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101 dB, 192 kHz, Multi-Bit Audio A/D Converter

Features

 Advanced Multi-bit Delta-Sigma Architecture

 24-bit Conversion

 Supports All Audio Sample Rates Including

192 kHz

 101 dB Dynamic Range at 5 V

 -94 dB THD+N

 90 mW Power Consumption

 High-Pass Filter to Remove DC Offsets

 Analog/Digital Core Supplies from 3.3 V to 5 V

 Supports Logic Levels between 1.8 V and 5 V

 Auto-detect Mode Selection in Slave Mode

 Auto-Detect MCLK Divider

 Pin Compatible with CS5341

General Description

The CS5340 is a complete analog-to-digital converter

for digital audio systems. It performs sampling, analog-

to-digital conversion, and anti-alias filtering, generating

24-bit values for both left and right inputs in serial form

at sample rates up to 200 kHz per channel.

The CS5340 uses a 5th-order, multi-bit Delta-Sigma

modulator followed by digital filtering and decimation,

which removes the need for an external anti-alias filter.

The CS5340 is available in a 16-pin TSSOP package

for Commercial (-10° to +70° C) and Automotive grades

(-40° to +85° C). The CDB5340 Customer Demonstra-

tion Board is also available for device evaluation and

implementation suggestions. Please refer to “Ordering

Information” on page 22 for complete ordering

information.

The CS5340 is ideal for audio systems requiring wide

dynamic range, negligible distortion and low noise, such

as set-top boxes, DVD-karaoke players, DVD record-

ers, A/V receivers, and automotive applications.

High-Pass

Filter

Low-Latency

Digital Filters

High-Pass

Filter

Serial Port

3.3 V to 5 V

Internal

Reference

Voltages

Switch-Cap

ADC

3.3 V to 5 V

1.8 V to 5 V

Auto-detect

MCLK Divider

Slave Mode

Auto-detect

Master Clock

Reset

Single-Ended

Analog Input

Low-Latency

Digital Filters

Switch-Cap

ADC

Mode

Configuration

Single-Ended

Analog Input

SCLK

LRCK

SDOUT

FILT+

AINR

AINL

March '08

DS601F2

Confidential Draft

3/11/08

CS5340

Summary of content (22 pages)

