CS4272-DZZR Cirrus Logic Inc, CS4272-DZZR Datasheet - Page 32

• Manufacturer Part Number: CS4272-DZZR
• Description: Audio CODECs IC 24Bit 192kHz 114dB Str Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CS4272-DZZR

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 192 KSPs
• Interface Type: Serial (I2S, SPI)
• Resolution: 24 bit
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-28
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 2 ADC, 2 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.4
5.4.1
The analog modulator samples the input at 6.144 MHz (MCLK=12.288 MHz). The digital filter will reject signals with-
in the stopband of the filter. However, there is no rejection for input signals which are (n
passband frequency, where n=0,1,2,... Refer to Figure 12 for a recommended 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 which have a large voltage coefficient (such as general purpose ceramics) must be avoided since
these can degrade signal linearity. Figure 13 shows the full-scale analog input levels.
32
AIN+
AIN-
Analog Connections
Input Connections
10 µF
10 µF
10 kΩ
10 kΩ
0.01 µF
3.9 V
2.5 V
1.1 V
3.9 V
2.5 V
Figure 12. CS4272 Recommended Analog Input Buffer
1.1 V
Full-Scale Input Level= (AIN+) - (AIN-)= 5.6 Vpp
Figure 13. Full-Scale Analog Input
+
-
-
+
470 pF
470 pF
C0G
C0G
634 Ω
634 Ω
91 Ω
91 Ω
1 µF
2700 pF
C0G
0.1 µF
AIN+
AIN-
CS4272
×
AIN+
AIN-
VCOM
6.144 MHz) the digital
CS4272
CS4272
DS593F1