CS4228 Datasheet, PDF (4/30 Pages) Cirrus Logic – 24-Bit, 96 kHz Surround Sound Codec

CS4228
CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS (Unless otherwise specified T_A = 25°C; VA = +5V, VD = VL = +3.3V;
Full Scale Input Sine wave, 1kHz; Fs = 44.1 kHz BRM, 96 kHz HRM; Measurement Bandwidth is 20 Hz to 20 kHz;
Local components as shown in "Recommended Connection Diagram"; SPI control mode, Left Justified serial for-
mat, MCLK = 256 Fs BRM, 128 Fs HRM, SCLK = 64 Fs)
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.
ADC Resolution
Stereo Audio channels
16
-
24 16
24 Bits
Total Harmonic Distortion
THD
- 0.003 -
- 0.003 -
%
Dynamic Range
(A weighted)
(unweighted)
TBD 102 - TBD 102 -
dB
-
99
- TBD 99
-
dB
Total Harmonic Distortion + Noise -1dB (Note 1) THD+N - -90 TBD - -90 TBD dB
Interchannel Isolation
-
90
-
-
90
-
dB
Interchannel Gain Mismatch
- 0.1 -
- 0.1 -
dB
Offset Error (with high pass filter)
-
-
0
-
-
0
LSB
Full Scale Input Voltage (Differential):
5.66
5.66
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 2)
0.02 - 20.0 0.02 -
40
kHz
Passband Ripple
-
- 0.01 -
- 0.05 dB
Stopband
(Note 2)
27.56 - 5617 66.53 - 5578 kHz
Stopband Attenuation
(Note 3)
80
-
-
45
-
-
dB
Group Delay
(Note 4) t_gd
- 15/Fs -
- 15/Fs -
s
Group Delay Variation vs. Frequency
∆ t_gd
-
-
0
-
-
0
µs
High Pass Filter Characteristics
Frequency Response:
-3 dB (Note 2)
-0.13 dB
- 3.4 -
- 3.4 -
Hz
-
20
-
-
20
-
Hz
Phase Deviation
@ 20 Hz
(Note 2)
-
10
-
-
10
- Degree
Passband Ripple
-
-
0
-
-
0
dB
Notes: 1. Referenced to typical full-scale differential input voltage (2 Vrms).
2. Filter characteristics scale with output sample rate.
3. The analog modulator samples the input at 5.6448 MHz for an output sample rate of 44.1 kHz. There is
no rejection of input signals which are multiples of the sampling frequency (n × 5.6448 MHz ±20.0 kHz
where n = 0,1,2,3...).
4. Group delay for Fs = 44.1 kHz, t_gd = 15/44.1 kHz = 340 µs. Fs = sample rate.
Specifications are subject to change without notice
4
DS307PP1