Advanced Multi-bit Delta Sigma Architecture
24-bit Conversion
Up to 192 kHz Sample Rates
114 dB Dynamic Range
-100 dB THD+N
Direct Stream Digital
On-chip 50 kHz Filter
Matched PCM and DSD Analog Output Levels
Selectable Digital Filters
Volume Control with 1 dB Step Size and Soft
Ramp
Low Clock-jitter Sensitivity
+5 V Analog Supply, +2.5 V Digital Supply
Separate 1.8 to 5 V Logic Supplies for the
Control & Serial Ports
®
(DSD™) Mode
Description
The CS4362A is a complete 6-channel digi tal-to-analog
system. This D/A system includes digital de-emphasis,
1 dB step size volume control, ATAPI channel mixing,
selectable fast and slow digital interpolation filters followed by an oversampled, multi-bit delta-sigma
modulator which includes mismatch shaping technology that eliminates distortion due to capacitor mismatch.
Following this stage is a multi-element switched capacitor stage and low-pass filter with differential analog
outputs.
The CS4362A also has a proprietary DSD processor
which allows for 50 kHz on-chip filtering without an intermediate decimation stage. The CS4362A is available
in a 48-pin LQFP package in both Commercial (-40°C to
+85°C) and Automotive grades (-40°C to +105°C). The
CDB4362A Customer Demonstration board is also
available for device evaluation and implementation suggestions. Please see “Ordering Information” on page 48
for complete details.
The CS4362A accepts PCM data at sample rates from
4 kHz to 216 kHz, DSD audio data, and delivers excellent sound quality. These featu res are ideal for multichannel audio systems including SACD players, A/V receivers, digital TV’s, mixing consoles, effects
processors, sound cards, and automotive audio
systems.
Table 8. Example Digital Volume Settings ................................................................................................ 41
CS4362A
DS617F25
1. PIN DESCRIPTION
DSDA2
DSDB1
DSDA1
VD
GND
MCLK
LRCK(DSD_EN)
SDIN1
SCLK
TST
SDIN2
TST
AOUTA1-
VLS
TST
TST
M3(DSD_SCLK)
DSDB3
DSDA3
DSDB2
48 47 46 45 44 43 42 41 40 39 38 37
1
2
3
4
5
6
7
8
9
10
11
2
1
13 14 15 16 17 18 19 20 21 22 23 24
CS4362A
MUTEC1
CS4362A
AOUTB1+
AOUTB1-
AOUTA1+
36
AOUTA2-
35
AOUTA2+
AOUTB2+
34
AOUTB2-
33
32
VA
GND
31
30
AOUTA3-
29
AOUTA3+
AOUTB3+
28
27
AOUTB3-
26
MUTEC2
25
MUTEC3
TST
SDIN3
M0(AD0/CS)
M1(SDA/CDIN)
M2(SCL/CCLK)
VQ
VLC
RST
FILT+
MUTEC5
MUTEC6
MUTEC4
Pin Name#Pin Description
VD4
GND5,31 Ground (Input) - Ground reference. Should be connected to analog ground.
MCLK6
LRCK7
SDIN1
SDIN2
SDIN3
SCLK9SerialClock (Input) - Serial clocks for the serial audio interface.
TST
RST
VA32
VLS43
VLC18
Digital Power (Input) - Positive power supply for the digital section. Refer to the Recommended Operating Conditions for appropriate voltages.
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. Table 1
illustrates several standard audio sample rates and the required master clock frequencies.
Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the
serial audio data line. The frequency of the left/right clock must be at the audio sample rate, Fs.
8
1113Serial Data Input (Input) - Input for two’s complement serial audio data.
10,12
14,4445Test - These pins need to be tied to analog ground.
Reset (Input) - The device enters a low power mode and all internal registers are reset to their
19
default settings when low.
Analog Power (Input) - Positive power supply for the analog section. Refer to the Recom-
mended Operating Conditions for appropriate voltages.
Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio
interface. Refer to the Recommended Operating Conditions for appropriate voltages.
Control Port Power (Input) - Determines the required signal level for the control port and hard-
ware mode configuration pins. Refer to the Recommended Operating Conditions for appropriate voltages.
