CIRRUS LOGIC CS5330A Service Manual
A
A
MCLK
CS5330A/31A
8-Pin, Stereo A/D Converter for Digital Audio
Features
Single +5 V Power Supply
18-Bit Resolution
94 dB Dynamic Range
Linear Phase Digital Anti-Alias Filtering
– 0.05dB Passband Ripple
– 80dB Stopband Rejection
Low Power Dissipation: 150 mW
– Power-Down Mode for Portable
Applications
Complete CMOS Stereo A/D System
– Delta-Sigma A/D Converters
– Digital Anti-Alias Filtering
– S/H Circuitry and Voltage Reference
Adjustable System Sampling Rates including
32kHz, 44.1 kHz & 48kHz
General Description
The CS5330A/31A is a complete stereo ana log-to- digital converter that performs anti- alias filtering, sampling
and analog-to-digital conversion generating 18-bit values for both left and right inputs in serial form. The
output sample rate can be infinitely adjusted between
2 kHz and 50 kHz.
The CS5330A/31A operates from a single +5 V supply
and requires only 150 mW for normal operation, making
it ideal for battery-powered applications.
The ADC uses delta-sigma modulation with 128X oversampling, followed by digital filtering and decimation,
which removes the need for an external anti-alias filter.
The linear-phase digital filter has a passband to
21.7 kHz, 0.05 dB passband ripple and >80 dB stopband rejection. The device also contains a high-pass filter to remove DC offsets.
The device is available in an 8-pin SOIC package in
both Commerical (
(- 40° to +85° C)
on page 16 for complete details.
-10° to +70° C) and Automotive grades
. Please refer to “Ordering Information”
SCLK
423
Voltage Reference
AINL
AINR
GND
http://www.cirrus.com
8
S/H
5
S/H
6
7
VA+
LP Filter
DAC
LP Filter
DAC
Digital Decimation
Comparator
Digital Decimation
Comparator
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
Serial Output Interface
Filter
Filter
LRCK
High
Pass
Filter
High
Pass
Filter
1
SDAT
APRIL '06
DS138F5
TABLE OF CONTENTS
1. PIN DESCRIPTIONS .................................... .... ... ... ... .... ...................................... .... ... ... ... ........ 3
2. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4
SPECIFIED OPERATING CONDITIONS................................................................................. 4
ABSOLUTE MAXIMUM RATINGS........................................................................................... 4
ANALOG INPUT CHARACTERISTICS.................................................................................... 5
DIGITAL CHARACTERISTICS............................... ... .... ... ........................................................ 6
DIGITAL FILTER CHARACTERISTICS ........................................... ... ... .... .............................. 6
SWITCHING CHARACTERISTICS........................... .... ... ........................................................ 7
3. GENERAL DESCRIPTION ............................................................... ... ... .... ... ... ... .... ... ... ........... 9
3.1 System Design .................................................................................................................. 9
3.1.1 Master Clock ......................................................................................................... 9
3.1.2 Serial Data Interface ............................................................................................ 9
3.1.3 Master Mode ......................................................................................................... 9
3.1.4 Slave Mode ......................................................................................................... 10
3.1.5 CS5330A ............................................................................................................. 10
3.1.6 CS5331A ............................................................................................................. 10
3.1.7 Analog Connections ............................................................................................ 11
3.1.8 High-Pass Filter .................................................................................................. 11
3.1.9 Initialization and Power-Down ............................................................................. 11
3.1.10 Grounding and Power Supply Decoupling ..................... ................................... 12
3.1.11 Digital Filter .... ... ... ... .... ... ... ... ............................................................................. 13
4. PARAMETER DEFINITIONS .................................................................................................. 14
5. REFERENCES ........................................................................................................................ 15
6. PACKAGE DESCRIPTIONS .................................................................................................. 15
7. ORDERING INFORMATION . ... ... .... ... ... .......................................... ... ... .... ............................ 16
8. REVISION HISTORY .............................................................................................................. 16
CS5330A/31A
LIST OF FIGURES
Figure 1. Typical Connection Diagram......................................................................................... 8
Figure 2. Data Output Timing-CS5330A.............................. ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... ... 10
Figure 3. Data Output Timing - CS5331A (I²S Compatible)....................................................... 10
Figure 4. CS5330A/31A Initialization and Power-Down Sequence............ .... ... ... ... .... ... ... ... ... ... 12
Figure 5. CS5330A/31A Digital Filter Stopband Rejection...................... ... .... ... ... ... .... ... ... ... ... ... 13
Figure 6. CS5330A/31A Digital Filter Transition Band............................................................... 13
Figure 7. CS5330A/31A Digital Filter Passband Ripple............................................................. 13
Figure 8. CS5330A/31A Digital Filter Transition Band............................................................... 13
LIST OF TABLES
Table 1. Common Clock Frequencies......................................................................................... 9
2 DS138F5
1. PIN DESCRIPTIONS
CS5330A/31A
Pin Name
SDATA
SCLK
LRCK
#
Pin Description
Audio Serial Data Output (Output) - Two’s complement MSB-first serial data is output on this
1
pin. A 47 kΩ resistor on this pin will place the CS5330A/31A into Master Mode.
