Cirrus Logic CS42L52 - Manual (Page 13)

DS680F2 13
CS42L52
3/1/13
ANALOG INPUT CHARACTERISTICS
Test Conditions (unless otherwise specified): Input sine wave (relative to digital full scale): 1 kHz through passive input filter; All
Supplies = VA; T
A
= +25
C; Sample Frequency = 48 kHz; Measurement Bandwidth is 20 Hz to 20 kHz unless otherwise speci-
fied; “Required Initialization Settings” on page 37 written on power up.
3. Measured with DAC delivering full-scale output into specified load.
4. Measured between analog input and AGND.
VA = 2.5V VA = 1.8V
Parameters Min Typ Max Min Typ Max Unit
Analog In to ADC (PGA bypassed)
Dynamic Range
A-weighted
unweighted
93
90 99
96 -
- 90
87 96
93 -
- dB
dB
Total Harmonic Distortion + Noise -1 dBFS
-20 dBFS
-60 dBFS
-
-
- -86
-76
-36 -80
-
-30
-
-
- -84
-73
-33 -78
-
-27
dB
dB
dB
Analog In to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
92
89 96
93 -
- 89
86 95
92 -
- dB
dB
PGA Setting: +12 dB A-weighted
unweighted
85
82 91
88 -
- 82
79 88
85 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS
-60 dBFS
-
- -88
-33 -82
-27 -
- -86
-32 -80
-26 dB
dB
PGA Setting: +12 dB -1 dBFS - -85 -79 - -83 -77 dB
Analog In to MIC Pre-Amp (+16 dB) to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
-
- 86
83 -
- -
- 83
80 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS - -76 - - -74 - dB
Analog In to MIC Pre-Amp (+32 dB) to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
-
- 76
73 -
- -
- 74
71 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-2 dBFS - -74 - - -71 - dB
Other Characteristics
DC Accuracy
Interchannel Gain Mismatch
- 0.2 - - 0.2 - dB
Gain Drift - ±100 - - ±100 - ppm/°C
Offset Error SDOUT Code with HPF On - 352 - - 352 - LSB
Input
Interchannel Isolation
- 90 - - 90 - dB
HP Amp to Analog Input Isolation R
L
= 10 k

(Note 3) R
L
= 16

-
- 100
70
-
- -
- 100
70
-
- dB
dB
Speaker Amp to Analog Input Isolation - 60 - - 60 - dB
Full-scale Input Voltage ADC
PGA (0 dB)
PGA (+12 dB)
MIC (+16 dB)
MIC (+32 dB)
0.73•VA
0.73•VA 0.769•VA
0.770•VA
0.194•VA
0.115•VA
0.019•VA
0.83•VA
0.83•VA 0.73•VA
0.73•VA 0.769•VA
0.770•VA
0.194•VA
0.115•VA
0.019•VA
0.83•VA
0.83•VA Vpp
Vpp
Vpp
Vpp
Vpp
Input Impedance (Note 4) ADC
PGA
MIC
-
-
- 20
39
50 -
-
- -
-
- 20
39
50 -
-
- k

k

k
