CS4228A_03 Datasheet, PDF (5/32 Pages) Cirrus Logic – 24-Bit, 96 kHz Surround Sound Codec

CS4228A
ANALOG CHARACTERISTICS (Test conditions (unless otherwise specified): Input test signal is a
997 Hz sine wave at 0 dBFS; measurement bandwidth is 10 Hz to 20 kHz; test load R_L = 10 kΩ, C_L = 15 pF)
Base Rate Mode High Rate Mode
Parameter
Symbol Min Typ Max Min Typ Max Units
Analog Input Characteristics - Minimum gain setting (0 dB) Differential Input; unless otherwise specified.
Dynamic Range, -60 dBFS input (A weighted)
(unweighted)
91 97
-
91 97
-
dB
94
-
94
-
dB
Total Harmonic Distortion + Noise
(Note 4) THD+N - -88 -83 - -88 -83 dB
Interchannel Isolation
- 100 -
- 100 -
dB
Interchannel Gain Mismatch
- 0.1 -
- 0.1 -
dB
Offset Error (with high pass filter)
-
-
0
-
-
0
LSB
Full Scale Input Voltage (Differential):
5.24 5.66 6.09 5.24 5.66 6.09 Vp-p
Gain Drift
- 100 -
- 100 - ppm/°C
Input Resistance
10
-
-
10
-
-
kΩ
Input Capacitance
-
-
15
-
-
15
pF
A/D Decimation Filter Characteristics
Passband
(Note 5)
0.022 - 21.77 0.022 - 43.54 kHz
Passband Ripple
-
- 0.01 -
- 0.05 dB
Stopband
(Note 5)
30.0 - 6114 72.41 - 6071 kHz
Stopband Attenuation
(Note 6)
80
-
-
45
-
-
dB
Group Delay
Group Delay Variation vs. Frequency
High Pass Filter Characteristics
t_gd
- 17/Fs -
- 17/Fs -
s
∆ t_gd
-
-
0
-
-
0
µs
Frequency Response:
-3 dB (Note 7)
-0.13 dB
- 3.4 -
- 3.4 -
Hz
-
20
-
-
20
-
Hz
Phase Deviation
@ 20 Hz (Note 7)
-
10
-
-
10
- Degree
Passband Ripple
-
-
0
-
-
0
dB
Notes: 4. Referenced to typical full-scale differential input voltage (2 Vrms). Tested at -1 dBFS
5. Filter characteristics scale with output sample rate.
6. The analog modulator samples the input at 128 times Fs. For example, to obtain an output sample rate
of 48 kHz the input must be sampled at 6.144 MHz. There is no rejection of input signals which are
multiples of the sampling frequency (n × 6.144 MHz ±20.0 kHz where n = 0,1,2,3...).
7. High Pass Filter characteristics are specified for Fs=44.1 kHz.
5