CS4245 Datasheet, PDF (14/54 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC

CS4245
ADC ANALOG CHARACTERISTICS (cont)
Microphone Level Inputs
Parameter
Symbol
Min
Typ
Max
Unit
Dynamic Performance for VA = 5 V
Dynamic Range
PGA Setting: -12 dB to 0 dB
A-weighted
unweighted
77
83
74
80
-
dB
-
dB
PGA Setting: +12 dB
A-weighted
65
71
unweighted
62
68
Total Harmonic Distortion + Noise (Note 11)
THD+N
-
dB
-
dB
PGA Setting: -12 dB to 0 dB
-1 dB
-20 dB
-60 dB
-
-80
-74
dB
-
-60
-
dB
-
-20
-
dB
PGA Setting: +12 dB
-1 dB
Dynamic Performance for VA = 3.3 V
Dynamic Range
PGA Setting: -12 dB to 0 dB
A-weighted
unweighted
-
-68
77
83
74
80
PGA Setting: +12 dB
A-weighted
65
71
unweighted
62
68
Total Harmonic Distortion + Noise (Note 11)
THD+N
-
dB
-
dB
-
dB
-
dB
-
dB
PGA Setting: -12 dB to 0 dB
-1 dB
-20 dB
-60 dB
-
-80
-74
dB
-
-60
-
dB
-
-20
-
dB
PGA Setting: +12 dB
-1 dB
Interchannel Isolation
Microphone Level Input Characteristics
Full-scale Input Voltage
Input Impedance
(Note 13)
-
-68
-
dB
-
30
-
dB
0.013*VA 0.014*VA 0.015*VA V_pp
-
100
-
kΩ
11. Referred to the typical line level full-scale input voltage
12. Valid for Double and Quad Speed Modes only.
13. Valid when the microphone level inputs are selected.
14