PAGE 1
Confidential Draft 3/11/08 CS5340 101 dB, 192 kHz, Multi-Bit Audio A/D Converter Features General Description Advanced Multi-bit Delta-Sigma Architecture The CS5340 is a complete analog-to-digital converter for digital audio systems. It performs sampling, analogto-digital conversion, and anti-alias filtering, generating 24-bit values for both left and right inputs in serial form at sample rates up to 200 kHz per channel.
PAGE 2
Confidential Draft 3/11/08 CS5340 TABLE OF CONTENTS 1. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 4 SPECIFIED OPERATING CONDITIONS ............................................................................................... 4 ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 4 ANALOG CHARACTERISTICS - COMMERCIAL GRADE ...........................
PAGE 3
Confidential Draft 3/11/08 CS5340 LIST OF FIGURES Figure 1.Single-Speed Mode Stopband Rejection ...................................................................................... 8 Figure 2.Single-Speed Mode Stopband Rejection ...................................................................................... 8 Figure 3.Single-Speed Mode Transition Band (Detail) ................................................................................ 8 Figure 4.Single-Speed Mode Passband Ripple ............
PAGE 4
Confidential Draft 3/11/08 CS5340 1. CHARACTERISTICS AND SPECIFICATIONS (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TA = 25°C.) SPECIFIED OPERATING CONDITIONS (GND = 0 V, all voltages with respect to 0 V.) Parameter Power Supplies Ambient Operating Temperature Symbol Min Typ Max Unit Analog Digital Logic VA VD VL 3.
PAGE 5
Confidential Draft 3/11/08 CS5340 ANALOG CHARACTERISTICS - COMMERCIAL GRADE Test Conditions (unless otherwise specified): Input test signal is a 1 kHz sine wave; measurement bandwidth is 10 Hz to 20 kHz.
PAGE 6
Confidential Draft 3/11/08 CS5340 ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE Test Conditions (unless otherwise specified): Input test signal is a 1 kHz sine wave; measurement bandwidth is 10 Hz to 20 kHz.
PAGE 7
Confidential Draft 3/11/08 CS5340 DIGITAL FILTER CHARACTERISTICS Parameter Symbol Min Typ Max Unit (Note 7) 0 - 0.4895 Fs -0.035 - 0.035 dB (Note 7) 0.5687 - - Fs 70 - - dB - 12/Fs - s (Note 7) 0 - 0.4895 Fs -0.025 - 0.025 dB (Note 7) 0.5604 - - Fs 69 - - dB - 9/Fs - s 0 - 0.2604 Fs -0.025 - 0.025 dB Single-Speed Mode Passband (-0.
PAGE 8
0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 Amplitude (dB) Amplitude (dB) Confidential Draft 3/11/08 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 0.40 0.42 0.44 0 0.10 -1 0.08 -2 0.06 -3 -4 -5 -6 -7 0.56 0.58 0.60 0.02 0.00 -0.02 -0.04 -0.06 -9 -0.08 -0.10 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0 0.55 Amplitude (dB) 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.1 0.15 0.2 0.25 0.3 0.35 0.
PAGE 9
0 0.10 -1 0.08 -2 0.06 Amplitude (dB) Amplitude (dB) Confidential Draft 3/11/08 -3 -4 -5 -6 -7 0.04 0.02 0.00 -0.02 -0.04 -8 -0.06 -9 -0.08 -10 0.46 0.47 0.48 0.49 0.50 0.51 -0.10 0.00 0.05 0.52 Frequency (norm alized to Fs) 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 Figure 8. Double-Speed Mode Passband Ripple Amplitude (dB) Amplitude (dB) 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 0.1 0.
PAGE 10
Confidential Draft 3/11/08 CS5340 DC ELECTRICAL CHARACTERISTICS (GND = 0 V, all voltages with respect to 0 V. MCLK=12.288 MHz; Master Mode) Parameter Symbol Min Typ Max Unit Positive Analog Positive Digital Positive Logic VA VD VL 3.1 3.1 1.7 - 5.25 5.25 5.25 V V V VA = 5 V VA = 3.3 V VL,VD = 5 V VL,VD = 3.3 V IA IA ID ID - 21 18.2 15 9 25.5 22.5 18.5 10 mA mA mA mA VA = 5 V VL,VD=5 V IA ID - 1.5 0.4 - mA mA VL, VD, VA = 5 V VL, VD, VA = 3.3 V (Power-Down Mode) - - 180 90 9.
PAGE 11
Confidential Draft 3/11/08 CS5340 SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT (Logic "0" = GND = 0 V; Logic "1" = VL, CL = 20 pF) Parameter Symbol Min Typ Max Unit tclkw 39 - 45 ns 78 - 1953 ns 40 - 60 % -20 - 20 ns Double-Speed -20 - 20 ns Quad-Speed -8 - 8 ns - - 32 ns MCLK Specifications MCLK Period MCLK Pulse Duty Cycle Master Mode SCLK falling to LRCK Single-Speed SCLK falling to SDOUT valid. SCLK Duty Cycle.
PAGE 12