6DS617F2
CS4362A
Pin Name#Pin Description
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be
capacitively coupled to analog ground, as shown in the Typical Connection Diagram. The nominal voltage level is specified in the Analog Characteristics and Specifications section. VQ pre-
DSD_SCLK42DSD Serial Clock (Input) - Serial clock for the Direct Stream Digital serial audio interface.
DSD_EN7
sents an appreciable source impedance and any current drawn from this pin will alter device
performance. However, VQ can be used to bias the analog circuitry assuming there is no AC
signal component and the DC current is less then the maximum specified in the Analog Characteristics and Specifications section.
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits. Requires the capacitive decoupling to analog ground as shown in the Typical Connection
Diagram.
39,40
38,37
35,36
Differential Analog Output (Output) - The full-scale differential analog output level is specified
34,33
in the Analog Characteristics specification table.
29,30
28,27
41
26
Mute Control (Output) - These pins are intended to be used as a control for external mute cir-
25
cuits on the line outputs to prevent the clicks and pops that can occur in any single supply sys-
24
tem. Use of Mute Control is not mandatory but recommended for designs requiring the absolute
23
minimum in extraneous clicks and pops.
22
17
16
Mode Selection (Input) - Determines the operational mode of the device as detailed in Table 6
15
and Table 7.
42
Serial Control Port Clock (Input) - Serial clock for the serial control port. Requires an external
pull-up resistor to the logic interface voltage in I²C
Diagram.
Serial Control Port Data (Input/Output) - SDA is a data I/O line in I²C Mode and is open drain,
requiring an external pull-up resistor to the logic interface voltage, as shown in the Typical Con-
nection Diagram; CDIN is the input data line for the control port interface in SPI™ mode.
Address Bit 0 (C) / Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C
17
Mode; CS
3
2
1
Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data.
48
47
46
DSD Enable (Input) - When held at logic ‘1’, the device will enter DSD Mode (Stand-Alone Mode
only).
is the chip select signal for SPI mode.
®
Mode as shown in the Typical Connection
DS617F27
CS4362A
2. CHARACTERISTICS AND SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
(GND = 0 V; all voltages with respect to ground.)
ParametersSymbol Min TypMaxUnits
DC Power Supply Analog Power
Digital Internal Power
Serial Data Port Interface Power
Control Port Interface Power
Ambient Operating Temperature (power applied)
Commercial Grade (-CQZ)
Automotive Grade (-DQZ)
VA
VD
VLS
VLC
T
A
4.75
2.37
1.71
1.71
-40
-40
5.0
2.5
5.0
5.0
5.25
2.63
5.25
5.25
-
-
+85
+105
V
V
V
V
°C
°C
ABSOLUTE MAXIMUM RATINGS
(GND = 0 V; all voltages with respect to ground.)
ParametersSymbolMinMaxUnits
DC Power Supply Analog Power
Digital Internal Power
Serial Data Port Interface Power
Control Port Interface Power
Input Current Any Pin Except SuppliesI
Digital Input Voltage Serial Data Port Interface
Control Port Interface
Ambient Operating Temperature (power applied)T
Storage TemperatureT
WARNING:Operation at or beyond these limits may result in permanent damage to the device. Normal operation
is not guaranteed at these extremes.
VLS
VLC
V
V
VA
VD
in
IND-S
IND-C
op
stg
-0.3
-0.3
-0.3
-0.3
-±10mA
-0.3
-0.3
-55125°C
-65150°C
6.0
3.2
6.0
6.0
VLS+ 0.4
VLC+ 0.4
V
V
V
V
V
V
8DS617F2
CS4362A
DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CQZ)
Test Conditions (unless otherwise specified): VA = VLS = VLC = 5 V; VD = 2.5 V; TA = 25°C; Full-Scale 997 Hz
input sine wave
“Typical Connection Diagram” on page 19; Measurement Bandwidth 10 Hz to 20 kHz.
