CDB-43L21 Cirrus Logic Inc, CDB-43L21 Datasheet - Page 27

• Manufacturer Part Number: CDB-43L21
• Description: EVAL BOARD FOR CS43L21
• Manufacturer: Cirrus Logic Inc

Specifications of CDB-43L21

• Number Of Dac's: 2
• Number Of Bits: 24
• Outputs And Type: 2, Single Ended
• Sampling Rate (per Second): 96k
• Data Interface: I²C, SPI™
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 70°C
• Utilized Ic / Part: CS43L21
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 598-1282; CDB-43L21

DS723A1
4.3.7
Line-Level Outputs and Filtering
The CODEC contains on-chip buffer amplifiers capable of producing line level single-ended outputs on
AOUTA and AOUTB. These amplifiers are ground centered and do not have any DC offset. A load stabi-
lizer circuit, shown in the
nection Diagram (Hardware Mode)” on page
amplifiers to drive line or headphone outputs.
Also shown in the Typical Connection diagrams is the recommended passive output filter to support high-
er impedances such as those found on the inputs to operational amplifiers. “Rext”, shown in the typical
connection diagrams, is the input impedance of the receiving device.
The invert and digital gain controls may be used to provide phase and/or amplitude compensation for an
external filter.
The delta-sigma conversion process produces high frequency noise beyond the audio passband, most of
which is removed by the on-chip analog filters. The remaining out-of-band noise can be attenuated using
an off-chip low pass filter.
Software
Controls:
(after Limiter)
MAX[2:0]
MAX[2:0]
Limiter
Output
Input
Volume
“DAC Output Control (Address 08h)” on page
& AOUTB (Address 17h)” on page
“Typical Connection Diagram (Software Mode)” on page 9
ARATE[5:0]
Figure 11. Peak Detect & Limiter
ATTACK/RELEASE SOUND
CUSHION
10, is required on the analog outputs. This allows the DAC
49.
RRATE[5:0]
41,
“AOUTx Volume Control: AOUTA (Address 16h)
CUSH[2:0]
AOUTx_VOL[7:0] volume
adjusted manually when
control should NOT be
Limiter is enabled.
and the
CS43L21
“Typical Con-
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