Gain = +30dB)
LIN2, LIN4, RIN2 or RIN4
(Constant for all gains)
MIN TYP MAX UNIT
57
kΩ
33
kΩ
2
kΩ
65
kΩ
Line Input Resistance
Note: this will be seen in
parallel with the
resistance of other
enabled input paths
from the same pin
Input Capacitance
LIN2 or RIN2 to INMIXL or
INMIXR (-12dB)
LIN2 or RIN2 to INMIXL or
INMIXR (0dB)
LIN2 or RIN2 to INMIXL or
INMIXR (+6dB)
All analogue input pins
60
kΩ
15
kΩ
7.5
kΩ
10
pF
Test Conditions
DCVDD = 1.8V, DBVDD = 3.3V, AVDD = 3.3V, TA = +25^oC, 1kHz signal, fs = 48kHz,
PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
TEST CONDITIONS
Input Programmable Gain Amplifiers (PGAs) LIN12, LIN34, RIN12 and RIN34
Minimum Programmable Gain
Maximum Programmable Gain
Programmable Gain Step Size
Guaranteed monotonic
Mute Attenuation
Inputs disconnected
Common Mode Rejection Ratio
Single PGA in differential mode, gain = +30dB
(1kHz input)
Single PGA in differential mode, gain = 0dB
Single PGA in differential mode, gain = -16.5dB
Input Mixers INMIXL and INMIXR
Minimum Programmable Gain
PGA Outputs to INMIXL and INMIXR
Maximum Programmable Gain
PGA Outputs to INMIXL and INMIXR
Programmable Gain Step Size
PGA Outputs to INMIXL and INMIXR
Minimum Programmable Gain
Line Inputs to INMIXL and INMIXR
Maximum Programmable Gain
Line Inputs to INMIXL and INMIXR
Programmable Gain Step Size
Line Inputs to INMIXL and INMIXR
Mute attenuation
MIN TYP MAX UNIT
-16.5
dB
30
dB
1.5
dB
90
dB
60
dB
50
50
0
dB
+30
dB
30
dB
-12
dB
+6
dB
3
dB
95
dB
w
PD, January 2009, Rev 4.0
9