Interchannel Gain Mismatch-0.1-dB
Gain Drift-100-ppm/°C
Analog Output
Full-scale Differential Output VoltageV
Output Impedance (Note 3)Z
Max DC Current Draw From an AOUT PinI
Min AC-load ResistanceR
Max Load CapacitanceC
Quiescent VoltageV
Max Current draw from V
(Note 1); Tested under max ac-load resistance; Valid with FILT+ and VQ capacitors as shown in
ParametersSymbolMinTypMaxUnit
16-bit A-weighted
(Note 2) Unweighted
(Note 2) 16-bit 0 dB
Q
Unweighted
0 dB
-20 dB
-60 dB
-20 dB
-60 dB
THD+N
FS
OUT
OUTmax
L
L
Q
I
QMAX
108
105
-
-
-
-
-
-
-
-
128%•V
A
-130-Ω
-1.0-mA
-3-kΩ
-100-pF
- 50%•VA-VDC
-10-µA
114
111
97
94
-100
-91
-51
-94
-74
-34
132%•V
-
-
-
-
-94
-
-45
-
-
-
A
136%•V
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Vpp
A
Notes:
1.One-half LSB of triangular PDF dither is added to data.
2.Performance limited by 16-bit quantization noise.
3.V
is tested under load RL and includes attenuation due to Z
FS
OUT
DS617F29
CS4362A
DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DQZ)
Test Conditions (unless otherwise specified): VA = 4.75 to 5.25 V; VLS = 1.71 to 5.25 V; VLC = 1.71 to 5.25 V; VD
= 2.37 to 2.63 V; T
tance; Valid with FILT+ and VQ capacitors as shown in “Typical Connection Diagram” on page 19; Measurement
Bandwidth 10 Hz to 20 kHz.
Interchannel Gain Mismatch-0.1-dB
Gain Drift-100-ppm/°C
Analog Output
Full-scale Differential Output VoltageV
Output Impedance (Note 3)Z
Max DC Current Draw From an AOUT PinI
Min AC-load ResistanceR
Max Load CapacitanceC
Quiescent VoltageV
Max Current draw from V
= -40°C to 85°C; Full-Scale 997 Hz input sine wave (Note 1); Tested under max ac-load resis-
A
ParametersSymbolMinTypMaxUnit
16-bit A-weighted
(Note 2) Unweighted
(Note 2) 16-bit 0 dB
Q
Unweighted
0 dB
-20 dB
-60 dB
-20 dB
-60 dB
THD+N
FS
OUT
OUTmax
L
L
Q
I
QMAX
105
102
-
-
-
-
-
-
-
-
128%•V
A
-130-Ω
-1.0-mA
-3-kΩ
-100-pF
- 50%•V
-10-µA
114
111
97
94
-100
-91
-51
-94
-74
-34
132%•V
-
-
-
-
-91
-
-42
-
-
-
A
A
136%•V
-VDC
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Vpp
A
10DS617F2
POWER AND THERMAL CHARACTERISTICS
ParametersSymbolMinTypMaxUnits
Power Supplies
Power Supply Current Normal Operation, VA= 5 V
(Note 4) VD= 2.5 V
(Note 5) Interface Current, VLC=5 V
VLS=5 V
(Note 6) Power-down State (all supplies)
Power Dissipation (Note 4)VA = 5V, VD = 2.5V
Normal Operation
(Note 6) Power-down
Package Thermal ResistanceMulti-layer
Two-layer
Power Supply Rejection Ratio (Note 7) (1 kHz)
(60 Hz)
Notes:
4.Current consumption increases with increasing FS within a given speed mode and is sign al-dependent.
Max values are based on highest FS and highest MCLK.
5.I
6.Power-down Mode is defined as RST
7.Valid with the recommended capacitor values on FILT+ and VQ as shown in Figure 5 and Figure 6.
measured with no external loading on the SDA pin.
LC
pin = Low with all clock and data lines held static.
I
A
I
D
I
LC
I
LS
I
pd
θ
JA
θ
JA
θ
JC
PSRR
CS4362A
-
-
-
-
-
-
-
-
-
-
-
-
60
16
2
84
200
340
1
48
65
15
60
40
65
22
-
-
-
390
-
-
-
-
-
-
mA
mA
µA
µA
µA
mW
mW
°C/Watt
°C/Watt
°C/Watt
dB
dB
DS617F211
CS4362A
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
The filter characteristics have been norma lized to th e sample rate (Fs) and can be referenced to the desired sample rate by multiplying the given characteristic by Fs.
