CS42518-CQZR Cirrus Logic Inc, CS42518-CQZR Datasheet - Page 73

• Manufacturer Part Number: CS42518-CQZR
• Description: Audio CODECs IC 110dB 192kHz 8Ch Mlt-Ch CODEC
• Manufacturer: Cirrus Logic Inc

Specifications of CS42518-CQZR

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 8
• Conversion Rate: 192 KSPs
• Interface Type: Serial (I2C, SPI)
• Resolution: 24 bit
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-64
• Minimum Operating Temperature: - 10 C
• Number Of Channels: 2 ADC, 8 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS584F1
8. APPENDIX A: EXTERNAL FILTERS
8.1
8.2
ADC Input Filter
The analog modulator samples the input at 6.144 MHz (internal MCLK=12.288 MHz). The digital filter will
reject signals within the stopband of the filter. However, there is no rejection for input signals which are
(n
analog input buffer that will attenuate any noise energy at 6.144 MHz, in addition to providing the optimum
source impedance for the modulators. The use of capacitors that have a large voltage coefficient (such as
general-purpose ceramics) must be avoided since these can degrade signal linearity.
DAC Output Filter
The CS42518 is a linear phase design and does not include phase or amplitude compensation for an exter-
nal filter. Therefore, the DAC system phase and amplitude response will be dependent on the external an-
alog circuitry.
×
6.144 MHz) the digital passband frequency, where n=0,1,2,... Refer to
AINL
AINR
AOUT +
AOUT -
100 k
100 k
Ω
Ω
3.32 k
3.32 k
2.8 k
2.8 k
Figure 25. Recommended Analog Output Buffer
Ω
Ω
100
Ω
100
Ω
V A
Figure 24. Recommended Analog Input Buffer
V A
µ
µ
F
F
5.49 k
1.65 k
5800 pF
1800 pF
C0G
C0G
0.1
0.1
10 k
10 k
µ
µ
F
F
Ω
Ω
Ω
Ω
-
+
-
+
470 pF
100
470 pF
100
C0G
C0G
µ
2.94 k
1.87 k
µ
F
887
F
332
332
634
634
634
Ω
634
Ω
Ω
91
91
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
6.19 k
22
-
+
-
+
+
470 pF
-
470 pF
C0G
C0G
µ
Ω
F
1200 pF
390 pF
C0G
C0G
634
634
91
91
Ω
Ω
Ω
Ω
22
2700 pF
2700 pF
µ
C0G
C0G
F
47.5 k
1 k
Ω
A INR1+
A INL1+
A INL1-
A INR1-
Ω
Figure 24
for a recommended
Analog
Out
CS42518
73