Cirrus Logic CS4207 - Manual (Page 15)

DS880F4 15
CS4207
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE - DNZ)
(Test Conditions (unless otherwise specified): Input sine wave (relative to digital full-scale): 1 kHz through passive
input filter; VA_HP = VA; VL_HD = VL_IF = 3.3; VD = 1.8 V; T
A
= -40 to +85
C; Measurement Bandwidth is 10 Hz
to 20 kHz unless otherwise specified. Sample Frequency = 48 kHz)
4. Referred to the typical full-scale voltage. Applies to all THD+N and Dynamic Range values in the table.
5. Measured between [LINE/MIC]IN_[L/R]+ and [LINE/MIC]IN_[C/L/R]- for differential and pseudo-differ-
ential inputs, and between [LINE/MIC]IN_[L/R]+ and AGND for single-ended inputs.
VA, VA_REF = 5.0 V
(Differential/Single-ended)
VA, VA_REF = 3.3 V
(Differential/Single-ended)
Parameter
(Note 4) Min Typ Max Min Typ Max Unit
Line In to PGA to ADC (ADC1 or ADC2; differential perf. characteristics only valid for ADC2)
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
99/96
96/93 105/102
102/99
-
- 95/93
92/90 101/99
98/96
-
- dB
dB
PGA Setting: +12 dB A-weighted
unweighted
95/86
92/83 101/92
98/89
-
- 92/83
89/80 98/89
95/86 -
- dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dBFS
-60 dBFS
-
- -88/-88
-42/-39 -82/-82
-36/-33 -
- -95/-92
-38/-36 -89/-86
-32/-30 dB
dB
PGA Setting: +12 dB -1 dBFS - -88/-88 -82/-82 - -92/-86 -86/-80 dB
Mic In to PGA to ADC (+20 dB) (ADC1 or ADC2; differential perf. characteristics only valid for ADC2)
Dynamic Range
A-weighted
unweighted
86/78
83/75 92/84
89/81 -
- 83/75
80/72 89/81
86/78 -
- dB
dB
Total Harmonic Distortion + Noise
-1 dBFS - -89/-82 -83/-76 - -86/-78 -80/-72 dB
Other Analog Characteristics
DC Accuracy
Interchannel Gain Mismatch
- 0.2 - - 0.2 - dB
Gain Drift - ±100 - - ±100 - ppm/°C
Offset Error High Pass Filter On - 352 - - 352 - LSB
Interchannel Isolation - 90 - - 90 - dB
HP Amp to Analog Input Isolation
R
L
= 10 k

R
L
= 16

-
- 100
70
-
- -
- 100
70
-
- dB
dB
Full-scale Input Voltage - Line In/Mic In
(Differential Inputs)
PGA(0dB) 1.58•VA 1.66•VA 1.74•VA 1.58•VA 1.66•VA 1.74•VA Vpp
Full-scale Input Voltage - Line In PGA(0dB)
(Single-ended Inputs) PGA(+12dB)
0.79•VA 0.83•VA
0.21•VA 0.87•VA 0.79•VA 0.83•VA
0.21•VA 0.87•VA Vpp
Vpp
Full-scale Input Voltage - Mic In
PGA+Boost(0dB)
(Single-ended Inputs) PGA+Boost(+20dB)
0.79•VA 0.83•VA
0.08•VA 0.87•VA 0.79•VA 0.83•VA
0.08•VA 0.87•VA Vpp
Vpp
Input Impedance (Note 5)
Mic In (Differential or Pseudo-Diff)
Line In (Pseudo-Diff, PGA = -12/0/+12 dB)
Mic/Line In (Single-Ended, PGA = -12/0/+12 dB)
-
43.5
93/99/103
27/33/37
- -
43.5
93/99/103
27/33/37
-
k

k

k

Common Mode Rejection (Differential Inputs) - 60 - - 60 - dB