CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 15

• Manufacturer Part Number: CDB42L55
• Description: Eval Bd Ultra Low Power Stereo Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L55

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42L55
• Primary Attributes: 2 Stereo Analog Inputs, Stereo Line and Headphone Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: GUI, USB, RS232, I2C Interfaces, USB or External or Battery Power Supply
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1506; CDB-42L55

DS773F1
LINE OUTPUT CHARACTERISTICS
Test conditions (unless otherwise specified): Connections to the CS42L55 are shown in the
page
Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz; Test load R
page
Notes:
Parameter
Dynamic Range
18 to 24-Bit
16-Bit
Total Harmonic Distortion + Noise
18 to 24-Bit
16-Bit
Full-scale Output Voltage
Other Characteristics
Interchannel Isolation
Interchannel Gain Mismatch
Output Offset Voltage
Gain Drift
Output Impedance
AC-Load Resistance (R
Load Capacitance (C
(+2 dB Analog Gain)
10; Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA, VCP Mode; GND = AGND = 0 V; T
15).
Figure 3. HP Output Test Configuration
11. One-half LSB of triangular PDF dither is added to data.
12. The Analog Gain setting (refer to
13. VCP settings lower than VA reduces the headroom of the headphone amplifier. As a result, the speci-
14. See
GND/AGND
HPOUTx
page
tings at certain VA and VCP supply levels may cause clipping when the audio signal approaches full-
scale, maximum power output.
fied THD+N performance at full-scale output voltage and power may not be achieved.
(Note 11)
HPREF
Figure 3
58) must be configured as indicated to achieve the specified output characteristics. High gain set-
0.1 μF
33 Ω
L
(Note 14)
)
(Note 12)
L
)
(Note 13)
C
and
L
=150 pF
Test Load
Figure 4 on page
R
3 k
L
DAC to LINEOUT
=16
Ω
Measurement
Ω
-
Device
or
unweighted
unweighted
A-weighted
A-weighted
+
(Note 14)
(Note 14)
-20 dB
-60 dB
-20 dB
-60 dB
“Headphone Volume Control” on page 57
0 dB
0 dB
15. Refer to
1.50•VA
Min
93
90
3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
VA = 2.5 V
“Parameter Definitions” on page
1.58•VA
Figure 4. Line Output Test Configuration
±100
Typ
100
-84
-76
-36
-82
-74
-34
0.1
0.5
99
96
96
93
90
-
-
G N D /A G N D
LIN E O U Tx
1.66•VA 1.50•VA 1.58•VA 1.66•VA
LIN E R E F
Max
0.25
150
-78
-30
1.0
-
-
-
-
-
-
-
-
-
-
-
-
L
= 3 kΩ, C
Min
91
88
“Typical Connection Diagram” on
3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
C
VA = 1.8 V
or
L
=150 pF
L
T est Load
= 150 pF (see
“Line Volume Control” on
±100
Typ
100
-86
-74
-34
-84
-72
-32
0.1
0.2
97
94
94
91
90
-
-
71.
R
L
=3 k
M easurem ent
Ω
-
D evice
Max
0.25
150
-80
-28
1.0
-
-
-
-
-
-
-
-
-
-
-
-
CS42L55
A
Figure 3 on
= +25 °C;
+
ppm/°C
Unit
V
mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
pF
Ω
PP
15