CS4812 查看數據表（PDF） - Cirrus Logic
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CS4812 Datasheet PDF : 36 Pages
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CS4812
1. CHARACTERISTICS AND SPECIFICATIONS
ADC CHARACTERISTICS (TA = 25°C; VA, VD = + 5V; -1 dB Full Scale Input Sine wave,
997 Hz; Fs = 48 kHz; XTI = 12.288 MHz (PLL disabled). Measurement Bandwidth is 20 Hz to 20 kHz.)
Parameters
Symbol Min Typ Max Units
Analog Input Characteristics
ADC Conversion
Stereo Audio channels
16
-
24
Bits
Dynamic Range
(A weighted, Note 5)
(unweighted, Note 5)
93
100
-
dB
90
97
-
dB
Total Harmonic Distortion + Noise
(PLL enabled)
(Note 1,5) THD+N
-
-92
-87
dB
(Note 1,2,5)
-
-92
-
Interchannel Isolation
-
90
-
dB
Interchannel Gain Mismatch
-
0.1
-
dB
Offset Error (with high pass filter enabled)
(Note 6)
-
-
0
LSB
Full Scale Input Voltage (Differential)
Gain Drift
(Note 2)
1.9
2.0
2.1
Vrms
-
100
-
ppm/°C
Input Resistance
10
-
-
kΩ
Input Capacitance
-
-
15
pF
CMOUT Output Voltage
-
2.3
-
V
Common Mode Rejection Ratio
(Note 2) CMRR
60
dB
Group Delay (Fs = Output Sample Rate)
Group Delay Variation vs. Frequency
High Pass Filter Characteristics
(Note 4)
tgd
∆tgd
-
15/Fs
-
s
-
-
0
µs
Frequency Response
-3dB (Note 3)
-0.14dB (Note 3)
-
3.7
-
Hz
-
20
-
Hz
Phase Deviation
@ 20 Hz (Note 3)
-
10
-
Degree
Passband Ripple
-
-
0
dB
Notes: 1. Referenced to typical full-scale differential input voltage (2 Vrms).
2. Bench tested only.
3. Filter characteristics scale with output sample rate.
4. Group delay for Fs = 48 kHz, tgd = 15/48 kHz = 313 µs.
5. Measured using differential analog input circuit, see Figure 10.
6. Filter Response is not tested but guaranteed by design.
4
DS291PP3
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