Cirrus Logic CS42L73 - Manual (Page 22)

22 DS882F1
CS42L73
ANALOG INPUT TO SERIAL PORT CHARACTERISTICS
Test Conditions (unless otherwise specified): Connections to the CS42L73 are shown in the “Typical Connection Diagram” on
page 17 ; Input is a 1-kHz sine wave through the passive input filter shown in Figure 1 ; GND = AGND = PGND = CPGND =
DGND = 0 V; all voltages are with respect to ground (GND); VA = 1.80 V; T
A
= +25 C; Measurement Bandwidth is 20 Hz to
20 kHz; Fs = 48 kHz (Note 10) ; ASP is used and is in slave mode with Fs
ext
= 48 kHz; MIC_PREAMPx = +10 dB, PGAxVOL =
0 dB; Mixer Attenuation and Digital Volume = 0 dB, Digital Mute is disabled.
Parameters (Note 2) (Note 11) Min Typ Max Units
LINEINA/LINEINB to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
85
82 91
88 -
- dB
dB
PGA Setting: +12 dB A-weighted
unweighted
78
75 84
81 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS
-60 dBFS
-
- -85
-28 -79
-22 dB
dB
PGA Setting: +12 dB -1 dBFS - -81 -75 dB
Common Mode Rejection (Note 12) - 40 - dB
MIC1/MIC2 to PREAMP to PGA to ADC, MIC_PREAMPx = +10 dB Gain
Dynamic Range
(Note 13)
PGA Setting: 0 dB A-weighted
unweighted
-
- 88
86 -
- dB
dB
PGA Setting: +12 dB A-weighted
unweighted
-
- 78
75 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS - -77 - dB
PGA Setting: +12 dB -1 dBFS - -64 - dB
Common Mode Rejection (Note 12) - 40 - dB
MIC1/MIC2 to PREAMP to PGA to ADC, MIC_PREAMPx = +20 dB Gain
Dynamic Range
(Note 13)
PGA Setting: 0 dB A-weighted
unweighted
-
- 82
79 -
- dB
dB
PGA Setting: +12 dB A-weighted
unweighted
-
- 70
67 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS - -71 - dB
PGA Setting: +12 dB -1 dBFS - -63 - dB
Common Mode Rejection (Note 12) - 40 - dB
DC Accuracy
Interchannel Gain Mismatch
- 0.2 - dB
Gain Drift - ±100 - ppm/°C
Offset Error - 352 - LSB