Serial Data Clock (Input/Output) - SCLK is an input clock at any fr equency from 32 x to 64x the
2
output word rate. SCLK can also be an output clock at 64x if in the Master Mode. Data is
clocked out on the falling edge of SCLK.
Left/Right Clock (Input/Output) - LRCK selects the lef t or right channel for output on SDATA.
3
DS138F5 3
CS5330A/31A
2. CHARACTERISTICS AND SPECIFICATIONS
(All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical
performance characteristics and spe cif icat ion s ar e de riv e d from measurements taken at nominal supply voltages
and T
= 25°C.)
A
SPECIFIED OPERATING CONDITIONS
(AGND = 0V, all voltages with respect to ground)
Parameter Symbol Min Typ Max Unit
Analog Supply Voltage
Ambient Operating Temperature (Power Applied) KS, KSZ
BS, DS
VA+ 4.75 5.0 5.25 V
T
A
-10
-40
-
+70
-
+85
°C
°C
ABSOLUTE MAXIMUM RATINGS
(AGND = 0V, all voltages with respect to ground.) (Note 1)
Parameter Symbol Min Typ Max Unit
Analog Supply Voltage
Input Current, Any Pin Except Supplies (Note 2)
Analog Input Voltage (Note 3)
Digital Input Voltage (Note 3)
Ambient Temperature (power applied)
Storag e Temperature
VA+ -0.3 - +6.0 V
lin - - ±10 mA
INA -0.7 - VA+0.7 V
V
IND -0.7 - VA+0.7 V
V
TA -55 - +125 °C
Tstg -65 - +150 °C
Notes:
1. Operation at or beyond the se limits may result in permanent damage to the device. Normal operation
is not guaranteed at these extremes.
2. Any Pin except supplies. Transient current of up to +/- 100 mA on the analog input pins will not cause
SCR latch-up.
3. The maximum over/under voltage is limited by the input current.
4 DS138F5
CS5330A/31A
ANALOG INPUT CHARACTERISTICS
(-1 dBFS Input Sinewave, 997 Hz; Measurement Bandwidth is 10 Hz to 20 kHz unless otherwise specified; Logic
0 = 0V, Logic 1 = VD+)
5330A/31A-KS/KSZ
Parameter Symbol
Min Typ Max
Dynamic Performance
Dynamic Range
A-weighted
unweighted
88
86
Total Harmonic Distortion + Noise
(Note 4)
-1 dB
-20 dB
-60 dB
Total Harmonic Distortion -1 dB
Interchannel Phase Deviation
Interchannel Isolation (dc to 20 kHz)
THD+N
THD - 0.003 0.02 - 0.003 0.2 %
-
-
-
-0--0-Degree
-90--90-dB
DC Accuracy
Interchannel Gain Mismatch
Gain Error
Gain Drift
Offset Error (Note 5)
- 0.1 - - 0.1 - dB
--±10--±10%
- 150 - - 150 - ppm/°C
--0--0LSB
Analog Input
Full-scale Input Voltage
Input Impedance (Fs = 48 kHz)
Input Bias Voltage
VIN 3.6 4.0 4.4 3.6 4.0 4.4 Vpp
ZIN - 100 - - 100 - k
2.2 2.4 2.6 2.2 2.4 2.6 V
Power Supplies
Power Supply Current VA+
Power down
Power Dissipation Normal
Power down
Power Supply Rejection Ratio
IA+ -
-
-
-
PSRR - 50 - - 50 - dB
* Refer to Parameter Definitions at the end of this data sheet.
94
92
-84
-72
-32
30
100
150
0.5
-
-
75
66
26
42
1000
220
5.25
5331A-DSZ
Min Typ Max Unit
86
84
-
-
-
94
92
-84
-72
-32
75
66
26
-
-
dB
dB
dB
dB
dB
Ω
-
-
-
-
30
100
150
0.5
42
1000
220
5.25
mA
µA
mW
mW
4. Referenced to typical full-scale input voltage.
5. Internal highpass filter removes offset.
DS138F5 5
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