Confidential Draft 3/11/08 SCLK output CS5340 LRCK input t mslr t sclkw t slrd SCLK input LRCK output t stp thld t sdo MSB S DOUT MSB-1 Figure 13. Master Mode, Left-Justified SAI SDOUT MSB MSB-1 Figure 14. Slave Mode, Left-Justified SAI SCLK output LRCK input t mslr t slrd LRCK output tsclkw SCLK input t sdo MSB S DOUT Figure 15. Master Mode, I²S SAI 12 t stp thld SDOUT MSB Figure 16.
PAGE 13
Confidential Draft 3/11/08 CS5340 2. PIN DESCRIPTION M0 MCLK VL SDOUT GND VD SCLK LRCK Pin Name 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 M1 FILT+ REF_GND VA AINR VQ AINL RST # Pin Description M0 M1 1 16 Mode Selection (Input) - Determines the operational mode of the device. MCLK 2 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. VL 3 Logic Power (Input) - Positive power for the digital input/output.
PAGE 14
Confidential Draft 3/11/08 CS5340 3. TYPICAL CONNECTION DIAGRAM 3.3V to 5V + 1 µF 0.1 µF 0.1 µF + 1 µF 1.8 V to 5V ** 3.3V to 5V + 1 µF 5.1Ω 0.1 µF VA 0.1 µF VL VD FILT+ *** + 1 µF 0.1 µF REFGND + 1µF 0.
PAGE 15
Confidential Draft 3/11/08 CS5340 4. APPLICATIONS 4.1 Single-, Double-, and Quad-Speed Modes The CS5340 can support output sample rates from 2 kHz to 200 kHz. The proper speed mode can be determined by the desired output sample rate and the external MCLK/LRCK ratio, as shown in Table 1.
PAGE 16
Confidential Draft 3/11/08 4.2.1 CS5340 Operation as a Clock Master As a clock master, LRCK and SCLK operate as outputs. The left/right and serial clocks are internally derived from the master clock with the left/right clock equal to Fs and the serial clock equal to 64x Fs, as shown in Figure 18.
PAGE 17
Confidential Draft 3/11/08 4.2.3 CS5340 Master Clock The CS5340 requires a Master clock (MCLK) which runs the internal sampling circuits and digital filters. There is also an internal MCLK divider which is automatically activated based on the speed mode and frequency of the MCLK. Table 3 shows a listing of the external MCLK/LRCK ratios that are required. Table 4 lists some common audio output sample rates and the required MCLK frequency.
PAGE 18
Confidential Draft 3/11/08 4.4 CS5340 Power-Up Sequence Reliable power-up can be accomplished by keeping the device in reset until the power supplies, clocks and configuration pins are stable. It is also recommended that reset be enabled if the analog or digital supplies drop below the minimum specified operating voltages to prevent power-glitch-related issues. 4.5 Analog Connections The analog modulator samples the input at half of the MCLK frequency, or nominally 6.144 MHz.
PAGE 19
Confidential Draft 3/11/08 4.8 CS5340 Capacitor Size on the Reference Pin (FILT+) The CS5340 requires an external capacitance on the internal reference voltage pin, FILT+. The size of this decoupling capacitor will affect the low frequency distortion performance as shown in Figure 22, with larger capacitor values used to optimize low frequency distortion performance. This plot was taken using the CDB5340 evaluation platform, with the device running in Single-Speed Mode and VA=VD=VL=5 V. 1 uF 2.2 uF 3.
PAGE 20
Confidential Draft 3/11/08 CS5340 5. PARAMETER DEFINITIONS Dynamic Range The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified bandwidth. Dynamic Range is a signal-to-noise ratio measurement over the specified bandwidth made with a -60 dBFS signal. 60 dB is added to resulting measurement to refer the measurement to full-scale. This technique ensures that the distortion components are below the noise level and do not affect the measurement.
PAGE 21
Confidential Draft 3/11/08 CS5340 6. PACKAGE DIMENSIONS 16L TSSOP (4.4 mm BODY) PACKAGE DRAWING N D E11 A2 E A ∝ b2 e SIDE VIEW A1 END VIEW L SEATING PLANE 1 2 3 TOP VIEW DIM A A1 A2 b D E E1 e L µ INCHES NOM -0.004 0.0354 0.0096 0.1969 0.2519 0.1732 0.026 BSC 0.024 4° MIN -0.002 0.03346 0.00748 0.193 0.248 0.169 -0.020 0° MAX 0.043 0.006 0.037 0.012 0.201 0.256 0.177 -0.028 8° MIN -0.05 0.85 0.19 4.90 6.30 4.30 -0.50 0° MILLIMETERS NOM --0.90 0.245 5.00 6.40 4.40 0.65 BSC 0.
PAGE 22
Confidential Draft 3/11/08 CS5340 7. ORDERING INFORMATION Product Description Package Pb-Free Grade Temp Range Container Bulk 101 dB, 192 kHz, Multi-Bit CS5340 16-TSSOP YES Commercial -10° to +70° C Audio A/D Converter Tape & Reel Bulk 101 dB, 192 kHz, Multi-Bit CS5340 16-TSSOP YES Automotive -40° to +85° C Audio A/D Converter Tape & Reel CDB5340 CS5340 Evaluation Board - Order # CS5340-CZZ CS5340-CZZR CS5340-DZZ CS5340-DZZR CDB5340 8.