CS5331A

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 analog-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 (-10° to +70° C) and Automotive grades (- 40° to +85° C). Please refer to “Ordering Information” on page 16 for complete details. MCLK 4 Voltage Reference SCLK 2 LRCK 3 1 SDATA Serial Output Interface 8 LP Filter S/H DAC Digital Decimation Filter Comparator DAC 7 VA+ High Pass Filter Digital Decimation Filter Comparator AINL High Pass Filter AINR 5 S/H LP Filter AGND 6 http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2006 (All Rights Reserved) APRIL '06 DS138F5 CS5330A/31A 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 LIST OF FIGURES Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Typical Connection Diagram......................................................................................... 8 Data Output Timing-CS5330A .................................................................................... 10 Data Output Timing - CS5331A (I²S Compatible) ....................................................... 10 CS5330A/31A Initialization and Power-Down Sequence............................................ 12 CS5330A/31A Digital Filter Stopband Rejection......................................................... 13 CS5330A/31A Digital Filter Transition Band ............................................................... 13 CS5330A/31A Digital Filter Passband Ripple ............................................................. 13 CS5330A/31A Digital Filter Transition Band ............................................................... 13 LIST OF TABLES Table 1. Common Clock Frequencies......................................................................................... 9 2 DS138F5 CS5330A/31A 1. PIN DESCRIPTIONS SERIAL DATA OUTPUT SERIAL DATA CLOCK LEFT/RIGHT CLOCK MASTER CLOCK SDATA SCLK LRCK MCLK 1 2 3 4 8 7 6 5 AINL VA+ AGND AINR LEFT ANALOG INPUT ANALOG POWER ANALOG GROUND RIGHT ANALOG INPUT Pin Name SDATA # 1 Pin Description Audio Serial Data Output (Output) - Two’s complement MSB-first serial data is output on this 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 frequency from 32x to 64x the 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 left or right channel for output on SDATA. The LRCK frequency must be at the output sample rate. LRCK is an output clock if in Master Mode. Although the outputs of each channel are transmitted at different times, the two words in an LRCK cycle represent simultaneously sampled analog inputs. Master Clock Input (Input) - Source for the delta-sigma modulator sampling and digital filter clock. Sample rates and digital filter characteristics scale to the MCLK frequency. Analog Right Channel Input (Input) - Analog input for the right channel. Typically 4 Vpp for a full-scale input signal. Analog Ground (Input) - Analog ground reference. Positive Analog Power (Input) - Positive analog supply (Nominally +5 V). Analog Left Channel Input (Input) - Analog input for the left channel. Typically 4 Vpp for a fullscale input signal. SCLK 2 LRCK 3 MCLK AINR AGND VA+ AINL 4 5 6 7 8 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 specifications are derived from measurements taken at nominal supply voltages and TA = 25°C.) SPECIFIED OPERATING CONDITIONS (AGND = 0V, all voltages with respect to ground) Parameter Analog Supply Voltage Ambient Operating Temperature (Power Applied) KS, KSZ BS, DS Symbol VA+ TA Min 4.75 -10 -40 Typ 5.0 - Max 5.25 +70 +85 Unit V °C °C ABSOLUTE MAXIMUM RATINGS (AGND = 0V, all voltages with respect to ground.) (Note 1) Parameter Analog Supply Voltage Input Current, Any Pin Except Supplies Analog Input Voltage Digital Input Voltage Ambient Temperature (power applied) Storage Temperature Notes: 1. Operation at or beyond these 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. (Note 