CS4228A Datasheet, PDF (4/32 Pages) Cirrus Logic – 24-Bit, 96 kHz Surround Sound Codec

CS4228A
1. CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS (Unless otherwise specified T_A = 25° C; VA = VD = VL = +5 V; Full
Scale Input Sine wave, 984.375 Hz; Fs = 48 kHz BRM, 96 kHz HRM; Measurement Bandwidth is 20 Hz to 20 kHz;
Local components as shown in Figure 5; SPI control mode, Left Justified serial format, MCLK = 256 x Fs for BRM,
128 x Fs for HRM, SCLK = 64 x 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.
Dynamic Range, -60 dBFS input (A weighted)
(unweighted)
90 97
-
90 97
-
dB
94
-
94
-
dB
Total Harmonic Distortion + Noise
(Note 1) ^{THD+N -}
-95 -88
-
-95 -88
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 (Note 2)
Passband
(Note 3)
0.022 - 21.77 0.022 - 43.54 kHz
Passband Ripple
-
- 0.01 -
- 0.05 dB
Stopband
(Note 3)
30.0 - 6114 72.41 - 6071 kHz
Stopband Attenuation
(Note 4)
80
-
-
45
-
-
dB
Group Delay
Group Delay Variation vs. Frequency
High Pass Filter Characteristics (Note 2)
t_gd
- TBD -
- TBD -
s
∆ t_gd
-
-
0
-
-
0
µs
Frequency Response:
-3 dB (Note 5)
-0.13 dB
- 3.4 -
- 3.4 -
Hz
-
20
-
-
20
-
Hz
Phase Deviation
@ 20 Hz
(Note 5)
-
10
-
-
10
- Degree
Passband Ripple
-
-
0
-
-
0
dB
Notes: 1. Referenced to typical full-scale differential input voltage (2 Vrms), Tested with -1 dBFS input.
2. Filter response is not tested but is guaranteed by design.
3. Filter characteristics scale with output sample rate.
4. The analog modulator samples the input at 128 times Fs. For example, input the sample rate is
6.144 MHz for an output sample rate of 48 kHz. 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...).
5. High Pass Filter characteristics are specified for Fs=44.1 KHz.
Specifications are subject to change without notice
4
DS511PP1