CS42432-DMZ Cirrus Logic Inc, CS42432-DMZ Datasheet - Page 48

• Manufacturer Part Number: CS42432-DMZ
• Description: IC, AUDIO CODEC, 24BIT, 200KHZ, MQFP-52
• Manufacturer: Cirrus Logic Inc

Specifications of CS42432-DMZ

• Audio Codec Type: Stereo
• No. Of Adcs: 4
• No. Of Dacs: 6
• No. Of Input Channels: 4
• No. Of Output Channels: 6
• Adc / Dac Resolution: 24bit
• Sampling Rate: 200kSPS
• Ic Interface Type: I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

48
8. EXTERNAL FILTERS
8.1
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 mul-
tiples of the digital passband frequency (n
a recommended analog input filter that will attenuate any noise energy at 6.144 MHz, in addition to providing
the optimum source impedance for the modulators. Refer to
count passive input filters. The use of capacitors that have a large voltage coefficient (such as general-pur-
pose ceramics) must be avoided since these can degrade signal linearity
100 kΩ
100 kΩ
100 kΩ
4.7 μF
VA
100 kΩ
0.1 μF
Figure 19. Single-to-Differential Active Input Filter
10 kΩ
Figure 20. Single-Ended Active Input Filter
4.7 μF
100 kΩ
100 kΩ
-
+
470 pF
100 μF
C0G
VA
332 Ω
634 Ω
634 Ω
+
-
91 Ω
×
470 pF
C0G
6.144 MHz), where n=0,1,2,... Refer to
634 Ω
91 Ω
-
+
470 pF
C0G
4.7 μF
2700 pF
Figures 21
634 Ω
C0G
91 Ω
AIN1+,2+,3+,4+
AIN1-,2-,3-,4-
and
2700 pF
ADC1-2
C0G
22
for low-cost, low-component-
Figures 19
AINx+
AINx-
ADC1-2
CS42432
and
DS673F2
20
for