2) (Note 3) (Note 3) Symbol VA+ lin VINA VIND TA Tstg Min -0.3 -0.7 -0.7 -55 -65 Typ - Max +6.0 ±10 VA+0.7 VA+0.7 +125 +150 Unit V mA V V °C °C 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 Symbol Min Typ Max A-weighted unweighted 88 86 VIN ZIN 3.6 2.2 IA+ 94 92 -84 -72 -32 0.003 0 90 0.1 150 4.0 100 2.4 30 100 150 0.5 75 66 26 0.02 ±10 0 4.4 2.6 42 1000 220 5.25 - Parameter Dynamic Performance Dynamic Range Min 86 84 3.6 2.2 - 5331A-DSZ Typ 94 92 -84 -72 -32 0.003 0 90 0.1 150 4.0 100 2.4 30 100 150 0.5 50 Max 75 66 26 0.2 ±10 0 4.4 2.6 42 1000 220 5.25 - Unit dB dB dB dB dB % Degree dB dB % ppm/°C LSB Vpp kΩ V mA µA mW mW dB Total Harmonic Distortion + Noise (Note 4) -1 dB THD+N -20 dB -60 dB Total Harmonic Distortion -1 dB Interchannel Phase Deviation Interchannel Isolation (dc to 20 kHz) DC Accuracy Interchannel Gain Mismatch Gain Error Gain Drift Offset Error (Note 5) Analog Input Full-scale Input Voltage Input Impedance (Fs = 48 kHz) Input Bias Voltage Power Supplies Power Supply Current VA+ Power down THD Power Dissipation Normal Power down PSRR 50 Power Supply Rejection Ratio * Refer to Parameter Definitions at the end of this data sheet. 4. Referenced to typical full-scale input voltage. 5. Internal highpass filter removes offset. DS138F5 5 CS5330A/31A DIGITAL CHARACTERISTICS Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage at lo = -20 µA Low-Level Output Voltage at lo = 20 µA Input leakage Current Symbol VIH VIL VOH VOL Iin Min 2.4 VA-1.0 - Typ - Max 0.8 0.4 ±10.0 Unit V V V V µA DIGITAL FILTER CHARACTERISTICS (FS = 48 kHz) Parameter Passband Passband Ripple Stopband Stopband Attenuation Group Delay Group Delay Variation vs. Frequency High Pass Filter Characteristics Frequency Response: Phase Deviation Passband Ripple 6. Filter characteristics scale with output sample rate. 7. The analog modulator samples the input at 6.144 MHz for an output sample rate of 48 kHz. There is no rejection of input signals which are multiples of the sampling frequency (n x 6.144 MHz ±21.7 kHz where n = 0,1,2,3…). 8. Group delay for Fs = 48 kHz, tgd = 15/48 kHz = 312µs. -3 dB -0.1 dB @ 20 Hz (Note 6) (Note 6) 3.7 20 10 0 Hz Hz Degree dB (Note 6) (Note 7) (Note 8) tgd ∆tgd (0.05) (Note 6) Symbol Min 0.02 29 80 - Typ 15/Fs - Max 21.7 ±0.05 6115 0 Unit kHz dB kHz dB s µs 6 DS138F5 CS5330A/31A SWITCHING CHARACTERISTICS (Inputs: Logic 0 = 0V, Logic 1 = VA+; CL = 20 pF) Switching characteristics are guaranteed by characterization. Parameter Output Sample Rate MCLK Period MCLK Low MCLK High MCLK Period MCLK Low MCLK High MCLK Period MCLK Low MCLK High MASTER MODE SCLK falling to LRCK SCLK falling to SDATA valid SCLK Duty cycle SLAVE MODE LRCK duty cycle SCLK Period SCLK Pulse Width Low SCLK Pulse Width High SCLK falling to SDATA valid LRCK edge to MSB valid SCLK rising to LRCK edge delay LRCK edge to rising SCLK setup time 9. 1 64 Fs 1 - 15 ns 128 Fs 1 + 5 ns 256 Fs tclkw tclkl tclkh tdss tlrdss tslr1 tslr2 tmslr tsdo Symbol Fs MCLK/LRCK = 256 MCLK/LRCK = 256 MCLK/LRCK = 256 MCLK/LRCK = 384 MCLK/LRCK = 384 MCLK/LRCK = 384 MCLK/LRCK = 512 MCLK/LRCK = 512 MCLK/LRCK = 512 t t t Min 2 78 31 31 52 20 20 39 13 13 -10 -10 25 (Note 9) (Note 10) 20 20 (Note 11) Typ 50 50 - Max 50 1000 1000 1000 1000 1000 1000 1000 1000 1000 10 35 75 (Note 11) (Note 11) - Unit kHz ns ns ns ns ns ns ns ns ns ns ns % % ns ns ns ns ns ns ns clkw t clkl t clkh clkl clkw t t clkh clkl clkw t t clkh 10. 