CS4382A-CQZ Cirrus Logic Inc, CS4382A-CQZ Datasheet - Page 24

• Manufacturer Part Number: CS4382A-CQZ
• Description: IC DAC 8CH 114DB 192KHZ 48LQFP
• Manufacturer: Cirrus Logic Inc

Specifications of CS4382A-CQZ

• Package / Case: 48-LQFP
• Number Of Bits: 24
• Data Interface: Serial
• Number Of Converters: 8
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 680mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Conversion Rate: 192 KSPS
• Resolution: 24 bit
• Interface Type: Serial
• Operating Supply Voltage: 5 V
• Operating Temperature Range: + 85 C
• Maximum Power Dissipation: 390 mW
• Mounting Style: SMD/SMT
• Number Of Dac Outputs: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1524 - BOARD EVAL FOR CS4382A DAC
• Settling Time: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1061

24
4.4
4.5
4.6
SDINx
SDINx
LRCK
SCLK
LRCK
SCLK
1 0
1 0
Oversampling Modes
The CS4382A operates in one of three oversampling modes based on the input sample rate. Mode selection
is determined by the DSD_EN, M3, and M2 pins in Hardware Mode or the FM bits in Software Mode. Single-
speed mode supports input sample rates up to 50 kHz and uses a 128x oversampling ratio. Double-speed
Mode supports input sample rates up to 100 kHz and uses an oversampling ratio of 64x. Quad-speed Mode
supports input sample rates up to 200 kHz and uses an oversampling ratio of 32x.
Interpolation Filter
To accommodate the increasingly complex requirements of digital audio systems, the CS4382A incorpo-
rates selectable interpolation filters for each mode of operation. A “fast” and a “slow” roll-off filter is available
in each of Single, Double, and Quad-Speed modes. These filters have been designed to accommodate a
variety of musical tastes and styles. The FILT_SEL bit is used to select which filter is used (see the
Plots” on page 42
When in Hardware Mode, only the “fast” roll-off filter is available.
Filter specifications can be found in
De-emphasis
The CS4382A includes on-chip digital de-emphasis filters. The de-emphasis feature is included to accom-
modate older audio recordings that utilize pre-emphasis equalization as a means of noise reduction.
Figure 13
portionally with changes in sample rate (Fs) if the input sample rate does not match the coefficient which
has been selected.
19 18
shows the de-emphasis curve. The frequency response of the de-emphasis curve will scale pro-
17 16
17 16
15 14 13 12 11 10
15 14 13 12 11 10
for more details).
Left Channel
32 clocks
Left Channel
32 clocks
Figure 12. Format 5 - Right-Justified 18-bit Data
Figure 11. Format 4 - Right-Justified 20-bit Data
9 8 7
9 8 7
Section
6 5 4 3 2 1 0
6 5 4 3 2 1 0
2, and filter response plots can be found in
19 18
17 16
17 16
15 14 13 12 11 10
15 14 13 12 11 10
Right Channel
Right Channel
9 8 7
9 8 7
6 5 4 3 2 1 0
6 5 4 3 2 1 0
Figures 20
CS4382A
DS618F2
to 43.
“Filter