See Note 12.
Parameter
Combined Digital and On-chip Analog Filter Response - Single-Speed Mode - 48 kHz
Passband (Note 9)to -0.01 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Combined Digital and On-chip Analog Filter Response - Double-Speed Mode - 96 kHz
Passband (Note 9)to -0.01 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Stop Band.583--Fs
Stop-band Attenuation(Note 10)80--dB
Group Delay-6.15/Fs-s
Combined Digital and On-chip Analog Filter Response - Quad-Speed Mode - 192 kHz
Passband (Note 9) to -0.01 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Stop Band.635--Fs
Stop-band Attenuation(Note 10)90--dB
Group Delay-7.1/Fs-s
to -3 dB corner
Fs = 48 kHz
to -3 dB corner
to -3 dB corner
0
0
-
-
-
0
0
0
0
Fast Roll-Off
-
-
-
-
-
-
-
-
-
.454
.499
±0.23
±0.14
±0.09
.430
.499
.105
.490
UnitMin Typ Max
Fs
Fs
dB
dB
dB
Fs
Fs
Fs
Fs
Notes:
8.Slow roll-off interpolation filter is only available in Software Mode.
9.Response is clock-dependent and will scale with Fs.
10. For Single-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs.
For Double-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs.
For Quad-Speed Mode, the Measurement Bandwidth is from stopband to 1.34 Fs.
11. De-emphasis is available only in Single-Speed Mode; only 44.1 kHz De-emphasis is available in Hardware Mode.
12. Amplitude vs. Frequency plots of this data are available in Section 7. “Filter Plots” on page 42.
12DS617F2
CS4362A
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
(CONTINUED)
Slow Roll-Off (Note 8)
Parameter
Single-Speed Mode - 48 kHz
Passband (Note 9)to -0.01 dB corner
to -3 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Stop Band.583--Fs
Stop-band Attenuation(Note 10)64--dB
Group Delay -7.8/Fs-s
De-emphasis Error (Note 11)Fs = 32 kHz
(Relative to 1 kHz)Fs = 44.1 kHz
Fs = 48 kHz
0
0
-
-
-
-
-
-
-
-
0.417
0.499
±0.36
±0.21
±0.14
Double-Speed Mode - 96 kHz
Passband (Note 9)to -0.01 dB corner
to -3 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Stop Band.792--Fs
Stop-band Attenuation(Note 10)70--dB
Group Delay-5.4/Fs-s
0
0
-
-
.296
.499
Quad-Speed Mode - 192 kHz
Passband (Note 9)to -0.01 dB corner
to -3 dB corner
Frequency Response 10 Hz to 20 kHz-0.01-+0.01dB
Stop Band.868--Fs
Stop-band Attenuation(Note 10)75--dB
Group Delay-6.6/Fs-s
0
0
-
-
.104
.481
UnitMinTypMax
Fs
Fs
dB
dB
dB
Fs
Fs
Fs
Fs
DSD COMBINED DIGITAL & ON-CHIP ANALOG FILTER RESPONSE
ParameterMinTypMaxUnit
DSD Processor mode
Passband (Note 9)to -3 dB corner0-50kHz
Frequency Response 10 Hz to 20 kHz-0.05-+0.05dB
Roll-off27--dB/Oct
Quad-speed Mode
LRCK Duty Cycle4555%
SCLK Duty Cycle4555%
SCLK High Timet
SCLK Low Timet
LRCK Edge to SCLK rising edget
SDIN Setup Time before SCLK rising edget
SDIN Hold Time after SCLK rising edget
Notes:
14. After powering up, RST
should be held low until after the power supplies and clocks are settled.
15. See Table 1 on page 21 for suggested MCLK frequencies.
F
F
F
sckh
sckl
lcks
ds
dh
s
s
s
4
50
100
8-ns
8-ns
5-ns
3-ns
5-ns
54
108
216
kHz
kHz
kHz
LRCK
SCLK
SDINx
t
lcks
t
ds
t
sckh
t
dh
MSB
Figure 1. Serial Audio Interface Timing
t
sckl
MSB-1
DS617F215
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