11. DS138F5 7 CS5330A/31A SCLK output t mslr LRCK output t sdo SDATA SDATA LRCK output t sdo SCLK output t mslr SCLK to SDATA LRCK - MASTER mode (CS5330A) t slr1 t slr2 SCLK input (SLAVE mode) t sclkl t sclkh SCLK to SDATA LRCK - MASTER mode (CS5331A) t slr1 t slr2 SCLK input (SLAVE mode) t sclkl t sclkh t sclkw LRCK input (SLAVE mode) t lrdss SDATA t dss t sclkw LRCK input (SLAVE mode) t dss SDATA MSB MSB-1 MSB-2 MSB MSB-1 SCLK to LRCK & SDATA - SLAVE mode (CS5330A) +5V Analog SCLK to LRCK & SDATA - SLAVE mode (CS5331A) 10 µF + 0.1 µF 7 VA+ 150 Ω Analog Input Circuits 150 Ω .47 µF ** 8 Audio Data Processor AINL MCLK SCLK LRCK SDATA 4 2 3 1 .01 µF CS5330A CS5331A 5 .01 µF AINR 1 kΩ 1 kΩ 1 kΩ 1 kΩ Timing Logic & Clock .47 µF ** * * Required for Master mode only ** Optional if analog input circuits biased to within ± 5% of CS5330A/CS5331A nominal input bias voltage AGND 6 47 kΩ Figure 1. Typical Connection Diagram 8 DS138F5 CS5330A/31A 3. GENERAL DESCRIPTION The CS5330A and CS5331A are 18-bit, 2-channel Analog-to-Digital Converters designed for digital audio applications. Each device uses two one-bit delta-sigma modulators which simultane-ously sample the analog input signals at 128 times the output sample rate (Fs). The resulting serial bit streams are digitally filtered, yielding pairs of 18-bit values. This technique yields nearly ideal conversion performance independent of input frequency and amplitude. The converters do not require difficult-to-design or expensive anti-alias filters and do not require external sampleand-hold amplifiers or a voltage reference. The CS5330A and CS5331A differ only in the output serial data format. These formats are dis-cussed in the following sections and shown in Figures 2 and 3. An on-chip voltage reference provides for a single-ended input signal range of 4.0 Vpp. Output data is available in serial form, coded as 2’s complement 18-bit numbers. Typical power con-sumption is 150 mW which can be further reduced to 0.5 mW using the Power-Down mode. For more information on delta-sigma modulation, see the references at the end of this data sheet. 3.1 System Design Very few external components are required to support the ADC. Normal power supply decou-pling components and a resistor and capacitor on each input for anti-aliasing are all that’s required, as shown in Figure 1. 3.1.1 Master Clock The master clock (MCLK) runs the digital filter and is used to generate the delta-sigma modula-tor sampling clock. Table 1 shows some common master clock frequencies. The output sample rate is equal to the frequency of the Left / Right Clock (LRCK). The serial nature of the output data results in the left and right data words being read at different times. However, the words within an LRCK cycle represent simultaneously sampled analog inputs. The serial clock (SCLK) shifts the digitized audio data from the internal data registers via the SDATA pin. 3.1.2 Serial Data Interface LRCK (kHz) 32 44 48 MCLK (MHz) 256x 8.1920 11.2896 12.2880 384x 12.2880 16.9344 18.4320 512x 16.3840 22.5792 24.5760 Table 1. Common Clock Frequencies The CS5330A and CS5331A can be operated in either Master mode, where SCLK and LRCK are outputs, or SLAVE mode, where SCLK and LRCK are inputs. 3.1.3 Master Mode In Master mode, SCLK and LRCK are outputs which are internally derived from MCLK. The CS5330A/31A will divide MCLK by 4 to generate a SCLK which is 64× Fs and by 256 to generate LRCK. The CS5330A and CS5331A can be placed in the Master mode with a 47 kohm pull-down resistor on the SDATA pin as shown in Figure 1. DS138F5 9 CS5330A/31A 3.1.4 Slave Mode LRCK and SCLK become inputs in SLAVE mode. LRCK must be externally derived from MCLK and be equal to Fs. The frequency of SCLK should be equal to 64x LRCK, though other frequencies are possible. MCLK frequencies of 256x, 384x, and 512x Fs are supported. The ratio of the applied MCLK to LRCK is automatically detected during power-up and internal dividers are set to generate the ap-propriate internal clocks. 