CS42435_07 Datasheet, PDF (18/57 Pages) Cirrus Logic – 108 dB, 192 kHz 4-In, 8-Out TDM CODEC

CS42435
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE)
(Test Conditions (unless otherwise specified): VA = 5 V±5%, VD = VLS = VLC = 3.3 V±5% and TA = -40 to +85×C.
Full-scale 997 Hz output sine wave (see Note 11) in Figure 25 on page 51 and Figure 25 on page 51; Measure-
ment Bandwidth is 10 Hz to 20 kHz.)
Parameter
Differential
Min
Typ
Max
Single-Ended
Min
Typ
Max
Unit
Fs = 48 kHz, 96 kHz, 192 kHz
Dynamic Range
18 to 24-Bit
A-weighted 100
108
-
97
105
-
dB
unweighted 97
105
-
94
102
-
dB
16-Bit
A-weighted
-
99
-
-
96
-
dB
unweighted
-
96
-
-
93
-
dB
Total Harmonic Distortion + Noise
18 to 24-Bit
0 dB
-
-20 dB
-
-60 dB
-
16-Bit
0 dB
-
-20 dB
-
-60 dB
-
-98
-90
-
-95
-87
dB
-85
-
-
-82
-
dB
-45
-
-
-42
-
dB
-93
-
-
-90
-
dB
-76
-
-
-73
-
dB
-36
-
-
-33
-
dB
Interchannel Isolation
(1 kHz)
-
100
-
-
100
-
dB
Analog Output
Full-Scale Output
1.210•VA 1.300•VA 1.392•VA 0.605•VA 0.650•VA 0.696•VA Vpp
Interchannel Gain Mismatch
-
0.1
0.25
-
0.1
0.25
dB
Gain Drift
-
±100
-
-
±100
-
ppm/°C
Output Impedance
-
100
-
-
100
-
Ω
DC Current draw from an AOUT pin
-
(Note 10)
-
10
-
-
10
μA
AC-Load Resistance (R_L) (Note 12)
3
-
-
3
-
-
kΩ
Load Capacitance (C_L) (Note 12)
-
-
100
-
-
100
pF
Notes:
10. Guaranteed by design. The DC current draw represents the allowed current draw from the AOUT pin
due to typical leakage through the electrolytic DC-blocking capacitors.
11. One-half LSB of triangular PDF dither is added to data.
12. Guaranteed by design. See Figure 3. R_L and C_L reflect the recommended minimum resistance and
maximum capacitance required for the internal op-amp's stability and signal integrity. In this circuit to-
pology, C_L will effectively move the dominant pole of the two-pole amp in the output stage. Increasing
this value beyond the recommended 100 pF can cause the internal op-amp to become unstable. See
“External Filters” on page 48 for a recommended output filter.
18
DS685F2