Cirrus Logic AN285 User Manual
AN285
CS5333 to CS5343/4 Transition
1. INTRODUCTION
The CS5333 and CS5343/4 are complete stereo analog-to-digital converters for digital audio systems. These converters perform sampling, analog-to-digital conversion and anti-alias filtering, generating 24-bit values for both left
and right channels. These small, low-power converters are ideal for systems r equiring wide dynamic ran ge and low
noise such as set-top boxes, A/V receivers, DVD-karaoke players, DVD recorders, and automotive applications.
The CS5333 is no longer recommended for new designs, and the CS5343/4 is the suggested replacement.
This application note identifies the implementation differences between these two devices, including:
• Key specifications
• Pinout differences
• Startup mode selections
• System clocking
• Input filter topology
• Reference voltage
The CS5333 and CS5343/4 datasheets contain detailed information regarding device specifications, performance
and ordering information. Please reference the CS5333 and CS5343/4 datasheets while reading this document.
2. KEY SPECIFICATIONS
Table 1 shows a comparison of the key specifications of these two device families, and Table 2 shows the pin com-
parison between the CS5333 and the CS5343/4. Although these two devices are not pin compatible, they are very
similar in terms of overall functionality and feature set.
Parameter CS5333 CS5343/4 Units
Conversion 24 24 Bits
Dynamic Range (A-Weighted) 98 98 dB
THD+N -88 -90 dB
Analog Core Power Supply (VA) +1.8 to +3.3 +3.3 to 5 V
Digital Core Power Supply (VD) Powered from VA Powered from VA V
Digital Interface Power Supply (VL) +1.8 to +3.3 Powered from VA V
Typical Power ConsumptionAll supplies = +3.3 V 36 50 mW
Maximum Sample Rate 100 108 kHz
Package 16-pin TSSOP 10-pin TSSOP
T able 1. Comparison of Key Specifications
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Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
SEPTEMBER '05
AN285REV1
CS5333 CS5343/4 Description
Pin Number Pin Name Pin Number Pin Name
1 VL - - Logic Power
2 MCLK 4 MCLK Master Clock
3 SCLK 2 SCLK Serial Clock
4 SDATA 1 SDOUT Serial Data
5 VA 10 V A Power
6 GND 9 GND Ground Reference
7 LRCK 3 LRCK Left/Right Clock
8 DIV - - Speed Mode Select/MCLK Divider
9 DIF - - Digital Interface Format
10 TST - - Test Pin
1 1 FILT+ 5 FILT+ Full-Scale Voltage Reference
12 REF_GND - - Ground Reference
13 AINR 8 AINR Right Channel Analog Input
14 AINL 6 AINL Left Channel Analog Input
15 VQ 7 VQ Quiescent Voltage Reference
16 RST - - Reset
T able 2. Pin Comp atibility between the CS5333 and CS5343/4
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3. TYPICAL CONNECTION DIAGRAMS
Figures 1 and 2 are the typical connection diagrams for the CS5333 and the CS5343/4 respectively. These dia-
grams demonstrate optimal power arrangements and the options available with pull-up or pull-down resistors on various I/O pins for each device.
1.8 to 3.3 V
Supply
1.8 to 3.3 V
Supply
* All capacitors located
on the analog input lines
should be of the type
COG or equivalent.
**Optional if analog input
circuit is biased within
±5% of CS5333 nominal
bias voltage
1.0 µF
1.0 µF
Ω
150
Ω
150
+
+
**
**
0.47 µF
0.47 µF
0.1 µF
1
0.1 µF
14
0.01 µF
*
13
0.01 µF
*
VL
AINL
AINR
5
VA
CS5333
GND6TST
10
FILT+
REF_GND
VQ
RST
DIF
DIV
MCLK
LRCK
SCLK
SDATA
11
12
15
16
9
8
2
7
3
4
1.0 µF
+
1.0 µF
Configuration
Digital
Audio
Source
47k
Ω
+
Mode
Connect to:
• VL for Master Mode
• GND for Slave Mode
Figure 1. CS5333 Typical Connection Diagram
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