3.1.5 CS5330A The CS5330A data output format is shown in Figure 2. Notice that the MSB is clocked by the transition of LRCK and the remaining seventeen data bits are clocked by the falling edge of SCLK. The data bits are valid during the rising edge of SCLK. 3.1.6 CS5331A The CS5331A data output format is shown in Figure 3. Notice the one SCLK period delay be-tween the LRCK transitions and the MSB of the data. The falling edges of SCLK cause the ADC to output the eighteen data bits. The data bits are valid during the rising edge of SCLK. LRCK is also inverted compared to the CS5330A interface. The CS5331A interface is compatible with I2S. LRCK 0 SCLK 1 2 17 18 19 20 21 22 30 31 0 1 2 17 18 19 20 21 22 23 31 0 1 SDATA 17 16 1 0 17 16 1 0 Left Audio Data Right Audio Data Figure 2. Data Output Timing-CS5330A LRCK 0 SCLK 1 2 3 18 19 20 21 22 30 31 0 1 2 3 18 19 20 21 22 23 31 0 1 SDATA 17 16 1 0 17 16 1 0 Left Audio Data Right Audio Data Figure 3. Data Output Timing - CS5331A (I²S Compatible) 10 DS138F5 CS5330A/31A 3.1.7 Analog Connections Figure 1 shows the analog input connections. The analog inputs are presented to the modula-tors via the AINR and AINL pins. Each analog input will accept a maximum of 4 Vpp centered at +2.4 V. The CS5330A/31A samples the analog inputs at 128 × Fs, 6.144 MHz for a 48 kHz sample-rate. The digital filter rejects all noise above 29 kHz except for frequencies right around 6.144 MHz ±21.7 kHz (and multiples of 6.144 MHz). Most audio signals do not have significant energy at 6.144 MHz. Nevertheless, a 150 Ω resistor in series with each analog input and a 10 nF capacitor across the inputs 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 must be avoided since these will degrade signal linearity. It is also important that the self-resonant frequency of the capacitor be well above the modulator sampling frequency. General purpose ceramics and film capacitors do not meet these requirements. However, NPO and COG capacitors are acceptable. If active circuitry precedes the ADC, it is recom-mended that the above RC filter is placed between the active circuitry and the AINR and AINL pins. The above example frequencies scale linearly with Fs. 3.1.8 High-Pass Filter The operational amplifiers in the input circuitry driving the CS5330A/31A may generate a small DC offset into the A/D converter. The CS5330A/31A includes a high pass filter after the decimator to remove any DC offset which could result in recording a DC level, possibly yielding "clicks" when switching between de-vices in a multichannel system. The characteristics of this first-order high pass filter are outlined in the “Digital Filter Characteristics” on page 6 3.1.9 Initialization and Power-Down The Initialization and Power-Down sequence is shown in Figure 4. Upon initial power-up, the digital filters and delta-sigma modulators are reset and the internal voltage reference is powered down. The device will remain in the Initial Power-Down mode until MCLK is presented. Once MCLK is available, the CS5330A/31A will make a master/slave mode decision based upon the presence/absence of a 47 kohm pull-down resistor on SDATA as shown in Figure 1. The master/slave decision is made during initial power-up as shown in Figure 4. In master mode, SCLK and LRCK are outputs where the MCLK/LRCK frequency ratio is 256x. LRCK will appear as an output 127 MCLK cycles into the initialization sequence. At this time, power is applied to the internal voltage reference and the analog inputs will move to approximately 2.4 Volts. SDATA is static low during the initialization and high pass filter settling sequence, which requires 11,265 LRCK cycles (235 ms at a 48 kHz output sample rate). In slave mode, SCLK and LRCK are inputs where the MCLK/LRCK frequency ratio must be either 256x, 384x, or 512x. Once the MCLK and LRCK are detected, MCLK occurrences are counted over one LRCK period to determine the MCLK/LRCK frequency ratio. At this time, power is applied to the internal voltage reference and the analog inputs will move to approximately 2.4 Volts. SDATA is static high