CS4271-DZZR Cirrus Logic Inc, CS4271-DZZR Datasheet - Page 32

• Manufacturer Part Number: CS4271-DZZR
• Description: IC CODEC 24BIT 114DB 28-TSSOP
• Manufacturer: Cirrus Logic Inc
• Type: Stereo Audior

Specifications of CS4271-DZZR

• Package / Case: 28-TSSOP
• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 108 / 114
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.1 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 192 KSPs
• Interface Type: Serial (I2C, SPI)
• Resolution: 24 bit
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 2 ADC, 2 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1003 - EVAL BOARD CS4271 STEREO CODEC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, 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
Analog Connections
Input Connections
AINL
AINR
10 µF
10 µF
10 kΩ
10 kΩ
Figure 12. CS4271 Recommended Analog Input Buffer
3.9 V
2.5 V
1.1 V
3.9 V
2.5 V
1.1 V
+
-
+
-
Figure 13. Full-Scale Analog Input
Full-Scale Input Level = 2.8 Vpp
470 pF
470 pF
C0G
C0G
634 Ω
91 Ω
634 Ω
91 Ω
-
+
1 µF
2700 pF
2700 pF
C0G
C0G
0.1 µF
AINB
AINA
CS4271
AINA
VQ2
VQ1
VQ3
AINB
CS4271
×
6.144 MHz) the digital
CS4271
DS592F1