CS5351-KS Cirrus Logic Inc, CS5351-KS Datasheet - Page 24

• Manufacturer Part Number: CS5351-KS
• Description: A/D Converter (A-D) IC
• Manufacturer: Cirrus Logic Inc

Specifications of CS5351-KS

• Input Channels Per Adc: 2
• Mounting Type: Surface Mount
• No. Of Channels: 2
• Supply Voltage Min: 4.75V
• Operating Temperature Max: 70°C
• Peak Reflow Compatible (260 C): No
• Sample Rate: 192kSPS
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

7 ADDENDUM
The CS5351 and CS5361 family of analog-to-digi-
tal converters are functionally compatible and can
easily be interchanged with minimal modifications
to the input buffer circuitry.
Figure 25 shows an analog input buffer that pro-
vides anti-alias filtering, proper dc biasing, and op-
timum source impedance for the modulators. The
input buffer shown will work well with both the
CS5351 and the CS5361, merely by changing the
bill of materials.
24
Figure 25. CS5351/CS5361 Analog Input Buffer
In order to use this buffer design with the CS5351,
one would stuff the 0ohm resistors R19 and R22
and not populate R3 and R20. This will create a sin-
gle-ended input buffer (as shown in Figure 3) with
the unused differential input pin connected to the
quiescent voltage of the converter (VQ). Note that
in this configuration, it is unnecessary to have the
second op-amp and related components.
In order to use this buffer design with the CS5361,
one would stuff the 0ohm resistors R3 and R20 and
not populate R19 and R22. This will create a fully
differential analog input buffer.
CS5351
DS565PP2