during the initialization and high pass filter settling sequence, which requires 11,265 LRCK cycles (235 ms at a 48 kHz sample rate). DS138F5 11 CS5330A/31A USER: Apply Power Initia -D l Power own USER: Apply MCLK Mast Mode er Mast Mode er Power Down Mast / ave er Sl Deci on si Sl Mode ave Sl Mode ave Power Down USER: Apply MCLK an LRCK d MCLK/ LRCK R o ati Det minati er on USER: Re move 256 / / 512 384 MCLK,LRCK or h Bot Initia l on i zati -Hi pssfler gh a i settin t g -S DATA mut rele e ased USER: Re move MCLK MCLK/ LRCK R o ati i 256xoly s n Initia l on i zati -Hi pssfler gh a i settin t gs -S DATA mut rele e ased Di lOut gita put i gener ed s at Di lOut gita put i Gener ed s at Figure 4. CS5330A/31A Initialization and Power-Down Sequence The CS5330A and CS5331A have a Power-Down mode wherein typical consumption drops to 0.5 mW. This is initiated when a loss of clock is detected on either the LRCK or MCLK pins in Slave Mode, or the MCLK pin in Master Mode. The initialization sequence will begin when MCLK, and LRCK for slave mode, are restored. In slave mode power-down, the CS5330A and CS5331A will adapt to changes in MCLK/LRCK frequency ratio during the initialization sequence. It is recommended that clocks not be applied to the device prior to power supply settling. A reset circuit may be implemented by gating the MCLK signal. 3.1.10 Grounding and Power Supply Decoupling As with any high resolution converter, the ADC requires careful attention to power supply and grounding arrangements if its potential performance is to be realized. Figure 1 shows the recommended power arrangements with VA+ connected to a clean +5V supply. Decoupling capacitors should be as near to the ADC as possible, with the low value ceramic capacitor being the nearest. To minimize digital noise, connect the ADC digital outputs only to CMOS inputs. The printed circuit board layout should have separate analog and digital regions and ground planes. An evaluation board, CDB5330A or CDB5331A, is available which demonstrates the optimum layout and power supply arrangements, as well as allowing fast evaluation of the CS5330A and CS5331A. 12 DS138F5 CS5330A/31A 3.1.11 Digital Filter Figures 5 through 8 show the attenuation characteristics of the digital filter included in the ADC. The filter response scales linearly with sample rate. The x-axis has been normalized to Fs, and can be scaled by multiplying the x-axis by the system sample rate, i.e. 48 kHz. 0 -10 -20 -30 2 0 -2 Magnitude (dB) -4 -6 -8 -10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -50 -60 -70 -80 -90 -100 -110 -120 0.0 .46 .47 .48 .49 .50 .51 .52 .53 .54 Normalized Input Frequency Normalized Input Frequency Figure 5. CS5330A/31A Digital Filter Stopband Rejection Figure 6. CS5330A/31A Digital Filter Transition Band 0.05 0.04 0.03 0.02 0.01 0.00 -0.01 -0.02 -0.03 -0.04 -0.05 0 0.1 0.2 0.3 0.4 0.5 Normalized Input Frequency 0.0 -10.0 -20.0 -30.0 -40.0 -50.0 -60.0 -70.0 -80.0 -90.0 -100.0 0.40 0.45 0.50 0.60 0.65 0.70 Normalized Input Frequency Figure 7. CS5330A/31A Digital Filter Passband Ripple Figure 8. CS5330A/31A Digital Filter Transition Band DS138F5 13 CS5330A/31A 4. PARAMETER DEFINITIONS Resolution The total number of possible output codes is equal to 2 N, where N = the number of bits in the output word for each channel. Dynamic Range The ratio of the full-scale 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 measurement over the specified bandwidth made with a -60 dBFS signal. 60 dB is then added to the resulting measurement to refer the measurement to full scale. This technique ensures that the distortion components are below the noise level and do not effect the measurement. This measurement technique has been accepted by the Audio Engineering Society, AES171991, and the Electronic Industries Association of Japan, EIAJ CP-307. Total Harmonic Distortion+Noise (THD+N) The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified band width (typically 10 Hz to 20 kHz), including distortion components. Expressed in decibels. Measured at -1 and -20 dBFS as suggested in AES17-1991 Annex A. Total Harmonic Distortion The ratio of the rms sum of all harmonics up to 20 kHz to the rms value of the signal. Interchannel Phase Deviation The phase difference between the left and right channel sampling times. Interchannel Isolation A measure of crosstalk between the left and right channels. Measured for each channel at the converter’s output with the input under test AC grounded and a full-scale signal applied to the other channel. Units in decibels. Interchannel Gain Mismatch The gain difference between left and right channels. Units in decibels. Gain Error The deviation of the measured full-scale amplitude from the ideal full-scale amplitude value. Gain Drift The change in gain value with temperature. Units in ppm/°C. Bipolar Offset Error The deviation of the mid-scale transition (111...111 to 000...000) from the ideal. Units in LSBs. 14 DS138F5 CS5330A/31A 5. REFERENCES 1. Area Efficient Decimation Filter for an 18-Bit Delta- Sigma ADC, by K. Lin and J.J. Paulos. Paper presented at the 98th Convention of the Audio Engineering Society, February 1995. 2. An 18-Bit, 8-Pin Stereo Digital-to-Analog Converter, by J.J. Paulos, A.W. Krone, G.D. Kamath and S.T. Dupuie. Paper presented at the 97th Convention of the Audio Engineering Society, November 1994. 3. An 18-Bit Dual-Channel Oversampling Delta-Sigma A/D Converter, with 19-Bit Mono Application Example, by Clif Sanchez. Paper presented at the 87th Convention of the Audio Engineering Society, October 1989. 4. The Effects of Sampling Clock Jitter on Nyquist Sampling Analog-to-Digital Converters, and on Oversampling Delta Sigma ADC’s, by Steven Harris. Paper presented at the 87th Convention of the Audio Engineering Society, October 1989. 5. A Stereo 16-bit Delta-Sigma A/D Converter for Digital Audio, by D.R. Welland, B.P. Del Signore, E.J. Swanson, T. Tanaka, K. Hamashita, S. Hara, K. Takasuka. Paper presented at the 85th Convention of the Audio Engineering Society, November 1988. 6. PACKAGE DESCRIPTIONS A 8-Pin SOIC B E D C F H G I J DIM A B C D E F G H I J Millimeters MIN MAX 5.15 5.35 1.27 TYP 0 0.25 1.77 1.88 0.33 0.51 .15 0.25 0° 8° 5.18 5.4 0.48 0.76 7.67 8.1 Inches MIN 0.203 0.050 0 0.070 0.013 0.006 0° 0.204 0.019 0.302 MAX 0.210 TYP 0.010 0.074 0.020 0.010 8° 0.213 0.030 0.319 Note: The EIAJ Package is not a standard JEDEC package size. DS138F5 15 CS5330A/31A 7. ORDERING INFORMATION Product Description 8-pin, Stereo A/D Converter for Digital Audio 8-pin, Stereo A/D Converter for Digital Audio 8-pin, Stereo A/D Converter for Digital Audio 8-pin, Stereo A/D Converter for Digital Audio 8-pin, Stereo A/D Converter for Digital Audio 8-pin, Stereo A/D Converter for Digital Audio Package 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC Pb-Free NO NO YES YES NO YES Grade Temp Range Container Order # Bulk CS5330A-KS Tape & Reel CS5330A-KSR Bulk CS5331A-KS Tape & Reel CS5331A-KSR Bulk CS5330A-KSZ Tape & Reel CS5330A-KSZR Bulk CS5331A-KSZ Tape & Reel CS5331A-KSZR Bulk CS5330A-BS Tape & Reel CS5330A-BSR Bulk CS5331A-DSZ Tape & Reel CS5331A-DSZR CS5330A CS5331A CS5330A CS5331A CS5330A CS5331A Commercial -10° to +70° C Commercial -10° to +70° C Commercial -10° to +70° C Commercial -10° to +70° C Automotive -40° to +85° C Automotive -40° to +85° C 8. REVISION HISTORY Release F5 Changes Updated Ordering Information Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one nearest to you, go to www.cirrus.com. IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. 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IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. 16 DS138F5